University of Arkansas. Cooperative Extension Service.
The collection of digital images is provided as a service to Arkansas agriculture. These images represent symptoms of both pathological (infectious) and non-pathological (physiological/environmental) disorders of agronomic row crops and horticultural crops that grow in Arkansas. These photos are useful as an identification tool to growers of the crops listed.
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab. National Exotic Marine and Estuarine Species Information System (NEMESIS).