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Plant and Insect Diagnostic Clinic Sample Submission Form
Download and use this form when submitting a plant problem or for insect identification.
PIDC 31 PIDC 33 PIDC 42 PIDC 43 PIDC31 PIDC33 PIDC42 PIDC43
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Midwest Fruit Pest Management Guide 2023-2024
This guide provides conventional pest management recommendations for commercial tree fruit, small fruit, and grape producers throughout the Midwest and surrounding states. These recommendations have been formulated to provide up-to-date information on pesticides and their application.

The guide is available in printed form or as a PDF from Purdue University. Click on"View the Guide" to open the PDF.
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Oak Wilt - Identification and Management - Sustainable Urban Landscapes
Oak wilt, the most damaging disease of oak trees in lowa, has killed many forest and landscape oaks in the eastern and central United States. Oak wilt has not devastated its host species, however, mainly because its spread from diseased to healthy trees has been relatively slow and sporadic. Nevertheless, local outbreaks of oak wilt can kill or injure many trees. The management practices described in this publication can help minimize the risk of losing oaks to this disease.
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Identifying Tree Problems - Sustainable Urban Landscapes
Use this 8-page publication filled with guidelines for examining unhealthy trees and finding expert help.
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Consulting Arborists Provide Service in Iowa
Arborists specialize in the management and care of individual trees. This publication provides a list of arborist vendors certified by the International Society of Arboriculture (ISA), along with their contact information.
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Tomato Diseases and Disorders
Learn about the symptoms and management of common problems for garden and greenhouse tomatoes.

Previously referenced as PM 1266.
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Small-stature Trees for Iowa - Ash Alternatives
This publication lists several small-stature tree selections suitable for the Iowa landscape. These trees listed serve as suitable replacements for ash trees, which are susceptible to the emerald ash borer.
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Dutch Elm Disease and Disease-Resistant Elms -- Sustainable Urban Landscapes
Find out about disease-resistant elms to combat Dutch Elm Disease.
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Crown Rot: A Serious Disease of Hosta and Other Ornamentals - Sustainable Urban Landscapes
Few pests plague hostas and other ornamentals in Iowa.

However, a disease called crown rot has been damaging hostas since the mid-1990s. This publication discusses symptoms and causes of crown rot and how to manage the disease.
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Verticillium Wilt of Woody Plants -- Sustainable Urban Landscapes
Learn about symptoms and management strategies for Verticillium wilt which affects a wide range of trees and woody shrubs. This publication also provides a list of susceptible and resistant tree species.
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Management and Control of Summer Patch (Magnaporthe poae)
Summer patch and necrotic ring spot are common fungi that affect turfgrass. This publication discusses how to identify the fungi, its characteristics and how to manage it if grass is infected.


Previously referenced as SUL 0017
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Got Plant or Insect Problems?
The ISU Plant and Insect Diagnostic Clinic helps Iowans diagnose and manage plant diseases, weeds, and insects in fields and around your home. Here's an introduction to the clinic.
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Common Problems of Ash Trees
Many ash tree problems can be mistaken for emerald ash borer infestation. Before removal or needlessly treating with pesticides, use this diagnostic guide to distinguish emerald ash borer injury from other common problems of ash.
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Organic Apple Production in Iowa
New and experienced organic apple growers will find recommendations in this guide for managing insect pests, diseases, and weeds.

Tips about marketing opportunities also are included.
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$4.00
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Introduction to Iowa Native Prairie Plants -- Sustainable Urban Landscapes
Find out more about native plants and their uses in a garden or large planting. Includes more than 20 color photos, plus a detailed chart of prairie plant characteristics.
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Anthracnose of Shade Trees
Anthracnose is one of the most common foliage diseases of shade trees in Iowa. Find out about symptoms and management. Color photos.
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Hosta Diseases and Pests -- Sustainable Urban Landscapes
Easily identify common diseases and pests and how to manage them effectively.
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Common Rose Diseases
Several rose diseases caused by fungus, virus, or bacterium are discussed. Disease-resistant varieties also are mentioned.
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Leaf Spot and Melting Out of Turfgrass -- Sustainable Urban Landscapes
Description and management information, plus how to submit samples for diagnosis.
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Fungal Cankers of Trees -- Sustainable Urban Landscapes
Cultural management techniques can help reduce the risk of canker diseases.
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Using Mulches in Managed Landscapes -- Sustainable Urban Landscapes
Tips on using mulches to maximize benefits and avoid pitfalls.
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Common Diseases of Conifers in Iowa
Color photos help you make the right diagnosis for nine diseases. Causal agents, typical host species, symptoms, and disease spread are discussed. Also learn proper maintenance and chemical controls to keep your evergreens healthy.
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$3.00
Tree Fruit Pollination
The production of fruit on most plants, trees, and shrubs results from pollination of the blossoms. This publication explores tree fruit pollinations including methods of pollination, blooming times, and a chart to determine which apple cultivars are suitable pollinators.
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Pine Wilt: A Fatal Disease of Exotic Pines in the Midwest -- Sustainable Urban Landscapes
Find out how this disease is caused, how it spreads, and what can be done to manage it.
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