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Crop Research

Influence of Nano DAP on growth and yield performance of kharif rice (Oryza Sativa L.)


DOI: 10.31830/2454-1761.2026.CR-1115    | Article Id: CR-1115 | Page : 246-253
Citation :- Influence of Nano DAP on growth and yield performance of kharif rice (Oryza Sativa L.). Crop Res. 61: 246-253
KARUKURI VISHNU, GUNTAMUKKALA SEKHAR, TANMOY SHANKAR, BISHNUPRASAD DASH, GIDIJALA LIKHITHA BHAVANI, SITABHRA MAJUMDER AND CHINTA AKHILA guntamukkala.sekhar@cutm.ac.in
Address : Department of Agronomy and Agroforestry, M.S. Swaminathan School of Agriculture, Centurion University of Technology and Management, Paralakhemundi-761211, Odisha, India
Submitted Date : 5-05-2026
Accepted Date : 13-06-2026
Online Published:

Abstract

Rice (Oryza sativa L.) is a major staple crop essential for global food security, yet conventional phosphorus fertilization exhibits low use efficiency. Significant nutrient losses result in increased input costs and environmental problems such as eutrophication and soil degradation. Therefore, improving phosphorus use efficiency through advanced approaches like nano fertilizers is crucial for sustainable rice production. To evaluate this, a field trial was carried out to study the effect of nano DAP on the growth and yield of kharif rice (variety: RNR 15048) at Post Graduate Research Farm, M. S. Swaminathan School of Agriculture, Centurion University of Technology and Management, Paralakhemundi, Odisha, in kharif season 2025-26. The experiment was conducted in a Randomised Block Design with eight treatments, including different rates of phosphorus application through DAP in combination with recommended doses of nitrogen and potassium and foliar application of nano DAP. Treatments ranged from absolute control and recommended dose of fertilisers to reduced phosphorus levels (75% and 50% P2O5 through DAP) combined with full nitrogen and potassium. The nano DAP was foliar applied at a rate of 4 ml/L during the AT stage and PI stage, either as a single application or at both stages, in order to study its efficiency in improving growth and production of rice. The highest values of growth attributes like plant height (143.2 cm), tiller number (333tillers/m2), dry matter accumulation (1475 g/m2), yield attributing characters i.e., effective tillers (286/m2), number of filled spikelets/panicle (164/panicle), panicle length (164 cm) and test weigh (15.21 g) was observed in treatment T7 with the application of nano 75% P, 100% N and K2O in combination with two foliar spray of nano DAP. Similarly, treatment T7 (75% P, 100% N and K2O in combination with two foliar sprays of nano DAP) recorded maximum grain yield (5.44 t/ha), straw yield (8.33 t/ha) and biological yield (13.77 t/ha) and economic parameters like cost of cultivation (56374 INR/ha), gross returns (144346 INR/ha), net returns (87971 INR/ha) and benefit cost ratio (1.6). The lowest values for all the parameters were recorded in absolute control.

Keywords

Economics foliar spray nano DAP rice grain yield

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