ABSTRACT
The chemicals used in the management of plant-parasitic nematodes (PPNs) may cause environmental pollution, hazards to humans and toxic residues in agricultural produce. This has led to increased attention and exploration of possibilities of evolving other eco-friendly control methods. These botanicals, including plant by-products, can be used as an alternative to chemical pesticides. The use of oilseed cakes is found to be effective against nematodes. The oilseed contains volatile fatty acids such as formic, acetic, propionic, phenols, tannins and nitrogenous compounds and butyric acids, ammonia and hydrogen sulphide that are released in the soil during microbial decomposition of organic amendments are directly toxic to nematodes. Soil organic amendments have been explored to suppress nematodes. Adding sunflower and mahagoni oilseed cake as organic amendments also improves the soil conditions, triggering rapid root growth by releasing chemical compounds.
