UCCE Master Gardeners of San Joaquin County
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UCCE Master Gardeners of San Joaquin County

Posts Tagged: Palmer amaranth

Field scouting guide: Palmer amaranth

Poor control of Palmer amaranth can result in a significant infestation late in the season and crop failure. Photos by the late Dr. Ted Webster, Research Agronomist with USDA-ARS

From Growing Produce by Karli Petrovic | November 27, 2018https://www.growingproduce.com/vegetables/field-scouting-guide-palmer-amaranth/ Field Scouting Guide: Palmer Amaranth This month's field scouting guide concentrates on Amaranthus palmeri S....

Posted on Tuesday, December 4, 2018 at 9:42 AM
Tags: Palmer amaranth (7), weed (25), weed control (79)
Focus Area Tags: Agriculture Pest Management

A quick guide to identifying some pigweed species found in California

Prostrate pigweed leaves 2

According to the CalFlora website (http://www.calflora.org/), 21 species of amaranths occur (to some extent) in California. While many are non-native, a few, including prostrate pigweed (Amaranthus blitoides) and Palmer amaranth (Amaranthus palmeri), are...

Posted on Monday, June 18, 2018 at 12:29 PM

Compensatory growth and seed production: A tale of two weeds

2010 palmer amaranth

Talking Points: Weed control failures can and do occur. Weed control failures occur for many reasons, including improper treatment applications and plant size and development at the time of treatment. Plants that aren't completely controlled can...

Posted on Tuesday, January 14, 2014 at 11:40 AM
  • Author: Lynn M. Sosnoskie
  • Author: Brad Hanson
  • Author: Ted Webster
  • Author: Stanley Culpepper
  • Author: Tim Grey

Deep tillage and cover crops for Palmer amaranth control

Extension agent in Palmer amaranth

Glyphosate-resistant (GR) Palmer amaranth is, currently, the most significant weedy pest of cotton grown in the SE US. In order to reduce population size, maximize herbicide efficacy and prevent the development of further resistances, cotton growers must...

Posted on Friday, May 3, 2013 at 4:56 PM
Tags: agronomic crops (31), cover crops (7), Palmer amaranth (7), rye (1), tillage (1)

Palmer amaranth seed longevity

Seed viability Palmer

Since it was first identified in 2004, glyphosate-resistant Palmer amaranth has become the most significant weedy pest of cotton in the Southeastern United States. When acceptable control is not realized, and Palmer amaranth is allowed to set seed,...

Posted on Wednesday, May 1, 2013 at 3:16 PM

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