Land Use Pattern Influences the Aggregate Stability of Soil

Sajal Pati, Dhaneshwar Padhan, A. K. Saha, Biplab Pal, A. Krishna Chaitanya, S. Dasgupta, A. Dey, G. C. Hazra

Abstract


Soil samples collected from four land use patterns namely forest, tea garden, cultivated and uncultivated land were used for analyzing the physico-chemical parameters and aggregate stability of the soil.  Result show that among the soils  analyzed, soil texture varied from loamy sand to clay loam with mean clay content in order of cultivated> forest> tea garden> uncultivated land. Bulk density (BD) of the soil showed significant negative correlation with organic matter content, soil porosity, percent base saturation and maximum water holding capacity (MWHC). Maximum water holding capacity was higher in forest soil followed by tea garden soil and the minimum in uncultivated soil. Forest, tea garden and cultivated soils were strongly acidic to moderately acidic in nature, while uncultivated soils were slightly acidic. All soils were non-saline and have low to medium cation exchange capacity (CEC) ranged from 3.70 to 15.48 Cmol(P+) kg-1. The results of aggregate stability indicated that majority of the soils showed high values of mean weight diameter (MWD) in both dry and wet sieving. Mean weight diameter and water stable aggregates were greater in forest and tea garden soils compared to cultivated soil. Mean weight diameter (dry sieving) maintained significant positive correlation with organic carbon content and cation exchange capacity. Correlations were drawn between the physico-chemical properties of soil and also among the different physical properties of soils. 

Keywords


Land Use Pattern; Soil Properties; Mean Weight Diameter; CEC; Maximum Water Holding Capacity

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