Diseases & Disorders
All Diseases & Disorders Content
Dairy Calf Respiratory Disease: Treatment in the Aftermath of Cold Weather
Cold weather is not just hard on the people taking care of animals, it can be tough on the animals themselves. Consider respiratory disease (pneumonia) in dairy calves.
Sawyer Beetles and Pine Wilt Disease
A sample came in from a recently felled Scotch pine tree down in Southeastern South Dakota. The hole and sawdust is due to a sawyer beetle that had infested the tree.
Fall Yard and Garden Cleanup
Before the snow falls, a few tasks can help make for a healthier yard and garden next year.
Ash Tree Issues
Ash flower galls are appearing on the twigs of ash throughout the state. The brown to black “balls” hang in clusters beneath the branch shoots. The galls are due to the feeding activity of the ash flower gall mite (Eriophyes fraxiniflora) and this mite only feeds on the male flowers of ash.
Aphids On Trees
Aphids are appearing on many trees at this time of year and their activity is generally noticed by the abundance of honeydew they excrete on the lower leaves and any plants or objects beneath the tree.
Cottonwood Galls
Just about every year I receive samples of fallen cottonwood leaves with a “bump” at the base and the first one for this year was from Winner. This is the cottonwood petiole gall formed by the feed activity of a very small green aphid.
How to Prevent Iron Deficiency in Spring Greenhouse Plants
At this time in the growing season, Iron (Fe) deficiency symptoms are appearing among bedding plants and other spring greenhouse plants. The main symptom of Iron (Fe) deficiency is Chlorosis or yellowing, usually starting at the shoot tip and newly developed leaves.
5 Things Hog Producers Should Know: Flu at Swine Exhibitions
Every year, thousands of youth across the country raise pigs and show them off at local exhibitions and county and state fairs. These experiences allow young people to learn about animal care and management, and also allow the public the rare opportunity to observe pig care and behavior.
Wet Weather Leads to Tomato Problems
Most of the questions that have been coming in lately, and also earlier this summer, relate to tomato problems. Despite early predictions that this summer was going to be dry, many areas have received above average rainfall with many parts of South Dakota far exceeding typical rainfall amounts in the month of August. Many gardeners received 5 to 8” of rain or more in the first three weeks of August alone.
Leaf Blotches On Trees
I am receiving pictures and samples of basswood and linden leaves. This is a common occurrence at this time of year, and there are several possible reasons for the discoloration and premature falling of these leaves.