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Bioscience Journal
Article . 2014
Data sources: DOAJ
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Qualidade física de um latossolo vermelho sob sistema de semeadura direta e cultivo convencional

Authors: de Almeida, Cinara Xavier; Jorge, Ricardo Falqueto; Centurion, José Frederico; Borges, Elias Nascentes; Rossetti, Karina de Vares; Pereira, Fabiana de Souza;

Qualidade física de um latossolo vermelho sob sistema de semeadura direta e cultivo convencional

Abstract

Para garantir a sustentabilidade dos sistemas agrícolas, a compreensão e a quantificação do impacto do uso e manejo do solo na sua qualidade física são de fundamental importância. Nesse sentido, objetivou-se com este trabalho avaliar a qualidade de um Latossolo Vermelho sob cultivo convencional (CC) e sistema de semeadura direta (PD), por meio de diferentes indicadores físicos. Os sistemas de uso e manejo do solo foram: CC e PD por sete e oito anos consecutivos (solo de textura média) e CC e PD por nove e dez anos consecutivos (solo de textura argilosa). Foram determinadas, nas camadas de 0-0,10; 0,10-0,20 e 0,20-0,30 m, a resistência do solo à penetração, a porosidade total, a macroporosidade e a microporosidade, a retenção de água no solo, o índice S, a densidade, a densidade do solo máxima e também a densidade do solo relativa. Foi verificada grande variação da resistência do solo à penetração ao longo do ciclo das culturas da soja e do milho, sendo que seus maiores valores foram constatados nas camadas superficiais. Dentre os sistemas de manejo, o PD apresentou maior resistência do solo à penetração. Dentre os sistemas de manejo, o CC apresentou melhores resultados em relação aos indicadores de qualidade física do solo.

Country
Brazil
Keywords

Resistência do solo à penetração, Agricultural Sciences, S, QH301-705.5, Agriculture, Soil water retention, Índice S, S index, Porosidade, Soil bulk density, Soil resistance to penetration, Densidade do solo, Biology (General), Porosity, Retenção de água no solo

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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gold