Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol

Abstract: 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. T...

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Autores principales:	Mathew,Jeena, Krishnakumar,V., Srinivasan,V., Bhat,Ravi., Namboothiri,C.G. Narayanan, Haris,A. Abdul
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2018
Materias:	Boron coconut sandy soil critical level
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000200376
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spelling	oai:scielo:S0718-951620180002003762018-11-21Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical EntisolMathew,JeenaKrishnakumar,V.Srinivasan,V.Bhat,Ravi.Namboothiri,C.G. NarayananHaris,A. Abdul Boron coconut sandy soil critical level Abstract: 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 that 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.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.18 n.2 20182018-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000200376en10.4067/S0718-95162018005001203
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Boron coconut sandy soil critical level
spellingShingle	Boron coconut sandy soil critical level Mathew,Jeena Krishnakumar,V. Srinivasan,V. Bhat,Ravi. Namboothiri,C.G. Narayanan Haris,A. Abdul Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol
description	Abstract: 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 that 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.
author	Mathew,Jeena Krishnakumar,V. Srinivasan,V. Bhat,Ravi. Namboothiri,C.G. Narayanan Haris,A. Abdul
author_facet	Mathew,Jeena Krishnakumar,V. Srinivasan,V. Bhat,Ravi. Namboothiri,C.G. Narayanan Haris,A. Abdul
author_sort	Mathew,Jeena
title	Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol
title_short	Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol
title_full	Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol
title_fullStr	Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol
title_full_unstemmed	Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol
title_sort	standardization of critical boron level in soil and leaves of coconut palms grown in a tropical entisol
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000200376
work_keys_str_mv	AT mathewjeena standardizationofcriticalboronlevelinsoilandleavesofcoconutpalmsgrowninatropicalentisol AT krishnakumarv standardizationofcriticalboronlevelinsoilandleavesofcoconutpalmsgrowninatropicalentisol AT srinivasanv standardizationofcriticalboronlevelinsoilandleavesofcoconutpalmsgrowninatropicalentisol AT bhatravi standardizationofcriticalboronlevelinsoilandleavesofcoconutpalmsgrowninatropicalentisol AT namboothiricgnarayanan standardizationofcriticalboronlevelinsoilandleavesofcoconutpalmsgrowninatropicalentisol AT harisaabdul standardizationofcriticalboronlevelinsoilandleavesofcoconutpalmsgrowninatropicalentisol
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Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol

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