As processed, packaged food makers increase market share of organics - now a $23 billion annual business - USDA bows to lobbying pressure, relaxes stringent standards to allow non-organic ingredients, additives, processing agents. National Organic Program, by not issuing growing, treatment, production standards, has created haphazard system that leaves private certifiers to set organic standards. And: USDA seeking replacement for Barbara Robinson, program's acting director (click 'See also').