This research work entitled "Aerobiology in disease forecasting of jowar". The research work was carried out under the guidance of father of Indian Aerobiology Professor (Dr.) S.T.Tilak at Rahuri. Dist. Ahmednagar of Maharashtra State of India. Present research was carried out over Jowar crop for four consecutive seasons. This work will definitely helpful to the farmers for disease forecasting of Jowar crop. The text has been written in lucid language and profuse illustrations. This book will be the guideline for the researchers of Aerobiology, Mycology and Plant pathology. I extend my thanks to my Colleagues Dr. K.S.Bhosale and Dr. S.V.Ahire who helped me directly and indirectly during completion of this book. The suggestions and healthy criticism of the book will be much value to me for the improvement.