We always try to opt for the biological solution where possible. This vignette, pertaining to management of our cover crop in the vineyards, illustrates the point I am trying to make.
A major problem for almost every wine farm at this time of the year is a weed called Ramnas, a type of wild radish. It outcompetes the cover crops and will eventually hinder the flow of air through the vineyard (increasing the risk of fungal diseases) and where it grows particularly well it grows higher than the cordon and interferes with vineyard growth.
All weeds are messengers and what ramnas indicates is leached nitrogen. Most artificial fertiliser leaches and ramnas has the ability with it’s long taproot to go and mine the nitrogen. We have ramnas because we are in conversion of our vineyards from conventional to organic and eventually biodynamic management. Spier was conventionally farmed for many, many years. Instead of listening to the messenger, my fellow wine farmers shoot it.
PLEASE COMPARE THE TWO PHOTOS BELOW, ONE BEFORE THE CATTLE AND ONE AFTER.
Below is the after