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University of Idaho Extension

 

Physical Address:
E. J. Iddings Agricultural Science Laboratory
Room 52
606 S Rayburn St.
Moscow, ID

Mailing Address:
University of Idaho Extension
875 Perimeter Drive MS 2338
Moscow, ID 83844-2338

Phone: 208-885-5883

Fax: 208-885-6654

Email: extension@uidaho.edu

Google Maps

Barbara Petty

Email: extdir@uidaho.edu


Plant Diseases Publications & Resources


2017 Pacific Northwest Plant Disease Management Handbook
A comprehensive guide to plant disease management in the Pacific Northwest. Includes materials and tactics suitable for organic production and homeowner use as well as for commercial production. Co . . . . . more details
 
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Alaska Field Guide to Potato Pests and Beneficial Insects in English and Russian > PDF
This 122-page pocket-sized manual helps potato field workers scout for and identify economically important diseases, insects, and weeds in potato crops in Alaska. Each pest or beneficial insect is ass . . . . . more details
 
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Apple Scab > PDF
Particularly troublesome where rainfall and relative humidity are high, and under overtree irrigation, apple scab can defoliate trees and blemish fruit to a point where it is unmarketable. Learn the s . . . . . more details
 

Ascochyta Blight of Chickpea > PDF
This publication offers an overview of the blight fungus, its disease cycle and spread, and control strategies. Control information includes host resistance, clean seed, fungicides, crop residues, and . . . . . more details
 

Barley Yellow Dwarf Virus in Idaho Cereal Crops > PDF
Describes the symptoms, method of spread, and control measures for barley yellow dwarf, a viral disease spread by aphids. 4 pages with color photos. Authors: Juliet M. Marshall and Arash Rashed . . . . . more details
 

Cleaning and Disinfecting Potato Equipment and Storage Facilities > PDF
One important step in preventing the spread of potato diseases from field to field is the careful cleaning of equipment used in potato fields and by the effective cleaning of storage facilities before . . . . . more details
 

Controlling Ascochyta Blight of Chickpea > PDF
This publication covers the background of the fungal blight and information on how to sustain profitable chickpea production. Topics covered include rotating crops, choosing crop varieties, using cert . . . . . more details
 

Controlling Iron Deficiency in Plants in Idaho > PDF
One of the most common problems for Idaho growers, landscapers, and home gardeners is plant iron deficiency, or chlorosis. Leaves turn yellow while the veins remain green. This publication describes m . . . . . more details
 

Controlling Root and Crown Diseases of Small Grain Cereals > PDF
This publication describes practices to manage and minimize losses from root and crown diseases of wheat and barley throughout the Pacific Northwest. Authors: Richard Smiley, Timothy Paulitz, Juiet Ma . . . . . more details
 

Corn Smuts > PDF
Two types of smut attack corn in the Pacific Northwest: common smut and head smut. This publication provides descriptions of symptoms and the disease cycle, and management strategies (which differ con . . . . . more details
 

Diagnosis and Management of Potato Storage Diseases > PDF
Learn how to identify the major storage diseases of potatoes and how to manage them through prevention, storage disinfection, and management of temperature, humidity and airflow during storage. Contai . . . . . more details
 

Early Blight Biology and Control in Potatoes > PDF
With a focus on Idaho conditions, this publication describes the symptoms and disease cycle of early blight in potatoes and recommends control measures including cultural control, resistant cultivars, . . . . . more details
 

Karnal Bunt > PDF
Karnal bunt, or partial bunt, is a fungal disease of wheat, durum wheat, rye, and triticale. This publication includes information on the history, impact, symptoms, disease cycle, and control of karna . . . . . more details
 

Late Blight Management Action Plan for Potatoes > PDF
Late blight is the most important disease of potatoes worldwide. Since 1995, late blight has occurred in all Idaho commercial potato production areas. This publication offers best practices for contro . . . . . more details
 

Management of Corky Ringspot Disease of Potatoes in the Pacific Northwest > PDF
This 5-page publication covers symptoms, causes, and spread of corky ringspot disease; testing your soil for stubby-root nematodes, which carry the disease; options for controlling the disease; and ti . . . . . more details
 

Management of White Mold of Beans > PDF
Describes the symptoms, disease cycle, and management of white mold in beans, including prelanting considerations, cultural control, and chemical control. Full-color photographs picture white mold as . . . . . more details
 

Managing Late Blight on Irrigated Potatoes in the Pacific Northwest > PDF
Discusses symptoms of late blight and biology of the late blight organism. Integrated pest management strategies cover between-season management, current-season management, and harvest and storage man . . . . . more details
 

Portable Test Kits for Diagnosing Potato Diseases > PDF
University of Idaho scientists evaluated commercially available portable test kits for diagnosing potato diseases, finding them generally accurate and easy to use. This publication discusses the impor . . . . . more details
 

Potato Psyllid Vector of Zebra Chip Disease in the Pacific Northwest > PDF
This publication addresses the emergent issue in the PNW of a potato infection called zebra chip disease, vectored by the potato psyllid. Includes information on the bacterium, the biology of the vect . . . . . more details
 

Potato Virus Y Management for the Seed Potato Producer > PDF
One of the most serious challenges facing seed potato producers is managing Potato virus Y (PVY), which causes a range of symptoms in infected potato plants, varying with potato varieties. This public . . . . . more details
 

Powdery Mildew on Sugar Beet: Importance, Identification, and Control > PDF
Powdery mildew on sugar beets can be particularly severe in arid climates, causing sugar yield losses of up to 35%. This publication describes the pathogen, its symptoms, disease cycle and epidemiolog . . . . . more details
 

Rhizoctonia on Sugar Beet: Importance, Identification, and Control in the Northwest > PDF
Color photographs illustrate symptoms of Rhizoctonia foliar blight and crown and root rot on sugar beet. The text discusses disease symptoms, the causal organism, and control measures including cultur . . . . . more details
 

Rhizoctonia Stem Canker and Black Scurf of Potato > PDF
With a focus on Idaho conditions, this publication describes the symptoms and disease cycle of Rhizoctonia stem canker and black scurf in potatoes and recommends cultural and chemical control measures . . . . . more details
 

Silver Scurf Management in Potatoes > PDF
Describes the symptoms and damage caused by silver scurf, a fungal disease of potatoes. Includes color photos of symptoms. Discusses sources of inoculum and the disease life cycle. Suggests management . . . . . more details
 

Slime Flux of Trees > PDF
Slime flux, or bacterial wetwood, commonly affects the following Idaho trees--cottonwood, willow, elm, and poplar. Learn the symptoms of slime flux, the microbes responsible for it, and the practices . . . . . more details
 

Superficial Growth on Potatoes > PDF
Non-pathogenic fungi and bacteria can in some circumstances grow on the surface of a potato. This publication describes the growth, explains factors that can promote the growth, and gives management p . . . . . more details
 

White Mold of Potatoes > PDF
With a focus on Idaho conditions, this publication describes the symptoms and disease cycle of white mold in potatoes and recommends cultural, biological (with Conithirium minitans), and chem . . . . . more details
 


Contact Information

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University of Idaho Extension

 

Physical Address:
E. J. Iddings Agricultural Science Laboratory
Room 52
606 S Rayburn St.
Moscow, ID

Mailing Address:
University of Idaho Extension
875 Perimeter Drive MS 2338
Moscow, ID 83844-2338

Phone: 208-885-5883

Fax: 208-885-6654

Email: extension@uidaho.edu

Google Maps

Barbara Petty

Email: extdir@uidaho.edu