Worldwide climatic changes have been raising concerns about potential changes to crop yields and production systems. Such concerns include the ability to accommodate these uncertain effects in order to ensure an adequate food supply for an ever increasing human population. To increase food security and alleviate poverty there is a need to introduce improved crop-production technologies to farmers or growers and by promoting appropriate policies that help them to adopt new technologies. Responsible agriculture must be viable yet sustainable – economically, environmentally and socially. This book focuses on the preharvest practices on the production and quality of food crops. Nine chapters  are includes in this book, which  are : Effect of Preharvest Factors on the Quality of Vegetables Produced in the Tropics; Vegetables: Growing Environment and the Quality of Produce; effects of Agronomic  Practices and processing Conditions on Tomato Ingredients; Modeling  Fruit Quality: Eco physiological, Agronomical and Ecological Perspectives; Sprays Technology in Perennial Tree Crops; Chestnut , an Ancient Crop With Future; Improvement of Grain Legume Production in Semi-Arid Kenya Through Biological. This book will be especially useful to researches engaged in postharvest research. Also, it will be valuable for graduate and post-graduate students majoring in foods science and researches.