The article lists the following benefits of planting dormant-season cover crops in the alleys:
- minimize runoff from winter rains
- protect soil from nutrient and sediment loss in winter storms
- suppress weeds
- harbor beneficial arthropods
- enhance vine mineral nutrition
- increase soil organic matter
The following photo shows the vineyard as it looked in the spring of 2014 compared to this year, spring, 2022. The photo shows the west side of the vineyard looking from south to north. Here is what the article says are the benefits of putting in a cover crop:
- the clear benefits of cover crops were increased organic matter in the alleys and reduced sediment loss
- microbial biomass was increased in cover-cropped middles and there were indications that this effect extended to under the vines
- the benefits of cover crops are concentrated in the alleys where they were planted, but this benefit must be balanced with the compaction observed over time by the use of cultivation
References:
1. Richard Smith, Larry Bettiga, Michael Cahn, Kendra Baumgartner, Louise E. Jackson and Tiffany Bensen, "Vineyard loor management affects soil, plant nutrition, and grape yield and quality", California Agriculture, Volume62,Number4.