Soil Microbial Population and Soil Enzyme Activity under Organic and Conventional Management Systems in Low Land Rice Ecosystem System of Godavari Delta, Andhra Pradesh

Author: A. Sireesha, V. Bhuvaneswari and P.V. Satyanarayana

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Abstract

A field experiment was conducted in wet land condition during rabi season of 2016-17 at Regional Agricultural Research Station, Maruteru to evaluate the production potential of rice (Oryza sativa L.) under organic farming and conventional farming system. The main aim of this study is to compare soil microbial activity and soil enzymatic activity (dehydrogenase, acid phosphatase, alkaline phosphatase, urease) in organic and conventional farming systems. As the soil enzymes are natural mediators and catalysts of many important soil processes, such as: decomposition of organic matter released into soil during plant growth, processes of soil humus formation and decomposition, the release of mineral nutrients and their supply to plants. The package followed for organic farming was insitu incorporation of green manure crop (Diancha), application of Farm Yard Manure @10t/ha as basal and application of Neem cake @500 kg/ha in two splits at tillering and PI stage. Under inorganic farming chemic

Keywords

Organic farming, conventional farming, soil microbial population and soil enzyme activity.

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