Weeds & Invasive Plants
All Weeds & Invasive Plants Content
Glyphosate Resistance in Soybeans
Many weeds have developed glyphosate resistance in the past few years. Many producers who use Roundup Ready soybeans have a temptation to rely on glyphosate products to control post-emergent weeds, causing them to potentially become resistant to the chemical. If producers are unable to gain control over the weed, then weed competition will cause a significant yield loss.
SDSU Research Shows Effects Of Volunteer Corn In Corn And Soybeans
In 2007, researchers at South Dakota State University indicated that volunteer corn is much less competitive in corn than soybean. The South Dakota study (Alms et al. 2007) evaluated the full season effect of a range of volunteer corn densities (800-14,000 plants/acre) on both corn and soybean and reported yield losses that ranged from 0% to 13% in corn and 0% to 54% in soybean.
Spring Dandelion Control In Soybeans
Dandelion has become much more of a problem as farming practices have changed. Less tillage and increased use of glyphosate resistant crops along with reduced use of residual herbicides have allowed some perennial weeds such as dandelion to prevail.
Soybean Production: Cost-effective pest management practices
Chemicals were one of the most expensive individual costs in soybean production, behind only to seed in the non-land cost category. The average cash-rent soybean production farms incurred a crop chemical cost of $39/ac in 2015, an 88% increase from 2010.
All Straight Dicamba Products Now Restricted Use in South Dakota
Starting April 30, 2018 all dicamba products that are not a mixture but instead straight dicamba are restricted use in South Dakota. This will mean all applicators will need to keep spray records of use and place of application.
Alternatives to Postemergence Dicamba Applications
Cancellations of three dicamba labels on June 6, 2020 by the U.S. Environmental Protection Agency, left many farmers looking for options for effective weed control this summer.
Removing Mature Shelterbelts From Grasslands
Under what circumstances would removal of mature shelterbelts be warranted? This is a common question often asked in wildlife and conservation circles.
UPDATE: The Environmental Protection Agency Provides Further Guidance Regarding the Previous Suspension of All Sales and Application of Dicamba Products
June 10, 2020
On June 3, the United States Court of Appeals for the Ninth Circuit issued a decision to vacate the registration of three dicamba products including Xtendimax, Engenia, and FeXapan for over the top use on soybeans.
South Dakota Department of Agriculture Suspends All Sales and Application of Dicamba Product
June 08, 2020
On June 3, the United States Court of Appeals for the Ninth Circuit issued a decision to vacate the registration of three Dicamba products including Xtendimax, Engenia, and FeXapan for over the top use on soybeans.
SDSU Extension Provides Leafy Spurge and Noxious Weed Management Recommendations
May 22, 2020
One of the many challenges producers face each year is weed control. Leafy spurge, in particular, can be difficult to manage.