|Researcher||Garhwal, R. S.|
|Advisor||Qureshi, F. M.|
|Source||KrishiKosh-Indian National Agricultural Research System|
|Educational Degree||Doctor of Philosophy (Ph.D.)|
|Subject Domain (in DDC)||Technology ♦ Agriculture & related technologies ♦ Animal husbandry|
|Subject Keyword||Characterization and Classification of Important Soil Family Associations Across Different Landforms For Sustainable Land Use In Sirohi District of Rajasthan ♦ Soil Science and Agriculture Chemistry|
|Abstract||The present investigation highlight the morphological, physical and chemical properties of soils of study area and suggest, an optimum land use plan. The soils of six landforms i.e. steeply sloping side slope, undulating pediment, gently sloping pediment, nearly to very gently sloping pediment, nearly level pediment and nearly level plain exhibited wide variability in morphological, physical and chemical properties, which resulted in different responses to soil management. The soils associated with the steeply sloping side slope, gently sloping pediment (P5) and nearly to very gently sloping pediment (P6) were shallow to moderately shallow in depth. The dark brown soil colour (7.5 YR hue) was most dominant. The soils of undulating pediment (P2), gently sloping pediment (P4), nearly to very gently sloping pediment (P7) nearly level pediment (P8) and nearly level plain (P9 and P10) had moderate to very deep depth and dark brown colour except pedon P4 and P8 which had dark yellowish brown colour (10 YR hue). Soil texture varied from sandy loam to clay. The soils of gently sloping pediment (P4), nearly level pediment and nearly level plain were relatively deeper with high clay and silt fractions while, steeply sloping side slope and gently sloping pediment (P5) were of shallow depth with high sand content. Silt and clay fractions increased down the depth. Soil structure in steeply sloping side slope and undulating pediment (P3) was medium to weak sub-angular blocky and other pedons were of medium, moderate to strong sub-angular blocky structure. The water holding capacity, water retention and available water capacity was higher in gently sloping pediment (P4) and nearly to very gently sloping pediment (P6 and P7). The pH, EC and calcium carbonate were higher in undulating pediment (P3) as compared to other pedons while, the organic carbon was highest in the nearly level plain (P9). Cation exchange capacity and base saturation were lower in steeply sloping side slope landforms. An increasing trend of CEC down the depth was recorded in all soil pedons. The concentration of exchangeable bases was in the order of Ca++ > Mg++ > K+ > Na in all pedons except pedon (P3) where Na exceeded exchangeable K. * Ph.D. Scholar, Department of Agricultural Chemistry and Soil Science, RCA, Udaipur â€“ 313 001 ** Assoc. Prof., Department of Agricultural Chemistry and Soil Science, RCA, Udaipur â€“ 313 001 Silica content increased with the slope and was highest in nearly level plain while the alumina content was higher in undulating pediment (P2). The iron oxide and sesquoxide were higher in nearly level plain landforms. The uniform fine sand plus very fine sand to silt plus sand ratio suggested the uniformity with in and between the landforms. The higher silica to sesquioxide, Reiche's product index and Parker weathering index indicated low weatherability of soils of gently sloping pediment. Soils of all pedons were low to medium in available nitrogen and phosphorus, while adequate in available potassium. The DTPA-extractable micronutrient like iron, manganese, zinc and copper were found medium to high. Soils of all pedons were classified in Entisols and Inceptisols and Aridisols soils orders. All soils (except P1 and P3) were found to be moderately to marginally suitable for cereals (wheat, barley, maize, and sorghum), pluses (chickpea and cowpea) and oilseed crops (mustard and groundnut). The pedons P8, P9 and P10 were highly suitable for sorghum. The soils which are not suitable (P1 and P3) for any type of crops can be utilized for silvipasture and also for plantation of trees like mango, guava and anola by digging the pits, filling them with adequate manures and fertilizers excavated soils followed by adequate and timely irrigation till the plants are established.|
|Education Level||UG and PG|
|Learning Resource Type||Thesis|
|Size (in Bytes)||1.12 MB|
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