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Title Dr
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Creator Jeena Mathew , V. Krishnakumar , V.Srinivasan, Ravi Bhat , C.G.Narayanan- Namboothiri, A. Abdul Haris
 
Subject Boron, coconut, sandy soil, critical level
 
Description Not Available
An experiment was conducted to standardize the critical boron level in soil and leaf samples of coconut palms
grown in a typical Entisol of the Onattukara region of Kerala, India. Graded levels of boron as borax were
applied at 0, 6, 12, 18 and 24 g per palm per year in four split doses. The critical boron level in soil and leaves was standardized using the following methods: the Cate and Nelson graphical (CN) method, the Mistcherlich equation (ME), and the quadratic plateau response (QP) method. In the CN method, the critical level of boron
in soil and leaves was 0.48 mg kg-1 and 11.5 mg kg-1, respectively. In the ME model, the critical boron level
in soil and leaves was 0.46 mg kg-1 and 7.55 mg kg-1, respectively. In the QP response curve, the critical level of boron in soil was estimated to be 0.87 mg kg-1, and in the leaf, the critical level was found to be 13.27 mg kg-1. Because the level estimated via the graphical method and by the Mistcherlich equation is similar with
regard to the soil boron, 0.48 mg kg-1 can be considered as the critical boron level in soil. Regarding the critical boron level in the leaf, values estimated via the CN method and the QP response curve are in proximity, and, hence, the critical boron level in leaf is 13.27 mg kg-1. These results suggest the application of 160 g of borax in four split doses when the levels of boron in soil and leaves fall below the estimated critical values for better use efficiency
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Date 2018-11-22T09:10:06Z
2018-11-22T09:10:06Z
2018
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/12780
 
Language English
 
Relation Not Available;
 
Publisher Chilean Society of Soil Science