Site-specific nutrient management under conservation agriculture-based spring wheat in Trans-Gangetic Plains of India

MOHAMMAD HASANAIN; V K SINGH; S S RATHORE; KAPILA SHEKHAWAT; R K SINGH; B S DWIVEDI; ARTI BHATIA; P K UPADYAYA

doi:10.56093/ijas.v91i5.113097

Authors

MOHAMMAD HASANAIN ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
V K SINGH ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
S S RATHORE ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
KAPILA SHEKHAWAT ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
R K SINGH ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
B S DWIVEDI ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
ARTI BHATIA ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
P K UPADYAYA ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India

https://doi.org/10.56093/ijas.v91i5.113097

Keywords:

Conservation agriculture, Crop growth, Site-specific nutrient management, Trans-Gangetic Plain, Wheat yield

Abstract

The experiment was conducted during 2018-19 and 2019-20 at ICAR-IARI research farm, to see the effect of crop establishment and nutrient management options on growth and yield of wheat under maize-wheat system. The experiment was laid out in split plot design with 03 replications, comprising conventional tillage without residue (CT-R), conventional tillage with 3 t/ha residue (CT+R), permanent raised bed without residue (PRB-R) and permanent raised bed with 3 t/ha residue (PRB+R) in main plot and nutrient management, viz. soil test-based(STB), Nutrient Expert® based (NE) and NE+ GreenSeekerTM based recommendations (NE+GS) in sub-plot. A significantly (P≤0.05) higher crop growth, viz. plant height, dry matter accumulation and leaf area index under PRB+R compared to other crop establishment technique. Differentyield parameters (yield, grain straw ratio and harvest index) and yield attributes of wheat grown under PRB+R were significantly higher (P≤0.05) over other crop establishment technique. A significantly (P≤0.05) higher crop growth, yield attributes, grain yield (5.01 and 5.05 t/ha), grain: straw ratio (0.65 and 0.65) and harvest index (39.31 and 39.36) of wheat were recorded with NE+GS based fertilization during 2018-19 and 2019- 20, respectively. Pearson correlation matrix analyzed for different growth and yield parameters showed a significant positive correlation (r) among themselves. Study infer that growing of wheat on the permanent raised bed along with 03 t/ha residue retention on surface and precision nutrient prescription using NE and GreenSeekerTM optical sensor showed promise for sustainable high productivity in intensively cultivated Trans-Gangetic Plains.

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