PRODUTIVIDADE DE SOJA E MILHO SOB MANEJOS DE SEGUNDA SAFRA

• Palavras-chave: biocarvão; plantas de cobertura; sistemas conservacionistas

• Keywords: biochar; cover plants; conservation systems.

• Abstract: Brazilian agriculture, focusing on soybean and corn crops, faces the challenge of maintaining high yields while seeking sustainability. Intercropping systems in the second harvest, in which different crops are sown simultaneously, emerge as strategies to intensify the usage of agricultural areas. This study aimed to compare soybean and corn yields in single and intercropped systems, with the hypothesis that intercropping can result in yields equal or higher than the conventional system. The experiment was conducted in the experimental area of the Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, Campus Campo Novo do Parecis, using a Latossolo Vermelho Distrófico típico with clay texture. The statistical design adopted was a randomized block with nine treatments, involving different management combinations, such as corn, intercropped with Crotalaria spectabilis and Urochloa ruziziensis, in addition to organic fertilization and biochar. Although no significant differences were observed in soybean and corn yields between the treatments, the study pointed out that areas with greater vegetation cover had better moisture retention and lower soil temperature, important factors in water stress conditions. These preliminary results suggested that covering and managing the soil could be beneficial in agronomic terms, but long-term studies are needed to confirm this trend.