This work proposes a chemical control to soybean aphid by fuzzy linear programming. The soybean aphid, Aphis glycines (Hemiptera: Aphididae), is an invasive herbivore to North America. In this paper we have propose a chemical control in the plantation when the prey population exceeds the economic damage threshold. On the other hand, the soybean aphid has become the most devastating insect pest of soybean in the United States. Brazil is the second largest exporter of soybean at present, after the USA and before Argentina. According to the Bureau of Agriculture of the USA, it has been estimated that Brazil will be the largest soybean exporter in 2023.
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