Variabilidade espacial da resistência à penetração do solo em área de capineira irrigada no semiárido

Autores

  • Marcos Sales Rodrigues Universidade Federal do Vale do São Francisco
  • Ricardo R. D. Ramos
  • Tomas P. de Azevedo
  • Antonio P. Patrocinio Filho
  • Lineker G. de Oliveira

DOI:

https://doi.org/10.30969/acsa.v10i1.495

Palavras-chave:

Agronomia

Resumo

As restrições climáticas do semiárido nordestino para a produção animal é suprida por meio do fornecimento de alimentos através de capineiras irrigadas. Contudo, as constantes colheitas mecanizadas podem modificar as propriedades físicas e dinâmicas do solo, aumentando a compactação do solo. Portanto, objetivou-se neste trabalho avaliar o padrão de distribuição espacial da resistência mecânica do solo à penetração (RP) em área de capineira irrigada no semiárido nordestino. O experimento foi conduzido em uma capineira cultivada com capim-elefante em Petrolina-PE sob um Argissolo. A RP foi obtida com um penetrômetro de impacto IAA/Planalsucar Stolf nas camadas de 0–10, 10–20, 20–30 e 30–40 m seguindo uma grade amostra de 60 pontos com espaçamento equidistante de 10 m entre pontos. Os dados foram submetidos a análise de estatística descritiva e geoestatística. A RP do solo apresentou dependência espacial em todas as camadas avaliadas, com valores acima do limite para solos arenosos, indicando necessidade de intervenção e remoção da camada compactada. Houve incremento da RP com o aumento da profundidade, atingindo níveis máximos principalmente entre 20 e 30 cm de profundidade. Os métodos geoestatísticos permitiram o zoneamento da área definindo regiões específicas com maiores níveis de compactação (RP).

Biografia do Autor

  • Marcos Sales Rodrigues, Universidade Federal do Vale do São Francisco
    Possui graduação em Agronomia pela Universidade Estadual de Goiás (2007) e graduação em Tecnologia em Sistemas de Informação pelo Centro Federal de Educação Tecnológica de Urutaí-GO (2005), atual Instituto Federal Goiano, Campus de Urutaí. Possui o título de Mestre em Agronomia (Ciência do Solo) (2010) pela Faculdade de Ciências Agrárias e Veterinárias, UNESP, Campus de Jaboticabal-SP e doutorado em Agronomia (Produção Vegetal) (2013) também pela FCAV/UNESP, Jaboticabal-SP. Realizou doutorado sanduíche na University of Kentucky, Kentucky, Lexington, EUA. Atualmente é professor adjunto da Universidade Federal do Vale do São Francisco, Campus Ciências Agrárias, Petrolina, PE. As principais áreas de atuação são: Agricultura de Precisão, Geoestatística, variabilidade espacial de atributos do solo e da produtividade das culturas, modelos espaciais para estimação da produtividade, sensores de estimação de atributos do solo e planta e geoprocessamento.

Referências

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Publicado

2014-07-22

Edição

v. 10 n. 1 (2014)

Seção

Original Articles / Artigos de Pesquisa

Licença

Termo de cessão de direitos autorais da Revista Agropecuária Científica no Semiárido:

Esta é uma revista de acesso livre, onde, utiliza o termo de cessão seguindo a lei nº 9.610/1998, que altera, atualiza e consolida a legislação sobre direitos autorais no Brasil.

Autores que publicam na Revista Agropecuária Científica no Semiárido(ACSA) concordam com os seguintes termos:O(s) autor(es) doravante designado(s) CEDENTE, por meio desta, cede e transfere, de forma gratuita, a propriedade dos direitos autorais relativos à OBRA à Revista Agropecuária Científica no Semiárido(ACSA), representada pelo CSTR/UFCG, estabelecida no Campus de Patos-PB doravante designada CESSIONÁRIA, nas condições descritas a seguir:

O CEDENTE declara que é (são) autor(es) e titular(es) da propriedade dos direitos autorais da OBRA submetida;

O CEDENTE declara que a OBRA não infringe direitos autorais e/ou outros direitos de propriedade de terceiros, que a divulgação de imagens (caso as mesmas existam) foi autorizada e que assume integral responsabilidade moral e/ou patrimonial, pelo seu conteúdo, perante terceiros;

O CEDENTE cede e transfere todos os direitos autorais relativos à OBRA à CESSIONÁRIA, especialmente os direitos de edição, de publicação, de tradução para outro idioma e de reprodução por qualquer processo ou técnica através da assinatura deste termo impresso que deverá ser submetido via correios ao endereço informado no início deste documento;

A CESSIONÁRIA passa a ser proprietária exclusiva dos direitos referentes à OBRA, sendo vedada qualquer reprodução, total ou parcial, em qualquer outro meio de divulgação, impresso ou eletrônico, sem que haja prévia autorização escrita por parte da CESSIONÁRIA.