All about Pummelo (Citrus maxima), its phenology, vegetative growth, flower and fruit development, yield, quality, nutrient and antioxidant contents. And the role of Potassium (K) in Pummelo Nutrition. Its enhancing effects on flushing, flowering, fruiting, yield, quality and nutrition. A practical guide for pummelo and citrus growers on the best cultural practices and K need of Pummelo and other citrus to maximise yield and production. A study conducted at the best tropical location in Davao City, Philippines where the sweetest pummelo fruits of the country can be found.