Reasoned fertilization of potato in response to Nitrogen supply in Andisols

Abstract: Using the reasoned nitrogen (N) fertilization method in potato crops (Solanum tuberosum L.) requires the validation of its parameters under the probable conditions of crop response. A field experiment in an Andisol was established to assess the parameters of this method and the nitrogen ut...

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Autores principales:	Pinochet,Dante, Clunes,John, Gauna,Claudio, Contreras,Andrés
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2018
Materias:	Nitrogen fertilization potato use efficiency optimum rate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000300790
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spelling	oai:scielo:S0718-951620180003007902019-01-09Reasoned fertilization of potato in response to Nitrogen supply in AndisolsPinochet,DanteClunes,JohnGauna,ClaudioContreras,Andrés Nitrogen fertilization potato use efficiency optimum rate Abstract: Using the reasoned nitrogen (N) fertilization method in potato crops (Solanum tuberosum L.) requires the validation of its parameters under the probable conditions of crop response. A field experiment in an Andisol was established to assess the parameters of this method and the nitrogen utilization efficiency of the crop. To describe the crop N response, five statistical models were used. Dry matter production and nutrient concentration were measured in tubers, leaves, fruits and roots. At both the beginning and the end of the experiment soil samples were collected to evaluate the mineral N. The quadratic-potential model was the most appropriate to describe the positive response of the potato crop to available nitrogen, from an initial level of nitrogen (the control, zero application ) to a maximum application of 200 kg N ha-1. The relationship between the N doses and the potato yield reached a physical optimal of productivity at a rate of 228 kg N ha-1. Higher rates (300 kg N ha-1) resulted in a decrease in yield, generating phytotoxicity for cultivation. This variation allowed us to evaluate the reasoned application method under different nitrogen availabilities (deficiency, optimal and above-optimal) in addition to the variation of the parameters generated.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.3 20182018-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000300790en10.4067/S0718-95162018005002301
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nitrogen fertilization potato use efficiency optimum rate
spellingShingle	Nitrogen fertilization potato use efficiency optimum rate Pinochet,Dante Clunes,John Gauna,Claudio Contreras,Andrés Reasoned fertilization of potato in response to Nitrogen supply in Andisols
description	Abstract: Using the reasoned nitrogen (N) fertilization method in potato crops (Solanum tuberosum L.) requires the validation of its parameters under the probable conditions of crop response. A field experiment in an Andisol was established to assess the parameters of this method and the nitrogen utilization efficiency of the crop. To describe the crop N response, five statistical models were used. Dry matter production and nutrient concentration were measured in tubers, leaves, fruits and roots. At both the beginning and the end of the experiment soil samples were collected to evaluate the mineral N. The quadratic-potential model was the most appropriate to describe the positive response of the potato crop to available nitrogen, from an initial level of nitrogen (the control, zero application ) to a maximum application of 200 kg N ha-1. The relationship between the N doses and the potato yield reached a physical optimal of productivity at a rate of 228 kg N ha-1. Higher rates (300 kg N ha-1) resulted in a decrease in yield, generating phytotoxicity for cultivation. This variation allowed us to evaluate the reasoned application method under different nitrogen availabilities (deficiency, optimal and above-optimal) in addition to the variation of the parameters generated.
author	Pinochet,Dante Clunes,John Gauna,Claudio Contreras,Andrés
author_facet	Pinochet,Dante Clunes,John Gauna,Claudio Contreras,Andrés
author_sort	Pinochet,Dante
title	Reasoned fertilization of potato in response to Nitrogen supply in Andisols
title_short	Reasoned fertilization of potato in response to Nitrogen supply in Andisols
title_full	Reasoned fertilization of potato in response to Nitrogen supply in Andisols
title_fullStr	Reasoned fertilization of potato in response to Nitrogen supply in Andisols
title_full_unstemmed	Reasoned fertilization of potato in response to Nitrogen supply in Andisols
title_sort	reasoned fertilization of potato in response to nitrogen supply in andisols
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=S0718-95162018000300790
work_keys_str_mv	AT pinochetdante reasonedfertilizationofpotatoinresponsetonitrogensupplyinandisols AT clunesjohn reasonedfertilizationofpotatoinresponsetonitrogensupplyinandisols AT gaunaclaudio reasonedfertilizationofpotatoinresponsetonitrogensupplyinandisols AT contrerasandres reasonedfertilizationofpotatoinresponsetonitrogensupplyinandisols
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Reasoned fertilization of potato in response to Nitrogen supply in Andisols

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