In this fifth video of our series ‘A year in the vineyards’ we look at flowering in the vineyards of Quinta dos Malvedos.
Flowering in the Douro vineyards usually occurs around the middle of the month of May, approximately two months after bud-break. This year flowering was up to 10 days later than last year in most of our vineyards, on account of the unusually wet and cool conditions of this spring. After the embryo bunches begin to flower, pollination is triggered almost immediately and is followed by fertilization, resulting in the formation of tiny berries. Fruit set, involving the rapid transformation of the embryo bunches into small clusters of green, pea-like berries, follows on quite swiftly from flowering. The berries gradually expand and ultimately become grapes.
The vine continues with its vegetative growth although at this stage there is a gradual slowing down of the vigour of the growing tips in favour of the developing bunches. Further canopy management is required at about the same time as flowering, namely guiding the shoots upwards through the twin wires of the trellis known as the foliage wires. This entirely manual operation is known as shoot positioning and ensures a good layout of the vine canopy in order to facilitate ongoing operations in the vineyard as well as helping to prevent vine diseases.