Kumar, DeoMishra, Suraj2022-12-022022-12-022022-07-30SURAJ MISHRA. 2022. “Assessment of Spatial Variability of Soil parameters at KVK & Regional Agriculture Research Station, Belatal Mahoba.” Thesis, M.Sc.https://krishikosh.egranth.ac.in/handle/1/5810190264The present investigation was carried out in 2021-22 with an aim to assessment of spatial variability of soil parameters at KVK and RARS Belatal Mahoba (21.82 ha), soil fertility maps using Geo statistical tools and evaluate the spatial variability of different soil parameters. The georeferenced location point soil samples were collected, processing and analysed adopting standard protocols. The data pertaining to indicated that soils of KVK and RARS Mahoba to bulk density, particle density, porosity, soil pH, electrical conductivity, organic carbon are ranged from 1.32-1.64 g cm-3 , 2.52-2.85 g cm-3 , 39.78- 49.24 %, 6.90-7.61, 0.041-0.212 dsm-1 , 0.17-0.63% with mean value of 1.55 g cm-3 , 2.72 g cm-3 , 42.95%, 7.29, 0.107 dsm-1 , 0.41%, respectively. The data pertaining to available N, P, K, S, Mn, Cu, Zn, Fe and B ranged from 162-347 kg ha-1 , 12-27 kg ha-1 , 164-370 kg ha-1 , 10-21 mg kg-1 , 12-17 mg kg-1 , 0.31-0.89 mg kg-1 , 0.23-0.78 mg kg-1 , 14-19 mg kg-1 and 0.31-0.84 mg kg-1 with mean value of 231 kg ha-1 , 19 kg ha-1 , 229 kg ha-1 , 15 mg kg-1 , 15 mg kg-1 , 0.59 mg kg-1 , 0.45 mg kg-1 , 17 mg kg-1 and 0.59 mg kg-1 , respectively. Out of total 270 samples about 59% samples are neutral and 41% samples are slightly alkaline in category. All the samples fall under non saline in nature. In aspect to organic carbon majority samples 77% were low in category, available nitrogen 80% samples were low in category, available phosphorous 93.7% samples lies under medium in category, available potassium 81% samples lies under medium in category, available sulphur 87% samples lies under medium in category, available manganese all the samples falls under high in category, available copper 99.6% near to all the samples falls under medium in category, available zinc 99.3% near to all the samples falls under low in category, available iron all the samples falls under high in category and available boron majority samples 70% lies under medium in category. Soil pH exhibited significant and positive correlation with EC (r= 0.322* ), available nitrogen (r= 0.232* ), copper (r= 0.345**) and zinc (r= 0.224* ) and negative correlated with available sulphur (r= -0.361**). Electrical conductivity exhibited significant and negative correlated with available potassium (r= -0.278**) and sulphur (r= -0.378**). Organic carbon exhibited significant and positive correlation with available nitrogen (r= 0.670**), phosphorous (r= 0.356**), potassium (r= 0.487**) and zinc (r= 0.211* ). Available nitrogen exhibited significant and positive correlation with available phosphorous (r= 0.303**), potassium (r= 0.344**) and zinc (r= 0.400**). Available phosphorous was not significantly correlated with other soil properties. Available potassium exhibited significant and positive correlation with available iron (r= 0.339**) and negative correlated with available copper (r= -0.292**). Available sulphur exhibited significant and negative correlation with available copper (r= -0.265* ). Available manganese exhibited significant and positive correlation with available zinc (r= 0.339**). Available copper was not significantly correlated with other soil properties. Available zinc exhibited significant and positive correlation with available boron (r= 0.272**). Available iron was not significantly correlated with other soil properties. The Nutrient index value (NIV) for organic carbon (1.23), available nitrogen (1.23), available zinc (1) was found in the low category, whereas nutrient index values of available phosphorus (2.06), available potassium (2.19), available sulphur (2.01), available copper (2), available boron (1.7) were found in the medium category and available manganese (3), available iron (3) were found in the high category. GIS based thematic map of soil reaction maximum 11.27 ha (51.6%) area was found of neutral soils, EC all the soils of the study area were non- saline. Predicted area of different classes in GIS based thematic map of soil organic carbon and available N showed that maximum 17.78 ha (81.5%) and 20.18 ha (92.15%) area was recorded in the low category. For available phosphorous, potassium, sulphur and boron maximum 21.6 (99%), 20.47 (93.8%), 21.73 (99.6%) and 18.65 (85.5%) area was recorded in the medium category. For available manganese and iron was recorded found all the soils of the study area were high in category. For available copper all the soils of the study area were medium in category. For available zinc all the soils of the study area were low in categoryEnglishThesis