Diseases- Weeds- Insects & Other Problems-C280

Author(s) Eileen M. Cullen, John Wedberg. This fact sheet details the life cycle of the European corn borer, or Ostrinia nubilalis, including the ...

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

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

Author(s) J. L. Wedberg. This fact sheet details the life cycle of the northern, western, and southern corn rootworms, the damage they can cause,...

Author(s) K. A. Delahaut, E. M. Cullen, J. L. Wedberg. The corn earworm Helicoverpa zea can cause serious economic damage to fresh market and pro...

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

Author(s) K. A. Delahaut This publication is packed with practical information for organic and conventional growers who encounter Colorado potato ...

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

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

Author(s) Claire Strader, Julie Dawson. One of the most common criticisms of organic agriculture is that it relies too heavily on tillage. While o...

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...

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 ...

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

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

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 U...

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

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

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

Author(s) Claire Strader, Julie Dawson. One of the most common criticisms of organic agriculture is that it relies too heavily on tillage. While o...

Author(s) R. Chris Williamson. This fact sheet on the Japanese beetle, considered the single most important turf grass pest in the United States ...

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

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 d...

Author(s) Jed Colquhoun. When a weed species becomes resistant to a herbicide, it eliminates an entire class of available products. For commercial...

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