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Effects of decreasing levels of n amendments on organic "granny smith" apple trees

Authordc.contributor.authorvon Bennewitz, E. 
Authordc.contributor.authorCooper Cortés, Tomás 
Authordc.contributor.authorLosak, T. 
Authordc.contributor.authorHlusek, J. 
Authordc.contributor.authorCarrasco Benavides, M. 
Admission datedc.date.accessioned2016-05-27T14:49:09Z
Available datedc.date.available2016-05-27T14:49:09Z
Publication datedc.date.issued2015
Cita de ítemdc.identifier.citationJournal of Soil Science and Plant Nutrition, 2015, 15 (4), 979-990en_US
Identifierdc.identifier.issn0718-9516
Identifierdc.identifier.urihttp://repositorio.uchile.cl/handle/2250/138534
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractThe effect of decreasing levels of organic N-fertilization on fruit production, mineral composition and fruit quality was evaluated in organically cultivated "Granny Smith" apples trees. Treatments included the application of decreasing levels of N fertilization (100 kg N ha(-1), 75 kg N ha(-1), 50 kg N ha(-1) and 0 kg N ha(-1)) applied as fossilized red guano (50% of the total amount of N) and blood meal (50% of the total amount of N) to twelve years old Granny Smith apple trees. Yield was not affected by the treatments (yield ranged from 0.28 to 0.4 kg cm(-2) SCSA). Fruit mineral concentration and ratios were not affected by treatments. Fruits showed low Ca concentrations (2.8 to 3.3 mg Ca 100 g(-1) FW), high levels of K (118.6 to 130.1 mg K 100 g(-1) FW) and high values for K+Mg/Ca (> 12) and K/Ca (> 30) ratios. Mineral concentration on leaves was not affected by treatments (normal concentrations for macro and microelements). Bitter pit was only detected after 60 days of storage (100 kg N ha(-1) tree, 1.1 in a scale 1-4). Besides orchard nitrogen management, fruit mineral ratios and Ca foliar applications should be considered for managing fruit production and quality in organic apples.en_US
Lenguagedc.language.isoenen_US
Publisherdc.publisherSoc Chilena Ciencia Sueloen_US
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectMalus domesticaen_US
Keywordsdc.subjectPhysiological disordersen_US
Keywordsdc.subjectVolcanic soilsen_US
Keywordsdc.subjectCaen_US
Keywordsdc.subjectMgen_US
Keywordsdc.subjectKen_US
Títulodc.titleEffects of decreasing levels of n amendments on organic "granny smith" apple treesen_US
Document typedc.typeArtículo de revistaen_US


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Atribución-NoComercial-SinDerivadas 3.0 Chile
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 Chile