Winter Annual Weed Response to Nitrogen Sources and Application Timings prior to a Burndown Corn Herbicide

Table 3

Winter annual weed number in the spring following N application timings. Data were averaged over N sources.

N application timing	2006	2007	2008	2009	2010	Average
	Weed number m^−2
Autumn	160	13	63	123	212	113
Early preplant	242	12	88	156	167	133
LSD ()	35	NS	NS	NS	NS	14