1、Excessive boron fertilization

Boron (B) is an essential micronutrient for plant growth and development; however, the process of B toxicity in citrus production is still poorly understood. We proposed a hypothesis that B toxicity in citrus trees is related to the characteristics of B transport from soil to leaf or fruit.

2、Efficiency of foliar application of sparingly soluble sources of boron

Increases in plant growth without damage to leaf tissue and positive responses of key enzymes of orange trees in a range of nutrient concentration applications demonstrated the practical use of...

3、SL406/SS619: Boron (B) and Chlorine (Cl) for Citrus Trees

To maintain a viable citrus industry, Florida growers must consistently and economically produce large, high-quality fruit crops year after year. Efficiently producing maximum yields of high-quality fruit is difficult without understanding soil and nutrient requirements of bearing citrus trees.

[Optimized nutrients management improved citrus yield and

Optimized fertilization management could synergistically improve citrus yield, fertilizer use efficiency, and fruit quality.

(PDF) Soil boron fertilization: The role of nutrient sources and

Observations on boron deficiency and physiological responses of Citrus trees to varying boron in citrus. Proceedings of the Florida State Horticultural availability are dependent on rootstock.

Optimal Timing for Applying Boron Fertilizer to Fruit Trees

Boron fertilizer is a crucial plant nutrient that plays a significant role in the growth and development of fruit trees. Proper application of boron fertilizer can enhance tree growth, improve fruit quality, and increase yield.

Boron Liquid Fertilizer: Key to Boosting Citrus Farms in Florida

Utilizing boron-enriched liquid starter fertilizer can significantly enhance fruit yield and quality, making it indispensable for Florida’s citrus growers. Boron is an essential micronutrient that influences citrus quality and productivity. It plays key roles in:

BORON UPTAKE AND DISTRIBUTION IN FIELD GROWN CITRUS TREES

In low fertility tropical soils, boron (B) deficiency impairs fruit production. However, little information is available on the efficiency of nutrient application and use by trees. Therefore, this work verified the effects of soil and foliar applications of boron in a commercial citrus orchard.

Boron Nutrition and Boron Application in Crops

The application of micronutrients in citrus plants has usually been done by foliar spraying. The citrus plants are exigent in boron, zinc, manganese, iron and deficiency of these micronutrients is common in worldwide citriculture. In Brazilian citriculture, the B and...

Citrus Fertilizer Management: Nutrient Requirements and Application

Optimal citrus fertilizer management involves understanding nutrient needs and applying the right dosage based on tree age and seasonal requirements. A balanced approach, considering factors like climate and tree type, ensures healthy growth and abundant fruit production.

Boron fertilizer is an essential microelement fertilizer that plays a critical role in plant growth and development. For citrus trees, proper application of boron fertilizer can promote fruit enlargement and improve quality. Below are the best practices for using boron fertilizer:

1. Understand the Boron Requirements of Citrus Trees

Citrus trees require significant amounts of boron to maintain normal physiological functions during growth. Boron fertilizer enhances the synthesis of organic compounds such as sugars, fats, and proteins, strengthens disease resistance, and improves fruit quality and yield. Understanding boron requirements is crucial and can be achieved by consulting relevant materials or seeking advice from professionals.

2. Choose the Right Type of Boron Fertilizer

Various boron fertilizers are available, including boric acid, borax, and calcium borate. Select the appropriate type based on the growth stage of the tree and soil conditions:

• Seedling or early growth stages: Use boric acid or borax.
• Mature trees: Opt for calcium borate. Avoid excessive use to prevent boron accumulation in the soil.

3. Determine Timing and Methods of Application

Citrus trees demand higher boron levels during the growing season. The optimal periods for application are:

• Before budding in spring and after leaf fall in autumn.

Common application methods include:

• Foliar spraying: Dilute boron fertilizer and spray directly onto leaves (simple but less efficient).
• Soil application: Mix boron evenly into the soil (effective but requires preventing nutrient runoff).
• Root-targeted topdressing: Apply near roots for direct absorption (highest efficiency).

4. Control Dosage and Concentration

Apply 5–10 kg of boron fertilizer per mu (or adjust based on soil boron content and tree condition). Overuse can lead to toxicity, while insufficient amounts may cause deficiencies.

5. Combine with Other Fertilizers

Enhance overall nutrient uptake by mixing boron fertilizer with organic or inorganic fertilizers like phosphorus or potassium. This improves plant health and fruit quality.

6. Regularly Test Soil Boron Levels

Periodically analyze soil boron content to refine application rates and ensure balanced nutrition. Adjust strategies based on test results to avoid deficiencies or excesses.

Proper boron management is vital for maximizing citrus yields and fruit quality. By selecting suitable fertilizer types, timing applications correctly, controlling dosages, and integrating with other nutrients, growers can significantly improve economic returns while safeguarding tree health.