Farmers have been saying it for years: it's nearly impossible to find corn seed that isn't pre-treated with neonicotinoid pesticides. At a Congressional briefing in DC last week, Dr. Christian Krupke of Purdue University presented hard data to support what farmers are reporting: 94% to 98% of corn seed in the U.S. is pre-treated with neonics. This is particularly bad news for pollinators, since we know neonics pose a threat to bees even at low levels.
Dr. Krupke and other scientists have been looking at this issue more closely, and recent studies are showing that neonic seed treatments don't actually add much value to crops. They don't improve yields and don't markedly reduce damage from common pests. The equation doesn't add up. If they harm bees AND don't add much benefit, why are these seed treatments so prevalent?