* Manual of Tropical and Subtropical Fruits (1920): This book, originally published in 1920 and revised multiple times, remains a classic reference for understanding the cultivation of fruits in tropical and subtropical regions. It covers a wide variety of fruits, their characteristics, growing conditions, and harvesting techniques.
* The Mango: A Review of its Botany, Varieties, Culture, Uses, and Its Place in the World’s Economy (1919): This book provides a comprehensive overview of the mango fruit, from its history and origins to its cultivation, economic importance, and cultural significance.
* The Avocado in the Tropics (1924): This book explores the cultivation, uses, and economic potential of avocados in tropical regions. It covers various aspects like varieties, growing conditions, and pest management.
* The Dates of Egypt and the Date Palm (1913): This work examines the date palm, its cultivation, and its role in Egyptian agriculture and society. It delves into historical aspects, cultural practices, and economic significance.
* Bananas (1938): This book delves into the cultivation, production, and distribution of bananas, covering different varieties, growing techniques, and the economic impact of this fruit.
In addition to these books, Popenoe authored numerous articles and publications in journals and scientific publications related to tropical agriculture, plant breeding, and horticulture. He also contributed significantly to the establishment and development of botanical gardens and institutions dedicated to tropical agriculture research.
His works are still considered valuable resources for researchers, farmers, and anyone interested in the cultivation and diversity of tropical fruits and nuts.