PLANT GROWTH-PROMOTION POTENTIAL OF PHOSPHATE SOLUBILIZING ACTIOMYCETES FROM WAYANAD SOILS
Publication Date : 08/02/2016
Abstract Phosphours is the second important key element after nitrogen as a mineral nutrient in terms of quantitative plant requirement. Although abundant in soils, in both organic and inorganic forms, its availability is restricted as it occurs mostly in insoluble forms. Deficiency of phosphorus in soil results in reduction in plant metabolism and growth since for all plant Phosphorus is an essential plant nutrient. Wayanad District of Kerala depends on Agriculture for sustainability. To satisfy crop nutritional requirements, Phosphours is usually added to soil as chemical P fertilizer, however synthesis of chemical P fertilizer is expensive, moreover, plants can use only a small amount of this P since 75–90% of added P is precipitated by metal–cation complexes, and rapidly becomes fixed in soils. In such a situation phosphate-solubilizing Actinomycetes have been seen as best eco-friendly agent for P nutrition of crop. This study focuses on the diversity of PSA, effect on plant growth, P solubilisation capacity, the present and future scenario of their use and for application of this knowledge in managing a sustainable environmental system.
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