1、Control efficacy of Ca

Background: The preharvest application of Ca-containing foliar fertilizers can reduce the incidence of bitter pit (BP) in apples and improve fruit quality by increasing the Ca content and decreasing both the N content and the N/Ca ratio in fruits.

2、Effects of Different Foliar Fertilizer Treatments on Fruit Quality of

We found that the fruit hardness of two foliar fertilizers increased compared with the control after treatment. The fruit hardness of calcium–magnesium foliar fertilizer and 101 foliar fertilizer treatments were increased by 11.7% and 6.8% compared with the control, respectively.

3、Effects of foliar fertilizer additives on grape fruit quality and

The effects of different foliar fertilizer adjuvants on grape fruit quality and endogenous hormones in leaves were explored through a solar greenhouse experiment.

4、Foliar application of bioorganic fertilizer enhances plant nutrients

Decreasing chemical fertilizers and using bio-organic fertilizers (BIOF) are effective strategies for enhancing soil quality, promoting sustainable agriculture, and protecting the environment.

5、Effects of Foliar Fertilization: a Review of Current Status and Future

Chelated foliar fertilizers are effective for improving element utilization efficiency, crop yield, and quality. The physicochemical properties, molecular structure, chelating strength, and chelating rate of chelating agents modulate the effects of application of nutrients.

Effects of Foliar Fertilization on Nutrient Uptake, Yield, and Fruit

The results indicate that FF1 or FF2 could be used as a sustainable fertilizer strategy for pomelo trees because of its ability to improve the leaf and fruit nutrient concentration and enhance the fruit quality and productivity of pomelo.

Manipulating fruit quality through foliar nutrition

Exogenous supply of N to trees via foliar spray application, to improve the fruit quality and yield, is mainly achieved by the use of urea and in combination with potassium, in the form of potassium nitrate (KNO 3).

What Types of Fertilizers Should I Use to Improve Fruit yield

This article will guide you through the key nutrients, the differences between organic and inorganic fertilizers, application and how to address common issues like fruit deformities and overall quality.

Effects of foliar fertilizer additives on grape fruit quality and

Results: Different foliar fertilizer adjuvants can improve the quality of fresh grapes, and each treatment significantly increased the content of soluble solids in the fruit.

Calcium Fertilizers for Fruit Quality

Calcium Chloride – An effective foliar spray for improving fruit firmness. Gypsum (CaSO₄) – Improves calcium in soils with minimal pH effect. Lime (CaCO₃) – Long-term solution for acid soil correction and calcium replenishment. Chelated Calcium – For high-efficiency foliar application, especially in alkaline or saline soils.

The plump tree (Prunus salicina) is a widely cultivated fruit tree valued for its delicious and nutritious fruits. To ensure healthy growth and enhance fruit quality, foliar fertilization is a critical management practice. Selecting the appropriate foliar fertilizer is essential for promoting tree development, improving disease resistance, and increasing yield and fruit quality.

I. Principles for Selecting Foliar Fertilizers

1. Targeted Nutrition: Choose fertilizers based on the tree’s growth stage and nutritional needs. For example, high-nitrogen fertilizers promote leaf growth and flower bud differentiation during early growth stages, while phosphorus- and potassium-rich formulas support fruit expansion and quality during later phases.

2. Safety: Opt for environmentally friendly and tree-safe formulations. Avoid unstable or toxic compounds that could harm the tree or ecosystem.

3. Regional Adaptability: Consider local climate and soil conditions to ensure optimal nutrient absorption. Environmental factors significantly impact fertilizer effectiveness.

4. Cost-Effectiveness: Balance efficacy with economic practicality. Select affordable options that meet nutritional requirements without overburdening costs.

II. Common Foliar Fertilizers and Their Roles

1. Urea: A widely used nitrogen source, urea accelerates leaf growth, enhances photosynthesis, and improves cold/drought resistance. It boosts yields by increasing flower bud formation.

2. Potassium Dihydrogen Phosphate: This compound provides phosphorus and potassium, promoting root development, disease resistance, and cold hardiness. It also improves fruit sweetness and texture.

3. Micronutrient Fertilizers: Boron, zinc, iron, and other trace elements prevent growth stunting and quality loss caused by deficiencies. They are vital for overall tree health and fruit excellence.

4. Amino Acid-Based Fertilizers: Rich in organic matter, these fertilizers stimulate root growth, strengthen disease resistance, and enhance fruit flavor and sweetness.

5. Seaweed Extracts: Containing natural growth regulators and minerals, seaweed fertilizers improve stress resilience, regulate growth cycles, and elevate fruit quality.

III. Application Methods and Techniques

1. Dilution Ratio: Follow manufacturer guidelines (typically 1:500). Over-concentration risks leaf burn, while under-concentration reduces effectiveness.

2. Timing: Apply in the morning or evening when temperatures are cool, minimizing evaporation and leaf damage. Avoid midday heat.

3. Target Areas: Spray on the undersides of leaves for better absorption. Reduce volume or frequency on tender new growth to avoid harm.

4. Dosage: Adjust based on tree health and soil fertility. Excessive use wastes resources and may harm the environment.

5. Frequency: Increase applications during spring flush and summer growth spurts. Reduce or halt during fruit ripening (autumn) and dormancy (winter).

IV. Evaluating Effects and Post-Application Management

1. Assessment: Monitor tree vigor, leaf color, and fruit quality. Healthy growth and improved taste indicate success, while yellowing leaves or poor fruit suggest issues.

2. Integrated Care: Complement foliar fertilization with pruning, thinning, irrigation, and pest control. Timely operations like fruit thinning and bagging ensure market competitiveness.

Selecting the right foliar fertilizer tailored to growth stages and environmental conditions is key to optimizing plump tree productivity and fruit quality. By combining scientific fertilization with comprehensive management, growers can maximize economic returns while safeguarding tree health.