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Updated: Mar 24, 2026
08:44
Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis
Published on: May 10, 2020
7.4K
[Response of lettuce to different nitrogen forms].
Xiaohong Tian1, Shengxiu Li, Zhaohui Wang
1Department of Resources and Environmental Sciences, Northwest Sci-tech University of Agriculture and Forestry, Yangling, Shaanxi 712100, China. txhong@hotmail.com
Summary
Nitrate nitrogen is the best nitrogen source for lettuce growth, while ammonium nitrogen inhibits development. Lettuce absorbs more ammonium, but it is not suitable for their metabolism, impacting overall plant health.
Area of Science:
- Plant Physiology
- Agricultural Science
Context:
- Understanding nitrogen form influence is crucial for optimizing crop nutrition.
- Lettuce (Lactuca sativa) growth is sensitive to nitrogen availability and form.
Purpose:
- To investigate the impact of different nitrogen forms on lettuce growth, development, and nutritional characteristics.
- To determine the optimal nitrogen source for lettuce cultivation.
Summary:
- Lettuce growth and nitrogen uptake were highest with nitrate nitrogen (NO3(-)-N).
- Ammonium nitrogen (NH4(+)-N) alone or in equal mix with nitrate inhibited growth and caused pathological symptoms.
- Lettuce preferentially absorbed NH4(+)-N over NO3(-)-N, but NH4(+)-N was detrimental to metabolism.
Impact:
- Results indicate nitrate nitrogen is the most suitable N source for lettuce.
- High ammonium concentrations negatively affect lettuce root development and overall plant health.
- Findings provide insights for precise nitrogen management in lettuce cultivation to enhance yield and quality.
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