Comparative efficacies of soil amendments and a synthetic nematicide on growth, yield and food components of a root-knot nematodes-infected soyabean (Glycine max L. Merill)

Abstract

A study carried out to compare the effects of organic soil amendments (Cocoa pods, Poultry dropping
and Neem leaf) and a synthetic nematicide (Vertimec) on growth, yield and food components of a root-knot nematodessusceptible
variety of soyabean (TGX 923-2E).
The organic soil amendments and Vertimec were significantly effective in decreasing nematode multiplication rate
and root-knot development with a resuktant increase in plant growth and yield as compared with the control. It was
observed that the soyabean plants treated with poultry droppings had the highest growth (number of leaves/plant) and
yield (number of pods/plant) parameters. The food components of soyabean were however not significantly affected by
the treatments.
Key Words: Soil amendments; Nematicides; Root-knot nematodes; Soyabean (Glycine max).