1、Foliar Fertilization of Crop Plants: Journal of Plant Nutrition: Vol 32 , No 6

Foliar fertilization requires higher leaf area index for absorbing applied nutrient solution in sufficient amount, it may be necessary to have more than one application depending on severity of nutrient deficiency.

2、Foliar Fertilization for Sustainable Crop Production

Here I review the extensive work that has been carried out on the effectiveness of foliar-applied nutrients, the mechanisms of foliar absorption, and transport.

3、Biofunctional Microgel‐Based Fertilizers for Controlled Foliar Delivery of Nutrients to Plants

Abstract Foliar application of micronutrients (e.g. Fe3+) onto plants over an extended time is challenging and often not possible due to insufficient rainfastness.

4、APPLICATION AND TIMING EFFECTS OF QOI AND DMI FUNGICIDES AND A FOLIAR FERTILIZER ON OVERALL PLANT HEALTH AND GRAIN YIELD IN CORN

Based on these data from the 2012 and 2013 growing seasons, applications of foliar fertilizer or foliar fungicides at the V5 growth stage were not beneficial. Applying foliar fungicides at R1 inconsistently improved some indicators of plant health and grain yield.

5、Copper

Following soil fertilization, foliar fertilizer is an effective practice for the application of some micronutrients. Microelements as iron (Fe) and zinc (Zn) are universally added to foliar fertilizers in order to compensate their deficiency (Kaya et al., 2005).

Revisiting fertilisers and fertilisation strategies for improved nutrient uptake by plants

Beyond single nutrients, composite NPs of different but compatible nutrients also can be delivered into plant tissues via soil or foliar application, where they slowly dissolve to release ions for plant assimilation, triggered by specific environmental signals.

RESPONSE OF MAIZE TO FOLIAR VS. SOIL APPLICATION OF NITROGEN–PHOSPHORUS–POTASSIUM FERTILIZERS: Journal of Plant Nutrition: Vol 25 , No 11

Three forms of foliar fertilization were applied once a week in equivalent concentrations of N, P, and K (0.12 g N, 0.08 g P, and 0.06 g K/L): Mineral forms (NPK), GG, and “Fertilizers & Chemicals” (F&C) foliar fertilizers; plain water acted as the control.

Effect of foliar application of urea on the growth and yield of tomato

Results showed that different yield components and yield of tomato were influenced by the foliar application of different concentrations of urea.

Effect of dose and type of fertilizer on flowering and fruiting of vanilla plants: Journal of Plant Nutrition: Vol 39 , No 9

Application of fertilizer to the substratum appears to improve reproductive parameters of vanilla plants and the production of beans, while foliar fertilization alone was ineffective in increasing crop productivity. Nutrients also seem to translocate from mature leaves to fruit racemes.

Growth and quality of cucumber, tomato, and green bean under foliar and soil applications of an aminochelate fertilizer

Plant growth, yield, and quality parameters significantly increased in response to foliar application, and to lesser extent soil application of aminochelate fertilizer.

Foliar fertilizer for evergreen plants is a nutrient supplement designed to promote growth. Typically available as liquids or powders, it can be directly sprayed onto leaves, where it is rapidly absorbed to provide essential nutrients.

I. Choosing the Right Foliar Fertilizer

1. Understand Plant Needs

• Analyze plant species: Different plants have varying nutrient requirements. For example, foliage plants may need more nitrogen, while fruit-bearing plants often require higher phosphorus and potassium.
• Consider seasonal factors: Plant growth and needs change seasonally. During winter, for instance, slow growth warrants reduced fertilization frequency to avoid leaf burn.

2. Select a Reliable Brand

• Research customer reviews: Evaluate user feedback to gauge product effectiveness and potential issues.
• Check ingredients: Ensure the fertilizer contains key nutrients like nitrogen (N), phosphorus (P), and potassium (K).

3. Determine Application Frequency and Method

• Dilution ratio: Follow recommended dilution ratios (as stated on packaging) to prevent overconcentration and leaf damage.
• Timing: Apply in early morning or late afternoon when photosynthesis is active, aiding nutrient absorption.

II. Application Methods

1. Prepare Tools

• Clean equipment: Use a residue-free sprayer to avoid contaminating soil or harming plants.
• Ensure water supply: Adequate water helps the fertilizer penetrate leaves effectively.

2. Proper Technique

• Even coverage: Spray uniformly to avoid overapplication in局部 areas, which can cause burns.
• Protect surroundings: Avoid splashing fertilizer onto other plant parts or soil to minimize waste.

III. Post-Application Care

1. Monitor Plant Response

• Observe symptoms: Stop application immediately and consult experts if plants exhibit yellowing, wilting, or other abnormalities.
• Document changes: Track plant reactions to refine fertilization strategies.

2. Adjust Fertilization Plan

• Tailor to needs: Modify frequency and dosage based on plant performance.
• Continuous evaluation: Regularly assess results and adapt practices to meet evolving needs.

IV. Key Precautions

1. Avoid Overapplication

• Strict dosage control: Adhere to manufacturer guidelines to prevent damage.
• Monitor plants: Act promptly if signs of excess fertilizer (e.g., leaf scorching) appear.

2. Environmental Considerations

• Avoid peak heat: High temperatures accelerate chemical breakdown, increasing burn risks.
• Ensure ventilation: Proper airflow prevents gas buildup from concentrated solutions.

3. Balanced Fertilization

• Combine肥料 types: Pair foliar fertilizers with other nutrients (e.g., soil-based) for comprehensive care.
• Optimize ratios: Tailor blends to soil conditions and plant demands for best results.

4. Seek Professional Guidance

• Consult experts: Address challenges by collaborating with horticulturists or extension services.
• Educate yourself: Study specialized resources to deepen your understanding and improve practices.

proper foliar fertilization can significantly enhance evergreen plant health and growth. success depends on meticulous planning, adherence to guidelines, and ongoing observation.