Key Points for Managing Grape Bleeding Period
Let me share some small experiences in plant cultivation regarding the key points for managing the grape bleeding period. Let's take a look together below.
Key Points for Managing Grape Bleeding Period
Grape leaves begin to germinate and unfold from early spring. This period is called the bleeding period. During this time, the grape roots start absorbing water and nutrients from the soil, and the liquid in the vines begins to flow into the soil. If the wounds are caused by improper pruning or carelessness during this period, the juice will flow out from the wounds, which is known as the bleeding period phenomenon. The wounds contain a large amount of water and nutrients. The bleeding period is extremely harmful to the growth of the vines, reducing yield and potentially leading to plant death.
Timely Mulching
For grapes that have not been mulched for winter protection, pruning and trellising should be completed before the bleeding period. Mulching the grapes for winter protection is crucial for the germination and healthy growth of laying hens. Results show that if the roots are not well-developed and the branches and buds have been dried out, early frost damage may occur; when unearthed, they can easily be knocked off, causing bleeding. The best timing should be in early to mid-April, allowing the plants to gradually adapt to the external environment.
Timely Watering
After the grapes are unearthed and trellised, water should be applied for germination. The amount of water should be more than 50 cm deep in the soil layer. In areas with dry and little rainfall in spring, a thorough watering should be done at once to meet the needs of germination and branching. In non-buried areas, sufficient irrigation should be done before germination based on rainfall conditions.
Scientific Fertilization
Fast-acting nitrogen fertilizer should be the main fertilizer during the grape exudation period. Common fertilizers include urea, potassium dihydrogen phosphate, potassium sulfate, boric acid, etc. Since grapes are sensitive to chloride ions, chlorinated fertilizers such as potassium chloride are not recommended. Grapes require more potassium than nitrogen and phosphorus, so more potassium should be applied. For orchards that did not have a base fertilizer in the previous autumn and winter, organic fertilizers should only be applied to soil layers above 30 cm, and fertilization should not be too deep to avoid root damage and bleeding.
Increasing Ground Temperature
Early spring weather is changeable, ranging from high to low temperatures, and after watering, the temperature rises slowly. Therefore, after tilling, fertilizing, and watering, white plastic film should be completely covered between rows to quickly increase the ground temperature. At the same time, weeds should be removed to reduce diseases and pests, maintain soil moisture, and improve soil structure.
The above are the key points for dealing with the grape bleeding period, hoping to be of help to you. If you want to learn more related knowledge, please follow us.
The above [] introduces the complete introduction of the key points for managing the grape bleeding period, for everyone to learn and understand!