As soon as the grapes were unearthed, grape growers asked when the grapes would be unearthed. How to manage after unearthing?
Over the years, many fruit growers have often “timed out†in accordance with their experience. This is extremely unscientific. Because the temperature at the same time every year is not stable. The scientific approach is: when the local day and night temperatures reach 10°C on average, the buds of the grapes begin to germinate and they can be unearthed on shelves. It has been observed that the temperature of apricot blossoms is the temperature at which grape roots are active. This is the reason why “apricot trees bloom and grapes are unearthedâ€. This period is basically in every March 20 - early April.
The effect of grape priming by twigs is very obvious. The practice is: after the grapes are removed from the cold soil, don't put on the shelves first, and let the branches lie on the ground to germinate. When the germination bud grows to the size of the peanut, it is attached to the shelf. This can generally increase production by 2 to 40%. Because the top of the grape has a strong advantage, if germination is done in an upright state, the upper buds are too prosperous, the middle buds are moderately weak, and the lower buds are inhibited or even unable to sprout, resulting in severe reductions in yield. If the shoots are allowed to germinate in a roughly horizontal and slightly apical state, the buds above and below the shoots will germinate uniformly, and the result will be normal. However, it is not allowed to put on the shelves when the buds are very large. As a result, the shelves will hit many buds and cause losses.
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