Effects of soil physico-chemical parameters on Sclerotium rolfsii suppressiveness

Krishnendu Sen; Mithu De Roy; Suman Kumar Halder; Mukul Murmu; Bikasranjan Pati; Sk Saruk Islam; Ashis Roy Barman; Sujit Kumar Ray; Keshab Chandra Mondal; Subrata Dutta

doi:10.14232/abs.2023.1.1-10

Authors

Krishnendu Sen Vidyasagar University, Department of Microbiology/Bidhan Chandra Krishi Viswavidyalaya Department of Plant Pathology https://orcid.org/0000-0001-9805-6931
Mithu De Roy Water Management Research Station, Ranaghat
Suman Kumar Halder Vidyasagar University , Department of Microbiology
Mukul Murmu Bidhan Chandra Krishi Viswavidyalaya , Department of Plant Pathology
Bikasranjan Pati Vidyasagar University , Department of Microbiology
Sk Saruk Islam Bidhan Chandra Krishi Viswavidyalaya , Department of Plant Pathology https://orcid.org/0000-0001-8402-0663
Ashis Roy Barman Bidhan Chandra Krishi Viswavidyalaya , Department of Plant Pathology, RRS (CSZ), Bidhan Chandra Krishi Viswavidyalay
Sujit Kumar Ray Vidyasagar University , Department of Microbiology
Keshab Chandra Mondal Vidyasagar University , Department of Microbiology https://orcid.org/0000-0003-3180-1567
Subrata Dutta Bidhan Chandra Krishi Viswavidyalaya , Department of Plant Pathology

DOI:

https://doi.org/10.14232/abs.2023.1.1-10

Keywords:

aggregate stability, gangetic new alluvial region, principal component analysis, soil suppressiveness

Abstract

The relationship of soil physico-chemical parameters with disease suppressiveness property of soil is not well understood phenomenon. In this regard, the surveys were conducted on the occurrence of collar rot disease caused by Sclerotium rolfsii in two districts (North 24 Parganas and Nadia) of West Bengal Gangetic new alluvial region of India from February to March, 2016. Soil samples were screened through the disease conduciveness and suppressiveness. The physicochemical properties of soils showed that the clay loam soil dominated in new the alluvial region of West Bengal. It was found that soil suppressiveness against S. rolfsii significantly positively correlated with soil aggregate ratio (AR). PCA explained the closeness of the parameters with soil suppressive index (SI) and aggregate stability (AS). Mostly the exponential relationship has been observed among the selected physico-chemical parameters. From this study we found AR, AS and bulk density were most determining parameters for S. rolfsii soil suppressiveness. Such indicators of soil health would be very beneficial for forecasting potential risks and providing guidance on appropriate farming techniques for specific geographic areas or microclimates. However, further investigation is required to fully comprehend the impact of physical and chemical properties on soil suppressiveness.