Harmful insects and mites may be feeding on your crop’s leaves, reducing photosynthesis. They may be damaging your stalk, which could lead to standability issues or the prevention of proper nutrient movement in the plant. Many insects and mites carry disease and inject that into your crop. Any insect or mite feeding creates open wounds in crops, which allows diseases to easily enter and damage plants.
All these things add up to yield loss and decreased farm income, which is why I am so passionate about controlling harmful insects and mites!
My advice to you is to always look at economic thresholds…