Physicochemical Properties of Soil under Different Landuse Systems
1999
Saha, B. | Samra, J.S. | Singh, K. | Juneja, M.L.(Central Soil and Water Conservation Research and Training Institute, Chandigarh (India). Research Centre)
Perennial vegetative covers have been reported to be more suitable as compared to traditional cropping for conservation of limited resources like soil and water in the rainfed foothill region of north India. Different silvipastoral systems of pure Eucalyptus, Bhabbar(Eulaliopsis binata), Eucalyptus + Bhabbar grass and Eucalyptus + Vetivera were investigated on the basis of available soil moisture, soil physical properties and nutrient availability in quantitative multivariate sense. pH and soil texture remained almost same in all the systems and organic carbon content was higher (2.5 g kg-1) in the silvipastoral systems than in the cropped land (1.5 g kg-1). Available phosphorus increased remarkably in the pure Bhabbar plot (14 kg ha-1) relative to others (7.5 kg ha-1). Available potassium varied from 78 kg ha-1 to 113 kg ha-1. Moisture percentage was greater in pure Eucalyptus, pure Bhabbar grass and Eucalyptus + Bhabbar plots than other systems. Equilibrium infiltration rate, cumulative infiltration and sorptivity values varied in the order: cultivated cropped land = Eucalyptus + Bhabbar Eucalyptus + Vetivera Eucalyptus Bhabbar. Philip's model appeared to be more suitable than Kostiakov's model to explain infiltration characteristics. Soil moisture related parameters-cumulative infiltration, sorptivity and moisture content (90-120 cm depth) and soil chemical parameters like available phosphorus and organic carbon were found to be important discriminators of different land uses. On the basis of investigated parameters, biomass yield and commercial value, Eucalyptus + Bhabbar system appeared to be sustainable and resource conserving in Shivalik foothills of north India.
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