Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents

A chlorophyll meter can conveniently estimate foliar chlorophyll and nitrogen (N) contents in many species. The objective of this study was to evaluate the utility of a chlorophyll meter to inform nitrogen fertilization rates of tea (Camellia sinensis L.) at different places and times. Plot-scale (5...

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Autores principales:	Liu,Z.A, Yang,J.P, Yang,Z.C
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2012
Materias:	chlorophyll indicator nitrogen nutrition nitrogen partitioning SPAD reading tea leaves
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000200013
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spelling	oai:scielo:S0718-951620120002000132012-09-10Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contentsLiu,Z.AYang,J.PYang,Z.C chlorophyll indicator nitrogen nutrition nitrogen partitioning SPAD reading tea leaves A chlorophyll meter can conveniently estimate foliar chlorophyll and nitrogen (N) contents in many species. The objective of this study was to evaluate the utility of a chlorophyll meter to inform nitrogen fertilization rates of tea (Camellia sinensis L.) at different places and times. Plot-scale (5 x 20 m) experiments with three replications were conducted in 2010. Each plot was treated with 248 kg pure N ha-1 per year as urea. At the same time, a field-scale (32 ha) experiment, with the same fertilization rate, was conducted at the same plantation. Tea leaves were sampled in August and November and analyzed with a chlorophyll meter in situ and in the lab. The chlorophyll and nitrogen contents and chlorophyll meter (SPAD) readings of tea leaves in August were greater than in November, and plot-scale values were greater than field-scale values. SPAD readings could estimate the chlorophyll content of tea leaves regardless of temporal and spatial considerations. However, space and time must be considered when using SPAD readings to estimate the nitrogen content of tea leaves.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.12 n.2 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000200013en10.4067/S0718-95162012000200013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	chlorophyll indicator nitrogen nutrition nitrogen partitioning SPAD reading tea leaves
spellingShingle	chlorophyll indicator nitrogen nutrition nitrogen partitioning SPAD reading tea leaves Liu,Z.A Yang,J.P Yang,Z.C Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents
description	A chlorophyll meter can conveniently estimate foliar chlorophyll and nitrogen (N) contents in many species. The objective of this study was to evaluate the utility of a chlorophyll meter to inform nitrogen fertilization rates of tea (Camellia sinensis L.) at different places and times. Plot-scale (5 x 20 m) experiments with three replications were conducted in 2010. Each plot was treated with 248 kg pure N ha-1 per year as urea. At the same time, a field-scale (32 ha) experiment, with the same fertilization rate, was conducted at the same plantation. Tea leaves were sampled in August and November and analyzed with a chlorophyll meter in situ and in the lab. The chlorophyll and nitrogen contents and chlorophyll meter (SPAD) readings of tea leaves in August were greater than in November, and plot-scale values were greater than field-scale values. SPAD readings could estimate the chlorophyll content of tea leaves regardless of temporal and spatial considerations. However, space and time must be considered when using SPAD readings to estimate the nitrogen content of tea leaves.
author	Liu,Z.A Yang,J.P Yang,Z.C
author_facet	Liu,Z.A Yang,J.P Yang,Z.C
author_sort	Liu,Z.A
title	Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents
title_short	Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents
title_full	Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents
title_fullStr	Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents
title_full_unstemmed	Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents
title_sort	using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000200013
work_keys_str_mv	AT liuza usingachlorophyllmetertoestimatetealeafchlorophyllandnitrogencontents AT yangjp usingachlorophyllmetertoestimatetealeafchlorophyllandnitrogencontents AT yangzc usingachlorophyllmetertoestimatetealeafchlorophyllandnitrogencontents
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Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents

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