More on anthracnose, nitrogen and potassium

Researchers at Rutgers University continue to investigate the impact of nitrogen and potassium fertilization on suppression of anthracnose on Poa annua greens. To highlight this project, Teresa Carson, recently retired from GCSAA, published a short summary of research that was presented in 2019. The results indicate that increased nitrogen (N) and potassium (K) can suppress anthracnose, something we have encouraged for years based upon previous Rutgers research. But what ranges of N and K were tested, and how do the…