ah but thats where you are wrong. From reliable sources, this is not how it works, greater yield doesnt necessarily mean healthier parasites and pests. Take for example research into nematode (worm like parasites, cats usually have em, threadworm, tape worm etc). well they also infect plants and crops. So, GM potatoes are modified in a way to not only be more resistant to pesticide, but also nematodes that might otherwise devestate crops
