Effects of Hybrid Maturity and Plant Population On Grain Yield of Short-Season Corn.

Short-season corn is grown on shallow, drought-prone soils in eastern Kansas. These hybrids are generally less than 106 days in maturity, however, longer maturity hybrids that silk with short-season hybrids but have an extended fill period are being introduced.  Four hybrids were grown at four populations at two locations.  Treatments included 100, 104, 110, and 112 day maturity hybrids grown at populations of 45, 57, 69, and 81, 000 plants per hectare. Studies were located at Parsons and Columbus, Kansas.   The effects of hybrid maturity and plant population on grain yield, yield components and agronomic characteristics such as silk date are presented.