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What is interesting to note is the dramatic decline from 1976 to 1982 when insecticides applied per/hectare were reduced from 13*5 to 3*7 pounds. A similar observation may be made for grain sorghum. 90 pounds by 1982. One may argue that this reduction in insecticide use results from the change in classes of insecticides used with a shift from chlorinated hydrocarbons to organophosphates. This is only partially true. The primary factors involved in the reduction of insecticide use on these commodities (cotton, grain sorghum, and peanuts) is due to integrated pest management programs either implemented through the Cooperative Extension Service, private consulting entomologists, or by individual farmers.
Check, J. Luchuk and C. ). the American chestnut symposium. 1978. Proceedings of West Virginia Unlv. Books, Morgantown. 122 PP. , and N. Prasad. 1977. Infectivity of BaciIlus penetrans In plant parasitic nematodes. J. Nematol. 2:7-8. P. 1959. Occurrence and transfer of a biological factor In soil that suppresses potato scab. Phytopathology 49:648-652. B. 1973. Mlcroblal Ion transport compounds (siderophores), pp. 167202. L. ), Inorganic biochemistry. Elsevler, Amsterdam. B. ). 1974. Mlcroblal Iron metabolism.
One only has to glance briefly at the literature to find out that IPM has significantly increased net profits to farmers. S. Agriculture 45 implementation of cotton IPM programs in Texas· By using several techniques, including budget analysis, linear programming and statistical analysis, they clearly show the profitability of programs such as the Texas High Plains boll weevil (Anthonomus grandis) control program. This program showed an annual, regional impact (increase in economic activity) of $63 million and a state economic impact of $82 million, while farmers benefited by a $27 million increase in net profits.