After what event do stalk rots typically begin to manifest symptoms?

Stalk rots typically begin to manifest symptoms after the pollination stage of crop development. This timing is crucial, as the period following pollination is characterized by rapidly growing and developing plant tissues that can become more susceptible to infection. The increased moisture content and stress from environmental factors, such as high humidity or waterlogging, can also create ideal conditions for pathogens that lead to stalk rot.

During and after pollination, the plant is under physiological changes and stress, providing an opportunity for pathogens like fungi to invade and cause disease. As the plant channels energy into grain fill and maturation, weakened stalk integrity can lead to rot, resulting in yield losses. Understanding the timing of these symptoms helps in monitoring and managing the health of crops effectively, emphasizing the importance of timing in disease management strategies.