Research Unveils Waterhemp Resistance Evolution Amid Herbicide Use Recent studies reveal that waterhemp can develop resistance to PPO-inhibiting herbicides from preemergent applications, not just postemergent ones. This poses new challenges for crop management.

Research Unveils Waterhemp Resistance Evolution Amid Herbicide Use #United_States #Madison #Weed_Science #Waterhemp #PPO_Inhibitors

Innovative Seed Impact Mills Show Promise in Combatting Herbicide-Resistant Weeds Recent research highlights the effectiveness of seed impact mills in controlling herbicide-resistant weeds like waterhemp in soybean fields, presenting a promising alternative for farmers.

Innovative Seed Impact Mills Show Promise in Combatting Herbicide-Resistant Weeds #United_States #Waterhemp #Seed_Impact_Mill #Herbicide_Resistance #Gilbert,_Iowa

Study Shows Seed Impact Mills Clobber Waterhemp Seed Viability « Agriculture & Animal Science# « Cambridge Core Blog Recent research shows promise for controlling herbicide-resistant weeds, such as waterhemp, in soybean fields by using a seed impact mill at harvest.

Read the latest blog from #WeedScience: Study Shows Seed Impact Mills Clobber #Waterhemp Seed Viability >> cup.org/4g6rsWQ

Planting Soybean Green Proves Effective for Waterhemp and Palmer Amaranth Suppression « Agriculture & Animal Science# « Cambridge Core Blog Recently published research in the journal Weed Science shows planting soybean into a green, living cover crop effectively suppresses two problematic Amaranthus weed species – waterhemp and Palmer ama...

Planting Soybean Green Proves Effective for Waterhemp and Palmer Amaranth Suppression - Read the blog here >> www.cambridge.org/core/blog/20... #weedscience #waterhemp #palmeramaranth #soybean #covercrops

Diflufenican Proves Promising to Control Herbicide-Resistant Waterhemp « Agriculture & Animal Science# « Cambridge Core Blog Diflufenican, a new mode of action herbicide for preemergence use in corn, demonstrates effectiveness as an integrated weed management strategy for multiple-herbicide resistant (MHP) waterhemp (Amaran...

New blog: #Diflufenican Proves Promising to Control Herbicide-Resistant #Waterhemp >> www.cambridge.org/core/blog/20... #weedtechnology

Waterhemp: Herbicide Resistant Plant Created by Chemical-Intensive Farming Competes with Crops - Beyond Pesticides Daily News Blog (Beyond Pesticides, December 15, 2022) Industrial agriculture has both created and amplified the spread of the now highly problematic waterhemp (Amaranthus tuberculatus) plant, according to research published this month in the journal Science. Over the last 80 years, the push to increase monoculture plantings, expand cropland, and utilize chemical fertilizers and pesticides has changed waterhemp from a tame riparian wild plant into an aggressive, weedy intruder able to compete with row crops like corn and soybean. “The genetic variants that help the plant do well in modern agricultural settings have risen to high frequencies remarkably quickly since agricultural intensification in the 1960s,” said study author Julia Kreiner, PhD with the University of British Columbia’s Department of Botany. “The types of changes we’re imposing in agricultural environments are so strong that they have consequences in neighbouring habitats that we’d usually think were natural.” To better understand how this plant went from a waterside obscurity to North America’s most notorious “weed,” researchers tracked the shifts occurring within the plants genome. Using data from herbarium samples first collected in 1828 until 2011, scientists sought out alleles (genetic mutations) that corresponded with agricultural intensification and analyzed the frequency of their occurrence over the nearly […]

#Industrial#agriculture has both created and amplified the spread of the now highly problematic #waterhemp plant. #waterhemp #weedcontrol #pesticides #herbicides #EPAfail #herbicideresistance #organic4life #organic #farming #environmentalprotection

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Agriculture makes the weed:
New #research published in @ScienceMagazine shows how the rise of modern agriculture has turned #waterhemp, into a problematic #agriculturalweed by mutations in hundreds of genes.
More 👉 www.bio.mpg.de/article/agriculture-make...
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Weeds Are Now Developing Resistance to Herbicides They've Never Been Exposed To - Beyond Pesticides Daily News Blog (Beyond Pesticides, October 13, 2021) Pesticide use in conventional chemical-intensive farming is so pervasive that weeds are developing resistance to herbicides they have never encountered before. According to research published in Plant and Cell Physiology and New Phytologist, the notoriously difficult-to-control weed waterhemp (Amaranthus tuberculatus) is outpacing commercial crops in its ability to detoxify after herbicide exposure. “This is probably the first known example where waterhemp has evolved a detox mechanism that a crop doesn’t have. It’s using a completely different mechanism, adding to the complexity of controlling this weed,” says Dean Riechers, PhD, study co-author and professor at University of Illinois. Researchers found waterhemp resistant to the chemical syncarpic acid-3 (SA3). SA3 is one of the earliest versions of a 4-Hydroxyphenylpyruvate dioxygenase (HPPD) inhibiting herbicide. HPPD inhibiting herbicides, which include herbicides like isoxaflutole and mesotrione, are selective (ie plant-specific) and break down amino acids that are required for plant growth and development. Corn generally tolerates HPPD-inhibiting chemicals, detoxifying them through different channels depending upon the specific type of HPPD herbicide. Weeds that grow in and around corn fields where these chemicals are regularly sprayed, like waterhemp, have likewise evolved the ability to detoxify HPPD-inhibitors, mostly mimicking the process that […]

Notoriously difficult-to-control weed #waterhemp is outpacing commercial crops in its ability to detoxify after herbicide exposure. #pesticides #herbicides #organic

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