Weed Control in Corn (Zea mays L.) as Influenced by Preemergence Herbicides

Table 3

Annual grass control in corn with PRE herbicides.

Treatment	⁢Dose			UROTE		ECHCG	BRARE
		2013	2014	2013	2014	2015	2015
		Taylor		Ganado	Ganado	Taylor	Ganado
		Days after treatment
		95	138	109	112	101	42
		%
Atrazine (A)	2.34 L	33	3	23	0	33	40
Fluthiacet-methyl + pyroxasulfone (P)	0.75 L	—	—	—	—	58	99
Fluthiacet-methyl + (P) + (A)	2.62 L	—	—	—	—	40	86
S-Metolachlor (S)	1.59 L	82	57	78	75	68	93
Isoxaflutole	0.47 L	80	38	94	80	67	65
(S) + (A)	4.96 L	85	53	86	83	63	82
Alachlor + (A)	8.23 L	99	—	89	—	—	—
Mesotrione (M)	0.47 L	37	8	53	88	55	10
Thiencarbazone-methyl + isoxaflutole	0.19 L	47	15	98	72	73	93
Acetochlor + (A)	8.23 L	72	0	98	86	90	72
(S) + (A) + (M) + bicyclopyrone	2.90 L	—	—	—	—	65	65
Dimethenamid-P + (A)	4.12 L	55	45	85	58	89	97
Acetochlor (74.8%)	8.23 L	—	83	—	73	97	100
Rimsulfuron + (M)	0.47 L	60	33	77	47	—	—
Rimsulfuron + thifensulfuron-methyl	0.09 L	74	10	60	61	40	47
(S) + (A) + (M)	7.02 L	98	44	83	73	92	76
Dimethenamid-P	1.22 L	78	53	55	63	73	87
Pendimethalin	3.55 L	96	52	86	99	97	58
Saflufenacil	0.19 L	69	7	81	23	33	78
Saflufenacil + dimethenamid-P	1.12 L	61	28	92	78	57	83
Acetochlor (33%)	3.55 L	75	10	78	96	63	49
(S) + (M)	7.02 L	98	65	67	95	96	94
(P)	210.16 G	88	37	75	99	42	78
Untreated	—	0	0	0	0	0	0
LSD (0.05)		33	33	22	48	29	33

Bayer code for weeds: BRARE: Brachiaria reptans L.; ECHCG, Echinochloa crus-galli L.; PANFA, Panicum fasciculatum L.; UROTE, Urochloa texana (Buckl.) R. Webster.
L = liters; G = grams.