Common physiological disorders
This topic covers the most frequent physiological (non-pathogenic) disorders in coffee plants, how they differ from diseases, their causes, and their impact on yield and bean quality.
Lower yields
Yield vs quality trade-offs
This topic explains the natural and management-driven trade-offs between maximizing coffee yield and achieving high cup quality, and why farmers, buyers, and consumers must balance these competing priorities.
Photosynthesis, shade response, and stress
This topic explores how coffee plants capture energy through photosynthesis, how they respond to shade versus direct sunlight, and how environmental stress affects their growth, yield, and cup quality.
Arabica vs Canephora (Robusta) vs Liberica/Excelsa
This topic compares the three main commercial coffee species—Arabica, Robusta (Canephora), and Liberica/Excelsa—covering their genetics, cultivation environments, bean traits, flavor profiles, and market roles.