Absorption of NPK in Leaf and Bulb of Onion (Allium cepa L) under Varying Water Quality and Nitrogen Fertigation

NPK Content in onion under water quality and N fertigation


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Authors

  • Avni Sharma Department of Soil Science, Punjab Agricultural University, Ludhiana-141004
  • N Gupta Department of Soil Science, Punjab Agricultural University, Ludhiana-141004
  • A Malik Punjab Agricultural University, Regional Research Station, Bathinda-151005
  • KS Sekhon Punjab Agricultural University, Regional Research Station, Bathinda-151005

https://doi.org/10.56093/jsswq.v17i1.147527

Keywords:

Conventional Irrigation, Drip, Irrigation water quality, N fertigation, Nutrient uptake, Onion, Salinity

Abstract

An experiment was conducted in randomized complete block design to study the impact of varying water qualities viz. canal water (CW), poor quality saline tube well water (TW) and alternate CW and TW (CW-TW) and three N fertigation levels [ 100% (N100), 120% (N120) and 140% (N140) of recommended dose of N (RDN)] under surface drip irrigation (DI) and with 120% RDN under conventional irrigation (CI) on absorption of NPK in leaf and bulb of onion (Allium cepa L.) at Jodhpur Farm of PAU Regional Research Station, Bathinda. The onion plants were divided into leaves and bulb at 60 days after transplanting (DAT). With the increase in irrigation water salinity a decrease in N, P and K content and nutrient uptake in both plant parts was observed. CW and TW under DI, recorded the highest and the lowest macronutrient content and uptake in leaves and bulb of onion, whereas CW-TW registered the intermediate values for these macronutrients. Highest fertigation of 140 % RDN under DI recorded the maximum content of N, P and K in both the plant parts.CI held the significantly lower N, P and K content and uptake in both plant parts with CW, TW and CW-TW than DI at the same 120% RDN. It is concluded that assimilation of NPK in both leaves and bulb at 60 DAT was higher in DI than CI at 120% RDN, irrespective of water quality. However, cyclic use of good quality canal water and poor quality saline tube well water (CW-TW) under DI with 20% higher N fertigation than the recommended absorbed higher NPK in comparison with TW, though eventually lower than CW.

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Submitted

2024-01-17

Published

2025-06-30

Issue

Vol. 17 No. 1 (2025): JSSWQ

Section

Articles

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Journal of Soil Salinity and Water Quality serves as an official organ of the Indian Society of Soil Salinity and Water Quality (ISSSWQ) for the publication of research papers, reviews, and short communications as per the constitution and by-laws of the society. Soft and hard copy of the journal are sent free to all its members. All disputes are subject to the exclusive jurisdiction of competent court and forums in Kamal only. The society does not assume any responsibility for opinion by the authors in the articles and no-material in any form can be reproduced without the prior permission of the society. The society is not responsible for any delay, whatsoever, in publication/ delivery of the periodicals to the subscribers due to unforeseen circumstances or postal delay. The society does not vouch for any claims made by the advertisers of products and services. The publisher and the editors shall not be held liable for any consequences in the event of such claim not being honoured by the advertisers.

How to Cite

Sharma, A., N Gupta, A Malik, & KS Sekhon. (2025). Absorption of NPK in Leaf and Bulb of Onion (Allium cepa L) under Varying Water Quality and Nitrogen Fertigation: NPK Content in onion under water quality and N fertigation. Journal of Soil Salinity and Water Quality, 17(1), 92-99. https://doi.org/10.56093/jsswq.v17i1.147527