2024, Vol. 7, Special Issue 6

author(s)
Suraj Kumar, Lalitkumar Chandulal Vekaria, Luxman Kumawat, Navdeep Singh Bhati and Suraj Kumar

abstract
The present investigation was for evaluating status of sulphur in the soils of North Saurashtra Agro-climatic Zone of Gujarat state and interrelations among the forms of sulphur, for these four hundred eighty samples (10 soil samples from each taluka) were collected from the cultivated fields. The soil samples were analyzed for different forms of sulphur viz., Total S, organic S, non-sulphate S, available-S, sulphate S and water-soluble S. Mean value of 25.72 mg kg^-1 available sulphur in North Saurashtra Agro-climatic Zone of Gujarat was seen and it was ranged from 2.82 mg kg^-1 to 84.23 mg kg^-1. The overall value of range of Total S in North Saurashtra Agro-climatic Zone of Gujarat was 104.2-3381 mg kg^-1 with mean value of 867.70 mg kg^-1. On the basis of overall data organic S in North Saurashtra Agro-climatic Zone of Gujarat ranged from 77.6 mg kg^-1 to 3284 mg kg^-1 with mean value of 824.2 mg kg^-1. Non-sulphate S overall ranged from 2.6 to 224.6 mg kg^-1 in North Saurashtra Agro-climatic Zone of Gujarat was observed with mean value of 26.31 mg kg^-1. The overall range of sulphate S in North Saurashtra Agro-climatic Zone of Gujarat was recorded as 0.53-66.39 mg kg^-1 with mean value of 17.59 mg kg^-1. The water- soluble S ranged from 0.95 mg kg^-1 to 92.27 mg kg^-1 in North Saurashtra Agro-climatic Zone of Gujarat was observed with mean value of 20.52 mg kg^-1. Altogether, the soils of North Saurashtra Agro-climatic Zone of Gujarat had nutrient index values of 2.46 for available sulphur. As per data obtained, it can be concluded based on nutrient index value the soils of North Saurashtra Agro-climatic Zone of Gujarat were medium to high fertility class for available S while the Jamnagar, Amreli and Morbi districts were comparatively deficient in available sulphur on contrary to this Bhavnagar, Rajkot, Dwarka and Surendranagar were surplus in available sulphur content. It can be also concluded that decreasing order for reading of different fractions of sulphur in TS > OS> NSS > AS >WSS > SS. OS contributed maximum to TS.