Ecology, Environment and Conservation Paper

Vol 25, Issue 4 2019; Page No.(1784-1788)

EFFECT OF INTEGRATED PLANT NUTRIENTS ON SOIL AND NODULE MICROBE OF ARACHIS HYPOGEA

R. Mala, N. Maheswari and A.S. Ruby Celsia

Abstract

Indian population is predicted to increase from 1.21 billion in 2011 to 1.6 billion in 2050. Integrated nutrient management is essential to sustain agricultural productivity. The present study is aimed to investigate the integrated use of organic and inorganic fertilizer in a slow release form on the microbial count of soil and nodules of Arachis hypogea. The treatments included were control urea, super phosphate and potash as quick release fertilizer (QRF), urea, super phosphate and potash mixed with neem cake in the ratio of 1:5- slow release fertilizer (SRF), Panchagavya (PG), Effective microorganisms-EM purchased from commercial stores and the integrated use of plant nutrients by the combination of slow release fertilizer and Panchagavya (IPNS). The chlorophyll content was 1.9321 mg/g, 1.723, 2.28, 2.27, 2.3 and 2.837 mg/g on 10th control, QRS, SRS, PG, EM and IPNS. Total soil microbial population was 6.0×105 /g, 2.4×105, 2.6×105, 41×105, 33×105 and 44×105/g in control, QRF, SRF, PG, EM IPNS on 10th day. Rhizobium population was 1.8×105 CFU/g 0×105 CFU/g, 2.58×105, 8.22×105, 7.77×105 and11×105 CFU/g in control, QRS, SRS, PG, EM and IPNS on 20th day. Thus the study demonstrated that the integrated use of chemical and organic nutrients increased the soil and microbial population of Arachis hypogea.

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