A study conducted by a team of researchers at Embrapa Meio Ambiente, Unasp, Esalq, and UFSCar in Brazil, published the findings that using ground cover in intercropped vegetable beds can significantly reduce the number of weeds in both agroforestry and full sun systems. The research, conducted at Embrapa Meio Ambiente's Sítio Agroecológico in Jaguariúna, SP, found that the use of mulch, such as shredded waste from urban areas, can help control spontaneous weeds, optimize labor use, retain soil moisture, and reduce labor costs for weeding. The study also noted that the diversity of spontaneous species was higher in plots with bare soil compared to covered soils, indicating that the use of mulch can help decrease weed numbers. The treatments without ground cover showed a notable difference in the number of weeds between the agroforestry system and full sun, with no significant variation in weed numbers between the two types of cultivation, inside and outside the agroforestry system.