Effect of residue incorporation and INM on productivity of spring maize (Zea mays) in rice (Oryza sativa)-based cropping system

PRIYANKA SAHOO; THAKAR  SINGH; KULVIR SINGH  SAINI; JAGMOHAN  KAUR

doi:10.56093/ijas.v94i1.143475

Authors

PRIYANKA SAHOO Punjab Agricultural University, Ludhiana, Punjab 141 004, India
THAKAR SINGH Punjab Agricultural University, Ludhiana, Punjab 141 004, India
KULVIR SINGH SAINI Punjab Agricultural University, Ludhiana, Punjab 141 004, India
Punjab Agricultural University, Ludhiana, Punjab 141 004, India

https://doi.org/10.56093/ijas.v94i1.143475

Keywords:

Grain yield, Integrated nutrient management, Net returns, Residue incorporation, Spring maize, System productivity

Abstract

A field experiment was conducted during 2019 and 2020 at the research farm of Punjab Agricultural University, Ludhiana, Punjab to study the effect of integrated nutrient management (INM) on grain yield, economics, and system productivity of spring maize (Zea mays L.) under residue incorporation in a diversified cropping system. The main plot consisted of 4 treatment combinations, viz. straw removal + 100% NPK + farmyard manure (FYM) @50 t/ha; straw removal + 150% NPK; straw incorporation + 100% NPK + FYM @50 t/ha; and straw incorporation + 150% NPK, while sub-plot consisted of 3 nutrient levels (75%, 100% and 125% NPK) applied to spring maize planted in a single row and double rows on bed. The results revealed that combined application of straw incorporation + 100% NPK + FYM @50 t/ha resulted in significantly higher grain yield (80.1 and 83.6 q/ha), net returns (259.9 and 300.2 ×10³ ₹/ha), benefit cost ratio (1.34 and 1.51) and system productivity (82.9 and 89.1 kg/ha/day) of spring maize and application of 125% NPK to double row on bed resulted in significantly higher grain yield (14.6%, 12.9%) and system productivity (5.4%, 4.7%) as compared to 100% NPK to single row on bed during 2019 and 2020, respectively. Residue incorporation along with INM increased grain yield, net returns, nutrient uptake and system productivity of spring maize.

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