Weeds, Diseases and Pests
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C 1212
Grape Sour Rot
Although grape sour rot can occur in drier climates, the disease complex tends to be especially problematic during wine grape ripening in wet, humid regions. Browning and disintegrating berries and the aroma of vinegar (acetic acid) are a few symptoms that characterize grape sour rot. Sour rot ultimately results in crop yield reduction as damaged berries often “shatter,” or fall off the clusters. Sorting out clusters with sour rot that are not suitable for winemaking causes a further reduction in return revenues as less wine is produced. Although it has only recently been a topic of defined research, sour rot is a prominent concern in Eastern U.S. vineyards as: (1) it is consistently observed in vineyards, particularly in white-berried cultivars; and (2) questions remain about how to best manage it, particularly with the threat of insecticide resistance development in targeted fruit flies.
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This is a new annual guide for managing diseases, insects, weeds, and wildlife in bunch grapes in the Southeast. This regional integrated pest management guide provides recommendations based on information from the manufacturer’s label and performance data from research and Extension field tests. This publication is intended for use only as a guide. Specific rates and application methods are on the pesticide label, and these are subject to change at any time.
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This publication summarizes the latest and most relevant information regarding the management of the bermudagrass stem maggot (BSM), including biological, cultural, physical and chemical mitigation strategies. In addition to information about how to control the pest, this bulletin provides detailed information about the history, identification, and biology of the bermudagrass stem maggot.
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Parasite resistance is an increasing problem in livestock species, including horses. Equine deworming practices have historically involved a six-week rotational deworming schedule. However, these practices have led to parasite resistance to many of our available dewormers. This publication addresses the current recommendations for deworming based on fecal egg counts, including why parasite resistance is increasing and how and when to assess fecal egg counts in horses.
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Tawny crazy ants (TCA), or Nylanderia fulva [Mayr], are one of a number of pest ant species that have been accidentally introduced to the U.S. mainland from abroad (Figure 1). The establishment and subsequent expansion of TCA have proven to be a major nuisance to property owners, disrupting ecological balance by outcompeting native ant species, negatively affecting various arthropod and vertebrate animal species, and becoming an economic pest. Examples of other invasive ants that have made their way to the U.S. since the late 1800s include the red imported fire ant (Solenopsis invicta), the Argentine ant (Linepithema humile), the bigheaded ant (Pheidole megacephala), the ghost ant (Tapinoma melanocephalum), the dark rover ant (Brachymyrmex patagonicus), and the Asian needle ant (Brachyponera chinensis), to name a few.
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This publication will educate pest management professionals about pesticides and instill vigilance in their handling and use. In order to understand how to use chemical pest control products responsibly, PMPs must have a basic understanding of the various definitions associated with pesticides, be able to interpret labels and material safety data sheets (including principles of toxicity), be aware of their own
safety, understand the mode of action (i.e., how pesticides work) of the various active ingredients they use, and be aware of differences in formulation types.|
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This publication contains information on Microdochium patch, an emerging disease in the state of Georgia. This circular contains the biology of the causal agent, as well as a detailed description of the disease symptoms (with detailed pictures), relevant up-to-date information on conditions favoring the disease, as well as cultural, genetic and chemical methods of control. The publication is aimed at turfgrass professionals, sod growers, consultants, county faculty, students, and the general public.
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Several dozen insect species infest food and non-food products of plant and animal origin commonly found in homes. Collectively, this group of insects is referred to as stored product pests. Most are small beetles or moths. For homeowners, often the first sign of a stored product pest infestation is the sudden, unexplained and then persistent presence of numerous insects in a particular area of the home.
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Imported fire ants interfere with outdoor activities and harm wildlife throughout the southern U.S. Ant mounds are unsightly and may reduce land values. Although fire ants do prey on flea larvae, chinch bugs, cockroach eggs, ticks and other pests, the problems they cause usually outweigh any benefits in urban areas. While it is not possible to eradicate this species, controlling fire ants is highly desirable. The best control programs use a combination of non-chemical and chemical methods that are effective, economical and least harmful to the environment.
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