Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay

Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay

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Average yield of commercial strawberry crops in southern Uruguay is below the attainable yield for production conditions, according to experimental results and the best yields of commercial crops, which determines the existence of a yield gap (YG). Furthermore, there is a wide variability between farmers. The aim of this study was to identify, hierarchize and analyze the environmental and management factors explaining yield gap in strawberry fields in southern Uruguay. We evaluated 76 strawberry crops in two production harvests in a sample of 13 farms representative of the area. We developed a method combining principles from Regional Agronomic Diagnosis and Yield Gap Analysis. We measured variables related to crop growth, development, management, yield, and environment. The statistical analysis combined path analysis, boundary lines, clusters, and regression trees. The average commercial yield was 16.9 ± 12.1 and 24.9 ± 8.1 Mg.ha-1 and the average YG was 65 and 46 % for the 2012 and 2013 harvests, respectively. Crop vegetative growth and development at early spring, measured as soil cover (SC), was the main variable explaining crop yield, affected by the date of planting, the date in which the final crop density was reached, and plant density. The commercial yields of groups with low, intermediate and high SC at early spring were of 8.7 ± 6.1, 20.0 ± 8.1 and 28.9 ± 8.5 Mg.ha-1, respectively. The relative YG for groups with intermediate and high SC was mainly explained by soil pH, crop water balance and fertilization management. Yield gaps were explained by management variables that can be improved without increasing production costs.

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Main Authors: Scarlato, Mariana, Giménez, Gustavo, Lenzi, Alberto, Borges, Alejandra, Bentancur, Óscar, Dogliotti, Santiago
Format: Digital revista
Language:spa
Published: Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA) 2017
Online Access:https://agrocienciauruguay.uy/index.php/agrociencia/article/view/174
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institution UDELAR
collection OJS
country Uruguay
countrycode UY
component Revista
access En linea
databasecode rev-agrociencia-uy
tag revista
region America del Sur
libraryname Biblioteca de la Facultad de Agronomía de la UDELAR de UY
language spa
format Digital
author Scarlato, Mariana
Giménez, Gustavo
Lenzi, Alberto
Borges, Alejandra
Bentancur, Óscar
Dogliotti, Santiago
spellingShingle Scarlato, Mariana
Giménez, Gustavo
Lenzi, Alberto
Borges, Alejandra
Bentancur, Óscar
Dogliotti, Santiago
Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay
author_facet Scarlato, Mariana
Giménez, Gustavo
Lenzi, Alberto
Borges, Alejandra
Bentancur, Óscar
Dogliotti, Santiago
author_sort Scarlato, Mariana
title Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay
title_short Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay
title_full Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay
title_fullStr Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay
title_full_unstemmed Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay
title_sort analysis and hierarchization of factors explaining strawberry cultivation yield gap in southern uruguay
description Average yield of commercial strawberry crops in southern Uruguay is below the attainable yield for production conditions, according to experimental results and the best yields of commercial crops, which determines the existence of a yield gap (YG). Furthermore, there is a wide variability between farmers. The aim of this study was to identify, hierarchize and analyze the environmental and management factors explaining yield gap in strawberry fields in southern Uruguay. We evaluated 76 strawberry crops in two production harvests in a sample of 13 farms representative of the area. We developed a method combining principles from Regional Agronomic Diagnosis and Yield Gap Analysis. We measured variables related to crop growth, development, management, yield, and environment. The statistical analysis combined path analysis, boundary lines, clusters, and regression trees. The average commercial yield was 16.9 ± 12.1 and 24.9 ± 8.1 Mg.ha-1 and the average YG was 65 and 46 % for the 2012 and 2013 harvests, respectively. Crop vegetative growth and development at early spring, measured as soil cover (SC), was the main variable explaining crop yield, affected by the date of planting, the date in which the final crop density was reached, and plant density. The commercial yields of groups with low, intermediate and high SC at early spring were of 8.7 ± 6.1, 20.0 ± 8.1 and 28.9 ± 8.5 Mg.ha-1, respectively. The relative YG for groups with intermediate and high SC was mainly explained by soil pH, crop water balance and fertilization management. Yield gaps were explained by management variables that can be improved without increasing production costs.
publisher Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA)
publishDate 2017
url https://agrocienciauruguay.uy/index.php/agrociencia/article/view/174
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spelling oai:oai.agrocienciauruguay.uy:article-1742022-12-09T19:40:58Z Analysis and Hierarchization of Factors Explaining Strawberry Cultivation Yield Gap in Southern Uruguay Análisis y jerarquización de factores determinantes de las brechas de rendimiento del cultivo de frutilla en el sur del Uruguay Scarlato, Mariana Giménez, Gustavo Lenzi, Alberto Borges, Alejandra Bentancur, Óscar Dogliotti, Santiago Fragaria x ananassa Duch. yield gap regional agronomic diagnosis crop management Fragaria x ananassa Duch. brechas de rendimiento diagnóstico agronómico regional manejo de cultivos Average yield of commercial strawberry crops in southern Uruguay is below the attainable yield for production conditions, according to experimental results and the best yields of commercial crops, which determines the existence of a yield gap (YG). Furthermore, there is a wide variability between farmers. The aim of this study was to identify, hierarchize and analyze the environmental and management factors explaining yield gap in strawberry fields in southern Uruguay. We evaluated 76 strawberry crops in two production harvests in a sample of 13 farms representative of the area. We developed a method combining principles from Regional Agronomic Diagnosis and Yield Gap Analysis. We measured variables related to crop growth, development, management, yield, and environment. The statistical analysis combined path analysis, boundary lines, clusters, and regression trees. The average commercial yield was 16.9 ± 12.1 and 24.9 ± 8.1 Mg.ha-1 and the average YG was 65 and 46 % for the 2012 and 2013 harvests, respectively. Crop vegetative growth and development at early spring, measured as soil cover (SC), was the main variable explaining crop yield, affected by the date of planting, the date in which the final crop density was reached, and plant density. The commercial yields of groups with low, intermediate and high SC at early spring were of 8.7 ± 6.1, 20.0 ± 8.1 and 28.9 ± 8.5 Mg.ha-1, respectively. The relative YG for groups with intermediate and high SC was mainly explained by soil pH, crop water balance and fertilization management. Yield gaps were explained by management variables that can be improved without increasing production costs. El rendimiento promedio de los cultivos comerciales de frutilla en el sur del Uruguay es inferior al rendimiento alcanzable para las condiciones de producción, de acuerdo a los rendimientos experimentales y los mejores resultados en cultivos comerciales, lo cual determina la existencia de una brecha de rendimiento (BR). Por otro lado, existe una gran variabilidad entre productores. El objetivo del trabajo fue identificar, jerarquizar y analizar los factores ambientales y de manejo que explican las brechas de rendimiento en el cultivo de frutilla en el sur del Uruguay. Se evaluaron 76 cultivos en dos zafras de producción en una muestra de 13 predios representativos de la zona. Desarrollamos una metodología combinando los principios del Diagnóstico Agronómico Regional y en el Análisis de BR. Se evaluaron variables de crecimiento, desarrollo, manejo, rendimiento y ambiente. El análisis estadístico combinó análisis de senderos, boundary lines, clusters y árboles de regresión. El rendimiento comercial promedio fue 16,9 ± 12,1 y 24,9 ± 8,1 Mg.ha-1 y la BR promedio fue 65 y 46 % para las zafras 2012 y 2013, respectivamente. El crecimiento y desarrollo vegetativo del cultivo a inicio de la primavera, evaluado a través de la cobertura del suelo (CS), fue el determinante principal del rendimiento, afectado por la fecha de plantación, la fecha en que se alcanzó la densidad definitiva de plantas y la densidad del cultivo. Los rendimientos comerciales de los grupos de baja, media y alta CS a inicio de la primavera fueron 8,7 ± 6,1, 20,0 ± 8,1 y 28,9 ± 8,5 Mg.ha-1, respectivamente. La brecha de rendimiento relativo en los grupos de media y alta CS fue explicada principalmente por el pH del suelo, el balance de agua en el cultivo y la fertilización durante el cultivo. La BR fue explicada por variables de manejo que podrían mejorarse sin incrementar los costos de producción. Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA) 2017-06-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://agrocienciauruguay.uy/index.php/agrociencia/article/view/174 10.31285/AGRO.21.1.6 Agrociencia Uruguay; Vol. 21 No. 1 (2017); 43- 57 Agrociencia Uruguay; Vol. 21 Núm. 1 (2017); 43- 57 Agrociencia Uruguay; v. 21 n. 1 (2017); 43- 57 2730-5066 spa https://agrocienciauruguay.uy/index.php/agrociencia/article/view/174/153 Copyright (c) 2017 Agrociencia Uruguay http://creativecommons.org/licenses/by/4.0

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