1、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.

2、My nitrogen fertilizer dilemma! Is N application before or at planting

There should be wise application of Nitrogenous fertilizers as they are lost through volatilization, leaching and run off water. If Phosphatic fertilizer is complex one with some amount of N,...

3、When to Apply Nitrogen Fertilizer? Timing is Everything

Applying nitrogen fertilizer before planting can provide an initial boost to seedling growth. This method is suitable for crops like corn, which require a large amount of nitrogen during the early growth stages.

4、Optimizing nitrogen application depth can improve crop yield and

In agricultural production practice, many farmers apply nitrogen fertilizer directly to the top soil and then rotate it once with a rototiller to a depth of about 5 cm (Wu et al., 2022a, Wu et al., 2022b).

5、Why do farmers apply nitrogenbased fertilizers to their fields

Farmers apply nitrogen-based fertilizers to their fields for several reasons: Enhanced Plant Growth: Nitrogen is a vital nutrient for plants as it is a major component of amino acids, proteins, and chlorophyll. Nitrogen deficiency can lead to stunted growth and yellowing of leaves.

Why Does Fertilizer Contain Nitrogen

Fertilizers, especially nitrogen-rich types like ammonium nitrate, help increase crop yields and enhance soil health by supplying necessary nitrogen, particularly during the growth phase.

A Comprehensive Guide to Nitrogen Fertilizer

Over time, nitrogen changes into different chemical forms that plants and animals can use. That is why farming used to be much less efficient before fertilizers helped speed up the process. It takes a while for organic matter to decompose and for the nitrogen cycle to replenish itself.

Towards precise nitrogen fertilizer management for sustainable agriculture

Before the advent of synthetic nitrogen (N) fertilizers, crop production largely depended on natural N sources, including soil N mineralization, organic matter decomposition, atmospheric deposition, and biological N fixation.

When To Apply Liquid Nitrogen Fertilizer

Apply nitrogen fertilizer 2-4 weeks before planting to ensure proper soil incorporation and microbial breakdown. Additionally, at planting, a small starter amount of nitrogen should be applied.

Understanding Nitrogen Fertilizers for Garden Use

This article delves into what nitrogen fertilizers are, why they are important, different types available for garden use, how to apply them correctly, and some best practices to maximize their benefits while minimizing environmental impact.

The use of nitrogen fertilizer after crop emergence should follow these principles:

1. Critical Growth Stages: During the early growth stages, such as the seedling and jointing periods, nitrogen fertilizer is essential. Plants have the highest demand for nitrogen at this stage, requiring appropriate application. Excessive use, can lead to rapid, weak growth with shallow roots, reduced lodging resistance, and increased vulnerability to pests and diseases.

2. Late Growth Stages: During flowering and maturation, nitrogen needs decrease. Plants absorb nitrogen less efficiently, and overapplication wastes resources, causes soil acidification, and disrupts nutrient balance.

3. Soil and Crop Tailoring: Application rates should align with soil fertility and crop requirements. Generally, 5–10 kg of urea, 10–15 kg of ammonium sulfate, or 10–20 kg of ammonium chloride per mu (0.067 hectare) meets most crops’ needs.

4. Crop-Specific Adjustments: For crops like corn or soybeans, adjust nitrogen based on growth phases. Corn requires more nitrogen during jointing and tasseling, while soybeans need less during flowering.

5. Environmental Protection: Prevent nitrogen loss and pollution by incorporating organic matter, deep tillage, or avoiding surface spreading. This reduces reliance on synthetic fertilizers and minimizes runoff.

6. Balanced Fertilization: Combine nitrogen with phosphorus, potassium, and other nutrients as needed. This enhances disease resistance, yields, and soil health.

7. Monitor Growth and Soil: Regularly assess crops and soil. If growth abnormalities or declining soil fertility occur, adjust fertilization strategies promptly.

8. Avoid Overapplication: Excessive nitrogen causes soil acidification, salinization, and nutrient imbalances, harming crops and yields. Strictly control dosages to prevent this.

Nitrogen fertilizer can be used post-emergence, but must be applied judiciously. Key considerations include dosage control, environmental protection, balanced nutrient use, and responsive adjustments based on crop and soil conditions. Scientific fertilization boosts yields, improves quality, and supports sustainable agriculture.