Phenology forecasts predict pest seasonal activity to support decision making

The USA National Phenology Network (USANPN) produces and distributes daily national phenology maps – or Pheno Forecasts – indicating when key pest species may be most susceptible to management as part of a growing suite of phenology map products.

The USA-NPN’s Pheno Forecast maps show when key pest species, including emerald ash borer (Agrilus planipennis), apple maggot (Rhagoletis pomonella), lilac borer (Podosesia syringae), hemlock woolly adelgid (Adelges tsugae), and winter moth (Operophtera brumata), are most susceptible to management treatments (Figures 1, 2, 3). These maps, available at 2.5 km spatial resolution, are updated daily and are available six days into the future.