After a recent visit to the vineyards, this year's grapes are expected to be on the market early, which is a good thing for both farmers and consumers to enjoy juicy grapes. If want to bring grapes to market early, the first test is the farmer's management skills, from flowering to fruit need not only sunlight, water and fertilizer, more important is the technology!
Today, Topfert talk about the small details of grape flowering management.
During the flowering period the temperature requirement is relatively high. When the temperature reaches above 25℃, grapes bloom in large numbers, and the optimal temperature is 27.5 ℃. When temperatures fall below 15 C, grapes do not flower properly and fertilization shall be inhibited.
7-10 days before flowering, remove the overdense branches according to the amount of flower buds, and leave a stripe 15-20 cm apart on the same side branches. Keep 10-12 shoots per square meter on the shelf surface, and 3000-4000 shoots per mu of land. The core of the main shoot is the most test of skill, and the multi-main tendrines fan-shaped fruit branches are mostly renewed by single branch, which is renewed once every two years. Renewal branches from the roots of the one-year branches, when the length of about 50 cm to pick the heart, to increase the thickness, promote ripeness, as the next fruiting branches.
The growth and development stage of grape berry includes rapid expansion of young fruit, hard core, second expansion of berry and mature stage. The young fruit rapid expansion period is the most critical period in this process of growth, completed in 5-7 days,throw away small fruit that cannot develop normally, to ensure the neat and beautiful cluster. Early thinning is beneficial to granule enlargement. After thinning the fruit, the whole cluster is loose. For varieties with loose clusters, just thinning a few more dense fruit and small fruit can be.
So Topfert just said, Grape flowering management details, "main shoot core" is the key, juicy and tasty to help high yield !
