This book “Threatening disease : Banded Leaf and Sheath Blight of Maize”is dedicated to Almighty and my parents Dr.Muhmmad Asif and Mrs.Shabnam. It contains 7 chapters covering information on major maize diseases with special reference to Banded Leaf and Sheath Blight disease (BLSB).BLSB of maize is incited by Rhizoctonia solani f.sp. sasakii Exner. is a chronic disease. It has rapidly gained economic importance in several parts of world.It has potential to reduce economic loss up to the extent of 100 per cent. Its soil borne nature and scarcity of resistance germplasm makes it management a challenge for pathologists across the globe.The book covers the information about the loss estimation caused by the disease and Integrated Disease Management (IDM) of BLSB through Chemical, Biological control and varietal resistance. Various standard research journals have been consulted for review. I am thankful to my Publishers entire LAP team and Ms.Alina Covali, Acquisition Editor, for her noble cooperation.