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. […]

Espalier

Are you interested in getting higher yields of fruit, want a fruit tree but don’t have space for a regular-sized one, or just want an interesting pruned plant as a focal point in your garden? There is a horticultural technique involving pruning and training that can accomplish all of these goals. Read this article to learn more about the classic technique of espalier…

Black Stem Borer

Black stem borer (BSB), also known as the alnus ambrosia beetle, is an invasive beetle from Asia that was accidentally introduced into central Europe and North America. BSB has traditionally been considered a serious pest of nursery and landscape trees, but has also been reported as a pest of fruit crops. This factsheet describes the appearance, life cycle, scouting suggestions and control methods of this important pest.

Kiwifruit, Actinidia spp.

What’s brown and fuzzy all over and green inside? Well, the kiwifruit, of course. This Chinese fruit was popularized when it was imported into New Zealand, renamed kiwifruit instead of Chinese gooseberry, and developed as an export crop. Today this fruit crop is grown in many places worldwide, but there is more than just the kind found at the grocery store. To learn more about kiwifruit, read this article…

African Fig Fly – Pest Alert

Pest Alert Authors: Janet van Zoeren and Christelle Guédot, UW-Madison Entomology Last Revised: 04/17/2019 X-number: XHT1267 The African fig fly (AFF), Zaprionus indianus, is an invasive vinegar fly closely related to flies in the genus Drosophila [which includes the common vinegar fly (also sometimes called the common fruit fly) and spotted-wing drosophila (SWD)]. AFF is […]

San José Scale

This factsheet describes the symptoms, life cycle, monitoring methods and control of San José scale (Diaspidiotus perniciosus). This fruit tree pest can be found in most fruit growing regions of the United States. In well-managed orchards, populations of San José scale are generally too low to cause economic damage. In poorly managed orchards however, San José scale can get established and be difficult and expensive to control.

Serviceberry, Amelanchier spp.

If you’re looking for a small tree with attractive white blossoms in spring and small fruits that can be food for animals or humans, consider one of several species of serviceberry. There are a number of plants in the genus Amalanchier that are graceful trees or shrubs that can provide year-round ornamental interest in the landscape. To learn more, read this article…

Sawflies

Sawflies are a group insects related to wasps that get their common name from the saw-like appearance of the ovipositor, which females use to cut slits in stems or leaves to lay their eggs. The plant-feeding larvae often look like caterpillars or slugs, and many are quite noticeable because they often stay together to feed in groups and quickly cause noticeable defoliation on their hosts. Learn more about sawflies in this article…

Eastern Filbert Blight

Eastern filbert blight is a potentially serious fungal disease found throughout the United States, including Wisconsin. It affects Corylus species, commonly known as hazelnuts or filberts, causing cankers on branches and trunks. Symptoms and management are described in this factsheet.

Spotted Lanternfly

Spotted lanternfly (SLF) is an invasive planthopper native to China, India, and Vietnam. It was first detected in the U.S. in Pennsylvania in 2014, and due to its highly invasive nature, it appears to be spreading rapidly. SLF has a large host range and potentially could greatly impact the grape, tree fruit, plant nursery and timber industries in the U.S. Learn about what to watch for with this new pest.

Watercore of Apple

Author(s):T.R. Roper Watercore of apple is a physiologic disorder. The fruit tissue’s abnormal condition is a response of some apple cultivars to adverse environmental conditions—not to a disease-causing organism. Watercore is more common in warm, arid regions, but it occurs in Wisconsin often enough to concern apple growers. Find out more about this apple disorder […]

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

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