This book discusses the fundamental ideas about the numerical description of plant development and considers effects of climatic factors, such as temperature, light, and water on physiological processes in plants. Ecophysiology of major tropical tree crops, considered here on a broader sense and including species such as banana, cashew, cassava, citrus, cocoa, coconut, coffee, mango, papaya, rubber, and tea, are examined. A valauble reference guide for practicing researchers, academics, PhD students and other scientists.