1、Excessive use of nitrogenous fertilizers: an unawareness causing

Although nitrogen fertilizer contributes substantially to yield enhancement, but excessive use of this manure has posed serious threats to environment and human health.

2、Multi

In this study, rhizosphere microbial metagenomic sequencing was employed to analyze the underlying causes of low N fertilizer use efficiency, heightened greenhouse gas emissions, and increased susceptibility to potato disease resulting from excessive N fertilizer application during potato production.

3、Response of Nitrogen Losses to Excessive Nitrogen Fertilizer

We conducted a meta-analysis using 1174 paired observations from 69 publications on the effects of nitrogen fertilizer application and reducing nitrogen fertilizer application on the nitrogen losses on a broad scale.

4、Over

Excessive and unchecked use of fertilizers, known as overfertilization, has emerged as a grave concern for both the environment and human health. This article discusses about the negative impacts of overfertilization and explore potential solutions to mitigate its effects.

Environmental Consequences of Excessive Nitrogen Fertilizer Application

Nitrogen (N), phosphorus (P) and potassium (K) are the three major plant nutrients commonly applied through fertilizers by farmers neglecting the secondary and micronutrients.

Soil Acidification caused by excessive application of nitrogen

Among the complex soil chemical factors, the increase in available nitrogen (AN) caused by excessive application of nitrogen fertilizer and the accumulation of phenolic acids were the main driving factors for the decrease in the soil pH value.

Excessive use of nitrogenous fertilizers: an unawareness causing

Although nitrogen fertilizer contributes substantially to yield enhancement, but excessive use of this manure has posed serious threats to environment and human health.

Nitrogen Fertilization I: Impact on Crop, Soil, and Environment

Long-term application of ammonia-based N fertilizers, such as urea, has increased soil acidity which rendered to soil infertility where crops fail to respond with further application of N fertilizers.

Fate of nitrogen in agriculture and environment: agronomic, eco

Excessive and inefficient use of N fertilizer results in enhanced crop production costs and atmospheric pollution. Atmospheric nitrogen (71%) in the molecular form is not available for the plants.

Nitrogenous fertilizers: impact on environment sustainability

However, the excessive use of chemical nitrogenous fertilizers has a negative impact on all the segments of the environment, namely soil, water, and air. Environment sustainability is at risk because of the loss of biodiversity in soil and water due to nitrogen pollution.

The impact of excessive nitrogen fertilizer application on crop growth is multifaceted, primarily encompassing the following aspects:

1. Disrupting Plant Nutritional Balance. Nitrogen is one of the essential macronutrients for plant growth. excessive application leads to deficiencies in other nutrients such as potassium, phosphorus, and calcium, thereby disrupting the plant's nutritional equilibrium and hindering normal development.

2. Causing Soil Acidification. The decomposition of nitrogen fertilizers in soil produces substantial acidic substances, reducing the soil's pH value and leading to acidification. This acidification impairs the plant's ability to absorb and utilize nutrients, subsequently affecting crop growth.

3. Increasing Pest and Disease Incidences. Overapplication accelerates plant growth, resulting in lush stems and leaves that attract pests and diseases. Additionally, excessive nitrogen accumulation within plants can cause nitrate toxicity, further exacerbating susceptibility to pests and diseases.

4. Reducing Crop Yield and Quality. Imbalanced nutrition due to over-fertilization restricts crop growth, compromising both yield and quality. excessive nitrogen leads to increased protein content while decreasing structural components like cellulose and starch, deteriorating crop quality.

5. Environmental Pollution. Excessive nitrogen runoff contaminates water bodies, causing eutrophication that disrupts aquatic ecosystems. Residual nitrogen in soil also poses a threat to groundwater resources.

6. Waste of Resources. Overapplication results in the inefficient use of chemical fertilizers, escalating agricultural costs and exacerbating environmental burdens.

To address these issues, the following measures can be implemented:

1. Rational Fertilization. Determine appropriate fertilizer amounts and timing based on crop growth stages, soil fertility, and climatic conditions to prevent overuse.

2. Organic Fertilizer Substitution. Promote organic fertilizers like farm manure and green manure to enhance soil structure and fertility.

3. Biological Control. Employ biological pest control methods, such as introducing natural predators or beneficial microorganisms, to reduce pest and disease occurrences.

4. Water-Saving Irrigation. Utilize drip irrigation or sprinkler systems to minimize nitrogen loss and environmental pollution.

5. Resource Recycling. Recover and reprocess discarded nitrogen fertilizers to achieve circular resource utilization.

the adverse effects of excessive nitrogen fertilization on crop growth necessitate mitigation through rational fertilization practices and comprehensive management strategies, ultimately fostering sustainable agricultural development.