DuPont Pioneer has laid off an undisclosed number of workers in Johnston, the Des Moines Register reported. DuPont spokesman Gregg Schmidt said the company cut jobs to “integrate our operations and establish a streamlined, efficient, built-for-purpose organization.” DuPont and Dow Chemical closed their $150 billion merger in the fall, with plans of creating several smaller companies, including a new stand-alone ag company. Iowa lost its bid to base the company’s new ag firm in the state; the company received $17 million in state incentives last year to keep roughly 2,600 jobs in Johnston. The company said it remains committed to each of its three locations. “We expect to have a major, vibrant presence and equal or higher level of employment in Johnston over time as we build a global agriculture leader,” Schmidt said.