1、The Best Time to Apply Foliar Fertilizer for Watermelon

Foliar spraying of fertilizer is an efficient and eco-friendly method that can rapidly replenish essential nutrients, promoting robust crop development. Below is a detailed guide on the optimal timing and methods for applying foliar fertilizer during different growth stages of watermelon.

2、Melon Growth Optimization Via Fertigation: Exploring Foliar Spray

Abstract or imbalances can negatively affect melon quality, impacting the size, and overall appearance of the fruit. This study evaluated the effects of foliar sprays using AB fertilizer and plant booster, as well as the application of 60 ppm gibberellin on the growth a

3、Intelligent drip fertigation increases water and nutrient use

The topdressing fertilizer used urea (N 46%), monopotassium phosphate (P 2 O 5 52%; K 2O 34%) and potassium sulfate (K2 O 50%). The topdressing fertilizers were applied in punctual irrigations according to the growth stages of watermelon.

Effective Foliar Fertilizers for Watermelon During Early Growth Stages

Applying appropriate foliar fertilizers during the early stages of watermelon growth effectively promotes plant development, improves stress resistance, and boosts fruit quality.

Comparative evaluation of foliar treatments of watermelon plants with

The effectiveness of the use of new foliar fertilizers and growth regulators for vegetative plants of watermelon in dry-steppe conditions of the Volgograd region has been studied.

Watermelon foliar application information – AgriBot

While conventional methods of fertilization are commonly used for enhancing watermelon growth, an emerging technique that is gaining traction is foliar application. This article aims to explore the benefits, techniques, and best practices of foliar application specific to watermelon cultivation.

Recommended fertilization rates based on watermelon yield and

We studied the nutrient requirements of watermelon for different yield levels in different watermelon production areas in China to propose the key technical measures for reducing fertilizer application rate and increasing fertilizer use efficiency.

Effects of foliar fertilizer application on the growth and fruit

Based on measures of fruit quality, Baramee, Melon cat 697, Kissme, and Melon Princess were more responsive to foliar fertilizer application than other melon varieties tested.

Effect of Water

In response to the low fertilizer utilization efficiency in watermelon production in Xinjiang, this study explores the impact of water-soluble compound fertilizer on the physiological...

Effective Use of Leaf

We analyzed the effect of no fertilizer application (CK), PK fertilizer application (PK), and NPK fertilizer application (NPK) on fruit yield of watermelon, DOM chemical structure, nutrient status, and microbial functional diversity in organic substrates cultivated with watermelon.

Foliar fertilization is a critical practice for enhancing yield and quality in cold-frame watermelon production. Selecting the right foliar fertilizers ensures optimal nutrient supplementation and promotes healthy growth. Below are detailed recommendations for foliar fertilization in cold-frame watermelons:

I. Principles for Selecting Foliar Fertilizers

1. Nutrient Composition: Prioritize fertilizers rich in essential macronutrients like nitrogen (N), phosphorus (P), and potassium (K). Nitrogen, in particular, is vital for leaf development and photosynthesis.
2. Micronutrients: Include calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) to improve disease resistance and fruit quality.
3. Safety and Eco-Friendliness: Choose non-toxic, residue-free, and biodegradable products to avoid environmental and human health risks.
4. Growth Stage Compatibility: Tailor fertilizer selection to the watermelon’s developmental stage and soil conditions, as nutritional needs vary throughout growth.

II. Recommended Foliar Fertilizers

1. Algae-Based Fertilizers: These contain polysaccharides and alginic acid, which enhance stress resistance, root development, and micronutrient supply. Suitable for all growth stages, especially under drought or heat stress.
2. Amino Acid-Based Fertilizers: Promote cell division and elongation, boosting vigor during seedling and flowering/fruiting stages.
3. Compound Fertilizers: Commercial blends with balanced nutrients cater to diverse growth-stage needs. Select based on soil type and watermelon variety.

III. Application Methods

1. Dilution Ratio: Follow product guidelines or expert advice. Use clean water to dilute, avoiding contaminants.
2. Timing: Apply in early morning or late afternoon when stomata are open for efficient absorption. Avoid midday heat to prevent leaf burn.
3. Dosage: Adjust based on plant age, health, and soil fertility. Over-application leads to nutrient excess, while under-dosing may cause deficiencies.

IV. Precautions

1. Avoid Over-Fertilization: Excessive use wastes resources and risks root/foliage damage. Stick to recommended doses.
2. Safety Measures: Wear protective gear, avoid direct skin/eye contact, and ensure ventilation during application.
3. Monitor Plant Response: Observe for signs of over-fertilization (e.g., yellowing leaves, stunted growth) and adjust strategies promptly.

V. Integrated Management

1. Water Management: Maintain consistent soil moisture to aid nutrient uptake. Irrigate based on weather and soil humidity.
2. Pest/Disease Control: Remove infected plants, use eco-friendly pesticides, and prevent contamination post-fertilization.
3. Pruning and Training: Trim weak branches to improve airflow and light penetration, enhancing photosynthesis and fruit quality.

strategic foliar fertilization combined with scientific management practices significantly improves cold-frame watermelon yield and quality. Tailor fertilizer choices to growth stages, soil conditions, and market demands for optimal results.