Differential vineyard fertilizer management based on nutrient,s spatio-temporal variability

Conventionally, vineyard fertilizer management has been based on information from composite soil samples and no account has been taken of the existing spatial variability in soil fertility. This study presents a quantitative analysis of soil phosphorus (P2O5) and potassium (K2O) content as well as p...

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Autores principales:	Serrano,João, Silva,J. Marques da, Shahidian,S., Silva,L.L., Sousa,A., Baptista,F.
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2017
Materias:	Fertilizer management vineyard spatial variability plant nutrition NDVI apparent soil electrical conductivity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100005
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spelling	oai:scielo:S0718-951620170001000052017-09-27Differential vineyard fertilizer management based on nutrient,s spatio-temporal variabilitySerrano,JoãoSilva,J. Marques daShahidian,S.Silva,L.L.Sousa,A.Baptista,F. Fertilizer management vineyard spatial variability plant nutrition NDVI apparent soil electrical conductivity Conventionally, vineyard fertilizer management has been based on information from composite soil samples and no account has been taken of the existing spatial variability in soil fertility. This study presents a quantitative analysis of soil phosphorus (P2O5) and potassium (K2O) content as well as pH carried out in an 80 ha vineyard, during 2011 and 2013 in order to identify their spatial variability and temporal stability. Additionally a quantitative analysis of plant P2O5 and K2O content was carried out in 2013 with the objective of evaluating the spatial variability of plant nutrients.In 2013 a contact sensor was used to survey soil apparent electrical conductivity (ECa) and an active optical sensor was used to measure the plant Normalized Difference Vegetation Index (NDVI). The results showed a low potential for implementing site-specific management of phosphorus fertilizer but an interesting potential for implementing site-specific management of potassium fertilizer and pH correction. The concentration of P2O5 and K2O in the plant showed a CV<30%, with adequate values in almost the entire area of the field, in contrast to the concentration of these main macronutrients in the topsoil. These results show that for differential nutrient management of vineyards, plant nutrient concentration is a more stable tool than soil nutrients concentration. The ECa and the NDVI presented weak correlations with soil and plant concentration of, , respectively, P2O5 and K2O, which shows that further development of vegetation operational sensors is needed to support decision making in the vineyard fertilization management.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.17 n.1 20172017-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100005en10.4067/S0718-95162017005000004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Fertilizer management vineyard spatial variability plant nutrition NDVI apparent soil electrical conductivity
spellingShingle	Fertilizer management vineyard spatial variability plant nutrition NDVI apparent soil electrical conductivity Serrano,João Silva,J. Marques da Shahidian,S. Silva,L.L. Sousa,A. Baptista,F. Differential vineyard fertilizer management based on nutrient,s spatio-temporal variability
description	Conventionally, vineyard fertilizer management has been based on information from composite soil samples and no account has been taken of the existing spatial variability in soil fertility. This study presents a quantitative analysis of soil phosphorus (P2O5) and potassium (K2O) content as well as pH carried out in an 80 ha vineyard, during 2011 and 2013 in order to identify their spatial variability and temporal stability. Additionally a quantitative analysis of plant P2O5 and K2O content was carried out in 2013 with the objective of evaluating the spatial variability of plant nutrients.In 2013 a contact sensor was used to survey soil apparent electrical conductivity (ECa) and an active optical sensor was used to measure the plant Normalized Difference Vegetation Index (NDVI). The results showed a low potential for implementing site-specific management of phosphorus fertilizer but an interesting potential for implementing site-specific management of potassium fertilizer and pH correction. The concentration of P2O5 and K2O in the plant showed a CV<30%, with adequate values in almost the entire area of the field, in contrast to the concentration of these main macronutrients in the topsoil. These results show that for differential nutrient management of vineyards, plant nutrient concentration is a more stable tool than soil nutrients concentration. The ECa and the NDVI presented weak correlations with soil and plant concentration of, , respectively, P2O5 and K2O, which shows that further development of vegetation operational sensors is needed to support decision making in the vineyard fertilization management.
author	Serrano,João Silva,J. Marques da Shahidian,S. Silva,L.L. Sousa,A. Baptista,F.
author_facet	Serrano,João Silva,J. Marques da Shahidian,S. Silva,L.L. Sousa,A. Baptista,F.
author_sort	Serrano,João
title	Differential vineyard fertilizer management based on nutrient,s spatio-temporal variability
title_short	Differential vineyard fertilizer management based on nutrient,s spatio-temporal variability
title_full	Differential vineyard fertilizer management based on nutrient,s spatio-temporal variability
title_fullStr	Differential vineyard fertilizer management based on nutrient,s spatio-temporal variability
title_full_unstemmed	Differential vineyard fertilizer management based on nutrient,s spatio-temporal variability
title_sort	differential vineyard fertilizer management based on nutrient,s spatio-temporal variability
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100005
work_keys_str_mv	AT serranojoao differentialvineyardfertilizermanagementbasedonnutrientsspatiotemporalvariability AT silvajmarquesda differentialvineyardfertilizermanagementbasedonnutrientsspatiotemporalvariability AT shahidians differentialvineyardfertilizermanagementbasedonnutrientsspatiotemporalvariability AT silvall differentialvineyardfertilizermanagementbasedonnutrientsspatiotemporalvariability AT sousaa differentialvineyardfertilizermanagementbasedonnutrientsspatiotemporalvariability AT baptistaf differentialvineyardfertilizermanagementbasedonnutrientsspatiotemporalvariability
_version_	1714206554786365440

Differential vineyard fertilizer management based on nutrient,s spatio-temporal variability

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