Quality is questionable, as it will also harvest the unripe secondary clusters and any rot. (There are probably visual systems for cleaning these out.)
Grapes (and a lot of perennial fruits) are a little oddball in this discussion though, because they are very low impact. For example, you rarely (maybe once when first planting) have to till or fertilize or spray for weeds and we've got plenty of biodiversity in the turf.
http://www.youtube.com/watch?v=fv-AnyvWL7g around 38 seconds in.
Quality is questionable, as it will also harvest the unripe secondary clusters and any rot. (There are probably visual systems for cleaning these out.)
Grapes (and a lot of perennial fruits) are a little oddball in this discussion though, because they are very low impact. For example, you rarely (maybe once when first planting) have to till or fertilize or spray for weeds and we've got plenty of biodiversity in the turf.