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Tag "Palmer amaranth"

Iowa: Is Palmer Pigweed Spread in a ‘Lag Phase’?

Iowa: Is Palmer Pigweed Spread in a ‘Lag Phase’?

👤By Bob Hartzler, Iowa State University 🕔Jun 23, 2017

The introduction and spread of Palmer amaranth in Iowa undoubtedly will have a significant impact on crop production and weed management in the future.  However, since the first infestations were identified I’ve been intrigued by what seemed odd behavior for

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Iowa: Weed Quiz – Can You ID These 6 Different Pigweeds?

Iowa: Weed Quiz – Can You ID These 6 Different Pigweeds?

👤By Bob Hartzler, Iowa State University 🕔Jun 21, 2017

The six weedy Amaranthus species at the weed garden have grown quite a bit, but I’m not sure how much easier it is to differentiate a few of the species. Can you tell which is which?

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Pennsylvania Corn, Soybeans: Midseason Control of Marestail, Palmer Pigweed, Waterhemp

Pennsylvania Corn, Soybeans: Midseason Control of Marestail, Palmer Pigweed, Waterhemp

👤By William Curran and Dwight Lingenfelter, Pennsylvania State University 🕔Jun 21, 2017

As we proceed through the growing season, there are a few issues surrounding weed control and herbicide use. Here are some items to consider.

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Georgia Soybeans: 3 Thoughts on Weed Management

Georgia Soybeans: 3 Thoughts on Weed Management

👤By Eric Prostko, University of Georgia 🕔Jun 19, 2017

Just got done rating some of my soybean weed control plots.  Thought I would pass along these few thoughts.

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Is Palmer Amaranth Developing Traits That Make It Difficult to Control?

Is Palmer Amaranth Developing Traits That Make It Difficult to Control?

👤From the Weed Science Society of America 🕔Jun 16, 2017

Palmer amaranth is widely considered to be one of the most damaging and difficult to control agricultural weeds in North America. A lot of time and attention has been devoted to herbicide-resistant Palmer amaranth and the significant yield losses it

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Pennsylvania: Palmer Amaranth and Waterhemp Beginning to Emerge

Pennsylvania: Palmer Amaranth and Waterhemp Beginning to Emerge

👤By Annie Klodd, Pennsylvania State University 🕔Jun 15, 2017

Pigweed species have begun emerging for the season in Pennsylvania, including reports of Palmer amaranth and waterhemp in southeastern Pennsylvania. It is important to scout for these invasive weeds now, and control them before they reach 4 inches tall.

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Kansas Soybeans: Postemergence Marestail and Pigweed Control

Kansas Soybeans: Postemergence Marestail and Pigweed Control

👤By Dallas Peterson and Doug Shoup, Kansas State University 🕔Jun 13, 2017

Controlling marestail or pigweeds postemergence in soybeans is always easier when the weeds are small – less than 2 inches tall is preferable for good control. Once weeds get taller, they are often considerably more difficult to control. However, conditions

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Illinois Weeds: New Seed Tests for Palmer Amaranth Identification

Illinois Weeds: New Seed Tests for Palmer Amaranth Identification

👤By Diane Plewa and Suzanne Bissonnette, University of Illinois 🕔Jun 13, 2017

Are you having trouble with Palmer amaranth? We have something new for you. NEW Palmer ID test available this year: We spent a long winter optimizing a new assay in collaboration with Dr. Pat Tranel’s lab to aide in Palmer

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Texas Blacklands Cotton: Out of the Woods for Thrips Damage, Start Scouting for Fleahoppers

Texas Blacklands Cotton: Out of the Woods for Thrips Damage, Start Scouting for Fleahoppers

👤By Xandra Morris, Texas AgriLife 🕔Jun 8, 2017

Most cotton is out of the danger zone for thrips damage. After about the 5-true leaf stage, thrips will still be present and feeding but the rapid growth of the cotton negates their economic impact. Scouting for fleahoppers should begin

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Weed Resistance: Make Smart Herbicide Decisions, so History Doesn’t Repeat Itself

Weed Resistance: Make Smart Herbicide Decisions, so History Doesn’t Repeat Itself

👤By Shane Curry, University of Georgia 🕔Jun 7, 2017

In 2005, the first pigweed resistant to glyphosate (Roundup) was confirmed in middle Georgia. At that time, it was the first confirmed case of pigweed resistant to glyphosate in the world. The resistance was localized to a few fields on

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