Research Article
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 |
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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.
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