Winegrowers are familiar with yellowish-cream chlorosis on the edges of the grape leaves, and dark green color in the middle of the leaf veins (in the case of red varieties, instead of yellow, you may notice a reddish color).
This is due to magnesium deficiency.
What is the role of magnesium in grapes?
Magnesium is a central component of chlorophyll and participates in photosynthesis. Also this element activates enzymes needed for plant growth. Its lack appears on the leaves in mid-summer.
In case of magnesium deficiency, carbohydrates accumulate in the leaves and are not transferred to other parts of the plant. Therefore, its degradation limits the plant’s ability to produce and distribute carbohydrates.
Applying high-potassium fertilizers is important in vine culture, but at the same time, we should not forget to enrich the soil with magnesium. Excess amounts of potassium and calcium block the absorption of magnesium. Therefore, it is important not to supply only certain elements to the plant, but to maintain the correct balance of nutrients required by the plant.
Magnesium deficiency is common in soils with a pH of less than 6 and greater than 7.5. In order to choose the right fertilizer, it is necessary to measure the micro and macro elements in the soil.
In order to eliminate magnesium deficiency, it is necessary to add the NPK fertilizer to the soil to contain microelement magnesium. It is also possible to adjust magnesium supplementation with drip irrigation system and foliar feeding.
If you need to conduct a soil analysis, fill in the link: https://baraka.ge/service/sando-nidagis-analizi/
Fertilizers with high magnesium content can be found on the website: https://baraka.ge/product-category/sasuqi/
For more information on these and other topics, see Agrocompany Baraka’s YouTube channel – https://www.youtube.com/@baraka.georgia2230