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Molybdenum status and critical limit in the soil for green gram (Vigna radiata) growing in Madurai and Sivagangai districts of Tamil Nadu, India

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Title Molybdenum status and critical limit in the soil for green gram (Vigna radiata) growing in Madurai and Sivagangai districts of Tamil Nadu, India
 
Creator Velmurugan,, R.
 
Contributor Mahendran, P. P.
Wani, Suhas
Uttam, Kumar
Prabhavathi, M.
 
Subject soil available mo
critical limit
application of mo
madurai
sivagangai
 
Description A survey was undertaken during 2008 to determine molybdenum (Mo) status of soils and to establish critical
limits in soils of Madurai and Sivagangai districts of Tamil Nadu. A total of 202 surface soil samples were
collected from 16 soil series of the study areas based on their percent coverage. The samples were analyzed for
extractable or available Mo. Extractable Mo varied from 0.028 to 0.661 mg kg 1 and 0.035 to 0.961 mg kg 1
at Madurai and Sivagangai districts, respectively. Based on the results of a pot culture experiment, the critical
limit of available Mo was determined to be 0.043mg kg 1 for green gram [Vigna radiata (L.) Wilczek] (Var;
CO 6) in both the districts. Based on this critical limit, we classified the soils into three categories: (1) low:
0.082 mgkg 1. Green gram responded highly
to Mo application in soils below the critical limit whereas soils with Mo greater than 0.082 mgkg 1 did not
respond. Among rates of Mo application, 0.075 mgkg 1 showed better yield than others. Overall, 3–41%
and 7–46% of total area in Madurai and Sivagangai districts were in the low to medium Mo status,
respectively. The application of 0.075 mg of Mokg 1 or 0.4 kg ha 1 as sodium molybdate was sufficient to
optimize green gram yield in the major soil series of the districts. These results will be useful in decisionmaking
to apply Mo for improving green gram yields in the two districts studied.
 
Date 2013-02-28
2017-01-05T19:41:09Z
2017-01-05T19:41:09Z
 
Type Journal Article
 
Identifier https://mel.cgiar.org/dspace/limited
R. Velmurugan, P. P. Mahendran, Suhas Wani, Kumar Uttam, M. Prabhavathi. (28/2/2013). Molybdenum status and critical limit in the soil for green gram (Vigna radiata) growing in Madurai and Sivagangai districts of Tamil Nadu, India. Soil Science and Plant Nutrition, 59 (2), pp. 229-236.
https://hdl.handle.net/20.500.11766/5226
Timeless limited access
 
Language en
 
Rights CC-BY-NC-4.0
 
Format PDF
 
Publisher Taylor & Francis (Routledge)
 
Source Soil Science and Plant Nutrition;59,(2013) Pagination 229,236