Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics

The management of weathered tropical soils, with low availability of phosphorus and the presence of a dry season in winter, is a challenge to favor the levels of organic matter and improve the efficiency of phosphate fertilization. Intercropping maize second crop with cover crops has improved soil q...

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Detalles Bibliográficos
Autor: Vilela, Rafael Gonçalves [UNESP]
Tipo de recurso: tesis doctoral
Estado:Versión publicada
Fecha de publicación:2023
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/250436
Acceso en línea:http://hdl.handle.net/11449/250436
Access Level:acceso abierto
Palabra clave:resíduos vegetais
silicato
braquiária
milho
fósforo orgânico do solo
soil organic phosphorus
crop straw inputs
silicate
ruzigrass
maize
id BR_12afcc0faee5c8e5befe7059eaebf9f6
oai_identifier_str oai:repositorio.unesp.br:11449/250436
network_acronym_str BR
network_name_str Brasil
repository_id_str
dc.title.none.fl_str_mv Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics
Sistemas de culturas intercalares e corretivos do solo em regime de plantio direto de longa duração na dinâmica do fósforo
title Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics
spellingShingle Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics
Vilela, Rafael Gonçalves [UNESP]
resíduos vegetais
silicato
braquiária
milho
fósforo orgânico do solo
soil organic phosphorus
crop straw inputs
silicate
ruzigrass
maize
title_short Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics
title_full Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics
title_fullStr Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics
title_full_unstemmed Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics
title_sort Intercropping systems and soil amendments under long-term no-till on phosphorus dynamics
dc.creator.none.fl_str_mv Vilela, Rafael Gonçalves [UNESP]
author Vilela, Rafael Gonçalves [UNESP]
author_facet Vilela, Rafael Gonçalves [UNESP]
author_role author
dc.contributor.none.fl_str_mv Crusciol, Carlos Alexandre Costa
Universidade Estadual Paulista (Unesp)
dc.subject.por.fl_str_mv resíduos vegetais
silicato
braquiária
milho
fósforo orgânico do solo
soil organic phosphorus
crop straw inputs
silicate
ruzigrass
maize
topic resíduos vegetais
silicato
braquiária
milho
fósforo orgânico do solo
soil organic phosphorus
crop straw inputs
silicate
ruzigrass
maize
description The management of weathered tropical soils, with low availability of phosphorus and the presence of a dry season in winter, is a challenge to favor the levels of organic matter and improve the efficiency of phosphate fertilization. Intercropping maize second crop with cover crops has improved soil quality, enhancing the input of straw in the production system, favoring nutrient cycling and efficient use of natural resources by commercial crops, increasing productivity. The effects of intercropping systems on off-season (autumn-winter) cropping and changes in soil acidity on soil P dynamics were evaluated in a randomized block experiment in split plots. The single or intercropped maize cultivation system with signal grass + sunn hemp were considered as the main plots, and the acidity correction through silicate, limestone or without correction were treated as subdivided plots. Soy is grown as a main crop in the summer seasons. The intercropping of maize in the off-season increases the yield of maize and soybeans by approximately 30 and 9%, respectively. The greater input of plant residues through intercropping temporarily reduces the lability of Po and Pi in the soil at 0-0.05 m depth, but does not limit P uptake by crops. Liming, regardless of the corrective used, increases the pool of Pi in the soil, specifically for labile forms due to the release of P linked to Al and Fe. Intercropping maize second crop with Brachiára and Sunn hemp is a good option for plant diversification in the area, increasing land use efficiency and SP sustainability in tropical agriculture, providing higher yields compared to the monoculture system.
publishDate 2023
dc.date.none.fl_str_mv 2023-08-24T11:53:08Z
2023-08-24T11:53:08Z
2023-06-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/11449/250436
33004064039P3
url http://hdl.handle.net/11449/250436
identifier_str_mv 33004064039P3
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.source.none.fl_str_mv reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
_version_ 1853671541208776704
spelling Intercropping systems and soil amendments under long-term no-till on phosphorus dynamicsSistemas de culturas intercalares e corretivos do solo em regime de plantio direto de longa duração na dinâmica do fósfororesíduos vegetaissilicatobraquiáriamilhofósforo orgânico do solosoil organic phosphoruscrop straw inputssilicateruzigrassmaizeThe management of weathered tropical soils, with low availability of phosphorus and the presence of a dry season in winter, is a challenge to favor the levels of organic matter and improve the efficiency of phosphate fertilization. Intercropping maize second crop with cover crops has improved soil quality, enhancing the input of straw in the production system, favoring nutrient cycling and efficient use of natural resources by commercial crops, increasing productivity. The effects of intercropping systems on off-season (autumn-winter) cropping and changes in soil acidity on soil P dynamics were evaluated in a randomized block experiment in split plots. The single or intercropped maize cultivation system with signal grass + sunn hemp were considered as the main plots, and the acidity correction through silicate, limestone or without correction were treated as subdivided plots. Soy is grown as a main crop in the summer seasons. The intercropping of maize in the off-season increases the yield of maize and soybeans by approximately 30 and 9%, respectively. The greater input of plant residues through intercropping temporarily reduces the lability of Po and Pi in the soil at 0-0.05 m depth, but does not limit P uptake by crops. Liming, regardless of the corrective used, increases the pool of Pi in the soil, specifically for labile forms due to the release of P linked to Al and Fe. Intercropping maize second crop with Brachiára and Sunn hemp is a good option for plant diversification in the area, increasing land use efficiency and SP sustainability in tropical agriculture, providing higher yields compared to the monoculture system.O manejo de solos tropicais intemperizados, com baixa disponibilidade de fósforo e presença de uma estação seca no inverno, é um desafio para favorecer os índices de matéria orgânica e melhorar a eficiência das adubações fosfatadas. O consórcio do milho segunda safra com plantas de cobertura tem melhorado a qualidade dos solos, potencializando o aporte de palhada no sistema de produção, favorecendo a ciclagem de nutrientes e eficiência no uso dos recursos naturais pelas culturas comerciais, aumentando a produtividade. Os efeitos de sistemas de cultivo consorciados na cultura de entressafra (outono-inverno) e as alterações da acidez do solo sobre a dinâmica de P no solo foram avaliadas em um experimento de blocos ao acaso em parcelas subdivididas. Sendo o sistema de cultivo milho solteiro ou consorciado com capim braquiária + crotalária considerados como as parcelas principais, e a correção de acidez através do silicato, calcário ou sem correção foram tratados como parcelas subdivididas. A soja é cultivada como cultura principal nas estações de verão. O cultivo consorciado de milho na entressafra aumenta em cerca de 30 e 9% o rendimento das culturas de milho e soja respectivamente. O maior aporte de resíduos vegetais através da consorciação reduz temporariamente a labilidade de Po e Pi do solo a 0-0,05 m de profundidade, más não limita a absorção de P pelas culturas. A calagem independente do corretivo utilizado, aumenta o pool de Pi do solo, especificamente para formas lábeis em decorrência a liberação de P ligado a Al e Fe. O consórcio de milho segunda safra com braquiára e crotalária é uma boa opção para diversificação de plantas na área, aumentando a eficiência do uso da terra e a sustentabilidade do SP na agricultura tropical, proporcionando maiores produtividades em comparação com o sistema monocultivo.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Estadual Paulista (Unesp)Crusciol, Carlos Alexandre CostaUniversidade Estadual Paulista (Unesp)2023-08-24T11:53:08Z2023-08-24T11:53:08Z2023-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfapplication/pdfhttp://hdl.handle.net/11449/25043633004064039P3enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPVilela, Rafael Gonçalves [UNESP]2025-08-29T05:13:42Zoai:repositorio.unesp.br:11449/250436Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-08-29T05:13:42Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
score 15,812429

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