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| | Weed Control Principles: No-Tillage Weed Control |
 | | However, early application can result in poor late-season control of some weeds, especially giant foxtail and fall panicum, when crop growth is slow and rain is abundant in the early part of the growing season. |
 | | Preemergence herbicides applied at or after planting can provide acceptable control in no-till, but more rainfall will be needed than in a conventional tillage seedbed for activity, since herbicide must move through crop residue to reach the soil surface. |
 | | The main key to control of perennial weeds is application of glyphosate, dicamba (Banvel), and/or 2,4-D when they are are in the bud to bloom stage, or as late in the fall as possible before the weeds senesce or growth ceases due to frost or freeze. |
| ohioline.osu.edu /b789/b789_8.html (768 words) |
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