When is the best time to fertilize grapes
About the knowledge of when is the best time to fertilize grapes, as well as the best fertilizing time for grapes, let's learn about it together next.
1. Depending on the different stages of grape growth and development, the specific period for fertilization throughout the year is: the application of basic fertilizer is generally carried out before the grape roots are about to enter the second growth peak, in the northern regions, it is usually done in September to October every year, while in the southern regions, it is in October to November. Fertilizing at this time is beneficial for promoting new roots from injured roots and increasing the reserve of nutrients in the plant. In the northern region, the application of basic fertilizer in the entire grape garden should be completed before the first ten days of October, and in the southern region, by the end of November. If basic fertilizer is not applied in autumn due to other reasons, it can be scattered in the grape rows in the following spring before germination, shallowly turned into the soil with a rotary tiller, and watered thoroughly.
2. Top dressing is carried out during the grape growing period, aiming to promote plant growth and fruit development. Top dressing mainly uses fast-acting chemical fertilizers, such as sodium bicarbonate, superphosphate, potassium sulfate, etc. Top dressing method: for mature gardens, dig a shallow trench of 10 to 15 centimeters deep 50 to 60 centimeters away from the grape plant, evenly scatter the fertilizer in the trench, and then fill the trench. The timing, type, and amount of top dressing should be based on the grape's growth and development process throughout the year, the demand for nutrient types, and fertilizing in advance. Generally, top dressing includes the following types. In non-buried soil frost protection areas, the fertilizing time is half a month before germination, while in buried soil frost protection areas, it is usually done after the soil is unearthed and raised, and the beds are prepared. This top dressing mainly focuses on nitrogen fertilizer. When top dressing, be careful not to injure the vines to avoid excessive bleeding, and water immediately after top dressing is completed. Generally, apply 50 kilograms of diammonium phosphate compound fertilizer and 40 kilograms of potassium sulfate per 667 square meters.
3. 7 to 10 days before the grapes bloom, when the inflorescence begins to elongate, apply the pre-bloom fertilizer to further promote inflorescence development and increase the fruit-setting rate. Generally, apply 30 kilograms of diammonium phosphate compound fertilizer and 30 kilograms of potassium sulfate per 667 square meters. If the soil is rich in nutrients and water, and the tree is strong, this top dressing can be omitted.
4. After flowering, when the young fruits are the size of soybeans, this top dressing should combine nitrogen, phosphorus, and potassium fertilizers, especially focusing on phosphorus and potassium fertilizers. Apply 50 kilograms of sodium bicarbonate, 30 kilograms of superphosphate, and 30 kilograms of potassium sulfate per 667 square meters.
5. From the time the fruit clusters are sealed to before they change color, fertilizing during this period focuses on potassium fertilizer to increase the coloring rate and sugar content of the fruit and promote the normal maturation of the branches. Apply 40 kilograms of urea and 30 kilograms of potassium sulfate per 667 square meters. For weak vines or vineyards with high yields, urea can be increased to 60 kilograms per 667 square meters to prevent fruit shriveling or color change diseases.
Above is the complete introduction to when is the best time to fertilize grapes and the best fertilizing time for grapes, hoping it can be helpful to you. Don't forget to visit more experience and common sense!