Effect of Foliar Applications of Carbofuran and a Related Compound on Plant-parasitic Nematodes under Microplot and Field Conditions.

Studies were conducted to investigate the basipetal translocation of nematicidal activity from foliar treatments of carbofuran and its analog, 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ([dibutylamino]thio)methyl carbamate, on corn in microplot studies and on tobacco and potato in field trials. Two and three foliar applications of either product at 2,400 mug/ml (9-20 Kg ai/Ha) significantly reduced populations of Pratylenchus penetrans in roots and populations of Tylenchorhynchus claytoni, Xiphinema americanum, and Hoplolaimus sp. in soil. In most cases there was no difference in control between two or three chemical applications. Foliar treatments with carbofuran were equivalent to, or better than, soil treatment, although rates of applications were different.