Research on Crops

Assessment of yield, chlorophyll content and nutrient use efficiency in potato crop under site-specific nutrient management using the QUEFTS Model


DOI: 10.31830/2348-7542.2025.ROC-1192    | Article Id: ROC-1192 | Page : 306-311
Citation :- Assessment of yield, chlorophyll content and nutrient use efficiency in potato crop under site-specific nutrient management using the QUEFTS Model. Res. Crop. 26: 306-311
DHARMENDRA KUMAR, NEERAJ KUMAR, C. N. RAM, SURESH KUMAR, RAJESH KUMAR, S. B. SINGH AND SHIPRA YADAV drneerajkumar@nduat.org
Address : Department of Soil Science and Agricultural Chemistry, Acharya Narendra Deva University of Agriculture & Technology, Kumarganj-224229, Ayodhya, Uttar Pradesh, India
Submitted Date : 11-04-2025
Accepted Date : 29-04-2025
Online Published:

Abstract

Solanum tuberosum (L.), the world’s fourth most important food crop, is a nutrient-intensive vegetable requiring precise fertilisation for optimal growth and yield. Conventional blanket fertiliser recommendations often result in inefficient nutrient use and environmental concerns. This study applies the QUEFTS model within site-specific nutrient management (SSNM) to improve nutrient efficiency and tuber productivity through balanced fertiliser strategies to local conditions. In this regard, a field experiment was carried out at the Vegetable Research Farm, Acharya Narendra Deva University of Agriculture & Technology, Kumarganj, Ayodhya, Uttar Pradesh, India, under the AICRP on potato during the Rabi seasons of 2022–23 and 2023-24. The study was conducted in the middle Indo-Gangetic Plains using a Randomized Block Design (RBD) comprising 10 treatment combinations comprising 75%, 100%, and 125% NPK based on both recommended and QUEFTS-based doses, along with absolute control without NPK each replicated three times. The results indicated that the highest tuber yield (36.14 t/ha), haulm yield (15.41 t/ha), chlorophyll content (19.05 mg/plant) and nutrient use efficiency (82.22%) were observed in treatment 125% NPK as per QUEFTS model. In contrast, the lowest tuber yield (19.92 t/ha), haulm yield (8.91 t/ha), and chlorophyll content (10.89 mg/plant) were recorded in treatment without NPK (absolute Control). Nutrient application based on the QUEFTS model helps assess soil nutrient status, enabling balanced fertilization to sustain potato productivity, improve soil health and nutrient availability.

Keywords

Chlorophyll content nutrient use efficiency. QUEFTS model site-specific nutrient management yield

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