Preliminary Observation on the Effect of Some Systemic Nematicides and Neem Oil Cake in a Cardamom Field Infested with Root-Knot Nematodes
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2007-02
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A control experiment against root-knot nematodes was laid down in a cardamom field, replicated four times with nine treatments in randomised block design. Three systemic nematicides and neem oil cake were applied twice in a year. Aldicarb, Carbofuran, Phorate applied at the rate of 5 g and 10 g ai/plant, while neem oil cake at the rate of 500 g and 1000 g/plant. Maximum capsule yield was obtained from the plants applied with neem oil cake at the rate of 1000 g/plant followed by 500 g per plant. Statistically significant reduction in nematode population was observed in all treatments. In untreated plants heavy premature capsule drop was observed over treated plants and was statistically significant. The study has determined that Meloidogyne incognita reduced the yield of cardamom by 32 to 47 per cent over treated plants. By controlling the root-knot population the average yield of cardamom capsules can be enhanced by 70 per cent in the very first year.
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In: Proceddings, PLACROSYM VI, RRII, Kottayam, 16-20 Dec. 1984. Edited by M.R. Sethuraj and others 215-223