1、Influence of nitrogen fertilization rate and application frequency on

Results indicated that N rate had minimal influence on physical fruit quality parameters, whereas split frequency of N application significantly affected fruit weight, peel weight, and...

2、Nitrogen Nutrition of Fruit Trees to Reconcile Productivity and

Optimisation of the use of external and internal N sources is important for a sustainable fruit production, as N use efficiency by young and mature fruit trees is generally lower than 55% and losses of fertilizer N may occur with the consequent economic and environmental concern.

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.

Impact of foliar fertilization on apple and pear trees in reconciling

Moreover, it has become evident that foliar nutrients can regulate flowering, fruit yield and fruit quality. An extensive experiment was undertaken to study the potential effect of foliar fertilization on apple and pear trees to ameliorate productivity and alleviate environmental stresses.

Fall Nutrient Sprays in Tree Fruit

This publication presents some considerations to decide whether fall sprays are needed. In tree fruit and other plants, macronutrients such as nitrogen (N), potassium (K), phosphorous (P), calcium (Ca), magnesium (Mg) and sulfur (S) are required in much larger amounts than micronutrients (Table 1).

(PDF) Nitrogen fertilization of stone fruits: a

However, nitrogen application needs careful management , as both deficiency and excess of this nutrient element can adversely affect fruit size, quality, and yield. Excessive nitrogen can...

Effect of Foliar Nano

Based on the results of our 2‑year study, it can be concluded that the foliar application of nano-urea at 0.1 g/L during the shucks-off stage in combination with 75% of the recommended soil nitrogen dose (RDN) significantly enhances the fruit quality attributes of peach.

Is It Possible to Apply Foliar Fertilization to Plump Trees in Autumn?

Autumn is a critical period for the growth of plump trees, and foliar fertilization during this time can effectively meet the nutritional needs of the trees, promote fruit development, and thereby enhance both fruit quality and yield.

Response of Nitrogen Application in Fruit Trees: A Review

In older trees adequate nitrogen supply ensures dark green foliage, long terminal growth and increase in trunk circumference. In addition to aerial vegetative growth, response of nitrogen has also been realized for root growth.

Fertilization of peach for yield and quality, and optimization of

In China, determination of the optimal N application rate in fruit production has become a matter needing urgent attention.

Foliar nitrogen application during the late stage of plump growth significantly impacts fruit quality, but rational fertilization and avoidance of excess use are critical.

I. The Role and Importance of Nitrogen Fertilizer

A. Promoting Plant Growth

• Cell Division and Elongation: Nitrogen is a fundamental component of proteins, essential for cell division and elongation. During plump tree growth, nitrogen fertilizer promotes leaf expansion, enhancing photosynthetic capacity. Additionally, it stimulates root development, improving nutrient uptake and overall tree growth.
• Stress Resistance: Optimal nitrogen levels enhance the tree’s tolerance to cold, drought, and other stresses. For example, nitrogen improves water use efficiency under drought conditions, mitigating water deficit impacts.
• Flower Bud Differentiation: Nitrogen stimulates flower bud formation, increasing flower quantity and quality, which directly benefits fruit yield and quality.

B. Impact on Fruit Quality

• Fruit Size and Yield: Nitrogen affects plump fruit size and quantity. Proper application promotes fruit enlargement, improving size and shape. excessive nitrogen may reduce fruit count by overstimulating leaf growth, diverting photosynthates away from fruits.
• Sugar Content and Taste: Nitrogen enhances sugar content and palatability by promoting the synthesis of soluble solids, increasing sweetness.
• Color and Appearance: Nitrogen improves fruit color and attractiveness by boosting chlorophyll production, intensifying green leaf color and, subsequently, fruit vibrancy.

C. Environmental Adaptability

• Soil Health: Nitrogen improves soil structure, enhancing aeration and looseness, which aids root absorption and overall tree health.
• Pest Resistance: Moderate nitrogen use reduces pest and disease incidence by strengthening plant vigor and resilience.

II. Effects of Late-Stage Foliar Nitrogen Application on Plump Trees

A. Growth Promotion

• Fruit Development: Adequate nitrogen supports plump fruit enlargement, improving texture and taste.
• Yield Increase: Proper nitrogen application boosts yield by ensuring balanced growth and reducing malformed fruits.

B. Quality Enhancement

• Sugar and Palatability: Nitrogen increases soluble solids, enhancing sweetness and flavor.
• Appearance: Improved chlorophyll synthesis via nitrogen leads to brighter fruit color and greater market appeal.

C. Environmental Adaptability

• Soil Structure: Nitrogen enriches soil microstructure, facilitating root function and reducing compaction.

D. Economic Considerations

• Cost Management: Excessive nitrogen raises fertilizer costs, necessitating cost-benefit analysis to balance efficacy and economy.
• Economic Efficiency: Comparing fertilization strategies optimizes profitability while minimizing waste.

E. Social and Environmental Responsibility

• Environmental Protection: Excess nitrogen poses pollution risks; eco-friendly fertilizers and precise application minimize ecological harm.
• Social Accountability: Farmers must adhere to sustainable practices, complying with regulations to prevent environmental damage.

F. Policy and Regulation

• Policy Guidance: Governments should formulate science-based policies to encourage rational fertilization.
• Regulatory Compliance: Legal frameworks enforce sustainable practices, penalizing excessive or misuse of nitrogen.

G. Technological Advancements

• Innovative Fertilizers: Advanced, low-toxicity nitrogen products improve efficiency while reducing environmental risks.
• Training and Education: Farmers require training to master new technologies and avoid over-reliance on nitrogen.

H. Market Demand

• Consumer Preferences: Rising demand for high-quality plump fruits drives producers to adopt optimized fertilization strategies.
• Brand Development: Building reputable brands through quality and sustainability enhances market competitiveness.

Late-stage foliar nitrogen application significantly affects plump fruit quality, but rational use is paramount. Scientific fertilization methods maximize yields and quality while minimizing environmental impacts, ensuring sustainable agricultural practices.