1、Negative impacts of excessive nitrogen fertilization on the abundance

Abstract Excessive nitrogen (N) fertilization (ENF) and low utilization efficiency of fertilizer-derived N in high-input, high-yield cropping systems are serious ecological and economic problems in China.

2、Can Corn Get Too Much Nitrogen?

Using a nitrogen stabilizer will help keep more nitrogen available in the corn’s root zone during key growth stages, leading to better yield potential. And by using a stabilizer as an insurance policy instead of continuing to apply more fertilizer, you also can avoid over-applying nitrogen.

3、Impact of nitrogen fertilizer sustainability on corn crop yield: the

Background Considering the challenges posed by nitrogen (N) pollution and its impact on food security and sustainability, it is crucial to develop management techniques that optimize N fertilization in croplands. Our research intended to explore the potential benefits of co-inoculation with Azospirillum brasilense and Bacillus subtilis combined with N application rates on corn plants. The ...

4、The Effects of Late

The Efects of Late-season Nitrogen Applications in Corn In recent years, high-clearance fertilizer application equipment has become more widely available. Such tools make it feasible to apply nitrogen (N) fertilizer to corn later in the growing season. This option ofers corn growers more choices in their N fertilizer program, but what are the potential benefits and risks of late-season N ...

Under‐ or Over‐Application of Nitrogen Impact Corn Yield

Under- or over-application of N fertilizer to corn (Zea mays L.) has adverse economic and environmental consequences. A 5-yr study was conducted to determine the impact of N fertilizer on corn silage yield, quality, soil properties, farm economics, and nitrogen-use efficiency (NUE).

Nitrogen Fertilization of Corn

Nitrogen Fertilization of Corn Nitrogen (N), an element that literally surrounds us, changes in form and chemistry almost continuously and moves from one location to another without our notice.

(PDF) Environmental Consequences of Excessive Nitrogen Fertilizer

However, unbalanced fertilization not only leads to low fertilizer use efficiency, but also has environmental and economic consequences.

Long

Long-term excessive nitrogen (N) application does not increase or even decreases grain yield and N use efficiency (NUE) of maize, in which the roles of root morphological and physiological characteristics are not clear. The goal of this study was to explain the mechanism underlying no increment in grain yield under excessive N application from the perspective of root morpho-physiological ...

Long

Although corn is the most important and nitrogen (N)-fertilized crop, there is a lack of long-term data on the effects of organic and inorganic N fertilizers on the N balance and losses for corn systems under different tillage approaches. From 2012 to 2023, we assessed the effects of the N source on the grain yields from cultivated continuous corn receiving irrigation at a site with minimal ...

Impact of nitrogen fertilizer sustainability on corn crop yield: the

Abstract Background: Considering the challenges posed by nitrogen (N) pollution and its impact on food security and sustainability, it is crucial to develop management techniques that optimize N fertilization in croplands. Our research intended to explore the potential benefits of co-inoculation with Azospirillum brasilense and Bacillus subtilis combined with N application rates on corn plants ...

In agricultural production, rational application of nitrogen fertilizer is one of the keys to improving corn yields. excessive use of nitrogen fertilizer not only leads to resource waste but may also cause severe environmental pollution and even adverse effects on human health. understanding the potential consequences of over-applying nitrogen fertilizer in corn cultivation is crucial for achieving sustainable agricultural development. Below is a detailed analysis of the possible impacts:

1. Soil Structure Degradation

Excessive nitrogen fertilization results in an overabundance of nitrogen in the soil, while other essential nutrients like phosphorus and potassium become relatively deficient. This nutrient imbalance disrupts soil granulation, causing the soil to become loose, reduced in air permeability, and compromised in water retention. Over time, the physical properties of the soil deteriorate, leading to compaction and hardening, which severely hinders root growth and nutrient uptake. Additionally, excessive nitrogen use can accelerate soil acidification, further exacerbating structural damage.

2. Pest and Disease Proliferation

Over-fertilization with nitrogen promotes rapid plant growth, resulting in excessive nitrogen accumulation within crops. This creates favorable conditions for pests such as aphids and red spiders to thrive, leading to severe infestations. Meanwhile, excessive nitrogen weakens the plants' natural disease resistance, allowing previously manageable pests and diseases to spread uncontrollably.

3. Environmental Pollution

Excessive nitrogen runoff into water bodies fuels eutrophication, a global environmental crisis. High nitrogen levels spur explosive growth of algae and aquatic organisms, depleting dissolved oxygen and triggering algal blooms. In extreme cases, this can cause fish deaths. Nitrogen also enters groundwater and soil through atmospheric deposition, posing long-term risks to ecosystems and human health.

4. Food Security Risks

While excessive nitrogen may boost crop yields, this "productivity" often comes at the cost of land resources and ecological health. Unsustainable farming practices, such as overplowing and improper fertilizer use, accelerate soil degradation and quality decline. This undermines food quantity, nutritional value, and stability, while also sparking socioeconomic issues like reduced farmer incomes and rural labor migration.

5. Water Resource Depletion

Nitrogen-driven eutrophication disrupts aquatic ecosystems, leading to algal dominance, hypoxia, and potential ecological collapse. Such changes threaten fisheries and drinking water safety. excessive nitrogen use can elevate groundwater tables, intensifying water scarcity issues.

Excessive nitrogen fertilization harms corn production, soil health, food safety, and water resources. To ensure sustainable agriculture, it is imperative to strictly regulate nitrogen usage and adopt scientific fertilization practices.