Evaluating the Impact of Starter Fertilizer on Winter Canola Grown in Oklahoma

Table 2

Canola stand count as influenced by seed-placed diammonium phosphate (DAP) and nitrogen (N) application method two weeks after emergence at Lahoma and Perkins, OK, in 2011–2013.

Treatment	DAP with seed	N/P in DAP	N preplant	N topdress	Stand count
					Lahoma	Perkins
	kg ha^−1				Plants m^−2
1	0	0/0	0	0	87	44
2	0	0/0	56	84	88	38
3	0	0/0	56N/14P	84	82	43
4	17	3/3.5	53	84	65	41
5	34	6/7	50	84	50	35
6	51	9/10.5	47	84	33	24
7	67	12/14	44	84	31	23
8	84	15/17.5	41	84	18	23
9	0	0/0	0	140	90	58
10	17	3/3.5	0	137	57	43
11	34	6/7	0	134	50	29
12	51	9/10.5	0	131	33	30
13	67	12/14	0	128	25	26
LSD					15	19

All treatments received at total of 140 kg N ha⁻¹ except for the unfertilized check.