Nutrient use efficiency of groundnut with organic manures
Ramakrishna , Suneetha Devi K.B
Department of Agronomy, College of Agriculture/ Professor Jayashankar Telangana State Agricultural University Telangana, India.
V. Sailaja
Department of Soil Science And Agricultural Chemistry krishi vignan Kendra, Gantasala, Acharya N.G. Ranga Agricultural University, Andhra Pradesh, India.
Saritha J.D
Department of Soil Science And Agricultural Chemistry College of Agriculture Professor Jayashankar Telangana State Agricultural University Telangana India
Abstract
Field experiment was conducted on groundnut during kharif, 2014 at College of Agriculture, Rajendranagar, Hyderabad to study the effect of four organics (vermicompost with P enrichment using 3 % rock phosphate, vermicompost prepared with mushroom spent substrate, vermicompost and FYM) at two levels of nitrogen (100 % RDN i.e., 30 kg ha-1 and 75 % RDN i.e., 22.5 kg ha-1) along with control (No NPK but gypsum @ 500 kg ha-1 at flower initiation) and absolute control (no NPK and gypsum) to find out the effect of different organic sources on nutrient use efficiencies viz., partial factor productivity, agronomic efficiency, partial nutrient balance, apparent recovery efficiency, internal utilisation efficiency and physiological efficiency. Significantly higher agronomic efficiency and partial productivity factor of 86.7 and 174.63 are obtained due to application of 75% RDN through of P (3%) enriched vermicompost; while apparent recovery efficiency of N was significantly higher (4.08 and 4.03 to absolute control and control with applied gypsum) when applied at 100% RDN level.
Groundnut, organics and nutrient use efficiencies
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© ASEA
Received: 25.05.2017
Revised: 11.06.2017
Accepted: 10.07.2017
First Online: 21.12. 2017
Publisher Name: Action for Sustainable Efficacious Development and Awareness (ASEA)
Print : 0972-3099
Online :2278-5124