Many other species native to Nigeria, including soybean and its varieties, serve as an important source of oil and protein in this region. There are also many plants with medicinal purposes that are used to aid the therapy in many organs. Some of these vegetations include ''Euphorbiaceae'', which serve the purpose of aiding malaria, gastrointestinal disorders respectively and many other infections. Different stress factors such as droughts, low soil nutrients and susceptibility to pests have contributed to Maize plantations being an integral part of agriculture in this region.