VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZER

ABSTRACT Fossilized red guano and organic controlled-release fertilizers are among the N fertilizers that can be used in organic production. There is little information about the impacts of these fertilizers on the vegetative growth, fruit yield and quality, and mineral contents in fruits. The objec...

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Autores principales:	von Bennewirz,Eduardo, Cazanga-Solar,Rodrigo, Carrasco-Benavides,Marcos, Fredes,Claudio, Alba-Mejía,Jhonny Edison, Losak,Tomas
Lenguaje:	English
Publicado:	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias 2017
Materias:	Organic fruit production organic fertilizers physiological disorders mineral content
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902017000300213
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spelling	oai:scielo:S0719-389020170003002132018-01-03VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZERvon Bennewirz,EduardoCazanga-Solar,RodrigoCarrasco-Benavides,MarcosFredes,ClaudioAlba-Mejía,Jhonny EdisonLosak,Tomas Organic fruit production organic fertilizers physiological disorders mineral content ABSTRACT Fossilized red guano and organic controlled-release fertilizers are among the N fertilizers that can be used in organic production. There is little information about the impacts of these fertilizers on the vegetative growth, fruit yield and quality, and mineral contents in fruits. The objective of this study was to assess the responses of increasing levels of N fertilization with fossilized red guano and a controlled-release fertilizer (Fertil®) on the vegetative growth, fruit yield, quality and mineral composition of 'Granny Smith' apples grown under organic management. Treatments included the application of increasing levels of N fertilization (100, 120 and 170 kg N ha-1) applied 50% during early spring and 50% during early summer. In general, trees with higher levels of N fertilization showed greater terminal shoot length and trunk cross-sectional area (TCSA) than those of the control treatment. Yield ranged from 60.0 to 62.0 kg tree-1, as well as fruit mineral concentration and ratios were not affected by the treatments. Leaf mineral concentrations were affected only in the case of N. Bitter pit incidence was low (1.4 in a scale 1-4), and therefore not statistically significant. Both fertilizers proved effective in enhancing vegetative growth compared to the control. Fertilizer applications did not affect tree cropping, fruit firmness, TSS, starch index, fruit ground color and incidence of physiological disorders.info:eu-repo/semantics/openAccessUniversidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias VeterinariasChilean journal of agricultural & animal sciences v.33 n.3 20172017-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902017000300213en10.4067/S0719-38902017005000603
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Organic fruit production organic fertilizers physiological disorders mineral content
spellingShingle	Organic fruit production organic fertilizers physiological disorders mineral content von Bennewirz,Eduardo Cazanga-Solar,Rodrigo Carrasco-Benavides,Marcos Fredes,Claudio Alba-Mejía,Jhonny Edison Losak,Tomas VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZER
description	ABSTRACT Fossilized red guano and organic controlled-release fertilizers are among the N fertilizers that can be used in organic production. There is little information about the impacts of these fertilizers on the vegetative growth, fruit yield and quality, and mineral contents in fruits. The objective of this study was to assess the responses of increasing levels of N fertilization with fossilized red guano and a controlled-release fertilizer (Fertil®) on the vegetative growth, fruit yield, quality and mineral composition of 'Granny Smith' apples grown under organic management. Treatments included the application of increasing levels of N fertilization (100, 120 and 170 kg N ha-1) applied 50% during early spring and 50% during early summer. In general, trees with higher levels of N fertilization showed greater terminal shoot length and trunk cross-sectional area (TCSA) than those of the control treatment. Yield ranged from 60.0 to 62.0 kg tree-1, as well as fruit mineral concentration and ratios were not affected by the treatments. Leaf mineral concentrations were affected only in the case of N. Bitter pit incidence was low (1.4 in a scale 1-4), and therefore not statistically significant. Both fertilizers proved effective in enhancing vegetative growth compared to the control. Fertilizer applications did not affect tree cropping, fruit firmness, TSS, starch index, fruit ground color and incidence of physiological disorders.
author	von Bennewirz,Eduardo Cazanga-Solar,Rodrigo Carrasco-Benavides,Marcos Fredes,Claudio Alba-Mejía,Jhonny Edison Losak,Tomas
author_facet	von Bennewirz,Eduardo Cazanga-Solar,Rodrigo Carrasco-Benavides,Marcos Fredes,Claudio Alba-Mejía,Jhonny Edison Losak,Tomas
author_sort	von Bennewirz,Eduardo
title	VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZER
title_short	VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZER
title_full	VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZER
title_fullStr	VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZER
title_full_unstemmed	VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZER
title_sort	vegetative and productive responses of organic apple (malus domestica l.) to fossilized red guano and a controlled-release fertilizer
publisher	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902017000300213
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VEGETATIVE AND PRODUCTIVE RESPONSES OF ORGANIC APPLE (Malus domestica L.) TO FOSSILIZED RED GUANO AND A CONTROLLED-RELEASE FERTILIZER

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