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

Table 4

Oil and protein content of canola as influenced by seed-placed diammonium phosphate (DAP) and nitrogen (N) application method in 2011–2013.

Treatment	DAP with seed	N/P in DAP	Preplant N	Topdress N	Oil content		Protein content
					2011-2012	2012-2013	2011-2012	2012-2013
	kg ha^−1				%
1	0	0/0	0	0	43.21	—	19.89	20.32
2	0	0/0	56	84	42.43	40.15	20.93	21.12
3	0	0/0	56N/14P	84	43.14	41.14	20.82	21.50
4	17	3/3.5	53	84	42.97	40.62	21.01	21.97
5	34	6/7	50	84	43.21	40.94	21.00	21.62
6	51	9/10.5	47	84	43.27	41.38	20.94	21.28
7	67	12/14	44	84	43.16	41.28	21.98	21.69
8	84	15/17.5	41	84	43.06	41.39	21.20	21.42
9	0	0/0	0	140	42.86	—	21.05	21.33
10	17	3/3.5	0	137	42.87	40.50	21.32	21.95
11	34	6/7	0	134	42.89	41.22	21.12	21.90
12	51	9/10.5	0	131	43.21	41.25	20.95	21.56
13	67	12/14	0	128	43.03	41.28	21.04	21.48
LSD					NS	0.49	0.75	0.75

— (dash): no data available.