SEEDING AFRICA: After a nearly three-year battle with South African regulators, DuPont Co. said Wednesday that its Des Moines, Iowa subsidiary Pioneer has completed the purchase of an 80 percent majority stake in South Africa's Pannar Seed.

SEEDING AFRICA: After a nearly three-year battle with South African regulators, DuPont Co. said Wednesday that its Des Moines, Iowa subsidiary Pioneer has completed the purchase of an 80 percent majority stake in South Africa's Pannar Seed.

GLOBAL EXPANSION: The deal greatly expands the chemical and seed company's access to new markets, and will help it boost research efforts and seed availability for farmers in Africa. Africa marks a major growth opportunity for seed companies because of the global scramble to grow enough crops to meet growing demand for food and biofuels.

WINNING THE BATTLE: It hasn't been an easy path for DuPont. The company first announced the purchase in September 2010, in an effort to help Pioneer better compete with Monsanto to win a bigger share in the global market for genetically engineered crops. But the South African Competition Tribunal blocked the deal. In May 2012, an appeals court overturned that decision and gave DuPont regulatory clearance.