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How to apply grape germination fertilizer Principles of germination and fertilization

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The top dressing before germination is called germination fertilizer. The budding period of grapes is also the period when flower buds continue to differentiate. 

The nutritional status of this period is not only related to the germination rate and uniformity of the bud eyes in the current year, but more importantly, it is related to the continued differentiation or degradation of flower buds.

Generally, southern grapes have few flowers and small inflorescences. An important reason is the lack of nutrition during this period, which leads to poor differentiation of flower buds and becomes small inflorescences with tendrils. 

Fertilizers are applied regardless of the variety. Fertilization time is about 10 days before germination. Dosage: Apply "Jinzhengda" potassium sulfate type (15-15-15) compound fertilizer 25 kg and borax 3 kg per mu.

1. Why should germination fertilizer be applied to grapes? What does it do?

Generally, it is applied before the germination of grapes. This time, nitrogen fertilizer (water-soluble fertilizer with a large amount of elements is appropriate) is used as the main method, in order to promote neat germination, thick leaves, and large and strong inflorescences. 

Supply the nutrients for the growth of new shoots and flowering and fruit setting of grapes, reduce the degeneration of flower buds, facilitate the differentiation of flower buds, make the new shoots grow steadily, make the inflorescence develop well, promote the division of flower bud cells, and make the flowering and fruit setting normal. If there is too much nitrogen nutrition, it will lead to leggy vine leaves and aggravate flower and fruit drop.

During the shoot growth period, the inflorescence is separated to the flowering and fruit setting period, which requires more nitrogen nutrition and certain phosphorus and potassium nutrition. Nitrogen, phosphorus, potassium compound fertilizer or urea is applied. Magnesium fertilizers such as magnesium sulfate and borax are also applied during this period.

2. Fertilization period

Apply about 15 days before germination. Southern greenhouses promote cultivation can be applied after mulching.

3. Fertilizer Amount

Fertilizer rate reference value. Medium fertilizer varieties can be applied with 10-15 kg of nitrogen, phosphorus and potassium compound fertilizers.

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