Irrigation with saline water and use of bovine biofertilizer in the growth and gas exchange of cowpea

• Autor(a) principal: Magalhães, Clarissa Lima
• Data de Publicação: 2021
• Outros Autores: Sousa, Geocleber Gomes de, Barbosa, Andreza Silva, Ribeiro, Rute Maria Rocha, Santos, Max Ferreira dos, Cruz Filho, Elizeu Matos da
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Verde de Agroecologia e Desenvolvimento Sustentavel
• Texto Completo: https://www.gvaa.com.br/revista/index.php/RVADS/article/view/7670
• topic: Input organic; Salinity; Vigna unguiculata (L.) Walp; Insumos orgânicos; Salinidad; Vigna unguiculata (L.) Walp; Insumo orgânico; Salinidade; Vigna unguiculata (L.) Walp

The biofertilizer can mitigate the effect of salt stress on the initial growth and on the physiology of cowpea (Vigna unguiculata). The objective of this work was to evaluate the effect of bovine biofertilizer on initial growth and gas exchange of cowpea plants irrigated with saline water. The experiment was conducted in a field condition in the Didactic garden on the Liberdade campus of the University of International Integration of Afro-Brazilian Lusophony (UNILAB), Redenção, Ceará. In the experiment, the cultivar “BRS Tumucumaque” was used, sown in 8-liter plastic pots, in a randomized block design in a 5x2 factorial scheme, with four replications, the first consisting of five concentrations of biofertilizers (5, 10, 15, 20 and 25% of the pot volume and the second factor composed by the electrical conductivity of the irrigation water (CEa: 0.5 and 5.0 dS m-1) .The leaf area, number of leaves, stem diameter, height of the plant, stomata, conductance, photosynthesis rate and transpiration were evaluated. Saline stress reduced plant height, transpiration and photosynthesis. The 15% concentration of bovine biofertilizer was the most efficient to mitigate the use of high water salinity for the number of leaves, stem diameter, leaf area and stomatal conductance.