Fig. 1. Daily pollen production at two sites (Morris and Salto). At Morris, maize hybrids AP162 (a) and AP9191 (b) were tested at three plant densities. At Salto, hybrids DK664 (c and d) and DK752 (e and f) were tested at two plant densities and three detasseling levels. At Morris, the arrows represent the date of a heavy rain and wind storm. Vertical bars represent SEM x 3.