Researchers Find New Information on Palmer Pigweed
Recently,
experts in the glyphosate arena discovered a new mechanism of resistance by
which plants thwart herbicide applications.
Southeast
Farm Press
reported on these findings and its impact on the rapid spread
of glyphosate-resistant Palmer pigweed. Pollen from pigweed plants can easily
travel 300 to 400 feet in a cropping season. This explains why some growers may
see a small patch of problem weeds one year and a field of resistant weeds the next.
What this
means for producers is that it is even more important to diversify and attack weeds with
several different tools. Rotating crops and herbicide modes of action are two
of the most effective ways to combat resistance. Using a pre-emergence, residual
herbicide helps employ another mode of action other than glyphosate and helps
control weeds before they become established competition for crops.
Syngenta
recommends using a product like Prefix® or Flexstar® GT herbicides in soybeans
or Reflex®, Envoke® and Sequence® herbicides in cotton.
Palmer
pigweed may be "the perfect weed" by some definitions, but staying ahead of the
fight with a proactive management plan and a multi-pronged approach is one of the best tools a grower
can employ.
Important:
Always read and follow label instructions before buying or using Syngenta
products. The instructions contain important conditions of sale, including
limitations of warranty and remedy. Envoke®, Flexstar® GT, Prefix®, Reflex®, Sequence® and the
Syngenta logo are trademarks of a Syngenta Group Company. Flexstar GT and
Reflex are not currently registered for sale or use in all states. Please check with your state or local
extension service before buying or using these products. Reflex may be used on cotton in AL,
AR, LA, MS, MO and TN in accordance with the Special Local Needs provisions of
the EPA under a FIFRA Section 24(c) registration. You must have a copy of the
approved 24(c) registration in your possession in order to use Reflex, and you
must comply with all of the limitations for use set forth in the 24(c)
registration.