This report is sponsored by a grant from the Cotton Foundation
This information was provided by state coordinators and was collected from surveys of county agents, extension specialists, private consultants and research entomologists. All data are averaged over a total reporting unit. For example, if a unit report represents 100 acres and an 8% loss on 25 of these acres, then in the table summary this shows up as a 2% loss. ((.08 x25)/100). This type of averaging is used for all data reported including yields and costs of control. Because of averaging and rounding some individual state summary numbers listed as '0' are slightly larger. Costs are averaged to the nearest cent, bales and acres to the nearest whole number, other numbers are rounded to the nearest .001. Bales are calculated at 480 pounds, and a cost of $0.65 per pound of lint is used in figuring costs.
In an attempt at capturing as many of the costs of insect management as possible, the Cotton Insect Losses estimates have changed in the last few years. They were begun as a simple attempt to arrive at the 'average cost of spraying insecticide' for control of cotton arthropod pests. We still attempt to arrive at the most accurate estimate possible for spray activities, but have also added some of the other costs which are incurred in cotton insect pest management. These 'additional' costs increase the bottom line of expenditures for arthropod pest management - but also more accurately reflect true expenditures. We include 'at planting insecticide costs, (an estimate of the cost of systemic insecticides applied at planting for control of thrips and other pests of seedling cotton) 'Bt cotton costs', (an estimate of the technology fee and the seed surcharge) 'eradication costs'(which include the maintenance fee in those states which have eradicated the weevil and other eradication projects) and 'scouting costs' to the traditional 'foliar insecticide costs'. Bales lost are also given a dollar value using 480 pound bales at $0.65 per pound. Remember these are estimates and may not totally reflect an individual farm or area, but they do reflect trends and serve as a general comparison.
Cotton losses to arthropod pests reduced overall yields by 2.58%. These losses reflect another low estimate, reflecting a trend which began in 2000. Thrips took top ranking at 0.713% loss. . No pest exceeded 1% loss. Lygus were ranked second at 0.614%. The bollworm/budworm complex (0.486%) were third. Stink bugs were 4th at 0.371%; and fall armyworms were 5th at 0.113%. Total cost and loss for insects in 2009 were $ 502 million. Direct management costs for arthropods were $43.33 per acre.
This work is sponsored by the Cotton Foundation and is accomplished only through the diligent effort of the aforementioned coordinators, Dr. Frank Carter, Dr. John Adamczyk and Dr. Gus Lorenz