1、Effect of Application Ratio of Potassium over Nitrogen on Litchi Fruit

The appropriate appli-cation of potassium–nitrogen fertilizer can inhibit litchi fruit rotting and benefit the healthy fruit rate. The effect was more evident on the 4th to 6th day of storage and reflected good fruit storability.

2、RATE AND TIME OF POTASSIUM FERTILIZATION INFLUENCE YIELD AND QUALITY OF

The requirement of potassium in litchi is much higher compared with nitrogen and phosphorus. Autumn application of potassium is useful because it helped to reduce excessive vegetative growth, and increased flowering.

3、Using slow

Lignin-based slow-release fertilizers maintained litchi yield and improved quality. Use of slow-release fertilizers can reduce the nutrient inputs. Slow-release fertilizers application may achieve litchi sustainable production.

4、Best NPK fertilizer for litchi

Conservation fertilizer usually refers to a fertilizer applied after the litchi is picked, which can effectively prevent the premature aging of fruit trees, thereby increasing the yield of litchi.

5、(PDF) Rate and Time of Potassium Fertilization Influence Yield and

Both cincturing (ringing) and exogenous auxins have been shown to reduce vegetative flushing and increase flowering, but the results have not always been consistent.

RATE AND TIME OF POTASSIUM FERTILIZATION INFLUENCE YIELD AND QUALITY OF

The requirement of potassium in litchi is much higher compared with nitrogen and phosphorus. Autumn application of potassium is useful because it helped to reduce excessive vegetative growth, and increased flowering.

Effect of Application Ratio of Potassium over Nitrogen on

When K and N fertilizers were applied at the ratio of 1.2, litchi had a better fruit quality with higher vitamin C content, soluble sugar, and soluble solid. With the increase of K₂0:N ratio, healthy fruit rate initially increased and then decreased.

Effect of application ratio of potassium and nitrogen on litchi fruit

【Conclusion】Reasonable potassium and nitrogen application ratios (K2O/N)not only can improve the epicarp and endocarp Ca/B ratio, but also can reduce the epicarp and endocarp K/Ca, Mg/Ca, (Mg+K)/Ca, and K/B.

How to Fertilize Lychee Trees for Optimal Growth?

A balanced fertilizer with equal parts nitrogen, phosphorus, and potassium (such as a 6-6-6 NPK) is ideal for Lychee trees. This blend supports overall growth and optimizes fruit production.

EFFECT OF APPLICATION RATIO OF POTASSIUM OVER NITROGEN ON LITCHI GROWTH

The results showed that when K and N fertilizers were applied at the ratio of 1.0-1.2, litchi leaves had a higher photosynthetic rate, oxidation resistance and starch buildup, leading to better fruit size and quality with higher vitamin C content, soluble sugars, and so on.

Litchi trees, as tropical fruit crops, have a high demand for potassium fertilizer during their growth. Potassium fertilizer promotes plant metabolic processes, enhances disease resistance, and improves fruit quality and yield. rational application of potassium fertilizer is crucial for the growth and fruiting of litchi trees.

I. Litchi's Demand for Potassium Fertilizer

The demand for potassium fertilizer in litchi trees mainly focuses on the following aspects:

1. Root System Development: Potassium fertilizer promotes root growth, strengthens root absorption capacity, and improves soil nutrient utilization efficiency.

2. Disease Resistance: Potassium fertilizer enhances the tree's ability to resist diseases, reduces pest and disease occurrence, lowers pesticide usage, and minimizes production costs.

3. Fruit Quality: Potassium fertilizer improves fruit quality, such as increasing sugar content, acidity, and taste.

4. Yield Increase: Appropriate potassium application stimulates tree growth and boosts litchi yield.

II. Methods of Applying Potassium Fertilizer

1. Base Fertilization: When planting litchi trees, incorporate potassium fertilizer into the soil as base fertilizer to promote root development.

2. Topdressing: During the growth period, apply additional potassium fertilizer (e.g., potassium sulfate, potassium nitrate) based on tree age, vigor, and soil conditions.

3. Foliar Spraying: This method rapidly supplements potassium by spraying potassium-containing solutions onto leaves, suitable for trees with obvious potassium deficiency symptoms.

III. Choosing the Right Type of Potassium Fertilizer

1. Potassium Sulfate: A common choice with high potassium content and low cost, ideal for acidic soils.

2. Potassium Nitrate: A compound fertilizer with moderate potassium content and nitrogen, balancing nutrient supply.

3. Potassium Chloride: A potent potassium source with high efficiency but higher cost, suitable for rapid potassium replenishment.

IV. Precautions

1. Avoid Overapplication: Excessive potassium may lead to soil salinization or nutrient imbalance.

2. Soil-Specific Selection: Choose fertilizers based on soil potassium levels and pH.

3. Combine with Other Fertilizers: Pair potassium fertilizer with nitrogen and phosphorus fertilizers to optimize nutrient uptake and efficacy.

selecting the appropriate type, dosage, and application method of potassium fertilizer is essential to meet litchi trees' nutritional needs, ensuring healthy growth and high-quality yields.