A common practice for many growers is to apply a top dressing and mulch covering along the rows of vines annually, which is typically done using a side delivery bulk feeder.
A typical mix is 50% compost, 10% biochar, and 40% mulch by volume. Roughly 8-10 tons of biochar is typically needed.
If interplanting cover crops as part of this process, the seeds can be premixed with the biochar/compost mix being broadcasted.
Persist™ PAF (wood vinegar) should be sprayed lightly every few weeks. Spray the leaves and the ground around the stem, giving the spray 30 minutes to 1 hour to act on the leaves, before rinsing off the plant with water. It is best to spray early in the day, rinsing the plant off before strong sun.
PAF is concentrated and must be diluted to between a 300:1 to 500:1 ratio before application by foliar or soaking spray. A 300:1 ratio is recommended.