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Assessing soil fertility of a laterite soil in relation to yield of arecanut (Areca catechu L.) in humid tropics of India

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Title Assessing soil fertility of a laterite soil in relation to yield of arecanut (Areca catechu L.) in humid tropics of India
Not Available
 
Creator Bhat Ravi
Sujatha, S
Jose, C. T.
 
Subject Laterite soil Ultisols Optimum nutrient Arecanut Nutrient uptake
 
Description Not Available
The purpose of the study was to determine optimum nutrient norms for laterite soils (Ultisols) and to assess
quantitative relationship of soil fertility, leaf nutrients and nutrient uptake with yield of arecanut. At 0ā€“30 cm
soil depth, optimum nutrient concentration for P, K, Ca, Mg, Fe, Mn, Cu, Zn and B was established as 15, 192,
925, 179, 37, 88, 26, 5.5 and 1.4 mg kgāˆ’1, respectively. Optimum ranges for different nutrients were found
out from second degree polynomial equations. Optimum nutrient values were higher for laterite soils in
arecanut tract than generalized guidelines for interpretation of soil analysis data. Multivariate analysis of nutrient
data indicated that nutrient uptake/removal would explain the variability in yield more than actual
nutrient concentrations in soil and leaf with high degree of relation (R2=0.92ā€“0.98). Stepwise regression
analysis identified the soil and leaf nutrient variables with a significant influence on the kernel yield of
arecanut. The loadings of principal component analysis were in confirmation with the correlations among
the nutrient variables and yield. The study clearly establishes the direct and significant relationship between
soil nutrient status/nutrient uptake and yield. The findings of the study give scope for precision agriculture
and judicious use of inputs.
Not Available
 
Date 2018-11-21T10:10:42Z
2018-11-21T10:10:42Z
2012-05-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/12400
 
Language English
 
Relation Not Available;
 
Publisher Elsevier