NDSU Extension Service
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The spotted-wing drosophila has been detected in North Dakota for the first time. It attacks fruit crops, including cherries, blueberries, raspberries, blackberries, peaches, nectarines, apricots and grapes. Unlike native fruit flies, the spotted-wing drosophila does not require damaged fruit to infest. However, it is very difficult to detect because many native fruit flies resemble the spotted-wing drosophila and the insect is very small.
Hornets (yellow jackets) belong to the family Vespidae. All yellow jackets sting and their stinging behavior is considered a defensive reaction when the colony is threatened. They can sting more than once because their stinger stays with the insect. Yellow jackets are more aggressive during August and September and more likely to sting. Although yellow jackets are a beneficial insect because they feed on other insects, they often become a pest problem when nests are located near homes, schools, picnic areas or playgrounds. (Prairie yellow jacket photo by W. Cranshaw, CSU, Bugwood.org)
If you need to spray a flowering crop with an insecticide or any other pesticide, please read, understand and follow the label to protect pollinators against pesticide poisoning or spray drift.
(Photo by Janet Knodel)
There have been reports of birch trees with dead or dying tops. The damage probably is caused by bronze birch borers. Symptoms of bronze birch borers are D-shaped exit holes on the branches or stems just below the dead area or stems that have a “muscled” appearance.
Ticks are external parasites that feed on blood. Once engorged with a blood meal, a tick will drop off its host to mate, lay eggs or continue development. Ticks require high humidity to survive and do not do well on lawns or fields that are routinely exposed to direct sunlight. There are some pesticides that are effective for controlling ticks. (CDC photo of an American Dog Tick)
The NDSU small grain disease forecasting website is now activated for the season. The website is mobile friendly. This website provides information on the risk of infection for tan spot, Septoria blotch and leaf rust. The site also provides information on Fusarium head blight risk at the flowering stage of wheat. This risk information is based on weather conditions associated with the NDAWN weather network locations. Individuals should pick the weather station closest to their fields, plus the growth stage of the crop and then click on "get forecast." For those individuals who can’t access this information on a computer, the forecasts are summarized in a recorded update at (888) 248-7382 or (701) 231-6601 in the Fargo area. (USDA photo)
Each season brings new challenges and pest problems in crop production. One way to stay informed and effectively manage any problem is to sign up for the weekly “Crop and Pest Report.” Each issue of the report contains valuable information about insect and disease problems, pest alerts, integrated pest management strategies, pesticide updates, agronomy and fertility issues, horticulture problems, reports from the NDSU Plant Diagnostic Laboratory and a weather outlook. (Photo of a soybean research plot at Carrington REC)
Annuals and perennials are an excellent source of color and accent to North Dakota landscapes. They come in different colors, sizes and varieties. Plants can be chosen for shady, sunny, dry or wet locations. (Jack Frost Perennial photo by NDSU Extension Service)
The National Weather Service says some areas of North Dakota may see flooding this spring. Are you prepared? Being prepared will help minimize the damage if you do get flooded. Your planning should include knowing how to protect your family, property and livestock. Check your sump pump, floor drains and electric generator if you have one. (NDSU Photo)