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Growth Rate of Eggplant Under Nitrogen and Phosphate Fertilization and Irrigated With Wastewater

Author

Listed:
  • Sebastião de Oliveira Maia Júnior
  • Aldair de Souza Medeiros
  • Thiago Cândido dos Santos
  • Mariana de Oliveira Pereira
  • Renato Américo de Araújo Neto
  • Giordano Bruno Medeiros Gonzaga
  • Manoel Moisés Ferreira de Queiroz
  • Reginaldo Gomes Nobre
  • Rener Luciano de Souza Ferraz
  • Ivomberg Dourado Magalhães
  • Patrícia da Silva Costa

Abstract

Wastewater use has become an alternative for agriculture in arid and semi-arid areas due to water scarcity besides providing nutrient for plants. This work aimed to evaluate the effects of the interaction of nitrogen and phosphorus doses associated with wastewater on the growth rate of eggplants in the stages of vegetative growth and beginning of fruiting in the semi-arid of Brazil. The wastewater was previously treated using sand filter with intermittent flow. The experiment consisted of a randomized block design in a 4 × 4 + 1 factorial scheme, with four replications. The factors consisted of four nitrogen doses (N1 = 0.22, N2 = 0.39, N3 = 0.56 and N4 = 0.72 g dm-3 of soil), four doses of phosphorus (P1 = 0, P2 = 1.68, P3 = 2.40 and P4 = 3.12 g dm-3 of soil), both using wastewater, and a control treatment (100% nitrogen and phosphorus using drinking water). The interaction of wastewater with nitrogen and phosphorus doses influenced all growth rates at the vegetative stage, except for the relative number of leaves. We found interaction for the relative rates of stem diameter and number and area of leaves at the beginning of the fruiting stage. Nitrogen and phosphorus doses associated with wastewater were excessive even below the recommendation for eggplant cultivation, however, in the absence of wastewater the plants reduce the growth rates of stem diameter and leaf area in the initial period of the fruiting.

Suggested Citation

  • Sebastião de Oliveira Maia Júnior & Aldair de Souza Medeiros & Thiago Cândido dos Santos & Mariana de Oliveira Pereira & Renato Américo de Araújo Neto & Giordano Bruno Medeiros Gonzaga & Manoel M, 2024. "Growth Rate of Eggplant Under Nitrogen and Phosphate Fertilization and Irrigated With Wastewater," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 11(4), pages 476-476, April.
  • Handle: RePEc:ibn:jasjnl:v:11:y:2024:i:4:p:476
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    References listed on IDEAS

    as
    1. Guilherme Furtado & Lúcia Chaves, 2018. "Growth Rates and Sunflower Production in Function of Fertilization with Biochar and NPK," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 10(2), pages 260-260, January.
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    More about this item

    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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