1、Exploring the Effects of Nitrogen Fertilization Management and Soil

To assess the impact of fertilizer management and soil factors on the yield and quality of flue-cured tobacco (FCT), a meta-analysis was conducted across 82 peer-reviewed research studies.

2、Frontiers

Applying organic-inorganic fertilizer is a key strategy for boosting tobacco yield and quality. This meta-analysis examines 632 observations from 169 articles to determine the precise influence of organic-inorganic fertilizer on tobacco.

3、The impact of different preceding crops on soil nitrogen structure and

Soil nitrogen content, structure, and nitrogen cycling play a crucial role in tobacco growth quality, with different preceding crops having varying impacts on tobacco cultivation soil.

4、The response of flue

In 2016 and 2017, experiments using different nitrogen fertilizer application rates in flue-cure tobacco were conducted in Yunnan province, and the changes in agronomic, economic and chemical indices as well as in residual soil nitrogen were compared.

Bio

Organic substitutes reduced nitrous oxide emissions compared to synthetic fertilizer. Commercial-&bio-organic substitutions reduced carbon footprint but farm-manure not.

The Effects of Cultivating Tobacco and Supplying Nitrogenous

Based on the findings of this study, further research must be conducted to investigate the effects of tobacco cultivation on soil health and fertility beyond considering only soil pH, SOC, micronutrients, and macronutrients.

Effects of Nitrogen Fertilizer Reduction on Growth and Nitrogen Use

Result An appropriate amount of nitrogen fertilizer reduction could shorten the growth period of flue-cured tobacco, and significantly increased the plant height, effective leaf number and maximum leaf width.

Effects of irrigation, nitrogen forms and topping on sun cured tobacco

In the present study, effects of irrigation, N forms and topping stages on agronomic and chemical characteristics of oriental tobacco (Nicotiana tabacum L. cv. Xanthi 81) were evaluated.

Exploring the Effects of Nitrogen Fertilization Management and Soil

To assess the impact of fertilizer management and soil factors on the yield and quality of flue-cured tobacco (FCT), a meta-analysis was conducted across 82 peer-reviewed research studies.

Fertility – Nutrients

Nitrogen has a greater effect on tobacco yield and quality than any other nutrient. Too little nitrogen reduces yield and results in pale, slick cured leaf. Too much nitrogen may increase yield slightly but may also make mechanical harvesting and curing more difficult, delay maturity, extend curing time, and result in more unripe cured ...

Tobacco is an important cash crop, and the use of nitrogen fertilizer plays a crucial role in its cultivation. research indicates that tobacco's preference for nitrogen fertilizer is relatively low, potentially due to multiple factors. This article analyzes the reasons behind tobacco's aversion to nitrogen fertilizer and explores strategies to address this issue.

I. Why Does Tobacco Dislike Nitrogen Fertilizer?

1. Soil pH Impact: Tobacco is highly sensitive to soil acidity. In acidic soils, its growth rate and yield may be compromised because tobacco's response to nitrogen fertilizer is less effective compared to neutral or slightly alkaline soils. Thus, tobacco may exhibit reduced affinity for nitrogen fertilizer in acidic conditions.

2. Nutrient Uptake Constraints: Tobacco's capacity to absorb nitrogen is limited. Excessive nitrogen fertilizer can accelerate plant growth but may inhibit the absorption of other essential nutrients like phosphorus and potassium, harming its healthy development and productivity.

3. Low Nitrogen Use Efficiency: After application, most nitrogen fertilizer becomes immobilized in the soil, remaining unavailable for direct plant uptake. This reduces the effectiveness of nitrogen fertilizer and limits tobacco's utilization efficiency.

4. Environmental Factors: Nitrogen fertilizer use may also be influenced by environmental constraints. For instance, overuse can lead to water eutrophication, damaging water quality and ecological balance. Additionally, nitrogen application can alter soil microbial activity, destabilizing soil ecosystems.

II. How to Address Tobacco’s Dislike for Nitrogen Fertilizer?

1. Adjust Soil pH: Improve soil pH by applying lime or other alkaline materials to create a more suitable environment for tobacco growth.

2. Optimize Fertilization Plans: Tailor the ratio and dosage of nitrogen, phosphorus, and potassium fertilizers according to tobacco's growth stages and nutritional needs, avoiding excessive nitrogen application.

3. Enhance Nitrogen Use Efficiency: Utilize slow-release or water-soluble nitrogen fertilizers to minimize losses and waste, improving nitrogen absorption rates.

4. Strengthen Soil Management: Conduct regular soil tests and amendments to maintain soil structure and function, ensuring adequate nutrient supply and optimal growth conditions.

5. Select Locally Adapted Varieties: Choose tobacco varieties suited to regional climates and soil properties to improve nitrogen utilization efficiency.

6. Implement Biological Control Measures: Reduce reliance on nitrogen fertilizers through biological pest control methods, such as introducing natural predators or pathogens, promoting sustainable agriculture.

7. Advance Scientific Research: Enhance studies on tobacco's physiological responses to nitrogen fertilizer to determine optimal application conditions and provide scientific guidance for agricultural practices.

8. Promote Green Agricultural Practices: Encourage organic fertilizers over chemical ones to reduce synthetic fertilizer use and protect ecosystems.

9. Train Farmers: Improve farmers' understanding of tobacco growth habits and fertilization techniques through training, fostering scientific and rational fertilization practices.

10. Establish Monitoring Systems: Develop robust monitoring frameworks to track soil fertility and nitrogen usage, informing data-driven fertilization decisions.

tobacco's aversion to nitrogen fertilizer stems from multiple factors. To mitigate this, comprehensive measures are needed, including soil pH adjustment, optimized fertilization, improved nitrogen efficiency, and strengthened soil management. By addressing these aspects, we can enhance tobacco's nitrogen utilization, promote healthy growth, and increase yields.