October 22, 2019 | By Rupp Seeds
Corn is vulnerable to infection by plant pathogens throughout the growing season, particularly when environmental conditions favor: seed rots and seedling blights soon after planting, foliar disease in mid-season, and stalk, stem, and ear rots toward the end of the growing season. Many of these diseases are caused by pathogens that survive in crop residue as well as in the soil. The risk of increased disease severity is higher when corn follows corn. Three factors are needed for disease to develop; a susceptible host, a pathogen and a favorable environment. When the disease organism is present and you have a susceptible host, you still need the right environment to drive the development of disease.
Incorporating infected corn residue into the soil will help reduce future risk by speeding the deterioration of infected stalk residue. Learn more about how tillage can help manage the spread of seedling and foliar diseases and stalk and ear rots in this issue of SeedScoop.SeedSCOOP - The Benefits of Tillage – Managing Fall Residue for Disease Management in Corn