Record ID No. |
886 |
Author(s) |
Jha,A.K., Netra Pal., Saxena,A.K., Dhyan-Singh., Jha,G.K , 2006 |
Affiliation |
Division of Vegetable Science, Indian Agricultural Research Institute, New Delhi 110 012, India. |
Title |
Coinoculation effect of VAM and PGPR on growth and yield of onion |
Source. Vol.(no):Page |
Indian-Journal-of-Horticulture. 63(1), 44-47p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biological Interaction |
Sub-subjects |
Mycorrhiza helper bacteria |
Host |
Allium cepa |
Organism |
Rhizobacteria, Azospirillum brasilense, Azotobacter chroococcum, fluorescent pseudomonas |
Country |
India, Asia |
Abstracts |
Six plant growth promoting rhizobacteria (PGPR), i.e. fluorescent pseudomonad strains PF-I, PFIV and RP-3, Azospirillum brasilense strain CD, Azotobacter chroococcum strain CBD-15 and an unidentified rhizobacterium strain Z-2, and one vesicular arbuscular mycorrhiza (VAM), i.e. Endogone duseii, were applied alone or in combination with reduced inorganic fertilizer dose to onion cv. Pusa Madhavi grown during 2000-01, in New Delhi, India. Co-inoculation of VAM with non-symbiotic N2-fixing PGPR strains proved to be the best treatment to promote the growth (number of leaves per plant, plant height and shoot thickness) and yield of onion. Dual inoculation could meet almost 50% of the nitrogen and phosphorus demand of the crop. All the traits studied showed a significant increase with the application of half of the recommended dose of N and P along with VAM and PGPRs. The better performing PGPR were Azospirillum brasilense CD, Azotobacter chroococcum CBD-15, fluorescent pseudomonas strains PF-I and PF-IV. The soil available nutrients, especially N, were moderately improved after crop harvest. Biofertilizer application was also found to have influence on reducing the storage losses of cured onion. |