The 1999 corn production season will be remembered as one of high yields and low prices. Grain yield at all testing locations for the Wisconsin Performance Trial program was greater than the 10-year average increasing between 13 and 73% (Table 1). Trial averages ranged from 147 to 222 bu/A for all hybrids tested. Yields were especially high in the northern production zones. Silage yield was also greater than the 10-year average with increases of 1 to 16 % (Table 2). Silage yields ranged from 7.5 to 10.1 Tons dry matter/A.

Table 1. 1999 Wisconsin Corn Performance Trials - Grain Summary (bu/A)
	1989-1998		1999		Percent
Location	N	Yield	N	Yield	Change

Arlington	1727	185	198	222	+ 20
Janesville	1727	177	198	222	+ 25
Lancaster	1727	170	198	192	+ 13

Fond du Lac	1525	159	159	207	+ 30
Galesville	1525	157	159	202	+ 29
Hancock	1524	178	159	202	+ 13

Chippewa Falls	1276	147	168	169	+ 15
Marshfield	990	137	168	179	+ 31
Seymour	922	144	69	171	+ 19
Valders	1400	145	168	199	+ 37

Ashland	129	129	16	157	+ 22
Spooner	1901	123	189	168	+ 37
White Lake	582	85	63	147	+ 73
Note: Seymour average includes New London 1989-1992.

Table 2. 1999 Wisconsin Corn Performance Trials - Silage Summary (T/A)
	1989-1998		1999		Percent
Location	N	Yield	N	Yield	change
Arlington	322	9.3	66	10.1	+ 9
Lancaster	245	7.7	66	8.9	+ 16
Fond du Lac	207	8.7	67	9.8	+ 13
Galesville	207	8.0	67	8.1	+ 1
Marshfield	346	6.6	60	7.5	+ 14
Valders	273	7.0	60	8.0	+ 14
Ashland	93	7.0	16	8.0	+ 14