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

Table 5

Acalypha ostryifolia and Helianthus annuus control in corn with PRE herbicides.

Treatment	⁢Dose; ⁢Product/ha	ACCOS		HELAN
		2013	2014	2013	2014
		Days after treatment
		95	109	95	48
		%
Atrazine	2.34 L	38	80	73	77
Isoxaflutole	0.47 L	77	98	100	79
S-Metolachlor + atrazine	4.96 L	76	90	100	85
Alachlor + atrazine	8.23 L	93	—	98	—
Mesotrione	0.47 L	55	60	99	60
Thiencarbazone-methyl + isoxaflutole	0.19 L	100	77	98	100
Acetochlor + atrazine	8.23 L	79	—	99	—
S-Metolachlor	1.59 L	79	83	97	77
Dimethenamid-P + atrazine	4.12 L	80	72	97	93
Acetochlor (74.8% formulation)	8.23 L	—	99	—	97
Rimsulfuron + mesotrione	0.47 L	60	67	97	93
Rimsulfuron + thifensulfuron-methyl	0.09 L	98	70	87	99
S-Metolachlor + atrazine + mesotrione	7.02 L	98	74	100	87
Dimethenamid-P	1.22 L	72	82	97	79
Pendimethalin	3.55 L	69	85	95	58
Saflufenacil	0.19 L	96	98	100	90
Saflufenacil + dimethenamid-P	1.12 L	99	98	100	97
Acetochlor (33% formulation)	3.55 L	92	63	100	72
S-Metolachlor + mesotrione	7.02 L	92	93	99	98
Pyroxasulfone	210.16 G	96	93	97	55
Untreated	—	0	0	0	0
LSD (0.05)		34	30	20	36

Bayer code for weeds: ACCOS: Acalypha ostryifolia Riddell; HELAN: Helianthus annuus L.
L = liters; G = grams.