Use of Avermectins for the Control of Meloidogyne incognita on tomatoes
Abstract
The efficacy of avermectins B[sub1] and B[sub2] for control of Meloidogyne incognita on tomato was studied in pots and field plots for two seasons. Avermectins were applied as granules and liquid in furrows or by low pressure drip irrigation systems, at rates ranging from 0.093 to 0.34 kg a.i./ha, as single or multiple applications. Levels of control comparable to those obtained by oxamyl and aldicarb at 3.36 kg a.i./ha were achieved by the avermectin with only 1/10 the volume of chemicals applied to the environment. Avermectin protection of the roots remained constant throughout the first 5 weeks giving slightly longer protection than oxamyl or aldicarb. Key words: Lycopersicon esculentum, root-knot nematodes, furrow irrigation, low pressure drip irrigation, PVC injector.Downloads
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