EFICIÊNCIA AGRONÔMICA DA CULTURA DA SOJA SOB MANEJOS BIOLÓGICOS EM ÁREAS QUEIMADAS E NÃO QUEIMADAS

Abstract

Soybean (Glycine max L.) is one of the main agricultural crops worldwide, playing a fundamental role in both the economy and food supply. However, due to the dry season in the Brazilian Cerrado, the straw left from the off-season crop, commonly used as soil cover for soybean cultivation, becomes susceptible to accidental fires, which can be harmful to soil quality and, consequently, to crop performance. In this context, biological products emerge as a sustainable alternative to promote plant growth, improve soil fertility, and mitigate the negative impacts caused by fires. The present study aimed to evaluate the effects of biological product application on the agronomic performance of soybean cultivated in burned and unburned areas. Field experiments were carried out considering different biological management practices and assessing parameters such as plant height, root length, shoot fresh mass, number of nodules, plant stand, total number of pods, thousand-grain weight, and final yield. The results indicated that the biological products applied in some treatments positively contributed to soybean development, most often showing greater efficiency in non-burned areas, where soil conditions may have favored microbial activity. Statistically, no significant differences were observed in yield among all treatments; however, the treatment corresponding to the farm’s standard management presented an expressive difference. Considering that this biological management has been adopted on the farm for a long time, it is concluded that this practice is promising for enhancing soybean agronomic performance, contributing to a more sustainable and productive agriculture.