1、Localized nitrogen management strategies can halve fertilizer use in

Here we analyse N flows using a localized N management model for wheat, maize and rice in 1,690 Chinese counties, with a breakdown of multiple reactive N (Nr) loss pathways.

2、Crop responses to nitrogen overfertilization: A review

High nitrogen fertilization rates are detrimental for crop yield. Several quality parameters in fruits and vegetables are negatively affected. Law enforcement is restricting the content of N in certain vegetables.

3、Frontiers

Excessive nitrogen fertilization in sweet potato cultivation poses significant ecological and economic challenges in China, negatively impacting soil health by altering microbial community diversity, enzyme activities, and increasing the risk of stem nematode damage.

4、Long

Long-term excessive nitrogen (N) application neither increases nor enhances grain yield and N use efficiency (NUE) of maize, yet the mechanisms involving root morphological and physiological characteristics remain unclear.

5、Higher yield with less nitrogen fertilizer

To increase crop yield, N fertilizer is applied, often at rates far greater than the rates at which crops can consume, resulting in a surplus of N in soils that consequently leads to...

(PDF) Positive and Negative Impact of Nitrogen Fertilizer on Soil

Our study was conducted over the period of two years and explored the impact of nitrogen fertilization and non-fertilization systems on soil health indicators and crop yield.

Excessive Nitrogen Fertilizer Application Causes Rapid Degradation of

Due to low nitrogen (N) use efficiency, excessive nutrients are accumulated in soil profile. As a result, greenhouse soil is often compromised by the secondary soil salinization.

Nitrogen fertilization and stress factors drive shifts in microbial

Another detrimental effect of crop N-fertilization is related to defense and stress tolerance making plants more susceptible to pests and pathogens and limiting crop productivity (Arif et al. 2020).

Negative impacts of excessive nitrogen fertilization on the abundance

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.

Enhancing nitrogen use efficiency in agriculture by integrating

For example, precision agriculture techniques can be used to manage nitrogen application in real-time, while genetically enhanced crops can make the most efficient use of the applied nitrogen.

In agricultural production, rational nitrogen fertilization is one of the key factors for improving crop yields. not all crops are suitable for excessive nitrogen application. Below is a list of crops that can tolerate higher nitrogen levels, along with detailed explanations:

1. Corn (Zea mays): As a high-yield crop, corn has a significant demand for nitrogen. Excessive nitrogen can boost yield and quality, but it may also cause excessive stalk elongation, reduced stem strength, and lower lodging resistance. nitrogen usage should be controlled during corn growth.

2. Rice (Oryza sativa): Rice, a staple food crop, requires substantial nitrogen. Overapplication leads to excessive tillering, reduced panicle size, and lower grain weight, negatively impacting yield and quality. Nitrogen levels must be carefully managed during rice cultivation.

3. Wheat (Triticum aestivum): Wheat, another major grain crop, demands high nitrogen. Excessive nitrogen causes excessive straw growth, reduced tillering, and lower grain weight, harming both yield and quality. Nitrogen application should be optimized during wheat growth.

4. Soybean (Glycine max): Soybean, an important economic crop, requires substantial nitrogen. Overfertilization results in excessive vegetation, reduced branching, and poor seed development, compromising yield and quality. Nitrogen use should be moderated during soybean growth.

5. Potato (Solanum tuberosum): Potatoes, dual-purpose as food and vegetable crops, need high nitrogen. Excessive application leads to vigorous but weak growth, smaller tubers, and reduced yield/quality. Nitrogen intake must be controlled during potato cultivation.

6. Cotton (Gossypium hirsutum): Cotton, a critical cash crop, demands significant nitrogen. Overuse causes excessive plant height, excessive branching, and lighter cotton bolls, reducing yield and fiber quality. Nitrogen levels should be adjusted carefully.

7. Peanut (Arachis hypogaea): Peanuts, valued for oil and protein, require high nitrogen. Excessive nitrogen leads to overgrowth, thinner shells, and lower kernel quality. Nitrogen application should be limited during peanut growth.

8. Tobacco (Nicotiana tabacum): Tobacco, an economically vital crop, needs abundant nitrogen. Overfertilization causes excessive plant height, excessive branching, and smaller leaves, affecting yield and leaf quality. Nitrogen use must be regulated.

9. Rapeseed (Brassica napus): Rapeseed, a major oil crop, demands high nitrogen. Excessive application results in tall, spindly plants, smaller seeds, and reduced oil quality. Nitrogen should be applied judiciously during rapeseed growth.

10. Sugar Beet (Beta vulgaris): Sugar beets, essential for sugar production, require substantial nitrogen. Overuse leads to excessive foliage, reduced sugar content, and smaller roots. Nitrogen management is critical during sugar beet cultivation.

In agriculture, nitrogen application must align with the specific growth traits and needs of each crop. Excessive nitrogen not only reduces yield and quality but also harms the environment. Farmers should scientifically apply nitrogen based on soil fertility and crop requirements to achieve sustainable productivity and efficiency.