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、Effects of foliar fertilizer additives on grape fruit quality and

It provides an efficient and low-cost foliar fertilizer adjuvant application scheme for grape cultivation in the Hexi Corridor region, which has important practical significance for improving the economic benefits and sustainable development of the fresh grape industry.

3、Optimizing grape growth, berry quality and phenolic compounds with

Research indicates that applying foliar Fe influences phenolic compounds' biosynthesis and boosts levels of berry anthocyanins, flavanols, thereby improving the quality of grape berries (Bavaresco et al., 2005; Shi et al., 2018).

(PDF) Effects of Foliar Application of Magnesium Fertilizer on

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

Effects of Foliar Application of Magnesium Fertilizer on Photosynthesis

Specifically, the foliar Mg application (M3) improved the photosynthesis (Pn), transpiration (Tr), and stomatal conductance (gs) of leaves when compared to the control.

Effects of Foliar Fertilizers on Fruit Qualities and Leaf Growth of

Abstract: To explore the influence of different foliar fertilizers on grape fruit quality and leaf growth, five kinds of foliar fertilizers were utilized on three grape cultivars,‘Summer Black’,‘Kyoho’, and‘Jumeigui’, during different grape growing stages.

Effects of foliar fertilizer additives on grape fruit quality and

In summary, potassium dihydrogen phosphate, as a widely used foliar fertilizer, can effectively improve the plant’s absorption efficiency of nutrients and further improve the quality of grape fruit when combined with adjuvants.

Effectiveness and concentration of foliar

Among the four tested fertilizers, K2SO4·2MgSO4 shows the best result, following are K2SO4, K2CO3 and KCl. Spraying concentration of 0.2%-0.5% is recommended in full-bloom stage and 0.5%-0.8% in the berry expansion stage of grape.

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

During shoot expansion in grape vines, there’s a short window to get the micronutrients critical to chlorophyll production, photosynthesis, and energy production into the leaves.

Biofertilizer Foliar Application to the Vineyard: Preliminary Effects

Abstract This work evaluated, for the first time, the effect of the biofertilizer BlueN® foliar application on grape composition. The experiment included a control (no treatment) and BlueN® foliar application at the onset of flowering. Treatments were arranged in a completely randomized block design with three replicates. Foliar application of BlueN® significantly increased total acidity ...

Foliar fertilization, also known as leaf spraying or foliar feeding, is a method of applying nutrients through plant leaves. This approach rapidly replenishes essential nutrients, improves fertilizer efficiency, and reduces environmental pollution. When fertilizing grapevines via foliar application, selecting the right fertilizer and proper techniques are critical. Below are key recommendations to optimize this process:

1. Understand Grape’s Nutritional Needs

First, familiarize yourself with the specific nutrient requirements of grapevines at different growth stages. For example:

• Before and after flowering: Higher demand for phosphorus (P) and potassium (K).
• Fruit ripening stage: Increased need for nitrogen (N) and calcium (Ca). Choosing foliar fertilizers tailored to these stages is essential.

2. Select Appropriate Foliar Fertilizers

Various foliar fertilizers are available, including liquid, solid, and micronutrient formulations. Consider the following when choosing:

• Nutrient composition: Ensure the fertilizer contains essential elements like N, P, K, magnesium (Mg), Ca, sulfur (S), etc.
• Concentration: Adjust dilution ratios based on growth stages and soil conditions to avoid over-fertilization, which can damage roots or inhibit growth.
• Brand reliability: Opt for trusted brands to guarantee efficacy and safety.

3. Proper Application Techniques

Follow these steps for effective foliar spraying:

• Dilute: Mix fertilizers according to instructions (typical ratios: 1:100 to 1:200, e.g., 1 spoonful per liter of water).
• Timing: Apply in early morning or late afternoon to minimize evaporation and nutrient loss.
• Coverage: Use a sprayer to ensure uniform distribution across all leaves.
• Safety: Wear gloves and masks to protect skin and eyes from irritation.

4. Monitor Plant Response and Adjust

After application, closely observe grapevine health. Symptoms like leaf yellowing or stunted growth may indicate over-concentration or improper use. Adjust by:

• Reducing dosage.
• Switching to alternative fertilizers.

5. Continuous Monitoring and Management

Foliar fertilization complements but does not replace soil-based fertilization. Maintain regular soil nutrient testing and irrigation checks to refine your fertilization plan.

6. Precautions and Environmental Considerations

• Avoid excess: Overuse can lead to toxicity or growth issues.
• No mixing with chemicals: Some foliar fertilizers may react with soil additives, reducing absorption.
• Eco-friendliness: Use foliar fertilization judiciously to minimize environmental impact.

foliar fertilization is a vital tool for enhancing grape quality and yield while promoting sustainable practices. By aligning fertilizer choices with grape nutritional needs and adhering to best application practices, you can maximize results while protecting the environment.