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Vertical Distribution and Variability of Available Nutrients in Southern Mango-Supporting Belts of Karnataka

Indian Agricultural Research Journals

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Title Vertical Distribution and Variability of Available Nutrients in Southern Mango-Supporting Belts of Karnataka
 
Creator Kaushik Saha
K.S. Anil Kumar
Jagdish Prasad
 
Subject Primary nutrient
mango-supporting soils
micronutrient stock
vertical and spatial distribution of nutrients
 
Description The nutrient inadequacy and/or nutrient mining owing to intensive cultivation warrants for delineation of spatial and vertical distribution of essential nutrients for sustainable yield management. The objective of the present study was to evaluate the relationship between soil characteristics and the vertical distribution of the nutrients in southern mango belts (SMB) of Karnataka. Nine major taluks (Magadhi, Ramanagara, Gubbi, Tumkur, Bangalore North, Hoskote, Chintamani, Mulabaghilu, and Srinivasapura) were selected on the basis of area and production of mango. Data indicated deficiency of nitrogen throughout the profiles of study areas, and in general availability of primary nutrients decreased with depth. Ramanagara, Tumkur, and Gubbi had adequate available phosphorus, while Mulabaghilu, Srinivasapura, and Magadhi soils were found to be deficient. Exchangeable calcium and magnesium in soils were found to be sufficient thoughout the mango-supporting track of study area. Ramanagara Taluk under southern dry zone (SDz) had maximum concentration of micronutrients but their deficiencies were found in Ultisols of Gubbi and Tumkur along with Mulabaghilu taluk. Correlation analysis revealed that soil pH had the significant negative correlation (p<0.05) with iron, manganese and copper, whereas organic matter had the positive correlation (p<0.01) with all the available nutrients. Vertical distribution of nutrient stock in surface (0-30 cm) and control section (30-100 cm) and its impact on yield and productivity of mango, helped to identify nutrient deficit taluks namely, Gubbi and Mulabaghilu and also to advocate nutrient management strategies for sustainable mango production.
 
Publisher Indian Society of Soil Science
 
Date 2024-07-01
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/JISSS/article/view/153279
 
Source Journal of the Indian Society of Soil Science; Vol. 72 No. 2 (2024): Journal of the Indian Society of Soil Science; 208-217
0974-0228
0019-638X
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/JISSS/article/view/153279/54965