Rafael Santiago da Costa, Leticia Kenia Bessa de Oliveira, Aiala Vieira Amorim,
Ana Isabe Pinheiro, Marcio de Oliveira Martins
The biofertilizer has been used to reduce the effects of salinity on plants. In this context the present work had as objective to evaluate the accumulation of phytomass of plants of cowpea (Vigna unguiculata) grown under different levels of salinity and biofertilizers. The experiment was conducted in a greenhouse at the experimental farm of the University of International Integration Lusophone Afro-Brazilian, with duration of 70 days. The experimental design utilized was completely randomized in 3 x 4 factorial arrangements, with three water salinity levels of irrigation and four levels of biofertilizer, with five repetitions. Were evaluated the efficiency of water use, dry mass of the aerial part, of the root, and the reason between them. It was observed that the application of biofertilizer significantly influenced the accumulation of phytomass in the evaluated variables. The variables dry mass of the aerial part, from root, and the ratio between them, presented better results when the plants were biofertilized with doses higher than 1600 mL, in all salinity levels of the irrigation water. The application of doses between 1600 and 2400 mL of biofertilizer is efficient for the phytomass accumulation of cowpea for all irrigation water salinity levels. Then, the biofertilizer presents itself as a sustainable alternative, with great potential for use in agriculture.