Effect of Different Land Use Systems on Soil Quality under Subtropical Region of Jammu
Loading...
Date
2022-04
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
Soil quality degradation is a major challenge in sub-tropical region of Jammu. This poses a great threat to soil quality of this particular area. Thus, a study was conducted to evaluate the effect of different land uses on physico-chemical, biological parameters and on soil quality. Geo-referenced soil samples were collected from five different land uses of subtropical region of Jammu and analyzed in thedivision of soil science and agricultural chemistry, FOA, SKUAST-J, Chatha for different physical, chemical, and biological attributes. The results showed that the forest land resulted in reduced surface and sub-surface compaction, highest water holding capacity and saturated hydraulic conductivity and better aggregate stability and pore-size distribution as compared to agriculture land use and higher water retention in surface and sub-surface soil depths, was registered in grassland followed by forest, agroforestry, horticulture and lowest in agriculture. Available N and K were highest in the soil depths of forest and lowest in agriculture land use but available P was highest under agriculture land use and lowest under horticulture land use. Forest land use registered highest organic carbon content in the surface and sub-surface soil depths and lowest in agriculture. Labile carbon was found to be highest in forest and lowest in grassland system. Highest CEC was recorded in forest land and lowest in agriculture land. Forest soils were found to have the highest content of exchangeable Ca and Mg and it was least in the agriculture soils. In case of sodium the horticulture land use registered highest content in both the depths and forest recorded the least. DTPA extractable zinc was highest in forest and lowest in grassland. Horticulture land use registered greatest content of DTPA extractable iron and copper in the surface and sub-surface soil depths and lowest in grassland. Whereas DTPA extractable iron and lowest in grassland. Agriculture land use registered highest content of extractable manganese in the surface and sub-surface soil depths and lowest in grassland. Forest land use recorded highest soil DHA, SMBC, SMBN, alkaline phosphates and microbial population in the surface and sub-surface soil depths followed by grassland, horticulture, agroforestry and lowest in agriculture. The selected soil quality indicators from various land uses, namely DHA, macro aggregates, clay, and phosphorous, are most appropriate soil quality indicators. SQI as affected by different land uses was followed the trend Forest > Grassland > Agroforestry >Horticulture >Agriculture. The Forest land use obtained maximum SQI was at par with that in grassland but significantly higher than that in Agroforestry, Horticulture and Agriculture. Forest land use had 21.7 per cent higher SQI than that in agriculture
Description
Keywords
Citation
Preferred for your work: Devi.M.2022. Effect of Different Land Use Systems on Soil Quality under Subtropical Region of Jammu, Ph.D Thesis, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu