Crops > Plant Diseases in Crops, Forages, & Small Grains

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Plant and Insect Diagnostic Clinic Plant Nematode Sample Submission Form
Download and use this form when submitting soil samples for nematode identification and counts. This form is for soybean cyst nematode egg counts, nematodes on corn, turfgrass nematodes, nematodes
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Bacterial Leaf Streak
This publication examines the symptoms of bacterial leaf streak in corn, describes how bacterial leaf streak differs from several other diseases that may look like it, and provides other information r
Frogeye Leaf Spot
This publication examines the symptoms of frogeye leaf spot in soybean, describes how frogeye leaf spot differs from several other diseases that may look like it, and provides management recommendatio
Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode in Iowa - 2016
Use of resistant soybean varieties is a very effective strategy for managing soybean cyst nematode (SCN). Numerous SCN-resistant soybean varieties are available for Iowa soybean growers. This report
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Corn Disease Loss Estimates For the United States and Ontario, Canada - 2013
Created by the Crop Protection Network, which includes authors from land-grant universities across the North Central Region and Ontario, this publication documents the impact of major diseases on corn
Soybean cyst nematode-resistant soybean varieties for Iowa
Details on selecting and managing soybean cyst nematode-resistant varieties.
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Bacterial Leaf Streak of Corn
Bacterial leaf streak, caused by Xanthomonas vasicola pv. Vasculorum, was recently identified in Iowa. The disease has been found in field corn, seed corn, popcorn and sweet corn. Based on what we kno
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A Farmer's Guide to Corn Diseases
A Farmer’s Guide to Corn Diseases provides an overview of the corn diseases that currently occur in the United states and Canada, with an emphasis on diagnosing diseases in the field. Information for
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A Farmer's Guide to Soybean Diseases
A Farmer’s Guide to Soybean Diseases provides an overview of the soybean diseases that currently occur in the United states and Canada, with an emphasis on diagnosing diseases in the field. Informatio
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Charcoal Rot
This publication examines the symptoms of charcoal rot in soybean, describes how charcoal rot differs from several other diseases that may look like it, provides other scouting information, and manage
Corn Disease Loss Estimates For the United States and Ontario, Canada - 2014
Created by the Crop Protection Network, which includes authors from land-grant universities across the North Central Region and Ontario, this publication documents the impact of major diseases on corn
Scouting for Phytophthora Root and Stem Rot in Soybean
Scouting for Phytophthora Root and Stem Rot in Soybean is a publication with information on how to identify, scout for, and manage the disease. The publication was developed by the Crop Protection Net
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Stem Canker
This publication examines the symptoms of stem canker, describes how stem canker differs from several other plant problems that may look like stem canker, and provides other scouting information. The
Pod and Stem Blight and Phomopsis Seed Decay
This publication examines the symptoms of pod stem blight and phomopsis seed decay, describes how pod stem blight differs from several other plant problems that may look like pod stem blight, and prov
Fungicides for Field Crops
This publication contains information on a wide variety of topics related to fungicides and reviews fungicide use for many different field crops grown in the United States. Published by APS Press, Fun
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Forage Series CD
This CD contains full versions of selected Crop Adviser Institute (CAI) learning modules in the Pest Management and Crop Management areas. You will have full access to all materials except t
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CD/DVD $5.00 Add to Cart
Corn & Soybean Management: Insects and Diseases Series CD
This CD contains full versions of selected Crop Adviser Institute (CAI) learning modules in the Pest Management and Crop Management areas. You will have full access to all materials except the final C
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CD/DVD $5.00 Add to Cart
Aflatoxins in Corn
Aflatoxins are a group of chemicals produced by certain mold fungi. Publication includes information on how to test corn for toxins, current regulations, consequences of high toxin levels, preventive
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Corn Diseases
This booklet will help corn producers and other professionals in the agriculture industry identify corn diseases and provide general recommendations for disease management. The current version i
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Field Crop Insects
Field Crop Insects contains descriptions and color images of more than 55 pest and beneficial insects, as well as information on insect life cycle, damage, scouting and management options. There is al
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Nematodes That Attack Corn in Iowa
Learn about how to sample for nematodes and control them.
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Soybean Diseases
Soybean Diseases contains descriptions and color images of 25 diseases of soybean, as well as information on disease development and management. There is also a brief overview of the types of pathogen
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Submitting Soybean Samples to the Plant and Insect Diagnostic Clinic
Detailed instructions for submitting soybean plant samples, soybean cyst nematode soil samples, and soybean rust leaf samples.
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Controlling Corn Diseases in Conservation Tillage
This publication describes corn diseases that are more prevalent in conservation tillage systems and their management strategies.
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Soybean Brown Stem Rot
Learn about symptoms and management practices for soybean brown stem rot, an economically important disease of soybeans in the North Central U.S. This peer-reviewed publication replaces PM 890.
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Soybean Seed Health
Seed-borne bacteria and viruses can affect soybean seed health. Visual examination and blotter tests described here can be used.
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Soybean Cyst Nematode (SCN) Management Recommendations -- Iowa State University Plant and Insect Diagnostic Clinic
April 2008 revision of soybean cyst nematode management recommendations.
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Phytophthora Root and Stem Rot of Soybean
Learn about causes, symptoms, resistance, and chemical control of Phytophthora root rot of soybean, a widespread soybean disease in Iowa.
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Eyespot of Corn
Learn about eyespot, a common disease in Midwest corn -- its causes, symptoms, and control.
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Corn Stewart's Disease
Publication includes information on disease symptoms, disease spread and development, temperature and flea beetle survival, and how to control the disease.
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Soybean Bacterial Blight and Brown Spot
Identification, scouting, and management information for two of the Midwest's most common soybean diseases, bacterial blight and brown spot.
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Soybean Damping Off
Learn about soybean damping off – its causes, symptoms, occurrence, and management.
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Interpreting SCN Soil Sample Results - Important Points to Consider
This publication answers several questions that may be asked to help interpret soil sample results. Topics include how to relate sample results to management options, why follow-up greenhouse tests a
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Corn Ear Rots, Storage Molds, Mycotoxins, and Animal Health
Learn how to identify corn ear rots, storage molds, and mycotoxins and how they affect animal health. Includes a checklist to help prevent molds and toxins and what to do with damaged grain.
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Soybean Cyst Nematode
Learn about symptoms, life cycle, spreading, and management of soybean cyst nematode (SCN), a parasitic roundworm that attacks soybean roots.
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Corn Disease Management
This publication discusses the major categories of corn diseases and common control alternatives for each.
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