- Posted by: Gale Perez
Sterile Pollen Technique Shows Promise for Palmer Amaranth Weed Control
Newly published research provides a novel and sustainable weed-management strategy
WESTMINSTER, Colorado – 22 May2024 – Recently published research in the journal Weed Science shows that a sterilization technique commonly used to control insect pests can be modified to control weeds that require pollination to reproduce. More specifically, the researchers determined that employing a sterile pollen technique (SPT) could effectively disrupt Palmer amaranth (Amaranthus palmeri S.) reproduction.
Palmer amaranth remains among the most detrimental weeds in North American agriculture,...
- Re-posted by: Gale Perez
From Growing Produce by | November 27, 2018
https://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. Watson...
- Author: Lynn M. Sosnoskie
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 indigenous. While it may be convenient to lump all of the genus Amaranthus together when considering weed management options, proper identification is important for understanding the potential for crop yield loss (not all amaranths were created equal with respect to competitiveness) and the possibility of herbicide resistance (populations of Palmer amaranth with resistance to glyphosate have been confirmed in the...
- Author: Lynn M. Sosnoskie
- Author: Brad Hanson
- Author: Ted Webster
- Author: Stanley Culpepper
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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 produce viable seed and re-infest fields.
Insufficient control of herbicide-resistant weeds could facilitate the establishment and spread of undesirable traits.
Introduction:
Weed pressure, and the resulting competition for water and nutrients, can significantly impact crop establishment, growth, yield and harvest. Furthermore, there is some concern among growers that non-managed weeds may support...
- Author: Lynn M. Sosnoskie
- Author: Stanley Culpepper
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 consider using additional mechanical (i.e. tillage) and cultural (i.e. cover crops) weed management strategies. Small plot experiments conducted in Georgia between 2008 and 2010 showed that the use of deep-tillage plus a heavy rye cover crop, when paired with a herbicide program consisting of both residual and POST-applied...
