1、Key Points in Citrus Leaf Fertilizer Application Techniques

This article aims to offer a detailed guide on how to fertilize citrus plants, highlighting the characteristics that a citrus fertilizer should have, when and why to use it, and the differences between liquid and granular fertilizers, helping you choose the most suitable solution for your needs.

2、2026–2026 Florida Citrus Production Guide: Fertilizer

Citrus fertilization research conducted in Florida within the past 30 years showed that tree growth and fruit yield where part or all of the fertilization program included CRF are similar or greater than growth and yield resulting from an all-conventional water-soluble N fertilization program.

3、Citrus Fertilizer Management: Nutrient Requirements and Application

Citrus fertilizers can be applied in various forms and methods, such as granular, liquid, and foliar. The timing and frequency of fertilizer application depend on the nutrient demand of the citrus trees, with the highest demand during spring and summer and the lowest during winter.

Optimized nutrients management improved citrus yield and fruit quality

Abstract: Clarifying current situation of farmers' fertilization and yield in citrus producing areas and the effects of different fertilization measures can provide a scientific basis for improving the yield and quality of citrus in China.

Effects of Fertilization Approaches on Plant Development and Fertilizer

In the present study, the effects of four fertilization approaches, including drip fertigation, on fertilizer use efficiency, citrus plant growth and fruit quality were studied in detail. The results of this study provide a guide for suitable fertilization and irrigation in China’s citrus industry.

Growth characteristics and fertilization techniques of citrus fruit trees

The main technical points for fertilizing citrus fruit trees are: According to the phenology and waiting period of citrus fruit trees, 4-5 times a year should be used for fertilization.

Key points of citrus drip irrigation and fertilization

Drip irrigation combined with fertilization offers a highly efficient way to deliver nutrients directly to the root zone of crops, significantly improving both water and fertilizer use efficiency.

Cultivation Techniques of Citrus Fruit Trees

The main techniques for fertilizing citrus trees involve four to five applications annually, based on their growth cycles. One is the base fertilizer, also known as the fruit pluck fertilizer, and the rest are top dressings—such as the budding fertilizer, fruit-setting fertilizer, and strong-fruit fertilizer.

Citrus fruit yield response to nitrogen and potassium fertilization

Herein, it is proposed that a comprehensive evaluation of nutrient dynamics in the soil-plant system is a suitable alternative to refine fertilization management programs in irrigated and fertigated citrus groves in tropical soils.

How to Fertilize Citrus Plants: Instructions for Use

This article aims to offer a detailed guide on how to fertilize citrus plants, highlighting the characteristics that a citrus fertilizer should have, when and why to use it, and the differences between liquid and granular fertilizers, helping you choose the most suitable solution for your needs.

Citrus-specific fertilizer is a specially formulated product designed to support the growth and fruiting of citrus trees. It contains a balanced mix of essential nutrients that promote healthy development and high-quality yields. Fertilization is a critical component of citrus cultivation management, and proper use of citrus-specific fertilizer can significantly enhance productivity and fruit quality. The following are key technical points for its application:

1. Understand Soil Conditions: Before fertilization, conduct soil tests to determine pH, organic matter content, and nutrient levels. This information guides the selection and dosage of fertilizer. If soil conditions are poor, amendments such as adding organic fertilizers or adjusting pH may be necessary before applying specialized fertilizers.

2. Select Appropriate Fertilizer: Choose fertilizers tailored to the citrus tree’s growth stage, soil conditions, and target yield. Options include nitrogen, phosphorus, potassium, and microelement fertilizers. Young trees typically require nitrogen-rich formulations, while mature trees need balanced nutrient ratios.

3. Timing of Fertilization: Apply fertilizer during peak growth periods (spring and summer). Avoid fertilizing in winter or early spring, as low temperatures slow plant growth, risking nutrient loss or root frost damage.

4. Application Methods: Use methods such as furrow application, hole placement, or foliar spraying based on soil type and fertilizer properties. Organic fertilizers can be spread evenly under the tree canopy or near roots, while chemical fertilizers should be dissolved and applied as liquid near roots.

5. Dosage Control: Fertilizer amounts depend on tree size, variety, soil conditions, and target yields. Excessive application can cause fertilizer burn, harming the plants.

6. Frequency of Application: Young trees typically require 2–3 applications per year. Mature trees may need adjusted frequencies based on soil health and nutritional needs.

7. Application Depth: For young trees, apply fertilizer shallowly; for mature trees, deeper application is recommended. Techniques like ring or strip application can improve nutrient uptake efficiency.

8. Precautions:

   • Avoid direct contact of fertilizer with trunks or leaves to prevent burning.
   • Do not mix with alkaline substances, as this reduces effectiveness.
   • Avoid applying during hot weather to minimize nutrient volatilization and loss.
   • Steer clear of over-fertilization to avert nutrient toxicity.

effective citrus fertilization relies on soil analysis, appropriate fertilizer selection, timely application, controlled dosages, and mindful practices. Scientific management of fertilization boosts yields, improves fruit quality, and supports the sustainable development of the citrus industry.