Why can't we water grapes during their flowering period? What fertilizer should we use during their flowering period?

1. Why not water during the flowering period?

The management of grapes during the flowering period is very important and determines the fruit setting rate. Generally, you need to water the plant once before flowering to ensure soil moisture. It is not recommended to water during flowering, the soil moisture just needs to be maintained at 50%. Because the soil temperature will drop after watering, the plant's absorption capacity will also decrease, and the fruit setting rate within three days will decrease. Therefore, you must grasp the watering time and do not water randomly.

However, if the soil humidity is low, below 50%, watering is also required. At this time, you need to irrigate with small amounts of water. You can use drip irrigation to allow the water to slowly penetrate in. As long as the area around the roots is slightly moist, do not irrigate with large amounts of water.

2. What fertilizer to apply when flowering

It consumes more nutrients during the flowering period, so it is necessary to fertilize and supplement them in time. About a week before flowering, boron fertilizer should be sprayed on the leaves, and high-phosphorus fertilizer should also be applied to promote flowering. This will make the flowers healthier, the flower organs better developed, and the fruit setting rate will be increased. In addition, fertilizer should be applied after the flowers fade to supplement nutrients and facilitate the later growth of fruits.

3. Other management during flowering period

During the flowering period, in addition to watering and fertilizing, you should also pay attention to the temperature. It likes warmth, which should not be too low or too high. The daytime temperature should be 28 degrees, and the nighttime temperature should be between 16-18 degrees. Greenhouse cultivation should be ventilated frequently to allow better air circulation.