AM fungi

The study was performed to observe the effects of Arbuscular Mycorrhizal fungi.Glomus hoi and metals on growth parameters of wheat (Triticumaestivum L.) variety Raj4238underpot trials.There were two sets of experimentto study effect of Iron and Chromium effect respectively in mycorrhizal and non-mycorrhizalwheat plants. The dosages of metal were framed on the basis of recommended levels for plants. The application of Glomus hoi showed significant reduction in metal stress and better growth, biomass, improved physiological state and higher yields were recorded in mycorrhizal plants as compared to non-mycorrhizal plants. In general, AM fungi protected the wheat plants against metal toxicity and also improved the nutrients contents of plants. Thus the studyadvocates the use of AMFto mycoremediate metal toxicity and to have better crop yield.

An experiment was conducted to study the effect of inoculum sequence of different AM fungi on the disease severity of Root-knot nematode Meloidogyne incognita (Kofoid and White) on Vigna radiata (L). In this study two different AM Fungi Glomus mosseae and Glomus fasciculatum were inoculated before and after the nematode infection. It is evident from the results obtained from present investigations that prior application of both types of AM fungi helped in decreasing the nematode multiplication as compared to prior nematode inoculation. AM fungi establishes itself vastly before nematode attacks and creates an unfavourable environment for Meloidogyne incognita development.

An Experiment was carried out for the management of root - knot nematode, Meloidogyne incognita (Kofoid and White) on mungbean (Vigna radiate L. ) with the help of AM fungi. Significant reduction in nematode population and development of mung plant was observed when mung plants were treated with different AM fungi. Four AM fungi were used in the treatment viz. Glomus mosseae, Glomus fasciculatum, Gigaspora gigantea and Gigaspora margarita. These fungi were used in 10gm dose. Remarkable reduction in gall formation and disease severity, increased root, shoot weight were observed in AM treated mung plants. The present investigation indicates that the AM fungi specially Glomus fasciculatum has a great potential against M. incognita.

An experiment was carried out for the management of root-knot nematode, Meloidogyne incognita on mungbean (Vigna Radiata L.) with the help of integrated management of AM fungi and dried leaf powder. Glomus fasciculatum and dried leaf powders of Azadirachta indica Juss. and Bougainvillea spectabilis Willd. were tested for their namaticidal activity. Results of pot experiments of integrated nematode management (INM) by leaf powders and AM fungi significantly enhanced the plant growth and reduced nematode population. Biomass was increased and disease intensity was reduced by both the combinations but more effectively by Azadirachta leaf powder and AM fungi.