Suppression of nematode populations with animal by-products

The incorporation of blood, fish and meat wastes into the soil was effective in reducing the populations of plant-parasitic nematodes and improved pigeon pea (Cajunus cajan L.) plant growth. Lower dosages (1 and 5% (w/w)) gave the best responses and the highest dose (10% (w/w)) showed phytotoxic effects. There was a correlation between reduced nematode populations and increased plant growth. Blood waste amendment to soil was the most effective nematode suppressant, followed by meant and fish wastes.