1、Fertilizing Fruit Trees

Fruit trees are fertilized to ensure continued growth and fruit production. In the backyard orchard, proper pruning in addition to the application of nitrogen in the spring prior to or at bud break helps maintain this productive status.

2、Fruit yield of Valencia sweet orange fertilized with different N sources and the loss of applied N

A study of the effects of nitrogen fertilization on N losses and fruit yield of 6-yr-old Valencia sweet orange (Citrus sinensis (L.) Osb.) on Rangpur lime rootstock (C. limonia Osb.) grove was conducted in an Alfisol in Brazil from 1996 to 2001.

3、Nitrogen Nutrition of Fruit Trees to Reconcile Productivity and Environmental Concerns

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.

4、Dry weight partitioning and hydraulic traits in young Pinus taeda trees fertilized with nitrogen and phosphorus in a subtropical area

One year after planting, dry weight partitioning of all aboveground organs was performed. Phosphorus fertilization increased growth in all four families, while N fertilization had a negative effect on growth.

5、Cell division interference in newly fertilized ovules induces stenospermocarpy in cross

In this research, we induced stenospermocarpy interfering in newly fertilized ovule cell division. The research also elucidates the most sensitive stage for ovule/seed abortion in citrus. Experiments were conducted with ‘Afourer’ mandarin that cross-pollinates with several cultivars and species.

The Relation of Nitrogen to Potassium in the Nutrition of Fruit Trees

For a number of years it has been a common practice among fruit growers to apply nitrogen-carrying fertilizers, such as nitrate of soda and ammonium sulphate, to their orchards to the exclusion of all others.

The Fertilization

Shortly after fertilization, expression of ZmMCM6 is strongly induced. During progression of zygote and proembryo development, ZmMCM6 transcript amounts decrease and are low in vegetative tissues, where expression is restricted to tissues containing proliferating cells.

SESSION III

Juvenility is defined strictly in terms of ability of seedlings to form flowers. The juvenile phase ends with the attainment of the ability to flower. The appearance of the first flowers on the seedling is the first evidence that the plant is in the adult phase.

Evaluation of the effects of irrigation and fertilization on tomato fruit yield and quality: a principal component analysis

We carried out an experiment in a solar greenhouse spanning three consecutive growing seasons to evaluate the effects of irrigation and fertilization on the fruit yield and quality, water use...

Translocation of amino acids in the xylem of apple (Malus domestica Borkh.) trees in spring as a consequence of both N remobilization and root uptake

In a second experiment, 8‐year‐old trees growing in an orchard were fertilized with N either in the autumn or spring.

In the process of fruit tree cultivation, transplantation is a critical step that impacts not only the growth rate and survival rate of the trees but also the future yield and quality of the fruits. For fruit trees transplanted in the first year, proper fertilization is essential. Below are some recommendations for fertilizing newly transplanted fruit trees:

I. Preparation Before Transplantation

1. Choose the Optimal Time: Spring is generally the best season for transplanting fruit trees. Warmer temperatures and thawing soil during this period promote root recovery and growth. Additionally, spring coincides with the peak growth phase of plants, making timely fertilization crucial to support rapid recovery.
2. Select an Appropriate Location: The transplant site should be well-drained and elevated to avoid waterlogging, which can lead to root rot. The soil should be fertile, loose, and rich in humus to facilitate root development and nutrient absorption.
3. Root Pruning: Before transplantation, trim damaged or weak roots to reduce disease risks. Soaking the roots in water prior to planting can enhance water absorption and improve survival rates.

II. Fertilization During Transplantation

1. Apply Sufficient Base Fertilizer: Dig a 10–15 cm deep hole around the root system and evenly spread organic fertilizers (e.g., compost, manure) into it before covering with soil and compacting. This provides essential nutrients for quick recovery.
2. Top-Dress with Nitrogen Fertilizer: After transplantation, apply nitrogen fertilizer based on soil conditions and tree health. Nitrogen promotes leaf growth and photosynthesis but avoid overapplication to prevent nutrient excess.
3. Supplement Micronutrients: In addition to nitrogen, incorporate phosphorus and potassium fertilizers. Phosphorus supports fruit development and quality, while potassium enhances drought resistance and pest tolerance.

III. Fertilization After Transplantation

1. Regular Top-Up Fertilization: Newly transplanted trees require ongoing nutrition. Use foliar spraying or root-based fertilization depending on growth stages. Foliar spraying delivers nutrients directly, while root fertilization nourishes the tree systematically.
2. Adjust Fertilizer Dosage and Frequency: As the tree grows, its nutritional needs change. Increase fertilization during active growth phases and reduce it during fruit maturation. Tailor applications to soil tests and tree vigor.
3. Prioritize Organic Fertilizers: Opt for eco-friendly options like farm manure, green manure, or compost. Complement with balanced compound fertilizers or micronutrient supplements as needed.

IV. Key Considerations

1. Avoid Over-Fertilization: Excessive fertilizers can cause root burning or seedling damage. Follow the "small amounts, frequent applications" principle to prevent nutrient imbalance.
2. Balance Fertilizer Ratios: Mix fertilizers according to recommended proportions to avoid waste or harm. Be cautious of chemical interactions between different fertilizer types.
3. Maintain Cleanliness: Regularly remove fallen leaves and weeds around the tree to prevent pests and ensure adequate sunlight and airflow.
4. Monitor Tree Health: Observe growth closely. Symptoms like yellowing or wilting may indicate deficiencies (e.g., iron, zinc) or over-fertilization, requiring prompt adjustments.

scientific fertilization practices tailored to the tree’s needs and soil conditions are vital for the healthy growth of newly transplanted fruit trees. Fertilization is an ongoing process that demands regular observation and adaptation.