Effect of different innovative nutrient management strategies on productivity and profitability of transplanted rice under organic production system

Byadmin January 16, 2024April 25, 2024

Rajashree¹ , Satyanarayana Rao² , B. K. Desai ³ , B. G. Mastana Reddy ⁴ , Mahadev Swamy ⁵ , Vishwanath, J⁶ , S. B. Goudar⁷

¹Department of Agronomy, College of Agriculture Raichur, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

²College of Agriculture Raichur, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

³University of Agricultural Sciences, Raichur-584104, Karnataka, India.

⁴College of Agriculture, Gangavathi, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

⁵Department of Agricultural Microbiology, College of Agriculture Raichur, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

⁶AICRP on Management of Salt Affected soils, ARS, Gangavathi, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

⁷College of Agriculture, Gangavathi, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

Corresponding Author Email: rajashreehalke@gmail.com

DOI : https://doi.org/10.58321/AATCCReview.2024.12.01.57

Keywords

Innovative practices, liquid organic manures, long term nutrient management, Natural Farming, nutrient management, organic manures, organic rice

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Abstract

A field experiment was carried out at Agricultural Research Station, Gangavathi, UAS,
Raichur, Karnataka, India during rabi/summer(2020-21), kharif (2021) and rabi/summer(2021-
22) to study the effect of different innovative organic nutrient management practices on
productivity and profitability of transplanted rice. While rice thrives in organic systems,
challenges like nitrogen stress at critical growth stages, slow mineralization of organic manures,
variety limitations, and weed competition hinder optimal yields. Hence, this experiment was
designed to study the strategic use of integrating the slow releasing organic manures and fast
mineralising liquid organic manures, split applications and alternate sources of organic sources
of nutrients was tested in long term organic rice production system. The experiment was laid out
in a randomized complete block design with three replications and ten treatments. Among all the
treatments, the treatment receiving the combined application of organic manures (75% RDN)
and liquid organic manures (Beejamrutha, jeevamrutha, 10 % cowurine and 10
%vermiwash)resulted in on par yields with that of FYM (100 % RDN), FYM+VC (100 %
RDN). In addition, these treatments resulted in higher monetary returns than that of only organic
manure applied treatment because of lower cost incurred for inputs.