Winter and summer annual marestail (horseweed) produces about 200,000 seeds per plant that can travel up to 400' by wind. Marestail germinates more in the fall than any other time and goes dormant ...

Glyphosate-resistant horseweed (or marestail or Conyza canadensis) has been confirmed throughout Delaware, Maryland and New Jersey. Horseweed is a winter annual weed. Emergence begins in the fall and ...

Horseweed is an increasingly problematic weed in soybean because of the frequent occurrence of glyphosate-resistant (GR) biotypes. The objective of this study was to determine the influence of crop ...

WESTMINSTER, Colorado – November 19, 2021 – Horseweed is one of the most common and most troublesome weeds in soybean production – shown to cause yield losses of up to 39 percent in the Midwest ...

One morning last summer, University of California Cooperative Extension vineyard weed control adviser John Roncoroni displayed a horseweed plant that had grown to more than 10 feet tall in a Yolo ...

A team of scientists was able to follow molecules of the glyphosate-based Roundup herbicides as they entered a resistant weed and to discover exactly how the plant disarms it. In a new paper, they ...

Controlled-environment experiments were conducted to predict the dispersal distance of horseweed seed. Seed were released from a fixed height and collected at three distances from the introduction ...

BROOKINGS - In 2010, glyphosate-resistant Horseweed or Marestail was identified in South Dakota, which did not come as a big surprise to plant scientists, explained Paul O Johnson, SDSU Extension ...

WEST LAFAYETTE, Ind. - A new Purdue University Web page offers farmers general information and educational materials on dealing with horseweed, a plant that is infesting parts of Indiana's cropland.

As everyone knows, the pharmaceutical industry is struggling to deal with bacteria that have become resistant to common antibiotics. Less well known is the similar struggle in agribusiness to deal ...