What to Pay Attention to During Grape Blossoming Period
You may not know what to pay attention to during the grape blossoming period and the introduction of green plant and flower management techniques for grape blossoming period. Let's follow the editor to see the specific content!
Grapes need to be fertilized during the blossoming period, and boracic acid solution should be sprayed before flowering. Controlling the temperature during the day and at night can promote flowering, with a daytime temperature of 28°C and a nighttime temperature of 16-18°C. Keeping the air humidity at 50% is sufficient. Thin the inflorescences according to the growth state of the branches, removing unnecessary inflorescences to save nutrients. Let's understand the details together.
1. Appropriate Top Dressing
Before flowering, spray a 0.2%-0.3% borax solution or boric acid solution on the leaves, which can promote the elongation of the pollen tube and increase the fruit setting rate. Supplementing an appropriate amount of high-phosphorus fertilizer can also promote flowering. Pinching the top and pruning the branches according to the growth of the fruit tree can also reduce the consumption of nutrients.
2. Temperature Control
Controlling the temperature can increase the germination rate of pollen. Keep the daytime temperature at 28°C and the nighttime temperature at 16-18°C. A relatively warm environment is conducive to flowering.
3. Humidity Control
No watering is allowed during the flowering period, controlling the environmental humidity at 50% is sufficient. Watering once before flowering is enough to maintain soil moisture. Watering during the flowering period will increase soil humidity and reduce soil temperature, which is not conducive to nutrient absorption. Maintain good ventilation in the garden, ensuring humidity while avoiding dampness and appropriately ventilating.
4. Thinning Inflorescences
About 10 days before flowering, you can start thinning the inflorescences, pruning according to the growth state of the inflorescences on the branches. Each fruiting branch should first retain at least 2 inflorescences, weak inflorescences should be cut off, and weak fruiting branches may not need to retain inflorescences, while medium-strong branches should leave 1 inflorescence. When pruning the inflorescences, also deal with the residual branches and bad leaves to improve the light transmission of the grape trellis and increase ventilation.
5. Pest and Disease Control
For pests such as thrips, scale insects, green stink bugs, and leafhoppers, you can use avermectin 5-7 days before flowering for control. For downy mildew, black spot disease, and gray mold, you can spray imidacloprid plus carbendazim. Be cautious with agents from fruit setting to before bagging to avoid leaving traces on the fruit surface.
The above is a detailed introduction to what to pay attention to during the grape blossoming period and the management techniques for grape blossoming period. Do you know now?