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

Foliar fertilizer application after soil fertilization is an effective method to increase the contents of trace elements in crops and crop yield, and to improve the soil environment. However, the application of inorganic foliar fertilizer results in difficulties in nutrient absorption and migration in plants.

2、Effect of post

In ‘Trebbiano Romagnolo’ grapevines basal bud fertility is usually low and can be related to bud N status. The aim of the present investigation was to evaluate the effect of foliar N application on bud fertility in a mature vineyard subjected to two levels of soil N (39 and 78 kg N ha −1) fertility induced by application of urea.

3、The Dos and Don’ts of Foliar feeding

Foliar feeding is linked to higher yields and improved fruit quality, but it comes with a warning. Used in both vegetative and flowering stages by many growers, foliar feeding involves spraying water-dissolved formulas directly onto plant leaves.

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

Foliar fertilizer application after soil fertilization is an effective method to increase the contents of trace elements in crops and crop yield, and to improve the soil environment. However, the application of inorganic foliar fertilizer results in difficulties in nutrient absorption and migration in plants.

Why I Typically Do Not Recommend Foliar Fertilization

Foliar fertilization (the delivery of plant nutrients via sprays applied to leaves) is one of those topics that I find tricky to quickly explain why I don’t think the bang is worth the buck for most growers.

Foliar nutrition: Potential and challenges under multifaceted

Foliar fertilization has been well recognized for two decades to affect crop productivity, however, the consequences of foliar spray under multiple environmental stresses remains elusive, albeit evidence to resilience agriculture has grown widely.

Foliar nitrogen and phosphorus fertilization

Foliar fertilization is more demanding with respect to technical knowledge and management skills than is the conventional use of solid fertilizers. If not carried out appropriately, foliar fertilization with nitrogen or phosphorus will imply a considerable risk of causing negative yield responses.

(PDF) Foliar Fertilization of Crop Plants

If foliar fertilization is mixed with postemergence herbicides, insecticides, or fungicides, the probability of yield response could be increased and cost of application can be reduced.

Microsoft PowerPoint

Deficiencies can then be rectified on a timely basis with soil or foliar application of the relevant nutrient. 3⁄4 application of foliar sprays of one or more mineral nutrients to plants to supplement traditional soil applications of fertilizers.

Foliar Fertilization of Nutrients

Foliar applications should be provided when needed nutrients during the yield potential determining time frame of plant development, which will in turn positively influence the post-reproductive development stages.

The bud stage is a critical period in plant growth when nutrient demands are exceptionally high. the application of foliar fertilizer is often overlooked, primarily due to a lack of understanding of its effects and underlying reasons. Below, I will explain in detail why foliar fertilization should not be applied during the bud stage.

1. Mechanism of Foliar Fertilizers: Foliar fertilizers are absorbed through leaves and transported to various parts of the plant, providing essential nutrients such as nitrogen, phosphorus, and potassium. Their main functions include supplementing nutrient deficiencies, accelerating growth, increasing yield, improving quality, and enhancing disease resistance.

2. Relationship Between Foliar Fertilizers and Root Systems: While foliar fertilizers deliver nutrients via leaves, roots remain the primary organs for water and nutrient absorption. Excessive use of foliar fertilizers may disrupt root function, reducing their ability to absorb water and nutrients, which can hinder normal plant growth. Additionally, overapplication may lead to "root burning," further stunting development.

3. Impact on Buds: Buds are reproductive organs responsible for producing offspring. During this stage, plants require substantial nutrients. Applying foliar fertilizers might divert nutrients away from buds, compromising their formation and development. Certain components in foliar fertilizers, such as hormone-like substances, could also interfere with the natural development of buds.

4. Timing of Application: Foliar fertilizers are most effective during early growth stages or periods of rapid development, when nutrient demands are higher. By the bud stage, nutrient needs are typically already met, making foliar applications less beneficial.

5. Dosage Considerations: The amount of foliar fertilizer should be tailored to the plant’s specific needs. Excessive use not only wastes resources but may also harm the plant. Careful dosage control is critical to avoid overapplication.

6. Complementary Role of Other Fertilizers: Foliar fertilizers cannot replace other essential fertilizers, such as organic or inorganic options. A balanced approach that combines foliar applications with other nutrient sources is necessary to meet the plant’s diverse requirements.

There are several reasons to avoid foliar fertilization during the bud stage:

• Foliar fertilizers may disrupt bud development.
• They can interfere with root function by competing for nutrient uptake.
• Timing and dosage must be strictly controlled.
• Foliar fertilizers alone cannot substitute for other fertilizer types.

To ensure healthy plant growth, it is essential to follow scientific fertilization principles when using foliar products.