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Weed control, management, ecology, and minutia
A six-year evaluation of the cumulative impacts of glyphosate impacts on orchard crops.
Brad Hanson
Published on: April 9, 2021
openaccess1
openaccess1

Article also published in California Weed Science Society Journal (March 2021 issue)

-Brad

 

Glyphosate is one of the most commonly used herbicides in orchard crops in California both in terms of treated acres and amount of active ingredient applied. Weed managers are generally familiar with the attributes of glyphosate as a postemergence herbicide. Duke and Powles (2008) published an article in Pest...

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Tags: crop injury (2), glyphosate (36), orchards and vineyards (100), weed control (105)
Focus Area Tags: Agriculture
Comments: 0
UCANR: Safeguarding abundant and healthy food for all Californians
Can Artificial Intelligence Help Growers Win the Weed Wars?
Gale Perez
  • Press contact: Lee Van Wychen
  • Posted by: Gale Perez
Published on: March 21, 2021
CUTLINE: First-generation, vision-based, intelligent cultivators are now available to help control weeds in specialty crops. (Photo courtesy of Steve Fennimore, University of California, Davis.)
CUTLINE: First-generation, vision-based, intelligent cultivators are now available to help control weeds in specialty crops. (Photo courtesy of Steve Fennimore, University of California, Davis.)

From the Weed Science Society of America (WSSA) HEADLINES • March 17, 2021

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WESTMINSTER, Colorado – March 17, 2021 – Weed control in vegetables, flowers and herbs can be incredibly labor intensive, experts with the Weed Science Society of America (WSSA) say. There are few herbicides available for these specialty crops, making hand weeding the “go to” process. Now, though, labor shortages are creating tough challenges for growers and driving food prices higher for consumers.

Could intelligent weeding...

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Public Value: UCANR: Safeguarding abundant and healthy food for all Californians
Tags: artificial intelligence (1), automated weeding (6), weed control (105)
Focus Area Tags: Agriculture, Pest Management
Comments: 1
UCANR: Safeguarding abundant and healthy food for all Californians
Adviser helps growers tackle orchard weed management
Gale Perez
Published on: March 18, 2021
Three-spike goosegrass is among the most challenging weeds in orchards. (Photo courtesy of Brad Hanson/UC Davis)
Three-spike goosegrass is among the most challenging weeds in orchards. (Photo courtesy of Brad Hanson/UC Davis)

From the Western Farm Press • March 17, 2021

By Lee Allen

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Recurring, multiple-resistance species are among the biggest challenges.

Brad Hanson gets down...

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Public Value: UCANR: Safeguarding abundant and healthy food for all Californians
Tags: herbicides (6), orchard. weed management (1), pre-emergence (3)
Focus Area Tags: Agriculture, Pest Management
Comments: 0
UCANR: Promoting economic prosperity in California
Harvest Weed Seed Control in California: Potential and Limitations
Konrad Mathesius
  • Author: Konrad Mathesius
  • Contributor: Thomas Getts
  • Contributor: José Luiz Carvalho de Souza Dias
  • Editor: Brad Hanson
  • Editor: Mark Lundy
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Published on: March 16, 2021
Chaff lining
Chaff Lining using simple plastic guides to funnel chaff into a narrow line. (photo: Mic Fels)

Concerns about a growing resistance to herbicides

In Mediterranean or arid climates, particularly in areas with marginal soils, crop rotations are often limited to a narrow range of hay, pasture, a handful of winter legumes, or rainy-season grasses. Arid conditions and weathered soils drove Australia's rainfed grain growers to adopt no-till strategies earlier than their counterparts in California. While beneficial from a water use perspective, successful no-till systems depend on herbicides to control weeds that were traditionally kept in check with tillage.

Dependence on herbicides alone in these systems has resulted in weeds with resistance to multiple modes of action. In Australia, there is one...

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Public Value: UCANR: Promoting economic prosperity in California
Tags: harvest weed seed control (1), integrated weed management (13), Italian ryegrass (4), wheat (4)
Focus Area Tags: Agriculture
Comments: 1
Managing herbicide resistance with electric weed control
Gale Perez
Published on: March 11, 2021
Figure 1. Electric weed control unit manufacturer by Zasso operating at Lewis Brown Research Center in Corvallis, OR. The electricity is applied through the metal probes. The electric resistance heats up the plant, producing steam.
Figure 1. Electric weed control unit manufacturer by Zasso operating at Lewis Brown Research Center in Corvallis, OR. The electricity is applied through the metal probes. The electric resistance heats up the plant, producing steam.

From the Weeders of the West (WoW) blog ∴ March 11, 2021

Marcelo Moretti is a Professor in the Dept. of Horticulture at Oregon State University and an alumnus of UC Davis and California State University, Fresno.

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Managing...

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Tags: electricity (3), herbicide resistance (89), organic weed control (18)
Focus Area Tags: Agriculture, Pest Management
Comments: 0
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