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Surface crusting as a constraint to sustainable management on a tropical Alfisol: I. Soil physical properties

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Relation http://oar.icrisat.org/8126/
 
Title Surface crusting as a constraint to sustainable management on a tropical Alfisol: I. Soil physical properties
 
Creator Bajracharya, R M
Cogle , A L
Lal, R
Rao, K P C
Smith, G D
Yule, D F
 
Subject Soil Science
 
Description Physical properties related to crust formation were assessed on a clayey-skeletal, mixed, isohyperthermic Udic Rhodustalf in India. A critical proportion (30 to 40%) of fine-textured fractions, particularly silt, appeared to be important in structural crust formation due to aggregate breakdown, rainfall compaction, and particle rearrangement of the surface soil. Significantly higher water dispersible clay percentage (7.1%) and dispersion ratio (0.34) at 60 days after planting (DAP) indicated diminished structural stability and increased slaking tendency of surface aggregates. Infiltration rates decreased by 40 to 60% in tilled bare systems from 0 to 60 DAP. Termite activity appeared to increase cumulative infiltration and steady state infiltration rate although additional research is required to determine the precise nature of its influence on porosity and pore continuity. Soil cover and biological components may be manageable factors to improve soil structure and stability, as well as to reduce crusting and its associated adverse effects in the semiarid tropics
 
Publisher Taylor and Francis
 
Date 1996
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/8126/1/JouSusAgri_8_5_25-44_1996.pdf
Bajracharya, R M and Cogle , A L and Lal, R and Rao, K P C and Smith, G D and Yule, D F (1996) Surface crusting as a constraint to sustainable management on a tropical Alfisol: I. Soil physical properties. Journal of Sustainable Agriculture, 8 (4). pp. 25-44. ISSN 1044-0046