Role of Glomus mosseae and neemex in the management of Meloidogyne incognita on tomato

Abstract

Root-knot nematodes are one of the major limiting factors for vegetables including tomato. Chemical control of nematodes is harmful to health and causes environmental pollution by contaminating underground water. Use of biocontrol agents can be the potential alternative to chemicals. Therefore, in the present study, effectiveness of mycorhizal fungus (MF) Glomus mosseae and neemex alone and in combination was evaluated against Meloidogyne incognita under greenhouse conditions. The combined application of MF and neemex caused significant reductions in number of galls, egg masses and females followed by application of MF and neemex alone as compared to control. Number of juveniles (J2)/root system and J2/100 cm³ soil were estimated to be lower in the combined treatment of MF and neemex, followed by MF and neemex alone as compared to check. Root weight was significantly higher in M. incognita inoculated plants followed by MF and neemex combined treatment and MF alone in the presence of M. incognita as compared to other treatments. Significantly higher root length was recorded in plants treated with MF as compared to control. Shoot weight and shoot length was significantly higher in mycorrhizal treated plants as compared to other treatments. It is therefore, concluded from the present study that mycorrhizal fungus Glomus mosseae and neemex alone and in combination has the potential to reduce root-knot infestation and enhance growth of tomato.