Avicta and Clariva Affect the Biology of the Soybean Cyst Nematode, Heterodera glycines

Abstract

Nematicidal seed treatments are a relatively new strategy for managing environment experiments. Avicta inhibited juvenile movement and peneplant-parasitic nematodes in row crops. Two such seed treatments, tration at the seed depth and 3 cm below the seed. Clariva inhibited juvenile Avicta (abamectin) and Clariva (Pasteuria nishizawae), are marketed movement and penetration 3 and 5 cm below the seed and nematode develby Syngenta for use against Heterodera glycines in soybean production opment within the roots of young plants. Both seed treatments affected in the upper Midwest. The specific effects of these seed treatments on the nematodes in 10- and 20-day-old plants, but effects were not detected on biology of the nematode have not been previously reported. The effects nematodes developing in older plants (30 and 60 days) with larger root sysof Avicta and Clariva on H. glycines hatching, movement, attraction, tems. These results provide details of the specific mechanisms of early-penetration, development, and reproduction were determined in controlled-season protection provided by Avicta and Clariva seed treatments.