Blight
Blight is a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral organs. Accordingly, many diseases that primarily exhibit this symptom are called blights. Several notable examples are:
Lima bean agar
Lima bean agar (LBA) is a kind of agar medium which is used to cultivate the spore of "Phytophthora sojae". "Phytophthora sojae" causes soybean blight (Phytophthora root rot of soybeans). Soybean blight can affect the output and quality of soybeans seriously. The spore of "phytophthora sojae" is difficult to culture in potato dextrose agar; it is generally cultured by lima bean agar and carrot agar. Lima bean agar can cultivate, separate, reproduce and conserve many kinds spore of "phytophthora sojae", but it is not suitable for cultivating the pathogen of potato late blight.