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Crop Research

Effect of micro-sprinkler fertigation on the morphophysiological traits and yield in groundnut (Arachis hypogaea L.) 


DOI: 10.31830/2454-1761.2026.CR-1116    | Article Id: CR-1116 | Page : 303-311
Citation :- Effect of micro-sprinkler fertigation on the morphophysiological traits and yield in groundnut (Arachis hypogaea L.). Crop Res. 61: 303-311
SANCHANA DHAS A K, RAMADASS S, SARAVANA KUMAR M AND NAGAJOTHI R ramadass@srmist.edu.in
Address : SRM College of Agricultural Sciences, SRM Institute of Science and Technology, Baburayanpettai, Chengalpattu-603201, Tamil Nadu, India
Submitted Date : 8-05-2026
Accepted Date : 1-06-2026
Online Published:

Abstract

Groundnut (Arachis hypogaea L.) is an important oilseed crop contributing to edible oil production and nutritional security, requiring efficient irrigation and nutrient management under limited water resources. However, conventional irrigation and fertilization practices are associated with significant water and nutrient losses, resulting in low resource use efficiency and suboptimal productivity. Therefore, optimization of irrigation scheduling and fertigation under microsprinkler systems is essential to enhance crop productivity, water and nutrient use efficiency, and overall sustainability. The field experiment was carried out during the Rabi, 2025-26 at the SRM College of Agricultural Sciences farm, SRM Institute of Science and Technology, Baburayanpettai, Chengalpattu, Tamil Nadu, India. The study was to evaluate the effects of different irrigation and fertigation levels on the growth, physiological and yield parameters of groundnut under a micro-sprinkler fertigation (MSF) system. The experiment was laid out in a Randomised Block Design with three replications and ten treatments consisting of different combinations of irrigation levels (125%, 100% and 75% of ETc) and fertigation levels (125%, 100% and 75% of RDF). Groundnut variety GG7 was used as the test variety. The results revealed that irrigation and fertigation significantly influenced the crop's growth, physiological and yield parameters. Among the treatments, MSF with 125% RDF @ 125% ETc (T1) recorded the highest plant height (16.90 cm at 30 DAS and 37.57 cm at 60 DAS), number of branches per plant (4.84 and 7.11), dry matter production (1665 and 2955 kg/ha), leaf area index (1.30 and 3.09), SPAD value (37.30 and 47.50) at 30 and 60 DAS, respectively. Also, pod yield (2810 kg/ha), haulm yield (4955 kg/ha) and harvest index (0.362) were recorded higher in the treatment (T1). The lowest values were recorded for most parameters in MSF with 75% RDF @ 75% ETc (T9). The study indicates that the micro sprinkler irrigation combined with higher fertigation levels improves crop growth, physiological performance, and yield parameters in groundnut, thereby enhancing productivity and resource use efficiency.

Keywords

Crop Growth fertigation groundnut microsprinkler yield  

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