Potato Late Blight - Disease management, photos of symptoms, information on other tuber and foliar diseases, and relevant links. North Dakota State University, U.S. Aphid Monitoring - Aphids can transmit Potato Virus Y which is a serious threat to potato crops. The British Potato Council offers a service monitoring this pest to help in decision making on insecticide use. Diseases of Potatoes - An identification guide to the bacterial, fungal, nematode, viral and other diseases that may infect this crop, with many photographs, brief descriptions of the symptoms and suggested management strategies. Organic Alternatives for Late Blight Control in Potatoes - New strains of late blight make potato production especially challenging. Several nonchemical options are available for managing this disease, including cultural practices, some varietal resistance, and alternative fungicidal sprays. UC IPM Online: Potatoes - Provides a year-round IPM program for potatoes with information on monitoring and managing the pests and diseases found. Potato Yellow Dwarf Virus, Nucleorhabdovirus - Photograph of an affected plant and a description of the symptoms. Virus Problems of Potatoes - Photographs of symptoms and information on virus Y, leafroll virus, virus S, virus X, mop top virus, spraing, tobacco rattle virus, potato spindle tuber viroid and alfalfa mosaic virus. Blightwatch.co.uk - Blightwatch is a collaborative service supported by the British Potato Council and aims to give growers a management tool for assisting in the control of blight. Colorado Potato Beetle: Effective Chemical Control - Provides details of the degree of resistance built up by this beetle to different pesticides, with special reference to Alberta. Nematode Management in Potatoes - Information on general IPM considerations, symptoms, damage, field diagnosis and sampling, general management considerations, crop rotation, varietal resistance and control. PotatoBeetle.org - Information on biology and management of the Colorado potato beetle, Leptinotarsa decemlineata. Includes general information, review of various management techniques, searchable database of scientific literature and links to other resources. Diseases of Potato - Provides the common names of the bacterial, fungal, nematode, viral and other diseases that affect the plant.