Comparative study of Nematode Population in the Rhizosphere of Bt-Transgenic Cabbage and Non transgenic Cabbage (Brassica oleracea var. Capitata)

Rhizospheric soil samples from transgenic and non-transgenic cabbage were analyzed to study whether there was any difference in the number of Rotylenchulus, Tylenchulus and Saprophyte nematodes due to variety. The soil samples collected from cabbage rhizosphere of both the varieties, were subjected to univariate analysis of variance. Rotylenchulus and Saprophyte population was compared treatment wise, i.e., nematode population in transgenic soil sample treated with 0, 40 and 80 kg P₂O₅, in 25 days after transplanting, it was found that the variation in nematode population in two rhizospheric soil was statistically insignificant. When nematode population in these two types of rhizopsheric soil was statistically analyzed 50 days after transplanting, it was found that variation of nematode population in the rhizospheric soil was statistically insignificant.