Studies on the nematodes of spices. Pathogenic effect of root-knot (Meloidogyne Incognita) and reniform nematodes (Rotylenchulus reniformis) alone and in combination on turmeric (Curclima longa L.).

One hundred infective stages of root-knot and reniform nematodes as initial inoculum level could cause significant reduction in growth characters. Reniform nematode appeared to be more harmful than root-knot by producing significantly higher growth reduction at lower level. Gall formation due to root-knot nematode was adversely affected by their combined inoculation.