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Establishing leaf nutrient norms for arecanut (Areca catechu L.) by boundary line approach

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Title Establishing leaf nutrient norms for arecanut (Areca catechu L.) by boundary line approach
Not Available
 
Creator Bhat Ravi
Sujatha, S
 
Subject arecanut, boundary line approach, leaf nutrient norms, optimum range, nutrient ratios
 
Description Not Available
Critical and optimum leaf nutrient standards for arecanut are unknown. As nutrients are
becoming yield limiting factors in arecanut, corrective measures require development of leaf nutritional
standards. The objective of this paper was to determine optimum concentration and range
of all nutrients through boundary line approach. Optimum foliar concentrations for nitrogen (N),
phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) were established as 2.70,
0.23, 1.12, 0.61, and 0.20%, respectively, using leaf composition data from 12-year old arecanut
plantation. Optima of major nutrient concentrations were nearly identical between boundary line
approach and mean of high yielding population. Optimum micronutrient concentrations (mg kg−1)
were estimated at 146 for iron (Fe), 56.5 for manganese (Mn), 2.6 for copper (Cu), 45.8 for zinc
(Zn), 39.5 for boron (B), 432 for aluminum (Al) and 63 for sodium (Na). Optimum ranges and
ratios of different nutrients were found out from second degree polynomial equations.
Not Available
 
Date 2018-11-21T10:10:59Z
2018-11-21T10:10:59Z
2013-04-01
 
Type Research Paper
 
Identifier Ravi Bhat & S. Sujatha (2013): ESTABLISHING LEAF NUTRIENT NORMS FOR ARECANUT BY BOUNDARY LINE APPROACH, Journal of Plant Nutrition, 36:6, 849-862
0190-4167
http://krishi.icar.gov.in/jspui/handle/123456789/12401
 
Language English
 
Relation Not Available;
 
Publisher Taylor & Francis