Researchers discovered that oil extracted from leaves of a Brazilian plant called Xylopia frutescens effectively kills the fungus that causes rice sheath blight, a serious disease that can destroy rice crops. The oil contains two main compounds that work against the fungus and can be applied before or after infection to prevent or treat the disease. Importantly, the oil doesn’t harm beneficial fungi like Trichoderma asperellum that farmers use as natural pest control, making it an environmentally friendly alternative to chemical fungicides.