Synergistic Effects of Root Dipping and Foliar Application of NPK (19:19:19) on Growth and Yield in Kharif Rice (Oryza sativa L.)

Authors

  • Supiyan Ali Dept. of Agronomy, Seacom Skills University, Birbhum, West Bengal (731 236), India
  • Hasim Kamal Mallick Dept. of Agronomy, Institute of Agricultural Science, University of Calcutta, Kolkata, West Bengal (700 019), India
  • Noor Khaiyam Dept. of Seed Science and Technology, Institute of Agricultural Science, University of Calcutta, Kolkata, West Bengal (700 019), India
  • Amrita Lal Kundu Dept. of Agronomy, Seacom Skills University, Birbhum, West Bengal (731 236), India

DOI:

https://doi.org/10.23910/2/2026.7217a

Keywords:

Assimilate partitioning, foliar application, intensive cultivation, root dipping

Abstract

A field experiment was conducted during the kharif season of 2025-26 at Seacom Skills University, West Bengal, to evaluate the effect of root dipping and foliar application of NPK (19:19:19) on the growth and yield of rice. The experiment was laid out in a randomized block design with nine treatments and three replications, involving different combinations of root dipping, recommended dose of fertilizers (RDF; 80:60:40 kg N:P₂O₅: K₂O ha-1), and foliar nutrition. The treatments were treatments were: T1-Absolute control, T2-Only root dipping; T3-RDF 100%; T4-Root dipping+RDF 100%; T5-Root dipping+RDF 50% (all basal); T6-Root dipping+50% RDF (N in split 50%, 25%, 25%); T7-Root dipping+(foliar application of NPK 19:19:19); T8-All foliar spray only NPK 19:19:19; T9-Root dipping+50% RDF (as basal)+foliar spray NPK 19:19:19. (Foliar spray: N:P: K 19:19:19 liquid fertilizer at 15-day intervals starting from 10 DAT up to milking stage, Root dipping: roots of uprooted seedlings dipped in NPK 19:19:19 @ 5 g l-1 water). Results showed that integrated nutrient management significantly improved growth and yield. T6 recorded higher early plant height (65.17 cm at 30 DAT) and crop growth rate (6.29 g m-2 day-1 at 60 DAT). T4 produced the tallest plants (97.0 cm), highest tillers (466.2 m-2), and maximum dry matter (708.67 g m-2). Highest grain yield was obtained in T4 (4488.3 kg ha-1), comparable with T3 and T9, while T9 recorded the highest harvest index (42.9%). The study clearly demonstrates that integration of root dipping with soil and foliar application of NPK enhances nutrient use efficiency, improves growth and productivity of kharif rice.

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Published

10-09-2026

How to Cite

Ali, S., Mallick, H. K., Khaiyam, N., & Kundu, A. L. (2026). Synergistic Effects of Root Dipping and Foliar Application of NPK (19:19:19) on Growth and Yield in Kharif Rice (Oryza sativa L.). International Journal of Economic Plants, 13(Sep, 5), 01–08. https://doi.org/10.23910/2/2026.7217a

Issue

Vol. 13 No. Sep, 5 (2026)

Section

Articles

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Copyright (c) 2026 PP House

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