2025-12-162025-12-162025-07-08https://repositorio.ifal.edu.br/handle/123456789/1361Discarding and composting are the main alternatives that have been adopted for by products of fruit pulp production. However, leachate, a liquid residue rich in minerals and organic substances, generated in the decomposition process of organic matter, is discarded. It is possible to produce liquid biofertilizer from leachate with economic potential for generating employment and income. Therefore, this research aimed to evaluate the chemical composition of leachate from soursop residue and the effect of different concentrations on the production components of green corn. The study was carried out in two phases: 1) production of biofertilizer from composting and evaluation of the chemical composition; 2) evaluation of four concentrations of biofertilizer (0% - control, 5, 10, 15 and 20% of biofertilizer diluted in water), at field level, on green corn, in a randomized block design, with four replications. The chemical composition of soursop leachate showed high magnitude values for macro (N, P, K, Ca, Mg) and micronutrients (Mn, Cu, Fe, Zn), total organic matter (44,154 mg/L), total organic carbon (4,191.7 mg/L) and humic (10.77 mg/L) and fulvic acids (1,054.4 mg/L). When applied to corn crops, there was no effect (p>0.05) of the concentrations on the production components and chlorophyll content. The average height of the plants was less than 1.0 m and the early flowering (60 days after planting) may indicate the lack of adaptation of the cultivar to the research site, influencing the treatments applied.ptZea maysCompostagemBioinsumoComponentes de produçãoCompostingBioinputProduction componentsDissertaçãoOUTROS