Effects of Selected Carbamate and Organophosphate Nematicides on Hatching and Emergence of Heterodera schachtii

Arnold E. Steele

Abstract


Ethoprop, oxamyl, PP 156, fenamiphos, carbofuran , AC 64,475, Bunema MÖ, CG 12223, aldicarb, aldicarbsulfoxide, and aldicarbsulfone were tested for their effects on hatching and emergence of larvae from cysts of Heterodera schachtii. The oxime carbamates and carbofuran inhibited hatching , but this response was reversed by removing the chemical treatment . Inhibition of hatching by Bunema M and all organophosphates tested was irreversible . Key Words: chemical control, cyst nematodes, reversible toxicity, screening tests.

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