We have recently been observing certain areas of South Dakota that are experiencing high grasshopper population densities. The first area where grasshoppers were observed that exceeded the thresholds of 21-40 grasshoppers per square yard in field margins and 8-14 grasshoppers per square yard within the fields was near Fort Thompson.
Most of the corn in the state is at tasseling. This growth stage is also when most common fungal diseases begin to develop. Currently, common rust and common smut are the main diseases being found in corn.
Many agronomy professionals attended the Integrated Pest Management School this year in Beresford, S.D. at the SDSU Southeast Research farm. There has been a growing interest in cover crops and the benefits of their influence on commonly grown cash crops in South Dakota.
As of July 13, 2017, 72% of South Dakota is in drought, a 15-point increase from last week. There was an expansion in severity from D0 through D3 categories in the state. Extreme drought now covers 10%, and includes 11 counties in the North Central Region.
Recent hail storms have brought crop injury in isolated parts of South Dakota. We always hope the old ‘white combine’ adage does not come true, but there is no stopping mother nature. For those effected by serious hail damage, sometimes the next steps are hard to determine.
As of July 5, much of Central and Western South Dakota is listed in Moderate to Severe Drought, with the North Central part of the state affected hardest. One tool to make these categories a bit more tangible is the Drought Termination and Amelioration Application developed by the National Oceanic and Atmospheric Administration (NOAA).
The annual Volga Farm Tour will be held on July 26, 2017 at 4:30 p.m. (CST) and will run till dusk. There will be continuous tours running throughout the afternoon, with each lasting about an hour.
SDSU Extension is devoted to meeting the needs of South Dakota farmers and ranchers in the state. If you are 18 years-of-age or older and farming or ranching is your occupation, please consider completing a 10-15 minute survey that would help us acquire information to design and implement future programs to serve farm and ranch families.
Nearly every season in South Dakota has periods of hot, dry weather in at least part of the state. If this hot and dry weather occurs during corn pollination and fertilization, negative effects on yield may be substantial. Yields may be reduced at any point in the growing season when water usage exceeds supply. Early season drought stress may reduce total plant size, ear size, and the number of rows of kernels on the ear.
Goss’s wilt was reported in a corn field at low incidence in Brown county. Goss’s wilt affects corn in two phases: the wilting phase and the leaf blight phase. The disease phase being observed at this time is the wilting phase.