HARQUAHALA FEB 29, 2004 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | *********** | **** 213 ** | *********** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - FEB 27 v = Heat Units accumulated from JAN 1 - FEB 20 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 7 days behind normal. HISTORICAL STATISTICS -------------------------------- Last Week : FEB 21 - FEB 27 This Week : FEB 29 - MAR 5 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 68 38 30 28 ---- Normal 71 39 32 37 Recorded 64 42 42 19 0.42 2003 70 39 42 31 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 56.5 FEB 27 ; Min = 48.4 FEB 28 WEATHER UPDATE -------------------------------- A major winter storm will pass through AZ early in the week, bringing cool temperatures and precipitation to most of the state. Skies are expected to clear mid-week, with a gradual warming trend forecast for the latter portion of the week. Expect temperatures to average 3-5 degrees below normal this week. Soil temperatures remain quite cool due to the recent extended period of below normal temperatures. Soil temperatures usually rise into the acceptable range for planting when minimum air temperatures stay in the upper 40s and maximum temperatures exceed 80 degrees. HARQUAHALA MAR 7, 2004 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ************ | **** 244 *** | ************ | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 5 v = Heat Units accumulated from JAN 1 - FEB 27 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 6 days behind normal. HISTORICAL STATISTICS -------------------------------- Last Week : FEB 28 - MAR 5 This Week : MAR 7 - MAR 12 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 71 39 32 37 ---- Normal 76 40 30 55 Recorded 68 43 40 32 0.17 2003 82 43 40 77 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 55.2 MAR 4 ; Min = 48.6 FEB 29 WEATHER UPDATE -------------------------------- High pressure is expected to dominate AZ weather this week. Expect sunny & very warm temperatures through mid-week. A slight cooling trend is forecast for later in the week as another storm passes across the Great Basin. Current forecasts indicate a slight chance of showers later in the week in the southeast. Temperatures should average 5-7 degrees above normal this week. Reminder: Soils typically warm into the acceptable range for germination when high temperature exceed 80F and lows remain in the upper 40s or higher. HARQUAHALA MAR 14, 2004 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ****************** | ******* 350 ****** | ****************** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 12 v = Heat Units accumulated from JAN 1 - MAR 5 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 2 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : MAR 6 - MAR 12 This Week : MAR 14 - MAR 19 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 76 40 30 55 ---- Normal 80 44 32 68 Recorded 88 51 40 105 0.00 2003 72 45 43 41 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 66.9 MAR 13 ; Min = 55.8 MAR 7 WEATHER UPDATE -------------------------------- High pressure will control AZ weather this week. Expect sunny skies with above normal temperatures throughout the week. Temperatures should average 5-7 degrees above normal. Current forecasts indicate a slight chance for a weak low pressure system to impact southeast AZ for the weekend. Long range forecasts are calling for a hot AZ summer, particularly in west- central AZ. Above normal summer temperatures often translate into problems with heat stress. Growers are encouraged to select early, optimum planting dates to minimize potential problems with heat stress. Soils typically warm into the acceptable range for germination when high temperatures exceed 80F and lows remain in the upper 40s or higher. HARQUAHALA MAR 21, 2004 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | *********************** | ********** 458 ******** | *********************** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 19 v = Heat Units accumulated from JAN 1 - MAR 12 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 6 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : MAR 13 - MAR 19 This Week : MAR 21 - MAR 26 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 80 44 32 68 ---- Normal 81 45 30 71 Recorded 92 48 30 108 0.00 2003 81 48 39 79 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 65.8 MAR 21 ; Min = 64.4 MAR 16 WEATHER UPDATE -------------------------------- Another warm week is expected across much of AZ. Expect windy & warm conditions on Monday, followed by warm & dry weather through mid-week. A gradual cooling trend is expected late in the week. Current forecasts suggest the storm track may move back into AZ late this week. It is very common to have a late March/ early April storm system, so growers are encouraged to monitor this situation closely. Temperatures should average 7 degrees above normal this week. Long range forecasts are calling for a hot AZ summer, particularly in west- central AZ. Above normal summer temperatures often generate problems with heat stress. Growers are encouraged to select early, optimum planting dates to minimize potential problems with heat stress. HARQUAHALA MAR 28, 2004 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ***************************** | ************ 576 ************ | ***************************** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 26 v = Heat Units accumulated from JAN 1 - MAR 19 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 13 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : MAR 20 - MAR 26 This Week : MAR 28 - APR 2 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 81 45 30 71 ---- Normal 75 43 32 53 Recorded 89 56 37 118 0.00 2003 77 43 24 61 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 72 MAR 24 ; Min = 65.8 MAR 28 WEATHER UPDATE -------------------------------- High pressure will continue to dominate AZ weather through mid-week. Expect mostly sunny, breezy & very warm conditions through Wednesday. The "annual" late spring winter storm system is projected to move across AZ during the last half of the week. This storm is projected to bring much cooler temperatures & a good chance for precipitation on Thursday evening & Friday. Growers planning to plant this week should monitor this storm very closely ! Conditions are considered acceptable for planting cotton when soil temperatures just after sunrise run 60F or higher (see 8am soil temperatures provided above). Soil temperatures move into this acceptable planting range when minimum air temperatures remain in the upper 40s or higher and highs top 80F. HARQUAHALA APR 4, 2004 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ********************************* | ************** 663 ************** | ********************************* | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - APR 2 v = Heat Units accumulated from JAN 1 - MAR 26 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 14 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : MAR 27 - APR 2 This Week : APR 4 - APR 9 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 75 43 32 53 ---- Normal 78 44 30 63 Recorded 83 52 34 86 1.60 2003 84 43 23 85 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 69.4 APR 1 ; Min = 59.5 APR 3 WEATHER UPDATE -------------------------------- A lingering low pressure system might bring another round of scattered showers and thunderstorms to Arizona early this week. By mid-week, this system will move east and is expected to produce only a slight chance of precipitation mainly near mountains. However, another Pacific storm system is forecast to enter the state, bringing a chance of showers and thunderstorms on Thursday and Friday. Temperatures are expected to remain cool throughout the week; with highs reaching 78 to 84 and lows around 49 to 55. Growers planning to plant this week should monitor these storm systems very closely ! Conditions are considered acceptable for planting cotton when soil temperatures just after sunrise run 60F or higher (see 8am soil temperatures provided above). Soil temperatures move into this acceptable planting range when minimum air temperatures remain in the upper 40s or higher and highs top 80F. HARQUAHALA APR 11, 2004 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ************************************** | ***************** 753 **************** | ************************************** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - APR 9 v = Heat Units accumulated from JAN 1 - APR 2 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 14 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : APR 3 - APR 9 This Week : APR 11 - APR 16 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 78 44 30 63 ---- Normal 83 44 28 77 Recorded 82 53 46 89 0.01 2003 77 46 32 63 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 68 APR 9 ; Min = 57.2 APR 4 WEATHER UPDATE -------------------------------- High pressure will develop over AZ this week, ending two weeks of unsettled weather. Expect sunny skies and much warmer weather through Thursday. The high pressure ridge is expected to weaken later in the week which should result in a slight cooling trend and a chance for another round of unsettled weather. At present, forecasters are uncertain if another storm system will impact AZ next weekend. Growers are encouraged to monitor the development of this potential storm system if planting this week. Conditions are considered acceptable for planting cotton when soil temperatures just after sunrise run 60F or higher (see 8am soil temperatures provided above). Soil temperatures move into this acceptable planting range when minimum air temperatures remain in the upper 40s or higher and highs top 80F. HARQUAHALA APR 18, 2004 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ****************************************** | ******************* 849 ****************** | ****************************************** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - APR 17 v = Heat Units accumulated from JAN 1 - APR 10 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 13 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : APR 11 - APR 17 This Week : APR 18 - APR 24 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 83 44 28 77 ---- Normal 87 49 32 93 Recorded 86 50 30 96 0.00 2003 81 46 32 77 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 67.1 APR 11 ; Min = 64.4 APR 12 WEATHER UPDATE -------------------------------- Sunny & dry with near normal temperatures this week. Expect moderate winds on Monday & again around Thursday as storm systems pass north of AZ. Warmer temperatures are expected for the weekend. Long range forecasts for the upcoming summer continue to show a strong bias for above normal temperatures. Above normal temperatures when combined with normal monsoon humidity can produce severe heat stress conditions. Production practices that lead to: 1) early optimal plantings dates and 2) high fruit retention during the dry months of May & June are the best defense against mid-summer heat stress conditions. HARQUAHALA COTTON DEVELOPMENT ADVISORY APR 25, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | v | | | | | | | | 3/15*********** 553 +11 days | v | | | | | | | | 4/1 ****** 280 +3 days | | | | | | | | | 4/15** 110 -1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to APR 24 v = Heat Units on APR 17; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 933; Last year = 839 HUs since Jan 1 are running about 11 days ahead of normal. HU last week = 83 HISTORICAL STATISTICS -------------------------------- Last Week : APR 18 - APR 24 This Week : APR 25 - MAY 1 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 87 49 32 93 ---- Normal 91 51 31 111 Recorded 83 48 31 83 0.00 2003 86 46 28 94 PINK BOLLWORM EMERGENCE -------------------------------- Spring emergence of PBW should be about 17% complete at this time. ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): .32" .32" .32" .32" .32" WEATHER UPDATE -------------------------------- High pressure is expected to dominate AZ weather this week, bringing mostly sunny skies & very warm temperatures. Some moisture is expected to enter Southeast AZ early in the week & may produce scattered thunderstorms in that region on Monday & Tuesday. Expect the warmest temperatures on Monday & Tuesday with a slight cooling trend mid-week, followed by warmer weather for the weekend. Temperatures should run about 5 degrees above normal this week. Heat unit accumulation now exceeds 800 in most locations (except high elevation areas). Growers still planting in low desert areas are encouraged to switch to medium and/or short season varieties. HARQUAHALA COTTON DEVELOPMENT ADVISORY MAY 2, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | v | | | | | | | | 3/15************* 674 +11 days | v | | | | | | | | 4/1 ******** 401 +4 days |v | | | | | | | | 4/15***** 231 +1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to MAY 1 v = Heat Units on APR 24; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1054; Last year = 933 HUs since Jan 1 are running about 11 days ahead of normal. HU last week = 122 HISTORICAL STATISTICS -------------------------------- Last Week : APR 25 - MAY 1 This Week : MAY 2 - MAY 8 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 91 51 31 111 ---- Normal 92 54 34 118 Recorded 91 55 32 122 0.00 2003 81 48 28 79 PINK BOLLWORM EMERGENCE -------------------------------- Spring emergence of PBW should be about 27% complete at this time. ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): .41" .41" .41" .41" .41" WEATHER UPDATE -------------------------------- High pressure will control AZ weather this week. Expect sunny skies, hot days, & mild nights. Windy conditions may continue on Monday, but winds are expected to lessen as the week progresses. Daytime temperatures are expected to peak near mid-week, with a slight cooling trend forecast for the weekend. Tempera- tures should average 5-7 degrees above normal. Growers still planting in low desert areas are encouraged to switch to medium and/or short season varieties. HARQUAHALA COTTON DEVELOPMENT ADVISORY MAY 9, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | v| | | | | | | | 3/15**************** 807 +10 days | v | | | | | | | | 4/1 *********** 534 +4 days | v | | | | | | | | 4/15******* 364 +2 days | | | | | | | | | 5/1 *** 134 +2 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to MAY 8 v = Heat Units on MAY 1; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1187; Last year = 1012 HUs since Jan 1 are running about 12 days ahead of normal. HU last week = 133 HISTORICAL STATISTICS -------------------------------- Last Week : MAY 2 - MAY 8 This Week : MAY 9 - MAY 15 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 92 54 34 118 ---- Normal 93 56 35 125 Recorded 98 56 36 133 0.00 2003 95 54 26 127 PINK BOLLWORM EMERGENCE -------------------------------- Spring emergence of PBW should be about 41% complete at this time. ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): .46" .37" .37" .37" .37" WEATHER UPDATE -------------------------------- A storm system will pass through the Great Basin this week, bringing a brief halt to the recent hot weather. Expect sunny and very hot conditions on Monday followed by windy and cooler weather mid-week. High pressure will return late in the week and produce much warmer temperatures for the weekend. Growers still planting in low desert areas are encouraged to switch to medium and/or short season varieties. Long range forecasts for the summer continue to show a very positive bias toward above normal temperatures, especially in western AZ. Such a forecast suggests heat stress will be a problem this summer. Management practices that optimize fruit retention during the prime production months of May and June represent the best strategy for minimizing the impact of heat stress. HARQUAHALA COTTON DEVELOPMENT ADVISORY MAY 16, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | v | | | | | | | 3/15******************* 931 +9 days | v | | | | | | | | 4/1 ************* 658 +3 days | v | | | | | | | | 4/15********** 488 +1 day | v | | | | | | | | 5/1 ***** 258 +1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to MAY 15 v = Heat Units on MAY 8; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1311; Last year = 1139 HUs since Jan 1 are running about 11 days ahead of normal. HU last week = 124 HISTORICAL STATISTICS -------------------------------- Last Week : MAY 9 - MAY 15 This Week : MAY 16 - MAY 22 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 93 56 35 125 ---- Normal 95 57 39 135 Recorded 93 55 36 124 0.00 2003 102 63 29 160 PINK BOLLWORM EMERGENCE -------------------------------- Spring emergence of PBW should be about 56% complete at this time. ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): .68" .41" .41" .41" .41" WEATHER UPDATE -------------------------------- A trough of low pressure is expected to move across the Great Basin mid-week. Hot & breezy conditions are expected in advance of this storm Monday through Wednesday. Present forecasts indicate this storm will not bring precipitation to AZ, but will cool temperatures back to normal levels late in the week. Long range forecasts for the summer continue to show a very positive bias toward above normal temperatures, especially in western AZ. Such a forecast suggests heat stress will be a problem this summer. Management practices that optimize fruit retention during the prime production months of May and June represent the best strategy for minimizing the impact of heat stress. HARQUAHALA COTTON DEVELOPMENT ADVISORY MAY 23, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | |v | | | | | | 3/15********************* 1058 +8 days | v| | | | | | | | 4/1 **************** 785 +3 days | v | | | | | | | | 4/15************ 615 0 days | v | | | | | | | | 5/1 ******** 385 0 days | | | | | | | | | 5/15*** 128 0 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to MAY 22 v = Heat Units on MAY 15; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1438; Last year = 1299 HUs since Jan 1 are running about 10 days ahead of normal. HU last week = 126 HISTORICAL STATISTICS -------------------------------- Last Week : MAY 16 - MAY 22 This Week : MAY 23 - MAY 29 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 95 57 39 135 ---- Normal 96 59 41 136 Recorded 92 56 37 126 0.00 2003 106 66 32 173 PINK BOLLWORM EMERGENCE -------------------------------- Spring emergence of PBW should be about 70% complete at this time. ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): .93" .53" .46" .46" .46" WEATHER UPDATE -------------------------------- An unusual late May storm system is expected to impact AZ later this week. Expected sunny, breezy and dry conditions through Wednesday with near normal temperatures. A trough of low pressure is expected to move through the region on Thursday, bringing an increase in moisture and the chance for afternoon thunderstorms. Current forecasts suggest the precipitation may extend into the valley areas, especially in the eastern half of AZ. Management practices that optimize fruit retention during the prime production months of May and June represent the best strategy for minimizing the impact of heat stress. Current long range forecasts show a strong bias for above normal temperatures in July & August. HARQUAHALA COTTON DEVELOPMENT ADVISORY MAY 30, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | v | | | | | | 3/15************************ 1181 +7 days | | v | | | | | | | 4/1 ****************** 908 +2 days | v | | | | | | | | 4/15*************** 738 0 days | v | | | | | | | | 5/1 ********** 508 0 days | v | | | | | | | | 5/15***** 251 -1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to MAY 29 v = Heat Units on MAY 22; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1561; Last year = 1472 HUs since Jan 1 are running about 9 days ahead of normal. HU last week = 122 HISTORICAL STATISTICS -------------------------------- Last Week : MAY 23 - MAY 29 This Week : MAY 30 - JUN 5 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 96 59 41 136 ---- Normal 97 58 38 138 Recorded 90 56 40 122 0.00 2003 106 66 39 173 PINK BOLLWORM EMERGENCE -------------------------------- Spring emergence of PBW should be about 81% complete at this time. ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 1.1" .7" .46" .45" .45" WEATHER UPDATE -------------------------------- High pressure will dominate AZ weather this week and bring the first very hot temperatures to all production areas. Expect clear skies with hot days & mild evenings. Winds should be light and no precipitation is expected. We have entered the hot & dry season which is often the most productive part of the season for cotton. It is important to manage water correctly at this time of year and avoid water stress. Crop water use increases rather quickly at this time of year due to rapid canopy development & increasing evaporative demand. Estimates of cotton water use are provided in the section above. HARQUAHALA COTTON DEVELOPMENT ADVISORY JUN 6, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | v | | | | | 3/15*************************** 1333 +8 days | | v | | | | | | 4/1 ********************* 1060 +3 days | |v | | | | | | | 4/15****************** 890 0 days | v | | | | | | | | 5/1 ************* 660 0 days | v | | | | | | | | 5/15******** 403 0 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 5 v = Heat Units on MAY 29; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1713; Last year = 1645 HUs since Jan 1 are running about 9 days ahead of normal. HU last week = 151 HISTORICAL STATISTICS -------------------------------- Last Week : MAY 30 - JUN 5 This Week : JUN 6 - JUN 12 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 97 58 38 138 ---- Normal 98 60 39 143 Recorded 103 60 40 151 0.00 2003 100 63 33 157 PINK BOLLWORM EMERGENCE -------------------------------- Spring emergence of PBW should be about 90% complete at this time. ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 1.33" .93" .68" .46" .46" WEATHER UPDATE -------------------------------- High pressure will weaken mid-week as a trough of low pressure moves across the Great Basin. Expect sunny, hot and dry conditions through Tuesday, followed by windy and cooler weather for the remainder of the week. Present forecasts indicate this storm system will cool temperatures 7-10 degrees below the recent very hot levels. No precipitation is expected from this storm system. We have entered the hot & dry season which is often the most productive part of the season for cotton. It is important to manage water correctly at this time of year and avoid water stress. Crop water use increases rather quickly at this time of year due to rapid canopy development & increasing evaporative demand. Estimates of cotton water use are provided in the section above. HARQUAHALA COTTON DEVELOPMENT ADVISORY JUN 13, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | v | | | | | 3/15***************************** 1472 +7 days | | | v | | | | | | 4/1 ************************ 1199 +2 days | | v | | | | | | 4/15********************* 1029 0 days | v| | | | | | | | 5/1 **************** 799 0 days | v | | | | | | | | 5/15*********** 542 -1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 12 v = Heat Units on JUN 5; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1852; Last year = 1802 HUs since Jan 1 are running about 8 days ahead of normal. HU last week = 139 HISTORICAL STATISTICS -------------------------------- Last Week : JUN 6 - JUN 12 This Week : JUN 13 - JUN 19 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 98 60 39 143 ---- Normal 103 63 43 162 Recorded 97 58 37 139 0.00 2003 102 63 30 158 PINK BOLLWORM EMERGENCE -------------------------------- Spring emergence of PBW should be about 94% complete at this time. ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 1.65" 1.22" .95" .59" .49" WEATHER UPDATE -------------------------------- High pressure will remain entrenched over AZ this week, bringing hot days, mild nights and little chance for precipitation. Winds are expected to run slightly above normal due to the presence of an upper air low pressure system off the coast of CA. Temperatures for the week should average near long term normals. Forecasters are seeing some indications that the circulation that supports monsoon flow is beginning to develop. Their forecast models suggest no serious chance for moisture for at least 8-9 more days. Crop water use rates are beginning to approach peak levels due to rapid canopy development and high evaporative demand (sunny, hot and dry weather). It is important to manage water correctly at this time of year and avoid water stress. Estimates of cotton water use are provided in the section above. HARQUAHALA COTTON DEVELOPMENT ADVISORY JUN 20, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | v | | | | | 3/15********************************* 1630 +6 days | | | v | | | | | 4/1 *************************** 1357 +2 days | | | v | | | | | | 4/15************************ 1187 0 days | | v | | | | | | | 5/1 ******************* 957 0 days | v | | | | | | | | 5/15************** 700 -1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 19 v = Heat Units on JUN 12; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2010; Last year = 1960 HUs since Jan 1 are running about 8 days ahead of normal. HU last week = 158 HISTORICAL STATISTICS -------------------------------- Last Week : JUN 13 - JUN 19 This Week : JUN 20 - JUN 26 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 103 63 43 162 ---- Normal 102 66 43 168 Recorded 102 62 34 158 0.00 2003 104 61 33 157 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 1.98" 1.53" 1.25" .87" .51" WEATHER UPDATE -------------------------------- Another sunny and dry week is expected across much of southern and central AZ. High pressure will remain in control of AZ weather, so expect hot days, mild nights and plenty of sunshine. The only exception may develop in southeast AZ where some moisture from Mexico may seep into the region during the first half of the week. This moisture may generate a few scattered thunderstorms. High pressure is expected to build back over the entire state for the week- end, so the current stretch of good 'fruiting weather' is expected to continue for at least another week. The latest long range forecast for the summer continues to indicate a very strong bias for above normal temperatures. As usual, these forecasts provide no guidance on the monsoon season which typically begins the first week of July. HARQUAHALA COTTON DEVELOPMENT ADVISORY JUN 27, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | v | | | | 3/15************************************ 1796 +6 days | | | | v | | | | | 4/1 ****************************** 1523 +2 days | | | v | | | | | 4/15*************************** 1353 0 days | | |v | | | | | | 5/1 ********************** 1123 0 days | v | | | | | | | 5/15***************** 866 -1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 26 v = Heat Units on JUN 19; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2176; Last year = 2117 HUs since Jan 1 are running about 7 days ahead of normal. HU last week = 166 HISTORICAL STATISTICS -------------------------------- Last Week : JUN 20 - JUN 26 This Week : JUN 27 - JUL 3 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 102 66 43 168 ---- Normal 106 68 46 179 Recorded 104 64 37 166 0.00 2003 109 70 36 185 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 2.18" 1.74" 1.47" 1.1" .69" WEATHER UPDATE -------------------------------- High pressure will continue to dominate AZ weather for at least another week. Expect sunny, hot and dry conditions in most cotton production areas. The main exception to this forecast will be southeast AZ where a weak flow of moisture will continue to generate some widely scattered afternoon and evening thunderstorms, especially during the first half of the week. Hot and dry weather is expected to redevelop over southeast AZ during the latter half of the week. The latest long range forecast for the summer continues to indicate a very strong bias for above normal temperatures. As usual, these forecasts provide no guidance on the monsoon season which typically begins the first week of July. HARQUAHALA COTTON DEVELOPMENT ADVISORY JUL 4, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | v | | | | 3/15*************************************** 1949 +5 days | | | | v| | | | | 4/1 ********************************** 1676 +1 day | | | | v | | | | | 4/15****************************** 1506 -1 day | | | v | | | | | | 5/1 ************************** 1276 -1 day | | v| | | | | | | 5/15******************** 1019 -2 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUL 3 v = Heat Units on JUN 26; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2329; Last year = 2302 HUs since Jan 1 are running about 6 days ahead of normal. HU last week = 153 HISTORICAL STATISTICS -------------------------------- Last Week : JUN 27 - JUL 3 This Week : JUL 4 - JUL 10 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 106 68 46 179 ---- Normal 103 73 57 191 Recorded 101 61 28 153 0.00 2003 111 72 41 190 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 2.63" 2.16" 1.86" 1.46" 1.02" WEATHER UPDATE -------------------------------- High pressure will keep AZ mostly clear, hot and dry for much of the week. Forecasters do expect moisture to move into AZ during the last half of the week, but the bulk of this moisture is expected to move into southeast AZ where it will generate some widely scattered afternoon thunderstorms. Expect daytime temperatures to run a few degrees above normal. Night temperatures will warm to near normal levels as increasing moisture levels work to reduce radiative cooling at night. Humidity plays a critical role in crop performance during the monsoon season. Increases in humidity during the monsoon cause crop temperatures to rise which can lead to heat stress conditions and reduced fruit retention. AZMET provides daily updates on cotton heat stress at: www.ag.arizona.edu/azmet/data/00stress1.txt HARQUAHALA COTTON DEVELOPMENT ADVISORY JUL 11, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | v | | | | 3/15****************************************** 2122 +4 days | | | | | v | | | | 4/1 ************************************* 1849 0 days | | | | v| | | | | 4/15********************************** 1679 -2 days | | | | v | | | | | 5/1 ***************************** 1449 -2 days | | | v | | | | | | 5/15************************ 1192 -2 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUL 10 v = Heat Units on JUL 3; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2502; Last year = 2492 HUs since Jan 1 are running about 5 days ahead of normal. HU last week = 172 HISTORICAL STATISTICS -------------------------------- Last Week : JUL 4 - JUL 10 This Week : JUL 11 - JUL 17 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 103 73 57 191 ---- Normal 106 73 52 190 Recorded 105 67 37 172 0.00 2003 111 82 52 212 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 2.62" 2.3" 2.02" 1.65" 1.23" WEATHER UPDATE -------------------------------- Humidity moved into much of AZ late last week, marking the start of the monsoon season. High pressure, which aids in the transport of tropical moisture, has set up near the Four Corners region, so this should be a "good" week for the monsoon. Forecasters are calling for a hot week with sufficient moisture to generate scattered thunderstorms on most days. An easterly tropical wave may enhance storm activity during the first half of the week as this system moves from east to west across northern Mexico. Cotton heat stress developed in many regions over the weekend -- the result of increasing humidity & high air temperatures. Growers should expect more heat stress this week, given the current forecast. Heat stress is categorized as either Level 1 or Level 2 stress. Level 1 stress generates light to moderate fruit loss while Level 2 stress generates heavy fruit loss. With both stress levels, fruit retention improves when the stress is eliminated; however, Level 2 stress commonly produces a secondary loss of fruit ~15 days after the stress event because Level 2 stress damages young squares. Fruit lost as a result of heat stress consists of young bolls -- 1 to 5 days post bloom. AZMET provides daily updates on cotton heat stress at: www.ag.arizona.edu/azmet/data/00stress1.txt HARQUAHALA COTTON DEVELOPMENT ADVISORY JUL 18, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | |v | | | 3/15********************************************** 2320 +4 days | | | | | v | | | | 4/1 ***************************************** 2047 0 days | | | | | v | | | | 4/15************************************** 1877 -1 day | | | | v | | | | | 5/1 ********************************* 1647 -1 day | | | v | | | | | 5/15**************************** 1390 -2 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUL 17 v = Heat Units on JUL 10; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2700; Last year = 2704 HUs since Jan 1 are running about 5 days ahead of normal. HU last week = 198 HISTORICAL STATISTICS -------------------------------- Last Week : JUL 11 - JUL 17 This Week : JUL 18 - JUL 24 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 106 73 52 190 ---- Normal 105 74 56 193 Recorded 106 76 61 198 0.18 2003 108 81 56 207 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 2.37" 2.36" 2.11" 1.77" 1.39" WEATHER UPDATE -------------------------------- The circulation pattern supporting the monsoon is expected to degrade during the first half of the week. Expect higher temperatures, some reduction in humidity, & a reduced chance for precipitation during this period. Precipitation should be confined to southeastern production areas during the first half of the week. Western production areas may see a marked decline in humidity which may lessen heat stress. A more functional monsoon circulation pattern is expected to re- develop later this week, which should reduce temperatures & improve the chances for precipitation. Cotton heat stress developed in many regions over the weekend -- the result of increasing humidity & high air temperatures. Growers should expect more heat stress this week, given the current forecast. Heat stress is categorized as either Level 1 or Level 2 stress. Level 1 stress generates light to moderate fruit loss while Level 2 stress generates heavy fruit loss. With both stress levels, fruit retention improves when the stress is eliminated; however, Level 2 stress commonly produces a secondary loss of fruit ~15 days after the stress event because Level 2 stress damages young squares. Fruit lost as a result of heat stress consists of young bolls -- 1 to 5 days post bloom. AZMET provides daily updates on cotton heat stress at: www.ag.arizona.edu/azmet/data/00stress1.txt HARQUAHALA COTTON DEVELOPMENT ADVISORY AUG 1, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | | v | | | 3/15****************************************************** 2720 +5 days | | | | | | v | | | 4/1 ************************************************* 2447 +1 day | | | | | |v | | | 4/15********************************************** 2277 -1 day | | | | | v | | | | 5/1 ***************************************** 2047 -1 day | | | | |v | | | | 5/15************************************ 1790 -1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUL 31 v = Heat Units on JUL 24; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 3100; Last year = 3102 HUs since Jan 1 are running about 6 days ahead of normal. HU last week = 195 HISTORICAL STATISTICS -------------------------------- Last Week : JUL 25 - JUL 31 This Week : AUG 1 - AUG 7 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 105 75 58 195 ---- Normal 105 76 58 197 Recorded 107 74 51 195 0.00 2003 108 75 61 199 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 2.66" 2.66" 2.66" 2.65" 2.22" WEATHER UPDATE -------------------------------- The high pressure system that directs monsoon flow has shifted into Texas which should create a split weather situation for Arizona this week. Central and east- ern production areas will remain under monsoon conditions and can expect warm and humid conditions with afternoon thunderstorms. Current forecasts suggest western production areas will escape the monsoon humidity through at least the first half of the week and thus should be hot and dry. High pressure is expected to move back over New Mexico and the Four Corners later this week and reestablish a more normal monsoon pattern statewide. The return of drier weather greatly lessened heat stress levels last week. AZMET provides daily updates on cotton heat stress at: www.ag.arizona.edu/azmet/data/00stress1.txt HARQUAHALA COTTON DEVELOPMENT ADVISORY AUG 8, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | | |v | | 3/15********************************************************** 2924 +5 days | | | | | | v | | | 4/1 ***************************************************** 2651 +1 day | | | | | | v | | | 4/15************************************************** 2481 -1 day | | | | | v | | | 5/1 ********************************************* 2251 -1 day | | | | | v | | | | 5/15**************************************** 1994 -1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to AUG 7 v = Heat Units on JUL 31; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 3304; Last year = 3301 HUs since Jan 1 are running about 6 days ahead of normal. HU last week = 204 HISTORICAL STATISTICS -------------------------------- Last Week : AUG 1 - AUG 7 This Week : AUG 8 - AUG 14 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 105 76 58 197 ---- Normal 103 75 59 194 Recorded 105 78 52 204 0.00 2003 106 77 58 198 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 2.45" 2.45" 2.45" 2.45" 2.36" WEATHER UPDATE -------------------------------- High pressure will move over AZ this week, reducing monsoon activity and producing hot and less humid weather for the first half of the week. Very hot temperatures (above 110F) are possible in many production areas and humidity should be sufficient to generate heat stress conditions. The high will shift eastward later in the week and allow monsoon activity to return in force. Expect cooler and more humid weather from Thursday on with improved chances for precipitation. Daily updates on cotton heat stress are available at: www.ag.arizona.edu/azmet/data/00stress1.txt HARQUAHALA COTTON DEVELOPMENT ADVISORY AUG 15, 2004 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | | | v | | 3/15************************************************************** 3123 +5 days | | | | | | v | | 4/1 ********************************************************* 2850 +1 day | | | | | | v | | | 4/15****************************************************** 2680 -1 day | | | | | | v | | | 5/1 ************************************************* 2450 -1 day | | | | | v| | | | 5/15******************************************** 2193 -1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to AUG 14 v = Heat Units on AUG 7; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 3503; Last year = 3499 HUs since Jan 1 are running about 6 days ahead of normal. HU last week = 199 HISTORICAL STATISTICS -------------------------------- Last Week : AUG 8 - AUG 14 This Week : AUG 15 - AUG 21 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 103 75 59 194 ---- Normal 105 76 60 197 Recorded 106 77 57 199 0.00 2003 102 77 68 198 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 5/15 Water Use (last week): 2.31" 2.41" 2.41" 2.41" 2.41" WEATHER UPDATE -------------------------------- Active monsoon weather is expected on Monday & Tuesday as an upper air disturbance aids in thunderstorm development. The high pressure system that drives monsoon circuluation is forecast to shift to a less favorable location beginning Wednesday, which should lessen thunderstorm activity & result in a gradual warming across AZ. Still, there should be adequate moisture to support isolated thunderstorms throughout the week. Temperatures should average near normal this week. Cotton heat stress reports are available at: www.ag.arizona.edu/azmet/data/00stress1.txt