Farmers already contend with concentrated retail markets in the form of Woolworths and Coles, and plans for Elders to acquire agribusiness competitor Delta Ag have some worried history could be repeating. Farmers already contend with concentrated retail markets in the form of Woolworths and Coles, and plans for Elders to acquire agribusiness competitor Delta Ag have some worried history could be repeating. Agribusiness, Agricultural Chemicals, Agricultural Marketing, Takeovers Latest business news