Plant Diseases
Pasture and Grazing Management in the Northwest
$18.00 The comprehensive resource for anyone who manages livestock on pastures in the Northwest, this 214-page book offers pasture managers information and tools to enable their pastures and their...
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 chemical...
Rhizoctonia Stem Canker and Black Scurf of Potato
Various types of rhizoctonia stem canker and black scurf affect Idaho potatoes, often because farmers rotate sugar beet and tubers. Learn about their symptoms and disease cycle, as well as the best...
Idaho Forage Handbook (third edition)
This comprehensive information source for anyone who grows forage in Idaho or neighboring states covers topics from species and variety selection to pest control to harvest management, hay storage,...
Cleaning and Disinfecting Potato Equipment and Storage Facilities
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...
Diagnosis and Management of Potato Storage Diseases
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.
Rhizoctonia on Sugar Beet: Importance, Identification, and Control in the Northwest
In the 2000s, the incidence of root rot, which causes major sugar beet damage, increased in Idaho’s Magic Valley. Learn about the different kinds that exist and which ones to look out for in the...
Early Blight Biology and Control in Potatoes
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...
Powdery Mildew on Sugar Beet: Importance, Identification, and Control
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...
Potato Seed Certification and Selection in Idaho
The selection of high-quality seed potatoes is essential to produce a profitable commercial potato crop. This publication explains the steps you need to take do to get your seed potato certified,...
Barley Yellow Dwarf Virus in Idaho Cereal Crops
Describes the symptoms, method of spread, and control measures for barley yellow dwarf, a viral disease spread by aphids. Color photos. Authors: Juliet M. Marshall and Arash Rashed 4 pages
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...
Rhizomania on Sugar Beet: Importance, Identification, Control
First detected in Idaho in 1992 near Rupert, rhizomania is the most serious disease that afflicts sugar beets worldwide. This five-page publication will help you to detect and deal with the...
Controlling Iron Deficiency in Plants in Idaho
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...
Portable Test Kits for Diagnosing Potato Diseases
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...
Management of Corky Ringspot Disease of Potatoes in the Pacific Northwest
This 6-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...
Management of White Mold of Beans
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...
Managing Late Blight on Irrigated Potatoes in the Pacific Northwest
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...
Alaska Field Guide to Potato Pests and Beneficial Insects in English and Russian
This 128-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...
This two-page fact sheet offers recommendations for growing dry beans in southern Idaho, with pointers on soil sampling and testing, fertilization, irrigation, and insect, weed and disease control.
Pink Root Disease of Onion: Biology and Control
Pink root is one of the most significant diseases of onion in the Treasure Valley of Idaho and Oregon. Nearly one-quarter of susceptible onion losses are due to it. Learn what the symptoms are,...
Wheat streak mosaic virus Management in Idaho Cereals
Wheat streak mosaic virus (WSMV) is a serious disease that damages wheat production in Idaho. Transmitted by the wheat curl mite, WSMV infects winter and spring wheat and can also infect barley,...
Controlling Ascochyta Blight of Chickpea
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...
Superficial Growth on Potatoes
In some circumstances, nonpathogenic fungi and bacteria grow on the surface of a potato. This publication describes its growth, explains the factors that promote it, and provides some management...
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...
Silver Scurf Management in Potatoes
Silver scurf, a fungal disease that causes blemishes that make potatoes appear “dirty,” has plagued North American potato production for the past thirty years. Its unsightly appearance discourages...
Controlling Root and Crown Diseases of Small Grain Cereals
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...
Field Guide for Integrated Pest Management in Pacific Northwest Vineyards
To produce high-quality wine and juice grapes, effective pest management is essential. The second edition of Field Guide for Integrated Pest Management in Pacific Northwest Vineyards addresses this...
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...
Internal Dry Scale and Associated Bulb Rots of Onion
Onion growers and packers in the Pacific Northwest have observed a problem on red, white, and yellow cultivars: internal dry scale. Bulbs affected by internal dry scale have dead inner scales that...
Field Guide for Diagnosing Common Wheat Maladies of the Pacific Northwest
This field guide provides an overview of basic plant pathology concepts that are relevant to disease identification in wheat. It introduces tools to help distinguish between biotic and abiotic...
Agronomics of Leasing Fields for Potato Production
Leasing or renting fields for potato production may make it easier for growers to either start an agricultural career or expand one, but be forewarned: gather as much background information as you...