Related Experiment Video
Updated: May 24, 2026

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis
Published on: May 10, 2020
World fertilizer nutrient reserves: a view to the future
Paul E Fixen1, Adrian M Johnston
1International Plant Nutrition Institute, Brookings, SD 57006, USA.
Sustainable agriculture in subtropical regions requires understanding global fertilizer nutrient reserves. Implementing the 4Rs (right source, rate, time, place) ensures efficient nutrient use and conserves non-renewable resources.
Area of Science:
- Agricultural Science
- Soil Science
- Nutrient Management
Background:
- Subtropical regions face increasing food production demands, necessitating greater plant nutrient availability.
- Sustainable agriculture hinges on understanding and managing global fertilizer nutrient reserves.
- Responsible agricultural practices involve the judicious use of raw materials for fertilizer production.
Purpose of the Study:
- To highlight the importance of global fertilizer nutrient reserves for subtropical agriculture.
- To emphasize the role of fertilizer best management practices in sustainable agriculture.
- To advocate for the 4Rs (right source, right rate, right time, right place) of nutrient application.
Main Methods:
- This study is a review and synthesis of existing knowledge on fertilizer nutrient reserves and best management practices.
- It analyzes the implications of nutrient resource availability for agricultural sustainability.
- It discusses the principles of the 4Rs framework in nutrient management.
Main Results:
- Global fertilizer nutrient reserves are finite and require careful management.
- The 4Rs framework offers a strategic approach to optimize nutrient use efficiency.
- Adoption of best management practices can mitigate economic and environmental impacts.
Conclusions:
- Knowledge of world fertilizer nutrient reserves is crucial for ensuring food security in subtropical areas.
- Implementing the 4Rs is essential for the long-term sustainability of agriculture and the conservation of non-renewable resources.
- Wise stewardship of nutrient resources is a key responsibility for modern agriculture.
Related Concept Videos
Key Elements for Plant Nutrition
The Roles of Bacteria and Fungi in Plant Nutrition
Overview of Nitrogen Metabolism
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this nitrogen...
Microorganisms in Agriculture and Food industry
The Nitrogen Cycle
Inorganic Nitrogen Assimilation
