1、叶面施肥技术在果树生产中的应用

Foliar fertilization is a relatively economical and effective method for fertilizing fruit trees during their growth. When combined with conventional soil fertilization, it can better enhance fruit tree metabolism and overall growth.

2、Foliar nutrition: Potential and challenges under multifaceted

The potential of foliar fertilization in improving crop yield and quality under environmental stresses has been evaluated based on a meta-analysis. Foliar-applied fertilizers showed higher crop plants yield and quality traits by 15–19% and 9–29%, respectively, under different environmental stresses.

3、Foliar Nutrition, Biostimulants and Prime

Herein, we review the current knowledge regarding the canopy fertilization putting special emphasis on Fe nutrition and briefly provide insights into the nanofertilizer technology of the foliar feeding of fruit crops.

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.

How to Apply Foliar Fertilizer to Fruit Trees: Timing, Techniques

Discover the best time to spray foliar fertilizer, organic and micronutrient options for orchards, and proven methods to boost fruit tree growth and yield. Fix nutrient deficiencies with expert fertilization schedules.

(PDF) Effect of foliar fertilization on growth, yield and fruit quality

The effectiveness of nitrogen (N)+ zinc (Zn) soil and foliar fertilizer applications on growth, yield, and quality of apple (Malus domestic Borkh ‘Golden Delicious’) fruit was studied in the...

When & How to Fertilize Fruit Trees: Complete Guide

Discover the optimal times to fertilize fruit trees and choose the right fertilizer for robust growth and increased harvest. Get expert guidance now.

Recommendations for foliar nutrition of fruit crops

Features of foliar nutrition of fruit crops at different stages of growth and development. Recommendations and fertilizer application rates.

Foliar spraying of potassium sulfate during fruit development

In this study, three different potassium fertilizers and one water (F1: 0.65% KNO 3, F2: 0.88% KH 2 PO 4, F3: 0.56% K 2 SO 4, and F4: water) were sprayed on Citrus reticulata cv. Nanfeng at cell division, cell expansion, fruit ripening, and throughout fruit developmental stages, respectively.

The young fruit enlargement stage of trees refers to the period from flowering to just before fruit maturation. This is a critical phase for tree growth and rapid fruit expansion. During this stage, trees have high nutrient demands, particularly for major elements like nitrogen (N), phosphorus (P), and potassium (K). Additionally, microelements such as iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) play vital roles in fruit expansion and quality. Foliar fertilization is thus an efficient and convenient method to supplement nutrients.

1. Nitrogen Fertilizer (N): Promotes Leaf Growth and Photosynthesis

Nitrogen is essential for plant growth, development, and fruit enlargement. During the young fruit stage, proper nitrogen application stimulates new leaf growth and enhances photosynthetic efficiency, providing energy for fruit expansion.

• Recommendations: Urea, ammonium nitrate, and ammonium sulfate.
• Caution: Excessive nitrogen leads to excessive vegetative growth, competing for water and nutrients, which may hinder fruit enlargement. Apply in "small amounts, multiple times."

2. Phosphorus Fertilizer (P): Supports Root Development and Disease Resistance

Phosphorus is crucial for tree growth, flowering, and fruiting. During the young fruit stage, appropriate phosphorus application strengthens roots, improves disease resistance, and boosts overall tree health.

• Recommendations: Superphosphate, double superphosphate, and potassium dihydrogen phosphate.
• Caution: Overuse causes excessive vigor, reducing fruit quality. Avoid mixing with nitrogen fertilizers to prevent N-P imbalance.

3. Potassium Fertilizer (K): Enhances Fruit Quality and Stress Resistance

Potassium accelerates fruit maturation, improves quality, and strengthens resistance to pests and stress. Timely application during the young fruit stage optimizes yield and quality.

• Recommendations: Potassium sulfate, potassium chloride, and potassium nitrate.
• Caution: Excess potassium causes brown spots on fruit surfaces. Balance with N, P, and other nutrients.

4. Microelement Fertilizers (Fe, Mn, Cu, Zn, etc.): Aid Fruit Enlargement and Quality

Microelements like iron, manganese, copper, and zinc are critical for tree growth and fruit quality. Proper application during the young fruit stage promotes expansion and enhances nutritional value.

• Recommendations: Ferrous sulfate, manganese sulfate, copper sulfate, and zinc sulfate.
• Caution: Dosage should align with soil tests and tree needs to avoid deficiencies or excesses. Combine with other nutrients for balance.

5. Water-Soluble Fertilizers: Facilitate Nutrient Uptake and Fruit Expansion

Water-soluble fertilizers contain diverse nutrients for direct absorption, improving utilization efficiency. They enhance root uptake and fruit growth during the critical stage.

• Recommendations: Water-soluble compound fertilizers and alginic acid-based products.
• Caution: Follow dosage guidelines to prevent nutrient loss. Integrate with other nutrients for balanced nutrition.

During the young fruit enlargement stage, rational foliar fertilization is key to promoting fruit growth and quality. Select fertilizers based on tree needs and soil conditions, emphasizing nutrient balance. Scientific management and balanced fertilization strategies maximize yields and quality, achieving high-efficiency goals.