1、Watermelon Fertilizer Schedule PDF & Nutritioanl

For potassium needs, Haifa recommends potassium nitrate (Multi-K™), an efficient, chloride-free source of both potassium and nitrate-nitrogen. Multi-K™ offers superior nutritional value, application efficiency, and plant uptake.

2、Estimation of Watermelon Nutrient Requirements Based on the

Estimating balanced nutrient requirements for a watermelon plantation is essential to increase its fruit yield and nutrient use efficiency. This is vital for China, which produces 60% of world’s watermelons with excessive fertilizer application.

3、Watermelon Fertilizer Schedule: Fertilization Based on Growth Stages

One crucial aspect of Watermelon cultivation is adjusting fertilization based on the different growth stages of the plants. As Watermelons progress from seedlings to mature fruit-bearing plants, their nutrient requirements change.

4、Optimal Fertilizer Application Rates for Fertigation System

Despite of various chemical properties of greenhouse soils producing watermelon, the standard fertigation guideline suggests a method of supplying a uniform amount of fertilizer per week.

Watermelon Fertilizer Management: Application Schedule and Methods

By amending the soil before planting, you can optimize nutrient availability and create an ideal environment for Watermelon plants to thrive. Common soil amendments include organic matter like compost or well-rotted manure.

Optimal Timing for Nitrogen Fertilization in Watermelon Cultivation

Watermelons require ample potassium and phosphorus for optimal melon production. How to Apply High When fertilizing watermelon plants, use nitrogen based fertilizer at the onset. Once the plant begins flowering, however, switch to feeding the watermelon a phosphorus and potassium based fertilizer.

(PDF) Potassium application via fertigation increases productivity and

Fertilization with 50% of K2O recommendation can be used in the cultivation of mini-watermelon without losses in yield.

Nutritional Recommendations for Watermelon in Open Field

Haifa’s NutrigationTM programs supply the exact nutrient quantities required for optimal watermelon growth. For potassium needs, Haifa recommends potassium nitrate (Multi-KTM), an eficient, chloride-free source of both potassium and nitrate-nitrogen.

Optimal water and fertilizer amount for balancing greenhouse melon

The optimal irrigation and fertilization application intervals were obtained while taking into account dynamic growth, fruiting and soil ecology.

Watermelon Fertilizer Schedule: Fertilization Based on Growth Stages

Balanced Fertilization: Combine nitrogen (N), phosphorus (P), and potassium (K) according to watermelon growth stages and soil tests. Avoid over-fertilization or nutrient deficiencies, which can harm growth and quality.

Applying potassium fertilizer appropriately is crucial for improving watermelon quality and yield. Potassium participates in multiple metabolic processes within plants, such as energy conversion, enzyme activity regulation, and cell wall construction, significantly impacting watermelon growth and development. Below is a detailed guide on the best timing for potassium application, along with recommendations and precautions to help growers optimize soil and crop management.

I. Timing of Fertilization

1. Before Sowing: Applying potassium fertilizer 20–30 days prior to sowing promotes seed germination and root development, providing essential nutrients for seedlings. Soil temperature during this period should be optimal for nutrient absorption.

2. During the Growth Stage:

   • Flowering and Early Fruiting: Apply potassium during flowering and initial fruit set to enhance pollination and fruit development.
   • Fruit Enlargement Phase: Continue potassium application during rapid fruit expansion to improve sugar content and overall quality.

3. Before Harvest: Approximately one month prior to maturity, potassium application strengthens disease resistance, increases fruit firmness, and extends shelf life, reducing post-harvest losses.

II. Fertilization Methods and Techniques

1. Base Fertilization: Mix potassium fertilizer with organic materials (e.g., chicken or cow manure) and evenly distribute during land preparation. This ensures slow, sustained nutrient release throughout the growth cycle.

2. Topdressing: Apply additional potassium during the growth period based on plant conditions and soil tests. Avoid overapplication to prevent root burn or salt buildup.

3. Foliar Spraying: For potassium-demanding varieties, apply liquid potash solutions via foliar spraying. Follow product guidelines for dilution and frequency.

III. Precautions

1. Soil Conditions: Adjust potassium types based on soil pH. Acidic soils may fix potassium, while alkaline soils risk leaching. Test soil to tailor applications.

2. Crop Varieties: High-sugar watermelon varieties often require more potassium. Customize fertilization rates according to specific cultivar needs.

3. Environmental Factors: Extreme weather (e.g., drought, heat) can reduce potassium uptake. Modify fertilization schedules to mitigate risks under adverse conditions.

Timely and balanced potassium application is key to maximizing watermelon yields and quality. By aligning fertilization practices with growth stages, soil properties, and environmental conditions, growers can achieve robust crop health and productive harvests.