1、Effects of Foliar Application of Magnesium Fertilizer on Photosynthesis

This study demonstrated the essential role of foliar-applied Mg, with GABA, in improving grape physiology. Interestingly, the curve-fitting analysis of foliar Mg concentration and grape yield identified 2.14 mM of Mg as the optimal concentration for promoting grape growth.

2、Plant Growth Regulators Improve Magnesium Uptake And Berry Quality In

Researchers from the Sichuan Academy of Agricultural Sciences discovered that two plant growth regulators (PGRs)—6-Benzylaminopurine (6-BA) and 28-Homobrassinolide (HBL) can significantly improve magnesium absorption in Vitis vinifera cv. Shine-Muscat grapes while boosting fruit quality.

3、Foliar Zn, Mn, Fe, and Mg on Grapes During Spring Leaf

Early leaf expansion for grapes often takes place when soil temperatures are still low, which limits micronutrient uptake. In low pH and sandy soil conditions, it is common to see magnesium deficiencies. High levels of calcium and potassium also reduce available magnesium.

Grapes Magnesium Deficiency

Grapes are potassium-producing crops, but excessive potassium inhibits the absorption of magnesium by the roots of the grapes and transports magnesium ions to the above-ground parts, causing magnesium deficiency.

Managing Magnesium In Grapes

Magnesium sulfate (MgSO4), also sold as Epsom salt, is usually used to address magnesium deficiencies, especially if soil pH does not need to be adjusted. It can be applied either as a foliar spray or to the soil.

How to prevent and treat magnesium deficiency in grapes?

(1) Every year after leaf fall, furrows are opened and high-quality organic fertilizers are applied, and the amount of potassium fertilizers should be appropriately reduced in vineyards with serious magnesium deficiency.

Foliar Fertilization of Grapevines

Magnesium sulfate sprays are recommended on some crops to correct magnesium deficiency (3,4,5,18,26). It may be tried on grapes as an interim corrective measure along with soil applications.

Effects of Foliar Application of Magnesium Fertilizer on Photosynthesis

Abstract: Efforts to increase grape yields have focused on using nitrogen, phosphorus, and potassium fertilizers, often causing unintended magnesium (Mg) deficiencies.

5 Best Fertilizer For Grapes

While grapes don’t rely on supplemental feedings to survive, the fertilizer you choose can play a big role in the health of your garden soil. That’s why I think it’s so important to select a grape fertilizer based on expert advice and testimonials for the best results.

Effects of Foliar Application of Magnesium Fertilizer on Photosynthesis

This study demonstrated the essential role of foliar-applied Mg, with GABA, in improving grape physiology. Interestingly, the curve-fitting analysis of foliar Mg concentration and grape yield identified 2.14 mM of Mg as the optimal concentration for promoting grape growth.

Grapes are plants with a high demand for magnesium. Adequate magnesium promotes their growth and development while enhancing fruit quality. applying magnesium fertilizer is crucial for improving grape yield and quality. Here are some recommendations:

1. Understand the Magnesium Needs of Grapes

• Grapes require significant magnesium during growth to maintain physiological functions, including photosynthesis, cell division, and enzyme activity.
• Different grape varieties have varying magnesium demands. Generally, late-ripening varieties require more magnesium than early-ripening ones.

2. Choose the Right Magnesium Fertilizer

• Various magnesium products are available, such as magnesium sulfate, magnesium chloride, and magnesium nitrate. Select based on soil pH, growth stage, and climate.
• For acidic soils, use magnesium sulfate or magnesium chloride; for alkaline soils, opt for magnesium nitrate.

3. Determine Dosage and Timing

• Adjust magnesium application according to grape growth and soil conditions. Typically, 5–10 kg of magnesium sulfate per mu (0.067 hectares) meets most needs.
• Apply base fertilizer before flowering and topdress during fruit expansion for optimal results.

4. Application Methods

• Spread magnesium evenly over the soil, avoiding direct root contact to prevent burns.
• Irrigate immediately after application to aid absorption.

5. Coordinate with Other Fertilizers

• Combine magnesium with microelements (calcium, sulfur, iron) to enhance synergy.
• Potassium fertilizer can be mixed with magnesium to boost disease resistance and photosynthetic efficiency.

6. Monitor and Adjust

• Regularly observe grape growth and soil conditions. Address magnesium deficiencies or excesses promptly.
• Excessive magnesium can cause toxicity, so reduce dosage if soil levels are high.

7. Environmental Protection

• Avoid overapplication to prevent soil contamination.
• Use eco-friendly magnesium products to minimize environmental impact.

By following these steps, you can effectively supplement magnesium for grapes, promoting healthy growth and improving fruit quality and yield. rational magnesium management is key to optimizing grape production.