Changes in the phenology of growth from year to year according to weather conditions were noted.
The study of the relations between weather and crops is really a branch of a science of broader254 scope, known as phenology.
A study of phenology would throw much light on the failure of pears to ripen properly.
The scientific study of cyclical biological events, such as flowering, breeding, and migration, in relation to climatic conditions. Phenological records of the dates on which seasonal phenomena occur provide important information on how climate change affects ecosystems over time.