Effect of bio-fertilizers on root-knot nematode Meloidogyne incognita Kofoid et White, 1919/Chitwood, 1949 in tomato Ng« ThÞ Xuyªn1
The root-knot nematode Meloidogyne incognita is a widely distributed disease of the tomatoes around Hanoi. The effect of bio-fertilizer (HC5.3) and bio-agents (WEHG, BAEM, Agrispon and Sincosin) on nematode population changes in different tomato varieties was studied. When compared with non-organic treatment, the number of second-stage juveniles recovered from soil 45 and 60 days after transplanting of tomato (cv. MV-1) was reduced by HC5.3, WEHG, BAEM, Agrispon and, particularly Sincosin. Root galling and egg masses on roots were also reduced. The combined use of bio-fertilizer with bio-agents was suggested to minimize the root-knot nematode infection. Keywords: Root-knot nematode Meloidogyne incognita, tomato, organic fertilizer (HC5.3), WEHG BAEM, Agrispon, Sincosin.