Although many options are available, most vineyards are using herbicides because of their low cost and reduced traffic through the vineyard. Maintain a 3 to 4 foot weed free width under the vines for good growth. Establish a permanent sod cover between the rows either prior to planting or immediately after planting to prevent erosion. Bluegrass is recommended for this purpose. Mulching with organic materials such as corn cabe, sawdust, composted grape pomace or fine wood chips, can reduce weeds, increase moisture and reduce erosion.
Plastic mulches are also beneficial.
Mulching is good on sandy or coarse soils but avoid heavy mulching on poorly drained soils. In the fall before planting, destroy weeds by deep plowing, systemic herbicides or mowing. Put plastic mulch down before planting. After planting, apply a preemergent herbicide to control annual weeds if plastic is not used. Spot treat or remove weeds around plants by hand.