VKB Agriculture is a major agri-business in Free State, offering grain, retail, insurance & finance. Email: info@vkb.co.za. VKB Agriculture is one of the largest agricultural enterprises in South Africa, headquartered in Reitz, Free State. Established over a century ago, VKB operates in the grain, financial services, insurance, mechanisation, input supply, and retail sectors. It serves producers across Free State and Limpopo through co-operative and commercial business models.