Onions Maintain Yield with Less Insecticide and Fertilizer

Research by Cornell AgriTech scientists showed that New York onion growers can cut insecticide and fertilizer use without affecting yields. When growers used action thresholds for applying insecticides to control onion thrips, they made an average of 2.3 fewer pesticide applications per season. The scientists also discovered in three years of field trials that farmers could use 50 to 100% less fertilizer without reducing yields. In testing, the amount of fertilizer applied to an onion at planting had no impact on thrips population levels, bulb rot, or on onion bulb size and yield.