Integration of soil solarization with vesicular-arbuscular mycorrhiza and Azotobacter chrococcum for the management of sapling wilt in mango (Mangifera indica).
Harender Raj, Sharma S. D.
Author Affiliation: Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh 173 230, India.
Indian Journal of Agricultural Sciences 78 : 1086-1091
Abstract : Field studies were conducted in Nauni and Bhota, (Himachal Pradesh, India), from 2002 to 2004, to find out the effect of root inoculation of saplings of mango with native isolates of vesicular arbuscular mycorrhiza (VAM) and Azotobacter chrococcum [Azotobacter chroococcum] in solarized and sterilized soil on the incidence of sapling wilt caused by Fusarium solani and growth of the saplings. Mango saplings were inoculated with 14 different combinations of 4 native isolates of VAM, i.e. AMUHF1 (Glomus fesiculatum [Glomus fasciculatum]), AMUHF2 (Glomus macrocarpum), AMUHF3 (Glomus mosseae) and AMUHF4 (Gigaspora sp.) and 2 native isolates of A. chrococcum (AZUHF1 and AZUHF2) and grown in soil solarized with transparent polyethylene mulch (25 µm thick) for 40 days in summer months and also in soil sterilized with 5% formalin. Inoculation of saplings with AMUHF4 isolate of VAM and AZUHF1 isolate of A. chrococcum and then their planting in solarized soil was found most effective with no incidence of sapling wilt compared to 32.33% in the control accompanied with 107.2-123.1% increase in shoot length and 79.7-85.2% increase in root length.