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Actually nitrogen is a key agricultural question that not only sabotages the 'green revolution' gloss but challenges all industrial agriculture precepts. It is the unsustainable 'energy' (like coal) exploited to over feed the soils of the capitalist world.It destroys soils, and when it runs off into catchments it kills seas. A key factor (but not the main one) destroying the Great Barrier Reef is Nitrogen run off. The whole N:P:K obsession is also being challenged by a shortage of Phosphorous. This is why in some countries agricultural scientists are experimenting with harvesting human urine as whizz has plenty of K. While Methane and Carbon emanated by agriculture can be greatly reduced by changing grazing and horticulture protocols to improve the microbial content of soil, free use of Nitrogen --as in chemical fertilizers -- has to stop pro tem. Agriculture needs to be weaned. For a better take on agriculture check out the Soil Alliance that a gropiup of socialsits run here in Australia. http://soilalliance.blogspot.com.au/ dave riley _________________________________________________________ Full posting guidelines at: http://www.marxmail.org/sub.htm Set your options at: http://lists.csbs.utah.edu/options/marxism/archive%40mail-archive.com
