Table 24. Bixby, Vegetable Research Station, Tulsa County
	Irrigated, Sown 4 April 2006
	Roundup Ready vs. Conventional
				2006
	Variety	Herbicide	Treatment Combination	23-Jun	8-Aug	6-Oct	Total
				Weed-free Tons DM/Acre
	DKA41-18RR	Roundup X2	12	0.81	1.05	1.53	3.39
	DKA41-18RR	Roundup X2	3	0.73	1.06	1.42	3.21
	DKA41-18RR	Beyond/Pursuit	7	0.45	0.79	1.13	2.37
	OK 49	Select & 2,4-DB	10	0.40	0.67	1.18	2.25
	DKA41-18RR	Select & 2,4-DB	11	0.38	0.73	1.04	2.16
	DKA41-18RR	PP & 2,4-DB X2	5	0.52	0.58	1.02	2.12
	OK 49	PP & 2,4-DB X2	4	0.44	0.69	0.98	2.11
	OK 49	Beyond/Pursuit	6	0.37	0.75	0.85	1.96
	DKA41-18RR	None	1	0.42	0.48	0.27	1.16
	DKA41-18RR	None	9	0.23	0.39	0.26	0.88
	OK 49	None	8	0.15	0.33	0.28	0.76
	OK 49	None	2	0.15	0.40	0.20	0.74
	Mean			0.42	0.66	0.85	1.92
	5% LSD			0.23	0.14	0.19	0.44
	CV (%)			37.5	15.2	16.0	16.0
	OK 49			0.30	0.57	0.70	1.56
	DKA41-18RR			0.51	0.73	0.95	2.18
Planted	4/5/2006
Herbicide Date	Herbicide Used	Herbicide Rate	Herbicide Additive	Alfalfa Growth Stage	Weed size	Weed Density	Trt. Sprayed
5/18/2006	Roundup  WeatherMax	44 oz/A	AMS at  3 lbs/A	3-4 trifoliate	3 to 4" tall	>5%	3
5/18/2006	Poast Plus & 2,4-DB	2 pt/A + 3 pt/A	Crop Oil 1 qt/A	3-4 trifoliate	3 to 4" tall	>5%	4 & 5
5/18/2006	Beyond	5 fl oz/A product	AMS at  3 lbs/A	3-4 trifoliate	3 to 4" tall	>5%	6 & 7
5/18/2006	Select & 2,4-DB	8 fl oz/A + 3 pt/A	Crop Oil 1 qt/A	3-4 trifoliate	3 to 4" tall	>5%	10 & 11
5/18/2006	Roundup  WeatherMax	44 oz/A	AMS at  3 lbs/A	3-4 trifoliate	3 to 4" tall	>5%	12
8/18/2006	Roundup  WeatherMax	44 oz/A	AMS at  3 lbs/A	6 - 10" tall	10 - 12" tall	5 - 10% weeds	3
8/18/2006	Poast Plus & 2,4-DB	2 pt/A + 3 pt/A	Crop Oil 1 qt/A	6 - 10" tall	10 - 12" tall	5 - 10% weeds	4 & 5
8/18/2006	Pursuit	1.44 oz/A product	AMS at  3 lbs/A	6 - 10" tall	10 - 12" tall	5 - 10% weeds	6 & 7
8/18/2006	Select & 2,4-DB	8 fl oz/A + 3 pt/A	Crop Oil 1 qt/A	6 - 10" tall	10 - 12" tall	5 - 10% weeds	10 & 11
8/18/2006	Roundup  WeatherMax	44 oz/A	AMS at  3 lbs/A	6 - 10" tall	10 - 12" tall	5 - 10% weeds	12