Table 27.  Perkins, Agronomy Research Station, Payne County
	Rainfed, Sown 9 September 2005
	Roundup Ready vs. Conventional Alfalfa
				2006
	Variety	Herbicide	Treatment Combination	Weed-free Tons DM/Acre *
	HybriForce 600	Raptor	6	1.78
	HybriForce 600	None	2	1.75
	HybriForce 600	Poast Plus & 2,4-DB	4	1.69
	HybriForce 600	Select and/or 2,4-DB	12	1.67
	FD4RRA	Raptor	7	1.66
	FD4RRA	Poast Plus & 2,4-DB	5	1.65
	FD4RRA	Select and/or 2,4-DB	13	1.65
	FD4RRA	Sinbar	9	1.59
	FD4RRA	None	1	1.58
	FD4RRA	Roundup Weather Max	3	1.53
	HybriForce 600	Sinbar	8	1.51
	FD4RRA	None??	14	1.50
	Mean			1.63
	5% LSD			ns 0.20
	CV (%)			8.7
	HybriForce 600			1.71
	FD4RRA			1.57
	* Forage yield data only collected on 12 May 2006.
Plot Size: 5' X 25' overall; 3.3' X 20' harvested.
Alleys between ranges: 20'
Conventional Variety: HybriForce 600
Roundup Ready Variety: FD4RRA lot 215-5
Seeding Rate 12 lbs/acre
Treatment Combination	Alfalfa Variety	Herbicide Treatment		Rate		Date
1	FD4RRA	None		None		None
2	HybriForce 600
3	FD4RRA	Roundup Weather Max		22 fl oz/A		First fall after 3rd trifoliolate
4	HybriForce 600	Poast Plus & 2,4-DB		2 pt/A + 0.5 lb ai/A
5	FD4RRA
6	HybriForce 600	Raptor		5 fl oz/A
7	FD4RRA
8	HybriForce 600	Sinbar		0.5 lb/A		First fall after 3rd trifoliolate
9	FD4RRA
12	HybriForce 600	Select and/or 2,4-DB		8 fl oz/A + 0.75 lb ai/A		Whenever weeds may account for 5% of the forage
13	FD4RRA
14	FD4RRA	Roundup Weather Max		22 fl oz/A