One of the worst enemies of fall allergy sufferers is ragweed pollen. Because its pollen is so efficient in triggering severe cases of hay fever, Delena Tull described the giant ragweed as “the most ...

WEST LAFAYETTE, Ind. - Farmers who spot giant ragweed in their fields should apply a post-emergent herbicide before the infestation becomes unmanageable, even if no other weeds have appeared, two ...

WEST LAFAYETTE, Ind. — Giant ragweed soon could cast a giant shadow on the world's most popular herbicide. Researchers at Purdue and Ohio State universities have confirmed glyphosate-resistant giant ...

Giant ragweed seeds have high nutritional value, consisting of 47% crude protein and 38% crude fat, and may be an important food source for rodent and invertebrate populations in agricultural and ...

Q: My property has been invaded by giant weeds that can get 10 feet tall. Each of their big leaves are divided into three pointed lobes. I saw some of these last year and they produced seedy, ...

Kochia and giant ragweed are formidable broadleaf weeds that share a variety of similarities, making them great candidates to scout for and manage in tandem. Learn how chemical and cultural practices ...

From left: Felipe Faleco, University of Wisconsin-Madison, hands a bag of PPO-resistant giant ragweed seeds to Pat Tranel, University of Illinois Urbana-Champaign. The team identified the first cases ...

If you grow corn or soybeans in the Upper Midwest, you’ve probably battled giant ragweed. Now, a new survey published in the journal Weed Science offers insights into the distribution and management ...

Here’s my former student, Bill Stangler, standing next to a very tall plant that we found growing in great abundance on a big sandbar along our beautiful Congaree River, not too far from Columbia. Now ...

Three studies were conducted in 1999 and 2000 to determine whether acetolactate synthase (ALS)-resistant common ragweed and giant ragweed biotypes were present in Ohio. Results of field studies ...

AUSTIN -- If you are new to Central Texas, welcome to ground zero for allergies. The next big one on the radar is ragweed season. Even though it's still more than a month away, the tell-tale signs ...

PORT ANGELES — Think David and Goliath. Think Jack and the giant. Think St. George and the dragon. Lila Frisch has slain the mammoth ragweed that towered 9 feet over her garden. “I have it spread out ...