pnut pnut Peanut Science 0095-3679 0095-3679 American Peanut Research and Education Society 10.3146/i0095-3679-14-2-2 Articles The Effect of Loose-Shelled Kernels and Foreign Material on Pirimiphos-Methyl Residues in Stored Farmers Stock Peanuts1 F. H. Arthur , L. M. Redlinger , and R. A. Simonaitis

1Stored-Product Insects Research and Development Laboratory, Agricultural Research Service, U. S. Department of Agriculture, Savannah, Georgia 31403.

 7 1987 14 2 59 61 12 9 1987 American Peanut Research and Education Society 1987 American Peanut Research and Education Society Abstract

Farmers stock peanuts containing either 0% loose-shelled kernels (LSK) and 0% foreign material (FM), 5% LSK-10% FM, or 10% LSK-20% FM were sprayed with 20 PPM pirimiphos-methyl. Peanut samples were analyzed for insecticide residues during a 1-year storage period. Significantly lower residues were found on in-shell peanuts with 0% LSK-FM than on either of the 2 LSK-FM combinations. Insecticide residues accumulated in the FM and to a lesser extent in the LSK. Negligible residues were found on sound mature kernels from solid pods.

 Key Words Peanuts; , pirimiphos-methyl; , residues; , foreign material; , FM; , loose-shelled kernels; , LSK; , cleaning