Efeito da água residuária e adubação fosfatada em pigmentos fotossintéticos e macronutrientes de Moringa oleífera Lam.

Armando Rodrigues de Melo; Patrícia Ferreira da Silva; José Dantas Neto; Francisco de Assis da Silva; Djailson Silva da Costa Júnior; Aldrin Matin Pérez-Marin

doi:10.53661/1806-9088202549263869

Authors

Armando Rodrigues de Melo Universidade Federal de Campina Grande, Programa de Pós-Graduação em Engenharia e Gestão de Recursos Naturais, Campina Grande, PB, Brasil https://orcid.org/0000-0002-7952-7264
Patrícia Ferreira da Silva Universidade Federal de Rondonópolis, Instituto de Ciências Agrárias e Tecnológicas, Rondonópolis, MT, Brasil https://orcid.org/0000-0002-4580-2336
José Dantas Neto Universidade Federal de Campina Grande, Unidade Acadêmica de Engenharia Agrícola, Campina Grande, PB, Brasil https://orcid.org/0000-0003-0798-6717
Francisco de Assis da Silva Universidade Federal de Campina Grande, Doutorado em Engenharia Agrícola, Campina Grande, PB, Brasil https://orcid.org/0000-0003-4558-1147
Djailson Silva da Costa Júnior Universidade Federal do Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, PI, Brasil https://orcid.org/0000-0002-9513-4268
Aldrin Matin Pérez-Marin Instituto Nacional do Semiárido, Campina Grande, PB, Brasil https://orcid.org/0000-0001-9855-3284

DOI:

https://doi.org/10.53661/1806-9088202549263869

Keywords:

Irrigation efficiency, Water reuse, Fertigation, Chlorophylls, Sustainability

Abstract

The use of unconventional resources, such as treated domestic wastewater, has proven to be a promising alternative for agricultural irrigation in semi-arid regions, contributing to water sustainability. This study evaluated the effects of fertigation with wastewater and phosphate fertilization on photosynthetic pigments (chlorophyll A, chlorophyll B and carotenoids) and the concentration of macronutrients (N, P and K) in leaves of Moringa oleifera Lam. The experiment was conducted in a greenhouse at the Professor Ignácio Salcedo Experimental Station of the National Institute of Semiarid (INSA), in Campina Grande-PB, in a haplic PLANOSOL soil. The experimental design was in randomized blocks, with a 5 x 2 factorial scheme (five concentrations of wastewater and two levels of phosphate fertilization), totaling 10 treatments. Irrigation was performed manually, and the drained volume was collected to calculate evapotranspiration. At 90 days, the levels of chlorophyll A, B and carotenoids did not differ significantly between the treatments with wastewater, but phosphate fertilization increased the levels of N and P in the plant. Wastewater, applied at up to 75%, increased the N level and, at 100%, increased P and K. It is concluded that wastewater, with adequate management, is viable for Moringa cultivation, but caution is required due to possible chemical interactions and content proportions in the soil.

Keywords: Irrigation efficiency; Water reuse; Fertigation; Chlorophylls; Sustainability