1、Foliar astaxanthin application effectively reduces nitrate accumulation

In this study, we analyzed the effects of foliar astaxanthin application on lettuce growth, nitrate accumulation, phenolic content, and antioxidant capacity of two different genotypes of lettuce.

2、An Energy

The aim of this study was to evaluate the effect of foliar application of FB in lettuce seedlings on (i) plant growth and stress tolerance, (ii) gene regulation level, and (iii) the rhizosphere microbiology ecology and explanation of its mechanism in agriculture.

3、The effect of foliar application of different potassium fertilizers on

According to the research findings, potassium nitrate fertilizer had a significant impact on growth parameters in both years. The applications of potassium thiosulfate and potassium phosphite had comparable effects on growth and development.

A Sustainable Technology Approach to Lettuce

In this context, an experiment was developed to evaluate the influence of several commercial foliar fertilizers and biostimulants (Cropmax, FullGreen, Nutrigizer, and Rerum) on the yield and quality parameters of lettuce cultivated in a greenhouse system.

Guide to Foliar Fertilization: Best Practices, Dosages, and Benefits

However, to fully realize its benefits, farmers must tailor foliar fertilizer programs to their crop types, growth stages, local conditions, and nutrient profiles.

Enhancing Lettuce (Lactuca sativa) Productivity: Foliar Sprayed Fe

Over time, decreasing iron levels can negatively impact plant health and productivity, making the monitoring and management of iron in aquaponic systems vital. This study investigates the use of Fe-Alg-CaCO 3 microparticles (MPs) as foliar fertilizer on lettuce plants in an aquaponic system.

Effect of foliar application of amino acid biostimulants on growth

Biostimulants containing amino acids and minerals have been used commercially to promote plant growth, yield and nutritive value of food crops. Limited studies on biostimulants application are available on lettuce production in soilless systems.

How to Fertilize Lettuce Plants for Optimal Growth and a Healthy Harvest

Explore both organic and synthetic fertilizers, along with effective methods like foliar feeding. Avoid common mistakes and learn to maintain optimal soil conditions for a bountiful harvest.

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

Chelated foliar fertilizers are effective for improving element utilization efficiency, crop yield, and quality. The physicochemical properties, molecular structure, chelating strength, and chelating rate of chelating agents modulate the effects of application of nutrients.

The effect of foliar application of different potassium fertilizers on

Rational fertilization is the main measure to improve crop yield, but there are differences in the optimal effects of nitrogen (N), phosphorus (P) and potassium (K) rationing exhibited by the...

Lettuce, a popular vegetable prized for its nutritional value and crisp texture, requires careful attention to foliar fertilization to ensure healthy growth and higher yields. Below is a detailed guide to the essential foliar fertilizer solutions and their application methods for lettuce.

I. Growth Requirements of Lettuce

1. Light: Lettuce thrives in sunny environments. Adequate sunlight promotes photosynthesis and robust plant development.
2. Temperature: Lettuce is sensitive to temperature. The optimal growth range is 15–20°C. Growth slows significantly below 10°C or above 35°C. Sowing should align with temperature-suitable periods.
3. Water: Lettuce requires consistent moisture but avoids waterlogging. Excessive water leads to root hypoxia. Irrigate based on soil humidity and weather conditions.
4. Soil: Loamy, well-drained, and fertile sandy soil is ideal. Heavy clay soils or waterlogged areas hinder growth.

II. Types and Application of Foliar Fertilizer Solutions

1. Potassium Dihydrogen Phosphate (KH₂PO₄):

   • Function: Provides phosphorus and potassium.
   • Application: Dilute with water and spray evenly on leaves. Apply every 7–10 days for 2–3 cycles.

2. Urea:

   • Function: Nitrogen source for vegetative growth.
   • Application: Dissolve in water and spray onto leaves. Apply every 7–10 days for 2–3 cycles.

3. Ammonium Sulfate ((NH₄)₂SO₄):

   • Function: Nitrogen supplement for rapid growth.
   • Application: Dissolve in water and spray evenly. Apply every 7–10 days for 2–3 cycles.

4. Borax (Na₂B₄O₇·10H₂O):

   • Function: Enhances photosynthesis and development.
   • Application: Dissolve in water and spray. Apply every 7–10 days for 2–3 cycles.

5. Trace Element Fertilizers:

   • Function: Supplies iron, zinc, copper, manganese, etc.
   • Application: Dissolve in water and spray. Apply every 7–10 days for 2–3 cycles.

6. Humic Acid:

   • Function: Improves soil structure and water retention.
   • Application: Dissolve and apply to soil surface. Spray every 7–10 days for 2–3 cycles.

III. Key Considerations and Recommendations

1. Avoid Over-Fertilization: Excessive foliar spraying can harm plants. Follow recommended dosages strictly.
2. Weather Adjustments: Reduce or delay applications during rainy/cool conditions, as absorption efficiency declines.
3. Rational Combination: Mix compatible fertilizers (e.g., combine KH₂PO₄ with urea) to optimize nutrient uptake.
4. Soil Testing: Conduct pre-application soil tests to assess nutrient levels and pH, ensuring targeted fertilization.

Foliar fertilizers like potassium dihydrogen phosphate, urea, ammonium sulfate, borax, and trace element supplements are vital for lettuce cultivation. Successful application relies on proper dosage, weather awareness, and soil analysis. By following these guidelines, growers can enhance lettuce quality and yield while maintaining soil health.