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| Robert Rodale defined organic and "natural" fertilizers. Natural fertilizers are used as they are found behind critters or in holes in the ground. "Chemical" fertilizers are processed to change something or are created by reacting things together, like reacting nitrogen from the air with hydrogen from natural gas to make anhydrous ammonia. Both pretty natural elements, but by Rodale's rules, not "natural."
"Natural" rock phosphate has no crop response in pH neutral soils. It takes acid to make it available, but if processed with acid then its not organic. Some of the western rock phosphate mines are superfund cleanup sites from discarding materials that acid processing to make super phosphate has taken out of rock phosphate. So its likely rock phosphate contains stuff that's definitely unhealthy.
Point is, organic rules are based on one man's ideas without researched background. But some have accepted them. And that man is no longer around to defend or improve on those rules.
Gerald J. | |
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What is wrong with Organic food?
