Response of cowpea to water levels and phosphate fertilizer on the savanna of Roraima

Authors

  • Gabriela Oliveira Universidade Federal de Roraima
    • Wellington Araújo Universidade Federal de Roraima
      • Pablo Cruz Universidade Federal de Roraima
        • Washington Lima Universidade Federal de Roraima
          • Gilvan Ferreira Embrapa Roraima

            Keywords:

            Vigna unguiculata, Irrigation management, Amazônia

            Abstract

            This work was carried out to evaluate the effect of irrigation depth and phosphate fertilizer (0; 70; 140; 210 kg ha-1 de P2O5) on yield and production components of cowpea (Vigna unguiculata L. Walp) cv. Novaera at the Savanna of Roraima, Brazil. The experimental design was arranged in a completely randomized block in split-plot and four replications. Irrigation depths were applied through a sprinkler line source system. The principal treatments constituted on the depths of irrigation and the secondary treatments by the phosphate fertilizer. Significant effects (p < 0.05) of the depth of irrigation and phosphate fertilizer interaction with aerial mass production and mass of 100 grains were observed. The number of grains per pods and size of pod were affected by the phosphate fertilizer only. The highest economical yield (1.306 kg ha-1) was obtained by 89.45 kg of  P2O5.

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            Published

            2011-07-05

            Issue

            Vol. 42 No. 4 (2011)

            Section

            Agricultural Engineering

            License

            Atribuição
            CC BY

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            How to Cite

            OLIVEIRA, Gabriela; ARAÚJO, Wellington; CRUZ, Pablo; LIMA, Washington; FERREIRA, Gilvan. Response of cowpea to water levels and phosphate fertilizer on the savanna of Roraima. Revista Ciência Agronômica, [S. l.], v. 42, n. 4, 2011. Disponível em: https://periodicos.ufc.br/revistacienciaagronomica/article/view/84185. Acesso em: 2 may. 2026.