1、Seasonal Guide to Nitrogen Fertilizer Application

This article provides a comprehensive seasonal guide to nitrogen fertilizer application, exploring the best practices for each stage of the growing season to maximize efficiency and sustainability.

2、Nitrogen redistribution during the grain

In this study, a field experiment was conducted using the winter wheat cultivar ‘Xinong 511’ under two nitrogen fertilizer treatments: regular nitrogen supply (240 kg ha -1 [N 240]) and no nitrogen supply (0 kg ha -1 [N 0]).

3、Watermelon Fertilizer Management: Application Schedule and Methods

During this stage, regular applications of fertilizer for Watermelon can help support healthy foliage growth, strong root development, and increased fruit production.

4、When to Apply Nitrogen Fertilizer for Best Plant Growth

In this guide, we’ll explore the best time to apply nitrogen fertilizer based on planting stages, crop needs, seasonal patterns, and climate conditions—while also highlighting how to avoid common mistakes like nutrient leaching or volatilization.

5、Effects of Nitrogen Application Strategies on Yield, Nitrogen Uptake

In this study, a field plot trial with five N fertilization application strategies was conducted in the maize field from 2021 to 2022 in the Ningxia Yellow Irrigation District, Northwest China.

How to Apply Nitrogen Fertilizer for Maximum Growth & Efficiency

Learn how to apply nitrogen fertilizer properly to boost growth, reduce waste, and protect the environment. Easy expert tips for gardeners and farmers.

The Right Fertilizer Program during Flowering and Fruit Set is

Up to one third of all female flowers can be lost due to over application of nitrogen at flowering, leading to significant reductions in fruit set. Nitrogen form is particularly important during vining, flowering, and fruit set.

Nitrogen Fertilizers: Types, Benefits, And Application Tips

Nitrogen fertilizer is a nitrogen-rich substance, either solid or liquid, widely used in agriculture to promote crop growth and unlock higher yields. Nitrogen (N) is a common component of fertilizers because it is essential for all plants to produce energy in their cells.

Effects of water and nitrogen coupling on watermelon growth

These results suggest for the expected future higher CO 2 concentrations, greenhouse watermelon production should reduce application of nitrogen fertilizers to save resources, but maintain full irrigation.

When and How to Apply Nitrogen Fertilizer

In this article, we will explore when and how to apply nitrogen fertilizer for various crops, considering soil conditions, climate, crop type, and best management practices. Nitrogen (N) is a primary macronutrient that plants need in large quantities.

Watermelon is a fertilizer-demanding crop that requires significant amounts of nutrients such as nitrogen (N), phosphorus (P), and potassium (K). Applying nitrate nitrogen fertilizer during the mid-growth stage of watermelon is a critical practice to enhance yield and fruit quality. Below are detailed guidelines for applying nitrate nitrogen fertilizer during this period:

I. Preparation Before Application

1. Understand the Growth Cycle of Watermelon Watermelon undergoes multiple growth stages from sowing to maturity, with varying fertilizer requirements. During the mid-growth stage, nitrogen is essential for promoting plant growth and fruit development.
2. Determine Planting Density and Soil Conditions Adjust watermelon planting density based on local climate, soil fertility, and other factors to ensure adequate nutrient supply. Analyze soil texture, pH, and other properties to select appropriate fertilizers.
3. Choose Suitable Nitrate Nitrogen Fertilizers Select nitrate nitrogen fertilizers (e.g., urea, potassium nitrate) based on watermelon nutrient needs and soil conditions. Follow recommended dosages for optimal results.

II. Timing of Application

1. Mid-Growth Stage Begin applying nitrate nitrogen fertilizer when watermelon plants have 5–6 true leaves. This stage coincides with peak nitrogen demand, supporting robust growth and fruit formation.
2. Adjust Based on Weather Apply earlier under sunny, mild conditions but delay application during drought or low temperatures to avoid stress.

III. Application Methods

1. Use Water-Soluble Fertilizers Nitrate nitrogen fertilizers dissolve easily in water, making them suitable for fertigation. Dilute water-soluble fertilizers according to manufacturer instructions.
2. Apply via Drip or Sprinkler Irrigation Deliver fertilizer solutions directly to plant roots using drip or sprinkler systems to maximize efficiency and minimize nutrient loss.
3. Control Dosage and Concentration Adjust application rates (typically 5–10 kg/mu) based on watermelon variety, soil type, and weather. Excessive concentrations may harm plants.
4. Sequential Application Combine nitrate nitrogen fertilizers with organic fertilizers for deep application first, followed by shallow topdressing to enhance nutrient uptake and reduce loss.

IV. Key Considerations

1. Avoid Overapplication Excess nitrogen can lead to excessive vegetative growth, reducing fruit quality and taste. Use precise dosages.
2. Balance with Other Nutrients Supplement with phosphorus, potassium, and micronutrients as needed. Tailor fertilizer combinations to soil tests and growth stages.
3. Maintain Soil Moisture Ensure soil is moist before application to prevent nutrient runoff. Monitor humidity and irrigate as necessary.
4. Integrated Pest Management Strengthen disease and pest control to safeguard plant health during fertilization.

applying nitrate nitrogen fertilizer during the mid-growth stage of watermelon is crucial for improving yield and quality. Careful preparation, timely application, proper methods, and attention to detail will optimize fertilization outcomes.