Friday, July 24, 2015
Millerandage is a problem that affects fruit set in grapes and can be caused by a number of things; unfavourable climatic conditions, difficult fertilization, genetics, etc. With millerandage, flowers that fail to fertilize remain on the cluster, (unlike with coulure, another form of poor fruit set, in which the flowers abscise and fall off), becoming small, seedless berries commonly known as shot berries. Methinks the culprit was most likely wind, as I think this has been a rather windy spring/summer in the valley. Whoosh! Bye-bye, crop.