I did a similar experiment with seeds about 10 years ago. I put in my garden two rows of green beans--one with GMO seed from Walmart and one with an heirloom organic variety of seed. The two rows were about 3 feet apart in my garden. What did I see? Bugs ate the GMO plants and almost no beans came from them. The bugs left the heirloom plants alone. After that, I theorized that bugs eating plants are very often trying to take out the genetically bad plants. They're like nature's pruners. Just one small experiment by one person, but it changed my views on "pests" after that, for sure.