Role of the environment
{"Image DocumentName": "Role of the environment", "Image ImageDescription": "A favorable environment is critically important for disease development \u2013 even the most susceptible plants exposed to huge amounts of a pathogen will not develop disease unless environmental conditions are favorable. A favorable environment is needed for plant disease to develop. For example, soybean and the white mold fungus (page 30, Soybean Field Guide 2nd Edition) must interact in cool, moist conditions during flowering in order for disease (white mold) to occur. A favorable environment is critically important for disease development \u2013 even the most susceptible plants exposed to huge amounts of a pathogen will not develop disease unless environmental conditions are favorable. Temperature and moisture are the most important environmental factors that affect development of nearly all diseases. Both air or soil temperature and moisture can affect soybeans and/or the pathogen. If temperature is unsuitable, a soybean plant may grow poorly, and therefore become more susceptible to a particular disease. Temperature also may stimulate or reduce the growth of a pathogen, resulting in a different level of disease. Excess or deficient moisture also may stress soybean plants, making them more prone to attack by some pathogens. Additionally, moisture is important for many fungal and bacterial pathogens. Relative humidity, soil pH, soil texture, light, and nutrient status may affect disease development as well. Moreover, such factors as compaction, tillage practices, planting depth, seed bed preparation, and residue management can have significant effects on disease development.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}