Training and Pruning Apple Trees

Author(s): T.R. Roper Proper training and pruning helps to maximize production of high-quality apples. This illustrated guide shows how and when to prune.   Download Article

Planning and Establishing Commercial Apple Orchards in Wisconsin

Author(s): Teryl R. Roper, Gary G. Frank Apple production can be a financially and emotionally rewarding venture. However, a desire to grow fruit is not sufficient reason to establish a commercial orchard. A small backyard or hobby orchard can be a satisfying avocation, but establishing a successful commercial operation takes time, skill, experience, and capital. […]

Apple Disorder: Sooty Blotch and Flyspeck

Author(s): P.S. McManus, M.F. Heimann Sooty blotch and flyspeck are separate diseases that often occur together on apple and pear fruit during late summer. This fact sheet will help you better understand, identify, and control these diseases.   Download Article

Raspberry Disorder: Fire Blight

Author(s): M.F. Heimann, S.N. Jeffers A serious disease of apple and pear trees in the Midwest, fire blight also affects many other members of the rose family, including raspberry. Although still relatively rare on raspberries, this disease has become increasingly common on certain red raspberry cultivars in Wisconsin. Find out hot to spot, prevent, and […]

Plant Growth Regulator Use in Apples

Author(s): Teryl R. Roper Plant growth regulators (PGRs) can be used with some precision for thinning fruit, regulating growth and adjusting harvest periods for apples. These products are absorbed by plant cells, primarily through the leaves and fruit, where they interact with the bio-chemical “machinery” of the plant. They work by mimicking naturally occurring plant […]

Fruit Crop Pollination

Author(s): Teryl R. Roper For fruit to develop, pollen must be transferred from the anther to the stigma. Find out which crops require pollen from the flowers of a different cultivar to set fruit, and which can set fruit on their own (3 pages).   Download Article

Spotted Wing Drosophila

Christelle Guédot, UW-Madison Entomology Revised: 01/09/2015 Item number: XHT1237 Spotted wing Drosophila (SWD), Drosophila suzukii, is an invasive vinegar fly native to Southeast Asia.  It became established in Hawaii during the 1980’s, and was first discovered in the continental United States in California in 2008.  SWD quickly spread throughout the Pacific Northwest and Canada, and […]

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