1、Exogenous nitrogen uptake and allocation in chestnut

Thus, ensuring an adequate supply of nitrate N fertilizer in the soil accompanied by a commensurate increase in foliar fertilizer application can effectively meet the nutrient requirements associated with the rapid growth of chestnut seedling shoots.

2、Nutrient status and fruiting response of Young Chinese Chestnut trees

Development of nitrogen (N) fertilization guidelines for Chinese chestnut trees in North America has been hampered by the paucity of research-based information.

3、Impact of fertilization on chestnut growth, N and P concentrations in

On the basis of these experiment results, organic compound fertilizer at 2 kg/tree and peanut cake at 1 kg/tree are recommended to maximize chestnut growth and minimize water pollution.

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

Foliar fertilizer application after soil fertilization is an effective method to increase the contents of trace elements in crops and crop yield, and to improve the soil environment. However, the application of inorganic foliar fertilizer results in difficulties in nutrient absorption and migration in plants.

Nutrient Management

Fertilizer use during the first year is not recommended and may cause damage to roots. Fertilizer recommendations for years 2-5 are based off of better-studied systems, including apple. Using the table below, you can select the fertilizer of your choice based on availability and specific needs.

ALL FOLIAR FERTILIZATION CAN AND SHOULD RESULT IN A YIELD BENEFIT AND

Foliar fertilization can meet the plant’s demand for a nutrient at times when soil conditions (low temperature, low soil moisture, pH, salinity and others) render soil-applied fertilizers ineffective.

How to manage chestnuts after harvest

Spray foliar fertilizer or root fertilization as soon as possible after chestnut fruit picking to restore tree potential, enhance leaf photosynthetic ability, and ensure sufficient nutrients for flower bud differentiation.

ARTICLE

Thus, ensuring an adequate supply of nitrate N fertilizer in the soil accompanied by a commensurate increase in foliar fertilizer application can effectively meet the nutrient requirements associated with the rapid growth of chestnut seedling shoots.

Nutrient management considerations for cultivated chestnut trees

Excessive nitrogen fertilization will over-invigorate vegetative growth on bearing trees, which will result in reduced flower bud formation and reduced fruit yield. It is important to provide enough nitrogen to maintain healthy nutritional status, but to not oversupply nitrogen.

Chestnut Response to Organo

An alternative that can help to overcome the problem of the application date is to use slow-and/or controlled-release fertilizers and to apply them earlier.

The health of chestnut leaves directly impacts fruit development and yield during growth. Improper use of foliar fertilizers may damage leaves, disrupt nutrient balance, or hinder normal fruit development. careful selection and application of foliar fertilizers are essential to ensure healthy chestnut growth.

I. Reasons for Fruit Drop Due to Foliar Fertilization

1. Improper Fertilizer Use: Excessive nitrogen fertilizer promotes overgrowth, depleting nutrients and causing poor fruit development or drop. Overuse of phosphate fertilizer also reduces flowering and fruiting, lowering yields.

2. High Fertilizer Concentration: Excessive concentrations damage leaves, disrupt photosynthesis, and impair fruit development.

3. Inappropriate Fertilizer Ingredients: Components like hormones in foliar sprays may negatively impact growth if used long-term.

4. Environmental Factors: Conditions such as high humidity or temperature reduce fertilizer absorption, diminishing effectiveness.

II. How to Prevent Fruit Drop from Foliar Fertilization

1. Optimize Fertilization: Adjust nitrogen, phosphorus, and potassium based on growth stages and soil conditions. Use nitrogen judiciously and tailor phosphorus/potassium to soil tests.

2. Select Suitable Fertilizers: Choose microelement-rich formulas that enhance quality while avoiding harmful ingredients.

3. Control Concentration: Keep foliar spray concentrations below 0.2% to avoid leaf burn.

4. Monitor Growth: Regularly check leaf color, size, and quantity to detect issues early.

5. Improve Environmental Conditions: Maintain ideal temperature, humidity, and sunlight to boost fertilizer efficacy.

6. Clean Debris: Remove fallen leaves promptly to reduce pest/disease risks.

7. Enhance Management: Prune branches, thin flowers/fruits, and control pests to improve yield and quality.

8. Safety Precautions: Wear protective gear, store fertilizers in cool, shaded areas, and avoid ingestion or skin contact.

To prevent fruit drop, select appropriate foliar fertilizers, follow proper application methods, and adjust concentrations based on chestnut growth and soil conditions. Rational fertilization combined with diligent management ensures healthy growth and minimizes risks.