Organic vegetable growers often use nitrogen from conventional animal manure and slaughter by-products. These 'repackaged' synthetic N fertilizers cause sustainability problems in organic soil fertility management. This video by USDA-ARS scientist Dr. Eric Brennan was first presented at a symposium "sustainability challenges in organic agriculture," at the the American Society of Agronomy annual meeting in Phoenix, Arizona in November, 2016.
https://scisoc.confex.com/scisoc/2016...
Important questions addressed here are as follows:
- Should organic farmers be allowed to use pure synthetic nitrogen fertilizers rather than just repacked synthetic N?
- Can't legumes produce the agricultural nitrogen needs for our current world population?
- Can nitrogen fertilizers be produced with renewable energy?
- Are synthetic nitrogen fertilizers toxic? What's 'sporganic agriculture'
Sustainability Problems with 'Repackaged' Synthetic Nitrogen in Organic Agriculture
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