Record ID No. |
1118 |
Author(s) |
Somani,L .L., Dadhich,S.K , 2005 |
Affiliation |
Department of Agricultural Chemistry & Soil Science, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur (Rajasthan) - 313 001, India. |
Title |
Some microbial interventions in phosphorus nutrition of plants |
Source. Vol.(no):Page |
Indian-Journal-of-Fertilisers. 1(2): 21-28p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biological Interaction |
Sub-subjects |
Phosphorus solubilizers |
Host |
Plants |
Organism |
AMF, Phosphorous solubilizing Microbes(PSM) |
Country |
India, Asia |
Abstracts |
Phosphorus is next to nitrogen only which is limiting in majority of Indian soils. Besides, the phosphorus use efficiency of applied fertilizers varied from 15-25% only. The phosphatic biofertilizers viz. phosphate solubilizing microorganisms (PSM) and vesicular arbuscular mycorrhiza (VAM) improves the situation to some extent. PSM increase the solubility of native and applied phosphorus. Phosphorus uptake improved considerably in VAM inoculated plants even when present in very low concentration in soil solution. External mycelium of VAM fungi extends far away from the root surface, can bypass the depletion zone surrounding the root and exploit soil phosphorus beyond nutrient depleted zone. PSM synergistically interact with VAM fungi. In spite of significant role of VAM in phosphorus nutrition and protection from pathogens, its use is limited because of difficulties associated with multiplication of VAM fungi on commercial scale. The paper made an insight to the mechanism, potential and limitations in use of phosphatic biofertilizers with special reference to VAM. |