1、Timing of Foliar Calcium Sprays Improves Fruit Firmness and

The factors and their interactions that can affect Ca uptake and distribution in the plant are so complex that an integrated management approach is needed to ensure adequate fruit Ca levels. In this context, foliar Ca sprays onto the plant canopy can improve fruit Ca status (Manganaris et al. 2005).

2、Effects of Foliar Fertilizers on Wild Blueberry Physiology and Pest

Physiologically, blueberry has a waxy leaf cuticle, making foliar fertilizer sprays ineffective when specific nutrients are applied or environmental conditions are unfavorable (Hart et al. 2006; Wach & Błazewicz-Woźniak 2012).

3、What Is a Good Fertilizer for Blueberry Bushes? Secrets To Success

Liquid fertilizers are readily absorbed by plants and can be applied through foliar sprays or soil drenches. They offer a quick and efficient way to provide a nutrient boost, particularly during periods of rapid growth or stress.

4、Organic Spray Guide for Blueberry Farms

For one acre, the granular fertilizers are about $550 per acre per year and the foliar sprays are about $350 per acre per year. So under this organic schedule you can expect to pay around $900 dollars a year.

The Best Time and Methods To Fertilize Blueberry Bushes For Huge

They can be applied directly to the soil or used as foliar sprays. Liquid fertilizers are particularly useful during the peak growing season when plants need immediate nourishment. Applying liquid fertilizer directly to the leaves can be an effective way to correct nutrient deficiencies quickly.

(PDF) EFFECTS OF ORGANIC AND INORGANIC FOLIAR

Foliar sprays with Insol Fos had a positive effect on the yielding of highbush blueberry, but it had no effect on the weight of 100 fruits. The highest concentration of the fertiliser...

How to Fertilize Blueberries for a Bountiful Harvest

Blueberry plants take up nutrients through their root system, so apply fertilizer to the soil at the base of the plant as a top dressing.

Foliar Application of Some Macronutrients and Micronutrients Improves

Foliar fertilization makes it possible to quickly provide plants with essential nutrients, mainly micronutrients, which can significantly improve the quality of yields.

What Fertilizer Is Good For Blueberries? Boosting Bumper Crops

Foliar Application: Fertilizers are sprayed onto the leaves, providing rapid nutrient uptake and increased fruit production. Integrated Fertilization: A combination of soil and foliar applications, this method ensures optimal nutrient uptake and soil health.

Blueberry Spray Guide for Home Gardeners

Fertilizer– There are three types of Fertilizer that we recommend you can use as a home gardener. The first product is a granular organic product from the Fertrell Company. It is called Berry Mix. It is best to use this in the spring when your blueberry bush is just starting to leaf out.

Blueberries (Vaccinium spp.) are an important economic crop valued for their unique flavor and high nutritional content. In agricultural production, foliar fertilization is a key strategy to complement soil-based fertilization and enhance plant nutrient uptake. As a fruit-bearing plant, blueberries have strong leaf absorption capabilities, making foliar spray applications an effective method to promote growth and improve fruit quality. Below is a detailed guide to foliar fertilization techniques and precautions for blueberries.

I. Importance of Foliar Fertilization

1. Improve Nutrient Use Efficiency: Foliar fertilization delivers nutrients directly to plant leaves, bypassing root competition and absorption limitations, thereby maximizing nutrient utilization.
2. Rapid Nutrient Replenishment: Nutrients in foliar sprays are absorbed quickly, allowing for timely correction of deficiency symptoms and improved plant health.
3. Enhance Stress Resistance: Foliar fertilization regulates hormonal balance, strengthening resistance to cold, drought, and other environmental stresses.

II. Steps for Foliar Fertilization in Blueberries

1. Select Appropriate Fertilizers: Choose foliar fertilizers based on growth stages and nutritional needs. Common options include amino acid-based, alginic acid-based, and microelement-fortified formulas.
2. Dilute the Solution: Mix the foliar fertilizer with water according to product instructions, typically diluting to half the recommended concentration.
3. Optimal Timing: Apply sprays in the morning or evening when stomata are open, facilitating nutrient absorption.
4. Uniform Application: Use a fine mist sprayer or soft brush to ensure even coverage. Avoid over-application to prevent leaf burn.
5. Monitor Results: Observe plant growth and leaf conditions post-application. Adjust strategies if abnormalities arise.

III. Precautions for Foliar Fertilization

1. Avoid High Temperatures: Do not apply during hot weather, as heat accelerates nutrient loss and reduces effectiveness.
2. Safety Measures: Wear masks, gloves, and protective clothing to minimize skin contact with chemicals.
3. Balanced Nutrition: Combine foliar fertilizers with soil-applied nutrients (e.g., phosphorus, potassium) to ensure comprehensive nutrition.
4. Dosage Control: Limit application to 10–15 kg/hectare. Excessive use may lead to overgrowth or phytotoxicity.
5. Soil-Specific Adjustments: Tailor fertilizer types and concentrations to soil conditions, as nutrient requirements may vary.

Foliar fertilization is a highly efficient method to supplement blueberry nutrition and support healthy development. Success depends on adapting strategies to plant growth stages, soil environments, and climate conditions. By prioritizing safety, balanced nutrition, and proper dosage, growers can maximize yields while minimizing risks.