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Diseases- Weeds- Insects & Other Problems-C102

  • Vegetable Leafminers
    $0.00

    Vegetable Leafminers

    Author(s) K. A. Delahaut  Leafminers are the larval stage of flies, moths, sawflies, and beetles that often cause damage to leafy edible plants su...

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  • Vegetable Aphids
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    Vegetable Aphids

    Author(s) K. A. Delahaut  This fact sheet covers vegetable aphids, including the bean, pea, green peach, melon, potato, cabbage, and corn leaf aph...

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  • Tomato Late Blight
    $2.00

    Tomato Late Blight

    Author(s) Amanda Gevens, Jaime Wilbur Late blight can result in complete destruction of tomato crops if left unmanaged. Learn about the symptoms,...

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  • Tomato Disorder: Post-Harvest Fruit Diseases
    $2.75

    Tomato Disorder: Post-Harvest Fruit Diseases

    Author(s) Karen Delahaut, Walt Stevenson Even though symptoms may not appear until after harvest, many of the disease-causing organisms that cause...

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  • Squash Vine Borer
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    Squash Vine Borer

    Author(s) K. A. Delahaut  The squash vine borer is an annual pest of pumpkins and squash. Winter squash are especially vulnerable. This fact sheet...

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  • Squash Bug
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    Squash Bug

    Author(s) K. A. Delahaut Squash bugs are a problem in Wisconsin, feeding on most vine crops such as pumpkins and squash in commercial and home gar...

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  • Potato Leafhopper
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    Potato Leafhopper

    Author(s) K. A. Delahaut In Wisconsin, the potato leafhopper (Empoasca fabae) is a serious annual pest of snap beans and potatoes. Damage caused b...

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  • Potato Late Blight
    $2.00

    Potato Late Blight

    Author(s) Amanda Gevens, Jaime Wilbur Late blight affects a variety of plants in the Solanaceae family but is best known for its destruction of p...

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    $2.00
  • Potato Disorders: Common Scab and Powdery Scab
    $2.50

    Potato Disorders: Common Scab and Powdery Scab

    Author(s) Karen Delahaut, Walt Stevenson Two distinctly separate diseases commonly known as scab can infect potatoes, significantly reducing tuber...

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    $2.50
  • Onion Thrips
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    Onion Thrips

    Author(s) K. A. Delahaut Onion thrips (Thrips tabaci) are an important annual pest of onion. They may attack nearly all garden crops, but serious ...

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  • Onion Maggot
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    Onion Maggot

    Author(s) K. A. Delahaut Onion maggots (Hylemya antiqua) are tiny maggots that feed below ground on onion bulbs, making tunnels in the bulbs and p...

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  • Onion Disorders: Botrytis Leaf Blight, Leaf Fleck, and Neck Rot
    $1.00

    Onion Disorders: Botrytis Leaf Blight, Leaf Fleck, and Neck Rot

    Author(s) Karen Delahaut, Walt Stevenson Three types of botrytis diseases affect onion crops. Botrytis leaf blight is a destructive disease caused...

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    $1.00
  • Onion Disorder: Soft Rot
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    Onion Disorder: Soft Rot

    Author(s) Karen Delahaut, Walt Stevenson Bacterial decay, known as soft rot, is one of the most widespread and destructive storage diseases of oni...

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  • Onion Disorder: Smut
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    Onion Disorder: Smut

    Author(s) Karen Delahaut, Walt Stevenson Onion smut can be a serious disease of onions, leeks, and shallots. The disease is caused by the fungi Ur...

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    $1.00
  • Onion Disorder: Purple Blotch
    $1.00

    Onion Disorder: Purple Blotch

    Author(s) Karen Delahaut, Walt Stevenson Purple blotch causes onion leaves to become blighted and die prematurely. The result is reduced yields fr...

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    $1.00
  • Onion Disorder: Fusarium Basal Rot
    $1.00

    Onion Disorder: Fusarium Basal Rot

    Author(s) Karen Delahaut, Walt Stevenson This disease, caused by the common soil fungus Fusarium oxysporum f. sp. cepae, can be found wherever oni...

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    $1.00
  • Onion Disease: Downy Mildew
    $1.00

    Onion Disease: Downy Mildew

    Author(s) Karen Delahaut, Walt Stevenson Downy mildew is a destructive disease that can reduce yield and bulb quality of onions, garlic, leeks, sh...

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    $1.00
  • Insect Pest Management for Greenhouses
    $30.00

    Insect Pest Management for Greenhouses

    Author(s) R. Chris Williamson, Samuel Soper, P. J. Liesch This handy chart lists pesticides that are most effective against common greenhouse pest...

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    $30.00
  • Hornworms
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    Hornworms

    Author(s) K. A. Delahaut Tomato and tobacco hornworms feed on tomatoes late in the season. This fact sheet details the insects' life cycle, the da...

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  • Handbook of Pea Diseases
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    Handbook of Pea Diseases

    Author(s) D. J. Hagedorn This guide provides essential scientific information and meaningful visual guidance regarding the most common diseases o...

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  • Flea Beetles
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    Flea Beetles

    Author(s) K. A. Delahaut Flea beetles are an early season pest commonly found on all members of the cole crop group, such as cabbage, cauliflower,...

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  • Cucurbit Downy Mildew: Identification and Management
    $2.00

    Cucurbit Downy Mildew: Identification and Management

    Author(s) Amanda Gevens, Michelle Marks Cucurbit downy mildew is a destructive disease of all plants in the gourd family, including cucumber, wat...

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    $2.00
  • Cucumber Beetles
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    Cucumber Beetles

    Author(s) K. A. Delahaut Spotted and striped cucumber beetles damage vine crops like cucumbers, squash, watermelons, muskmelons, and pumpkins. Thi...

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  • Corn Disorders: Smut and Rust
    $1.00

    Corn Disorders: Smut and Rust

    Author(s) Karen Delahaut, Walt Stevenson Common smut is caused by the fungus Ustilago maydis and is the most widespread disease of sweet corn, occ...

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    $1.00