JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
About Journal
    Home
    Obituary: Dr. R. C. Dalela
    Editorial Board
    Reviewer Panel
    Publication Policies
    Guidelines for Editors
    Guidelines for Reviewers
    Abstracting and Indexing
    Subscription and Payments
    Contact Journal
    About Triveni Enterprises
 
Read Journal
    Current Issue
    Journal Archives
 
For Authors
    Guidelines for Authors
    Terms and Conditions
    Fees and Payments
    Track Paper Status
 

Google Search the Journal web-site:


    Abstract - Issue Jan 2017, 38 (1)                                     Back


nstantaneous and historical temperature effects on a-pinene

Soil microbial dynamics and enzyme activities as influenced

by organic and inorganic nutrient management in

vertisols under aerobic rice cultivation

 

S. Jaffar Basha1*, R. Basavarajappa2, Geeta Shirnalli3 and H.B. Babalad1

1Department of Agronomy, College of Agriculture, Dharwad- 580 005, India

2Department of Agronomy and Head, Staff Training Unit, Dharwad-580 005, India

3Agricultural Microbiology, AICRP on Renewable energy sources, MARS, Dharwad-580 005, India

*Corresponding Author E-mail: shaik.jaffarbasha@gmail.com

 

 

 

Key words

Aerobic rice,

Chemical fertilizers,

Enzymatic activity,

Microbial population,

Organic manure, Vertisol

 

  

Publication Data

Paper received : 10.11.2015

Revised received : 11.03.2016

Re-revised received : 13.06.2016

Accepted : 13.07.2016

 

Abstract

Aim : An experiment was conducted to determine the effect of organic and inorganic nutrient management practices on dynamics of soil microbial biomass and enzyme activities in vertisols under aerobic rice cultivation during kharif 2013 and 2014 at Main Agricultural Research Station, Dharwad.

 

Methodology : The experiment consisted of twenty four treatment combinations, comprising of six main plots (manurial practices) and four sub plots (liquid organic manures), which were replicated thrice. The seeds of variety MAS-26, developed specifically for aerobic rice production from UAS, Bengaluru were used.

 

Results : Integrated application of Farm Yard Manure (FYM) (1/3) + vermicompost (1/3) + green leaf manure (1/3) equivalent to Recommended Dose of Nitrogen (RDN) with recommended FYM + microbial consortium (Azospirillum + PSB) with soil application of biodigester @ 2500 l ha-1 at 30, 60 and 90 DAS recorded significantly higher nitrogen fixers (42.7 and 39.8 x103 cfu g-1 soil), PSB (44.2 and 41.8 x104 cfu g-1 soil), Azospirillum spp. population (3.95 and 0.80 x106 cfu g-1 soil), dehydrogenase (15.7 and 14.3 g TPF g-1 soil day-1) and phosphatase (29.9 and 28.7 g pNP g-1 soil h-1) at flowering and harvest, respectively.

 

Interpretation : Higher soil microbial population viz., N fixers, PSB, Azospirillum spp. and soil enzyme activity of dehydrogenase and phosphatase at flowering and harvest was with the application of FYM (1/3) + vermicompost (1/3) + green leaf manure (1/3) equivalent to RDN of 100 kg ha-1 with recommended FYM (5 t ha-1) and microbial consortium (Azospirillum + PSB) with soil application of biodigester in aerobic rice.

 

 

Copyright ? 2017 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).