Nematicides and Nonconventional Soil Amendments in the Management of Root-Knot Nematode on Cotton

E. C. Jorgenson

Abstract


Granular and liquid commercial humates, with micronutrients, and a microbial fermentation product were compared in several combinations with nematicides for their effects on cotton lint yield and root-knot nematode suppression. Fumigant nematicides effectively reduced cotton root galling caused by root-knot nematodes, and cotton lint yields increased. Organophosphates and carbamates were not effective. Occasionally, cotton lint yields were increased or maintained with combination treatments o f humates, micronutrients, and a microbial fermentation product, but galling o f cotton roots by root-knot nematodes was usually not reduced by these treatments. Key words: Meloidogyne incognita, humates, micronutrients, microbial fermentation product, Gossypium hirsutum, nematicides.

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