Mungbean (Vigna radiata (L.) Wilczek) is one of the important pulse crop, primarily grown for food in India. During the survey, occurrence of Mungbean Yellow Mosaic Virus (MYMV) in mungbean was noticed in serious proportion causing heavy losses in Navsari, Surat and Valsad district. Cultivar GM-4 and K-851 was found more severely affected at the flowering stage during summer season. Considering the seriousness of the problem, the present investigation was carried out virus transmission and detection of virus.

The present book attempts to portray the significance of geographical and other elements to the development of ecotourism. it also gives an insight of tourists behaviour to the nature. Development of ecotourism is not mere the visiting destinations of natural beauty but endeavour to preservation and conservation of the nature that lasts the virgin nature to the generation to come. Present work points to the need of sustainable development of ecotourism.

Analysis of linear and spatial aspects of streams in quantitative forms is significant to determine the rate and degree of erosion as well as to resolve the causes of degradation. This book provides an insight to recognize the significance of scientific river management especially at the source region and transfer zone of rivers to minimize the human and nature-induced problems like river bank erosion, frequent floods etc.