Performance Comparison of Carbofuran and Bio-Nematicidal Potentials of the Extracts from Rattle Weed and Nitta Plants on Root Knot Nematode Pest of Pepper

摘要

Two years field trial were carried out to compare the effectiveness of carbofuran and plant extracts from the roots and leaves of rattle weed and nitta plant in root knot nematode control on pepper. Carbofuran was applied at 1.5 and 2.5 kg a.i ha 1, while plant extracts were applied at 25, 50, 75 and 100% concentrations. An experimental plot where neither carbofuran nor plant extract was applied served as the control treatment. Distilled water and methanol served as media of extraction from rattle weed and nitta plant. Both carbofuran and plant extracts significantly, reduced the soil population of root-knot nematode and galling on the root of pepper and also improved growth and yield of pepper. Pepper plants treated with carbofuran and 100% concentration of the plant extracts gave the best control of the root-knot nematode.