MARANA COTTON DEVELOPMENT ADVISORY AUG 26, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | | | | | 3/15*-400 -41 days | | | | | | | | | 4/1 *-590 -38 days | | | | | | | | | 4/15-761 -39 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 AUG 25 v = Heat Units on AUG 18; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 0; Last year = 3952; Normal = 3747 HUs since Jan 1 are running about 237 days behind normal. HU last week = 9 HISTORICAL STATISTICS -------------------------------- Last Week : AUG 19 - AUG 25 This Week : AUG 26 - SEP 1 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 98 71 60 181 ---- Normal 98 71 60 181 Recorded 58 31 58 9 0.00 2011 104 79 56 204 ESTIMATED WATER USE -------------------------------- Planting date : 3/15 4/1 4/15 5/1 Water Use (last week): .11" .11" .11" .11" HEAT STRESS LEVELS -------------------------------- Date 5/1 5/2 5/3 5/4 5/5 5/6 5/7 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --High pressure over southwest Colorado will bring easterly flow to AZ this week. Expect hot temperatures, moderate humidity & a chance for afternoon & evening thunderstorms both early & late in the week. Drier air will enter AZ mid-week & lower the chances for precipitation except near Yuma where a weak distubance may trigger thunderstorms. A second disturbance is forecast to impact AZ late in the week & may produce more widespread precipitation in central & eastern AZ. This is the final cotton advisory for the 2012 season. Have a safe & profitable harvest season!!