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Plant Science Today (PST)

Research Articles

Vol. 13 No. sp5 (2026): Recent Advances in Agriculture

Modulation of growth, yield and nutrient uptake of rice (Oryza sativa L.) through integrated nutrient management

DOI
https://doi.org/10.14719/pst.15561
Submitted
14 May 2026
Published
30-09-2026

Abstract

A field experiment was carried out during kharif season of 2022–23 and 2023–24 at the Agronomy Main Research Farm, CoA, OUAT, Bhubaneswar. The experiment was laid out in randomised block design (RBD) with 12 treatments and replicated thrice. The rice variety “Kalinga Dhan 1201” was transplanted in kharif season with 12 treatments. The pooled analysis results revealed that application of T9 resulted in maximum plant height (118.4 cm), tillers m-2 (372), dry matter accumulation (1207 g m-2) at harvest. The maximum leaf area index (4.91), chlorophyll index readings (53.8) and green seeker readings (0.82) were recorded at 75 days of transplanting. Similarly, the superior yield attributing characters like panicles m-2 (377), filled grains panicle-1 (160.6), test weight (24 g) and yield parameters like grain yield (5804 kg ha-1) and straw yield (6598 kg ha-1) and was statistically comparable to to other zinc (Zn)-supplemented treatments. The present study clearly demonstrates that integrated nutrient management (INM) is an effective strategy for enhancing rice growth, yield and nutrient uptake under irrigated conditions. Among the treatments evaluated, the application of 75 % soil test-based nitrogen (STBN) supplemented with 25 % nitrogen through vermicompost along with zinc sulphate (ZnSO₄) proved to be the most effective, resulting in superior crop performance and improved nutrient absorption.

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