Effect of Fertilizer Doses on Nutrient Uptake and Use Efficiencies under Different Rice Cultivation Methods

SHAIK MOHAMMAD  RAFI; A.K. THAKUR; OM PRAKASH  VERMA; RAJKUMARI BHOL; KAUSHIK KUMAR  PANIGRAHI; PRABHASMITA SHATPATHY

doi:10.54894/JISCAR.43.1.2025.159353

Authors

SHAIK MOHAMMAD RAFI Department of Plant Physiology, College of Agriculture, Odisha University of Agriculture & Technology Bhubaneswar - 751 003, Odisha, India
A.K. THAKUR ICAR-Indian Institute of Water Management, Bhubaneswar - 751 023, Odisha, India
OM PRAKASH VERMA ICAR-Indian Institute of Water Management, Bhubaneswar - 751 023, Odisha, India
RAJKUMARI BHOL Department of Plant Physiology, College of Agriculture, Odisha University of Agriculture & Technology Bhubaneswar - 751 003, Odisha, India
KAUSHIK KUMAR PANIGRAHI AICRN on Potential Crops, Odisha University of Agriculture & Technology, Bhubaneswar - 751 003, Odisha, India
PRABHASMITA SHATPATHY Department of Plant Physiology, College of Agriculture, Odisha University of Agriculture & Technology Bhubaneswar - 751 003, Odisha, India

https://doi.org/10.54894/JISCAR.43.1.2025.159353

Keywords:

Agronomic efficiency, Nutrient uptake, Rice crop, System of rice intensification

Abstract

A field experiment was conducted at ICAR-Indian Institute of Water Management Research Farm, Mendhasal, Odisha, during the Rabi (winter) season of 2024 to study the effect of different crop management practices in rice with varying NPK doses on grain yield, nutrient uptake, and their use efficiencies. The experiment was laid out in a factorial split-plot design with three replications, comprised of two crop establishment methods of rice, viz. system of rice intensification (SRI) and conventional transplanting system (CTS) in the main plot and the sub-plot treatments were T₁-0% of the recommended dose of fertilizer (RDF), T₂-25% of RDF, T₃- 50% of RDF, T₄- 75% of RDF, T₅- 100% of RDF and T₆- 125% of RDF. The recommended dose of fertilizers was 80 kg N, 40 kg P₂O₅, and 40 kg K₂O ha^-1. It was found that the highest grain yield for both SRI (5.89 t ha^-1) and CTS (4.56 t ha^-1) was observed in T₅- 100% RDF. Overall, SRI produced a 30% higher grain yield than CTS. The uptake of NPK increased significantly in both grains and straws of crops grown under SRI. N, P, and K uptake in grains increased by 33.1%, 39.2%, and 37% more under SRI than CTS. The agronomic efficiency (AE) of SRI was 27% higher than that of the CTS crop. Under SRI, nearly 43 kg of grain was produced with the application of 1 kg of fertilizer. In contrast, with CTS, only 31 kg of grain was produced with the application of 1 kg of fertilizer, a 28% decrease in the partial factor productivity of applied fertilizer compared to SRI.

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