A Multivariate Adaptive Regression Splines Based Study of Soil Parameters and Their Impact on Onion Yield in Bhavnagar District

Year : 2026 | Volume : 15 | Issue : 01 | Page : 53 64
    By

    Arjun Nayak,

  • K.S. Tailor,

  1. Research scholar, Department of Statistics, M. K. Bhavnagar University, Bhavnagar- 364002, Gujarat, India
  2. Assistant Professor, Department of Statistics, M. K. Bhavnagar University, Bhavnagar- 364002, Gujarat, India

Abstract

Bhavnagar district is one of the prominent onion-growing areas in the Saurashtra region of Gujarat, encompassing key talukas such as Mahuva, Talaja, Ghogha, Jesar, and Palitana. Onion cultivation in the district is carried out across three distinct seasons: rabi, kharif, and late kharif with harvesting periods extending from April to May for the rabi crop and from October to March for the kharif and late kharif crops. The productivity of onion crops is strongly influenced by soil characteristics, particularly pH balance and nutrient availability. This study examines the effects of soil pH and NPK (Nitrogen, Phosphorus, and Potassium) levels on onion yield in the Bhavnagar district of Gujarat, a major onion-producing region. A multivariate adaptive regression splines (MARS) modeling approach was employed to capture nonlinear relationships and complex interactions between soil parameters and crop yield. The MARS model effectively identified key spline functions representing critical thresholds in pH and nutrient levels that significantly impact yield. The findings provide valuable insights for site-specific soil management and precision agriculture practices, enabling farmers to optimize fertilizer application and soil conditioning strategies. This data-driven approach supports sustainable agricultural planning, improved resource-use efficiency, and enhanced crop productivity, offering a practical decision-support framework for policymakers, agronomists, and extension services involved in onion cultivation in semi-arid regions.

Keywords: Statistical Analysis, Soil Parameters, Onion crop, Regression, MARS model

[This article belongs to Research & Reviews : Journal of Agricultural Science and Technology ]

How to cite this article:
Arjun Nayak, K.S. Tailor. A Multivariate Adaptive Regression Splines Based Study of Soil Parameters and Their Impact on Onion Yield in Bhavnagar District. Research & Reviews : Journal of Agricultural Science and Technology. 2026; 15(01):53-64.
How to cite this URL:
Arjun Nayak, K.S. Tailor. A Multivariate Adaptive Regression Splines Based Study of Soil Parameters and Their Impact on Onion Yield in Bhavnagar District. Research & Reviews : Journal of Agricultural Science and Technology. 2026; 15(01):53-64. Available from: https://journals.stmjournals.com/rrjoast/article=2026/view=242187


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Regular Issue Subscription Original Research
Volume 15
Issue 01
Received 06/01/2026
Accepted 24/01/2026
Published 30/04/2026
Publication Time 114 Days
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