1、Impact of foliar fertilization on apple and pear trees in reconciling

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.

2、The Effect of the Foliar Application of Potassium, Calcium

The Effect of the Foliar Application of Potassium, Calcium, Boron and Humic Acid on Vegetative Growth, Fruit Set, Leaf Mineral, Yield and Fruit Quality of 'Anna' Apple Trees

3、Cascading Effects of Boron Application Methods on Nutrient

This study aims to investigate how foliar and soil-based B application methods in pear trees influence B distribution, utilization, and their potential interactions with other mineral nutrients and metabolic processes.

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

This review presents an overview of the effects of the application of foliar fertilization, focusing on the efficiency comparison between inorganic and chelated fertilizers.

Response of pear trees to different fertilization treatment

Manure, CAN, NPK and HVS induced similar and higher fruit length (L) than control, whereas NPK induced higher fruit diameter (D) than manure, Agrozel, CAN applications and control with no...

Strategies for timing nitrogen fertilization of pear trees based on the

In order to improve the management of nitrogen (N) fertilization in pear orchards, we investigated the effects of application timing on the distribution, storage, and remobilization of N in mature pear trees in a field experiment at Jingtai County, Gansu Province, China.

How to Fertilize Pear Trees for Optimal Growth and Bountiful Harvests

Unlock the secrets to boosting pear tree production with effective fertilization techniques! This comprehensive guide covers essential nutrients, optimal timing, and application methods for both novice and experienced gardeners.

Impact of foliar fertilization on apple and pear trees in reconciling

To evaluate potential effectiveness of the foliar application of macro-, micronutrient and growth regulators on dynamics of physiological parameters of the pear and apple cultivars under abiotic stresses, three-year experiments were carried out under arid conditions at the Russian Research Institute of Arid Agriculture during the 2015-2017 ...

(PDF) Effect of foliar fertilization in Coscia Pear seedlings on

In this research a foliar application of balanced foliar fertilizer N.P.K (20:20:20) +TE with different concentrations (0, 5, 10, and 15 g/l) was conducted on Coscia pear seedlings.

Cascading Effects of Boron Application Methods on Nutrient

This study highlights the efectiveness of both foliar and root B application methods for B supplementation in pear trees, potentially enhancing growth and stress adaptation.

Pear trees, as an important fruit crop, play a significant role in agricultural production. Fertilization is a critical practice to ensure healthy growth, improve fruit quality, and enhance yield. When applying calcium fertilizers, both base fertilization and foliar application have advantages and disadvantages. The choice depends on factors such as the growth stage of pear trees, soil conditions, and environmental factors. Below is a detailed comparison of methods for applying calcium fertilizers.

I. Importance of Calcium Fertilization

Calcium is an essential nutrient for plants, playing multiple roles in their growth. It contributes to cell wall formation, maintaining structural stability and promoting normal development. Calcium also participates in the synthesis of plant hormones like ethylene and jasmonic acid, which regulate flowering and fruit ripening. Additionally, it promotes root development and enhances disease resistance. proper calcium application is crucial for improving pear yield and fruit quality.

II. Base Fertilization Methods for Calcium

1. Selecting Appropriate Calcium Sources: Choose calcium sources based on the tree’s growth stage and soil conditions. Common options include lime, gypsum, and calcium carbonate. Lime provides highly active calcium ions but may excessively raise soil pH, affecting other nutrients. Gypsum and calcium carbonate are less reactive but more stable for long-term use.

2. Dosage and Timing: Apply 50–100 kg of calcium fertilizer per mu (adjust based on tree age and soil fertility). Avoid high-temperature periods to prevent reduced solubility and absorption.

3. Application Methods:

   • Ditch/Trench Application: Suitable for large areas, ensuring even distribution.
   • Spot/Ring Ditch Application: Better for small areas, allowing precise control of depth and dosage.
   • Preparation: Loosen soil and remove weeds before application to improve solubility.

4. Precautions:

   • Avoid mixing lime with alkaline fertilizers to prevent soil imbalance.
   • Monitor for root burn; address issues promptly if observed.

III. Foliar Application Methods for Calcium

1. Choosing Foliar Fertilizers: Use water-soluble calcium sources like calcium sulfate or calcium chloride, which are easily absorbed by leaves and leave minimal soil residues.

2. Dosage and Frequency: Apply 5–10 kg per mu, adjusting frequency based on weather and growth stages. Increase applications in spring and reduce in summer.

3. Application Technique:

   • Spray directly onto leaves or dissolve calcium fertilizer in water.
   • Ensure even coverage without missing or over-spraying areas.

4. Precautions:

   • Avoid skin/eye contact to prevent irritation.
   • Monitor tree response and address abnormalities promptly.

IV. Integrated Calcium Application Strategies

In practice, combine base and foliar fertilization to meet calcium needs:

• Early Growth: Prioritize base fertilization with supplemental foliar sprays.
• Peak Growth: Increase foliar frequency to meet higher demands.
• Supplementary Methods: Use irrigation to enhance calcium uptake efficiency.

Calcium fertilization is vital for pear trees. The optimal approach depends on growth stages, soil conditions, and environmental factors. By integrating base and foliar methods with appropriate dosages, farmers can maximize yields and fruit quality.