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Pedotransfer functions for predicting points on the moisture retention curve of Indian soils

Indian Agricultural Research Journals

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Title Pedotransfer functions for predicting points on the moisture retention curve of Indian soils
 
Creator CHAKRABORTY, D
MAZUMDAR, S P
GARG, R N
BANERJEE, S
SANTRA, P
SINGH, RAVENDER
TOMAR, R K
 
Subject Bulk density; Matric potential; Pedo-transfer function; Soil moisture; Texture
 
Description Limited numbers of pedotransfer functions (PTFs) for predicting the soil moisture transmission parameters are available for the Indian soils. These PTFs have been developed from limited datasets and are area specific, limiting their applicability elsewhere. Secondary data from various sources often have non-systematic errors and lacking in uniformity. The present study makes an attempt to explore the possibility of developing PTFs from wide textural range of Indian soils for four points on the moisture retention curve, –33, –100, –500 and –1 500 kPa. Moisture content at these four matric potentials was significantly related to clay and sand but little or no correlation was observed with bulk density and organic C content in soils. For each potential, six sets of regression equations were used to predict the moisture content from textural composition, bulk density and organic C content. The predictive potential is better by considering only clay and silt at –33 and –500 kPa while clay, silt and bulk density gave good moisture predictability at –100 and –1 500 kPa potential values. The developed PTFs for moisture contents at –33 and –1 500 kPa were evaluated with existing PTFs and were found to perform satisfactorily.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2011-11-02
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/12026
 
Source The Indian Journal of Agricultural Sciences; Vol 81, No 11 (2011)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/12026/5813
 
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