Effect of site-specific nutrient management in conservation agriculture-based maize in north-western India

MOHAMMAD HASANAIN; V.K. SINGH; S.S. RATHORE; KAPILA SHEKHAWAT; R.K. SINGH; B.S. DWIVEDI; P.K. UPADHYAYA; SANJEEV SINGH

doi:10.59797/ija.v66i2.2849

Authors

MOHAMMAD HASANAIN
V.K. SINGH
S.S. RATHORE
KAPILA SHEKHAWAT
R.K. SINGH
B.S. DWIVEDI
P.K. UPADHYAYA
SANJEEV SINGH

DOI:

https://doi.org/10.59797/ija.v66i2.2849

Keywords:

Green Seeker, Nutrient Expert, Permanent raised bed, Precision nutrient management, Resi- due management

Abstract

An experiment was conducted during the rainy (kharif) season of 2018 and 2019 at New Delhi, to study the ef- fect of tillage, residue and nutrient-management options on yield, profitability and energy budgeting of maize (Zea mays L.). Growing maize under permanent raised bed (PRB) showed significantly (P<0.05) higher grain yield (5.98 and 6.01 t/ha), protein content (9.97 and 10.04 %), protein yield (596.8 and 603.8 kg/ha), production efficiency (PE) (55.4 and 55.6 kg/ha/day) and monetary efficiency (ME) (548.7 and 587.5 `/ha/day) over conventional till (CT) plot. Increment ingrain yield (7.35 and 7.14 %), protein content (1.60 and 1.50 %), protein yield (8.68 and 8.50), PE (4 and 3.8 kg/ha/day) and ME (59.0 and 62.2 `/ha/day) were noticed under residue retained plot over no-residue plot during 2018 and 2019 respectively. Application of nutrient as per nutrient expert + GreenSeeker (NE + GS) resulted in higher grain yield (5.79 and 5.82 t/ha), protein content (9.97 and 10.03 %), protein yield (578.0 and 584.8 kg/ha), PE (53.6 and 53.9 kg/ha/day) and ME (523.6 and 561.5 `/ha/day) over NE alone and soil test-based recommendation (STB) options during 2018 and 2019 respectively. Maximum N content in grain and stover was recorded with PRB with residue retention along with nutrient application as NE and GS-based recom- mendation, while P and K contents in grain and stover did not differ significantly among the treatment combination during 2018 and 2019 respectively. Overall results revealed that growing maize on permanent raised bed along with 3 t/ha residue retention on surface and precision nutrient prescription using nutrient expert and green seeker optical sensor is a promising option for sustainable higher productivity, quality and profitability of maize in inten- sively cultivated area of Indo-Gangatic Plains.

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