How to supplement calcium for the latest grapes

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

1. Symptoms of calcium deficiency

Growing in an environment with sufficient calcium, the root growth of grapes is very tight and absorptive; leaves will also grow thick green and thick, strong photosynthesis, produce a lot of nutrients, which can help blossom and fruit setting; the fruit will also expand rapidly and the size of the fruit is uniform, so it is not suitable to be infected with diseases, which is conducive to improving yield and quality. On the other hand, 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 fruit is not sufficient nutrition, the fruit is small and unsuitable in size, the fruit is easy to crack in the early stage and easy to crack in the later stage.

2. Calcium supplementation time

If you want to supplement calcium, you must first know the time of calcium supplement. Grapes absorb about 40% of the calcium in the whole year from sprouting to fruit setting. If there is enough calcium, its root system is extremely sprouting, flowering and fruit setting is good. The calcium absorbed from fruit setting to hard core accounts for about 30% of the whole year, when the calcium is sufficient, the pericarp develops well, there is no cracking, and the disease resistance is strong. The calcium absorbed from the hard core to the coloring period accounts for 30% of the whole year, when the calcium selection of a single grain has a higher body mass, which can significantly improve the yield and quality, and the leaves will not appear premature senescence. Therefore, to supplement calcium to grapes should be carried out from these three stages.

3. Methods of calcium supplement

There are three ways to supplement calcium, one is to add an appropriate amount of calcium fertilizer to the base fertilizer, spread it evenly in the base fertilizer, and then plant it together according to plant growth and soil calcium content; the second is root leaching, which is usually carried out 35-40 days after Xiehua, when the roots are drenched to absorb calcium powder with high utilization rate, so as to improve transpiration and transport calcium like fruit. The third kind of foliar spraying fertilizer, when the plant is deficient in calcium, the calcium fertilizer is mixed with water into thin fertilizer water, which is sprayed on the leaves, and its utilization rate is higher than that of non-root fertilization.

The above is the introduction of how to supplement calcium to grapes. I hope it can help you. If you want to know more about it, please follow us.