FORMS OF SULPHUR IN THE SOILS OF NORTH SAURASHTRA AGRO-CLIMATIC ZONE OF GUJARAT 3498
| dc.contributor.advisor | Suraj Kumar Dr. L. C. Vekaria | |
| dc.contributor.author | SURAJ KUMAR | |
| dc.contributor.other | (Registration No-2010120084) | |
| dc.date.accessioned | 2023-12-02T16:57:44Z | |
| dc.date.available | 2023-12-02T16:57:44Z | |
| dc.date.issued | 2022-08 | |
| dc.description.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. For establishing the relationship among forms of sulphur, co efficient of correlation, regression co-efficient and path co-efficient were worked out. 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 data revealed that lowest mean value of available S (21.01 mg kg-1 ) was obtained from the samples of Amreli district while highest mean value of available S (31 mg kg 1 ) was found in the samples of Bhavnagar district. 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 . The data explained that minimum value of total S (484.5 mg kg-1 ) was obtained from the samples of Rajkot district however the data revealed that maximum total S (1089 mg kg-1 ) was found in the samples of Bhavnagar district on overall mean basis. 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 . The data brought to light that lowest mean value of organic S (443.9 mg kg-1 ) was recorded from the soil samples of Rajkot district and highest mean value of organic S (1040 mg kg-1 ) was recorded from the soil samples of Bhavnagar district. 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 data disclosed that minimum mean value of non-sulphate S (24.09 mg kg-1 ) was obtained from the samples of Morbi district on contrary to this, highest mean value of non-sulphate S (29.66 mg kg-1 ) was found in the soil samples of Jamnagar. 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 outcome data explained that lowest mean value of sulphate S (13.89 mg kg-1 ) was obtained from the samples of Amreli district on other hand highest mean value of sulphate S (21.66 mg kg-1 ) was recorded in the soil samples of Devbhoomi Dwarka. 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 . The data exhibited that lowest mean value of water soluble S (19.16 mg kg-1 ) was obtained from the samples of Jamnagar district while highest mean value of water soluble S (23.88 mg kg-1 ) was found in samples of Bhavnagar district. Altogether, the soils of North Saurashtra Agro-climatic Zone of Gujarat had nutrient index values of 2.46 for available sulphur. About 9.37 per cent samples were tested as low class (< 10 mg kg-1 ), 34.58 per cent samples were under medium class (10-20 mg kg-1 ) for available S and 56.04 per cent sample falls in high available S class (> 20 mg kg-1 ). In the soil of North Saurashtra Agro-climatic Zone of Gujarat sulphate sulphur exhibited a significant positive correlation with available sulphur among almost all the district. Water soluble sulphur showed highly significant and positive relationship with available sulphur in almost all the representive samples soil of North-Saurashtra. Organic sulphur was significantly and positively correlated with total sulphur almost in almost all soils. The regression of available-S with another forms of sulphur were explained the variation from 54 % upto 82 %. However, accessible sulphur was impacted to its largest extent by the water soluble form followed by the sulphate form in Surendranagar, Jamnagar, Devbhumi- Dwarka and Morbi. Whereas in the soil of Rajkot, Amreli and Bhavnagar accessible sulphur was impacted to its largest extent by the sulphate form followed by the water soluble form. Through path diagram, it was concluded that water soluble sulphur (Surendranagar, Jamnagar, Devbhoomi-Dwarka and Morbi) and sulphate sulphur (Rajkot, Amreli and Bhavnagar) ascribed maximum direct positive effect on heat soluble sulphur or available sulphur. Other forms like organic and non-sulphate also exhibited direct positive effect (Rajkot, Jamnagar etc) and direct negative influence (Amreli, Surendranagar etc) on accessible sulphur. Beneficial effect of total sulphur was seen in the soil of Amreli Surendranagar and Devbhoomi-Dwarka while detrimental effect was seen in Rajkot, Jamnagar, Morbi and Bhavnagar. 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 | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810202079 | |
| dc.language.iso | English | |
| dc.pages | 191 | |
| dc.publisher | JAU JUNAGADH | |
| dc.relation.ispartofseries | 3498 | |
| dc.sub | Soil Science and Agriculture Chemistry | |
| dc.theme | FORMS OF SULPHUR IN THE SOILS OF NORTH SAURASHTRA AGRO-CLIMATIC ZONE OF GUJARAT 3498 | |
| dc.these.type | M.Sc | |
| dc.title | FORMS OF SULPHUR IN THE SOILS OF NORTH SAURASHTRA AGRO-CLIMATIC ZONE OF GUJARAT 3498 | |
| dc.type | Thesis |