How to supplement calcium to grapes

Calcium is one of the essential elements in the process of grape growth, the demand for calcium is second only to potassium, once the grape is deficient in calcium, there will be less fruit setting, flower dropping and fruit dropping, which will have a huge impact on yield. So how to give calcium to grapes? Let's take a look at the detailed introduction.

1. Calcium deficiency symptoms

Growing in an environment with sufficient calcium, the root system of grapes grows very tightly and has strong absorption capacity; the leaves will also grow thick and green, with strong photosynthesis capacity and more nutrients, which can help flowering and fruit setting; the fruits will also expand rapidly, and the fruit size is uniform, which is not suitable for infection, which is conducive to improving yield and quality. However, the root growth of calcium deficiency is weak, the absorption capacity is weak, the chlorophyll content of leaves is low, the synthetic nutrients are low, the fruits are not sufficient nutrients, the fruits are small and the size is not suitable, the flowers and fruits are dropped in the early stage, and the fruits are easy to crack in the late stage.

2. Calcium supplementation time

To supplement calcium, we must first know the calcium supplement time. The grape absorbs calcium from germination to fruit setting at this stage, accounting for about 40% of the whole year. If calcium is sufficient, its roots are extremely germinating, flowering and fruit setting are good. The calcium absorbed from fruit setting to hard core accounts for about 30% of the whole year. At this time, if the calcium is sufficient, the pericarp will develop well, there will be no cracking phenomenon, and the disease resistance is also strong. The calcium absorbed from hard core to coloring stage accounts for 30% of the whole year, at this time, the single grain constitution of calcium selection is higher, the yield and quality can be significantly improved, and the leaf senescence phenomenon will not occur. Therefore, calcium supplementation for grapes should be carried out from these three stages.

3. Calcium supplement method

There are three ways to supplement calcium, one is to add appropriate amount of calcium fertilizer in the base fertilizer, spread it evenly in the base fertilizer, mix well and implant it together, the specific amount should be carried out according to the plant growth situation and soil calcium content; The second is root drenching, generally carried out after 35-40 days of flowering, at this time, the root is drenched by calcium powder with high root absorption utilization rate, improve transpiration, and transport calcium like fruit; The third kind of foliar fertilizer, when the plant is deficient in calcium, the calcium fertilizer is mixed with water to make thin fertilizer water, which is sprayed on the leaves. It has higher utilization rate than that without root fertilization.

The above is the grape how to calcium introduction, hope to help you, want to know more about the relevant knowledge, please pay attention to us.