High temperature is a limit factor for successful potato cultivation in lowland tropical regions. The inhibitory effect of high temperature is mediated through high levels of Gibberellin (GA) like compounds & there effect could be averted using GA biosynthesis inhibitors like Paclobutrazol (PBZ). Understanding the effect of reproductive growth on dry matter production and distribution is crucial in crops like potato. Effects of foliar & soil applied PBZ on soot growth, anatomical modifications, chlorophyll content, rate of transpiration, net photosynthesis, tuber yield, quality & dormancy of potato grown under non-inductive greenhouse conditions & in a hot tropical lowland are presented in this book. Influence of flowering and berry set on the rate of respiration, net photosynthesis, shoot growth, tuber yield and quality of potato, and the effectiveness of both MCPA and PBZ in suppressing flowering and berry set also included. This book, therefore, provides valuable information that could be used by researchers to design viable potato production programs in areas where high temperature and excessive berry set are limiting factors for its successful production.