Forage
All Forage Content
Alfalfa Weevil Activity Prediction Update: June 1, 2020
Activity of alfalfa weevils has been documented in many areas of South Dakota during the last week. At this time, the entire state has accumulated enough degree days for alfalfa weevils to be active.
Alfalfa Weevil Activity Prediction Update: May 4, 2020
Temperatures continue to increase across South Dakota and the degree days are rapidly accumulating. With the exception of areas around Selby, Sisseton and Brookings, alfalfa weevil activity is likely in South Dakota.
Dealing With Alfalfa Winter Kill
Winter kill and general stand loss of alfalfa has specifically been of concern in many parts of South Dakota the last two years. Most observed alfalfa winter kill is due to low, wet or flooded areas where plants were suffocated and died over the winter.
Alfalfa Weevil Activity Prediction Update: April 27, 2020
It is finally warming up across much of South Dakota and that means the degree days are beginning to accumulate more rapidly. Alfalfa weevil activity is likely in areas around Rapid City, Hot Springs, Cottonwood, Mission, Pierre, Winner and Vermillion.
Fertilizing Forages in South Dakota
Spring is a busy time for South Dakota farmers and ranchers with planting, calving, and other field preparations. Soil sampling and fertilizing pastures, alfalfa, or other forages might be overlooked.
Alfalfa Weevil Activity Prediction Update: April 20, 2020
During the last week, the colder weather that we experienced across South Dakota resulted in very little degree day accumulation. However, in some areas enough degree days have accumulated to potentially lead to adult activity within alfalfa fields.
Alfalfa Weevil Activity Prediction Update: April 14, 2020
The alfalfa weevil is a major spring insect pest of South Dakota alfalfa. Before 2018, this insect was reported as having large populations throughout much of South Dakota. However, during 2018 and 2019, we received fewer reports of alfalfa weevils, which may have been a result of the cooler and wetter spring conditions that were observed.
Fall Noxious Weed Control
Fall weed control can give the best weed control, but it also can be a poor time. If the noxious weeds were sprayed or clipped earlier this summer, and there is good weed growth now, this would be an excellent time to spray these weeds and get a good kill.
Scouting for Grasshoppers in Pasture and Alfalfa
For 2019, we have either received reports of very high grasshopper numbers or of very low or nearly absent populations. Most reports of high populations have originated from areas near rivers and other waterways. This suggests that the rich foliage along the banks of waterways has provided excellent habitat for grasshoppers and has boosted their populations in those areas.
Managing Flooded Alfalfa
As floodwaters rise again in parts of South Dakota, spring planting seems to feel further and further away. One crop that is often overlooked in the hustle and bustle of the approaching planting season is alfalfa.