The Iowa Economic Development Authority board this morning approved $3.6 million in tax incentives to DuPont Pioneer for a nearly $50 million multiphase expansion of the company's fast-growing Johnston campus.

The company will receive $3.1 million in research activity tax credits and a rebate of an estimated $500,000 in sales and use taxes paid on construction costs. The expansion includes adding 26,500 square feet to the Mendel Controlled Growth Environment building, as well as new technology and equipment for research and development to the existing Insectary. The company also plans to add conference and classroom space to accommodate increasing demand for research-and-development training. The project also includes plans for a 20,000-square foot research and educational training center for seed treatment technologies

“These projects have a 2014 to 2015 timeline,” said Amanda Rinehart, the company’s Iowa communications manager. With several facilities expansions in the past several years, DuPont Pioneer now has about 2,800 employees in Greater Des Moines, she said, not counting the additional 105 jobs that will be created with the newest expansion.

In June DuPont Pioneer opened its newest facility, the Johnston Innovation Center. Construction is still under way on the Beaver Creek II laboratory expansion on the campus.