Vol. 9 (2) : March-April 2018 issue
Green Farming Vol. 9 (2) : 296-300 ; March-April, 2018
Demand driven nutrient management for enhanced nutrient use efficiency and productivity in rice and wheat under rice-wheat cropping system
A. QURESHIa1*, D.K. SINGHb2, P.C. PANDEYb3, P.K. CHANDRAKARa4 and P.S. MARKAMa5
aCollege of Agric. & Res. Station, Kanker, - 494 334 (Indira Gandhi Krishi Vishwavidyalaya, Raipur) (Chhattisgarh),
bDepartment of Agronomy, G.B. Pant University of Agriculture & Technology, Pantnagar - 263 145 (Uttarakhand)
Designation : 1Asstt. Professor *(qureshi.ameen76@gmail.com), 2Dean, 3Asstt. Professor, 4Asstt. Professor
Subject : Agronomy and Crop Production
Paper No. : P-7160
Total Pages : 5
Received : 31 January 2018
Revised accepted : 20 March 2018
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Citation :
A. QURESHI, D.K. SINGH, P.C. PANDEY, P.K. CHANDRAKAR and P.S. MARKAM. 2018. Demand driven nutrient management for enhanced nutrient use efficiency and productivity in rice and wheat under rice-wheat cropping system. Green Farming Vol. 9 (2) : 296-300 ; March-April, 2018
ABSTRACT
Practices that improve crop N uptake can reduce N losses to the environment, thereby increasing fertilizer N use efficiency (NUE). The objective of the study was to evaluate different nutrient management approaches for enhanced nutrient use efficiencies by crop driven nutrient management by preventing the possible N losses. Due to excessive use of fertilizers in imbalanced ratios causing the low nutrient use efficiency and associated environmental problems which has raised the serious concerns about the existing nutrient management practices. Increasing N2O concentrations in the atmosphere have been linked to anthropogenic activities. Site specific nutrient management is a potent climate smart nutrient management (CSNM) technology which is able to establish synergy with crop–soil nutrient dynamics and is also able to reduce the possible threat to the environment in form of N2O emission. Treatments comprised of six location/site specific nutrient management approaches along with 4 nutrient omission treatments. The investigation results indicated that the treatment Nutrient expert recommended fertilizer under SSNM (NE-SSNM) is able to mitigate crop driven N demand at the critical stages of crops and also superior in terms of grain yield and profitability. More grain yield with less fertilizer were obtained by using SSNM (Nutrient expert recommended fertilizer) techniques in comparison to the blanket N application and other nutrient approaches, which is economically viable and environment friendly.
Key words :
Climate smart nutrient management, Nutrient decision support systems (NDSS), Nutrient use efficiency (NUE), Rice-wheat cropping system, Site specific nutrient management (SSNM).