All About Apples: About the science, production, and health benefits of apples.
Apple Fruit Thinning: Article from Virginia Tech's Department of Horticulture on the practice of removing part of the crop before it matures on the tree. History, factors affecting thinning, and chemicals used.
Apple Growing: Fact sheet on commercial cultivation with a focus on Australia.
Fruit Trees in our Orchard at Attiswil: Description of apples and other fruit trees in an orchard in Switzerland.
Oil and Other Early Season Sprays for Apple and Pear Trees: Gives tips on how and when to apply t pesticide treatments to certain fruit trees. By the Ohio State University Extension Department.
UVM Apple Orchard: Extension and research for the commercial tree fruit grower in Vermont and beyond.