Manejo de águas salinas e adubação nitrogenada no cultivo da mamoneira em área do semiárido Paraibano

Authors

  • Saulo Soares da Silva UFCG
  • Lauriane Almeida dos Anjos Soares
  • Geovani Soares de Lima UFCG
  • Reginaldo Gomes Nobre UFCG
  • Hans Raj Gheyi

DOI:

https://doi.org/10.30969/acsa.v9i2.410

Abstract

Este trabalho foi desenvolvido com o objetivo de avaliar o crescimento e a floração da mamoneira irrigada com distintos níveis de salinidade da água e doses de nitrogênio. A pesquisa foi conduzida em lisímetros de drenagem sob condições de campo em área experimental do Centro de Ciências e Tecnologia Agroalimentar da Universidade Federal de Campina Grande, Pombal - PB, entre setembro de 2011 e janeiro de 2012. Adotou-se o delineamento estatístico em blocos casualizados, em esquema fatorial 5x4 com três repetições, cujos tratamentos foram constituídos pela combinação de cinco níveis de condutividade elétrica da água de irrigação- CEa (0,3; 1,2; 2,1; 3,0 e 3,9 dS m-1) associados a quatro doses de adubação nitrogenada (70; 100; 130 e 160% da recomendação para ensaios). Avaliaram-se aos 40 dias após o semeadura (DAS), a altura de planta (AP), o diâmetro de caule (DC), a área foliar (AF), a percentagem de flores masculinas (%FM) e femininas (%FM) e o comprimento do racemo primário (CRPri). O incremento da salinidade da água de irrigação proporcionou efeito negativo sobre as variáveis de crescimento da BRS Energia; O aumento do nível salino da água de irrigação provocou alterações no florescimento da mamoneira; A aplicação das doses de nitrogênio resultou em incremento no diâmetro caulinar, área foliar e percentagem de flores de femininas, até a dosagem de 100, 119 e 104%, respectivamente. A mamoneira respondeu a interação entre os fatores para percentagem de flores femininas e comprimento efetivo do racemo primário.

Author Biography

  • Lauriane Almeida dos Anjos Soares
    UFCG

References

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Published

2013-10-26

Issue

Vol. 9 No. 2 (2013)

Section

Original Articles / Artigos de Pesquisa

License

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.