Dept of Agriculture Development 
SFAC KeralaThe disease starts as raised chlorotic to brown spots on the leaf and stem surface. As the plant matures the spore masses become brown to black. The symptoms are seen mostly on the under surface of the leaves. Plants with severe rust infection appear stunted , chlorotic, or otherwise discolored.Cool temperature and high relative humidity favors the disease development
Please contact with our toll free number 1800 425 1661
