Senescence and Postharvest Physiology of Horticultural Crops focus on the biological, physiological, and biochemical changes that occur in fruits, vegetables, and ornamental plants after harvest. Senescence refers to the natural aging process of plant tissues, which leads to deterioration in quality, texture, flavor, and nutritional value. The book explains the role of plant hormones such as ethylene, abscisic acid, and cytokinins in regulating senescence, as well as the 
impact of environmental factors like temperature, humidity, and light. It also covers the mechanisms of respiration, transpiration, and enzymatic activity that influence postharvest life and shelf stability. The text further explores postharvest technologies aimed at prolonging shelf life, reducing losses, and  maintaining quality. Topics include cold storage, controlled atmosphere storage, packaging, use of preservatives, and biotechnological approaches. By  understanding these processes, the book provides practical strategies for farmers, horticulturists, and supply chain managers to minimize postharvest losses  and enhance marketability of horticultural produce. The book is highly useful for students and researchers in horticulture, plant physiology, and postharvest 
technology, but it is also valuable for agricultural extension workers, postharvest technologists, and commercial growers.