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Evaluation of soil-test methods for predicting iron availability to sorghum (Sorghum bicolor) in alluvial soils of Punjab, India

Indian Agricultural Research Journals

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Title Evaluation of soil-test methods for predicting iron availability to sorghum (Sorghum bicolor) in alluvial soils of Punjab, India
 
Creator SANDHU, KANWALJEET
BANSAL, R L
 
Subject Critical Fe level, Soil extractants, Fe deficiency, Sorghum, Sorghum bieolor
 
Description A study was conducted during the rainy season (kharif) 1998 to explore soil-test methods for iron estimation in sorghum [Sorghum bicoior (L.) Moench] on alluvial soils. Seven chemical extractants were tested for their relative performance to predict the response of sorghum to Fe application in coarse to medium-textured alkaline alluvial soils. Three out of 7 extractants were found promising for the estimation of criticallevel of available Fe in these soils. The highest coefficients of correlation between available Fe and relative grain yield was with 1 M NH4HCO, + 0.005 M DTPA (r=0.618**), followed by IN NH40Ac + 0.1 % hydroquinone (r=0.582**) and 0.005 M DTPA (r=0.501 *). The critical deficiency level of soil available Fe with 1M NH4HC03 +0.005 M DTPA(pH 7.6),1 NNHpAc+ 0.1 % hydroquinone and 0,005 M DTPA which separated responsive soils front non-responsive ones was 15.0,22.9 and 5.8 mg/kg soil respectively.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2014-05-08
 
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/40508
 
Source The Indian Journal of Agricultural Sciences; Vol 71, No 12 (2001)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/40508/18148
 
Rights Copyright (c) 2014 The Indian Journal of Agricultural Sciences