In summer weather in West Bengal, India the temperature rises as high as 40-45 degree Celsius in some places.Under this condition in the coastal regions of Purba Medinipur near Digha under Ramnagar Block the Azolla pits can hardly be saved in this summer. It is apprehended that the plant may be attacked by Dieback disease. I like to know details about the dieback disease of Azolla and how to cure Azolla from dieback disease?