Stem blight is a plant disease that affects the stems of various plants, leading to wilting, discoloration, and eventual death of the affected parts. It is often caused by fungal pathogens, such as Botrytis or Phomopsis, which thrive in warm, moist conditions. The disease can spread rapidly, especially in dense plantings, making early detection and management crucial. Symptoms of stem blight include dark, water-soaked lesions on the stems, which can expand and cause the stem to collapse. Infected plants may also show stunted growth and reduced yield. Proper cultural practices, such as crop rotation and good sanitation, can help prevent the occurrence of stem blight.