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Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/32860
Title: | Categorisation of districts based on nonexchangeable potassium : Implications of efficient K fertility management in Indian agriculture. |
Other Titles: | Categorisation of districts based on nonexchangeable potassium : Implications of efficient K fertility management in Indian agriculture. |
Authors: | ICAR_CRIDA |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR_CRIDA |
Published/ Complete Date: | 2010 |
Project Code: | Not Available |
Keywords: | imlification, efficient management, agriculture |
Publisher: | Srinivasa Rao, Ch, Subba Rao, A., Rao, K.V., Venkateswarlu, B. |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | Potassic fertilizer recommendations are made based on available (exchangeable + water soluble) K status of soils in different soil testing laboratories in India. However, recent studies employing a variety of measures of nonexchangeable K indicated a very substantial contribution of nonexchangeable fraction of soil K to crop K uptake. Present paper examines the information generated in the last 30 years on the status of nonexchangeable K in Indian soils, categorization of Indian soils based on exchangeable and nonexchangeable K fractions based on GIS mapping and K recommendations considering both the fractions of soil K. Inclusion of nonexchangeable K in the soil testing aids in predicting immediate K needs of crop plants as well as long term K needs of intensive cropping systems. Based on GIS based soil K fertility maps were prepared considering both exchangeable and nonexchangeable K, K deficient districts of the country were identified where K application is a must. Some maintenance dose of K is required in some districts where, exchangeable K is high but nonexchangeable K is low or medium. These GIS-based maps and suggested recommendations help to prioritize the K efficient zones where K application is essential and higher possibility exists for improving the K use efficiency. Special care should be taken on K fertilization on high K requirement crops like banana, sugarcane, potato |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Technical Report |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Indian Journal of Fertilisers |
NAAS Rating: | 4.76 |
Volume No.: | 6(7) |
Page Number: | 40-54 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/32860 |
Appears in Collections: | NRM-CRIDA-Publication |
Files in This Item:
File | Description | Size | Format | |
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48 Categorisation of districts based on nonexchangeable potassium Implications of efficient K fertility management in Indian agriculture..pdf | 2.52 MB | Adobe PDF | View/Open |
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