Yield response of corn to planting date, SDSU Plant Science Farm, Brookings, SD, 2001.

Relative Maturity (MN rating)	- - - - - - - - - - - - - - Planting Date - - - - - - - - - - - -				Daily yield loss after May 6
	May 6	May 16	May 26	June 5
	- - - - - - -   bu./acre @13% moisture   - - - - - -
90-day	173	153	154	141	1.1
100-day	168	150	139	123	1.5
Average	171	151	147	132	1.3

 

NOTE:  Significant yield reductions occurred in both hybrids if planted on May 16 or later,

compared to the May 6 seeding date.  Daily yield losses in bushels per acre per day after

May 6 were higher for the 100-day hybrid (1.5 bu.) than for the 90-day hybrid (1.1 bu.). 

When averaged over both hybrids, the daily yield loss was 1.3 bushels per acre.

 

Source:

Hall, R.G. and K. K. Kirby.  2001.  Corn date of planting at Brookings.

NE Research Station Annual Progress Report, Plant Science Pamphlet 5:27-28.