Other Contributions: Potato Seed-Piece Treatment with the Systemic Nematicide Phenamiphos for Control of Plant Parasitic Nematodes

Abstract

Potato seed-pieces were immersed in emulsions containing the systemic nematicide phenamiphos at concentrations of 0, 1.8, 3.6, 8.9, 17.9, or 35.9 g/L. When treated seed-pieces were planted in soil infested with a variety of plantparasitic nematodes, there was a reduction in number of pathogens in the soil and in roots of plants produced as compared to controls. Concentrations of nematicide higher than 1.8 g/L were toxic to plants. No plants were produced from seed - pieces immersed in the 2 most concentrated emulsions. The degree of control obtained with the 1.8 g/L emulsion ranged from 67 - 100% depending on the nematode species.