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Pedotransfer functions for predicting soil hydraulic properties in semi-arid regions of Karnataka Plateau, India.

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Title Pedotransfer functions for predicting soil hydraulic properties in semi-arid regions of Karnataka Plateau, India.
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Creator Dharumarajan, S., Hegde, Rajendra, Lalitha, M., Kalaiselvi, B. and Singh, S.K.
 
Subject Pedotransfer functions, field capacity, permanent wilting point, infiltration rate, semi-arid regions.
 
Description Not Available
Soil hydraulic properties are important for irrigation scheduling and proper land-use planning. Field capacity, permanent wilting point and infiltration rate are the three vital hydraulic properties which determine the availability and retention of water for crop
growth. These properties are difficult to measure and time-consuming, but can be easily predicted from the available information like soil texture, bulk density, organic carbon content, etc. through pedotransfer functions (PTFs). PTFs were developed for field
capacity and permanent wilting point for two different regions of Karnataka, viz. Northern Karnataka Plateau (512 soil samples) and Southern Karnataka Plateau (228 soil samples), separately. PTF for infiltration rate was developed using 100 soil samples for
the entire Karnataka. Cross-validation techniques were used to validate the PTFs, and the results are satisfactory with low RMSE and higher R2 . The developed PTFs are useful in determining soil hydraulic properties of the semi-arid regions of southern India.
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Date 2020-03-21T10:54:05Z
2020-03-21T10:54:05Z
2019-01-01
 
Type Research Paper
 
Identifier Dharumarajan, S., Hegde, Rajendra, Lalitha, M., Kalaiselvi, B. and Singh, S.K. 2019. Pedotransfer functions for predicting soil hydraulic properties in semi-arid regions of Karnataka Plateau, India. Current Science, 116(7):1237-1246.
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http://krishi.icar.gov.in/jspui/handle/123456789/34306
 
Language English
 
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Publisher Not Available