UC Weed Science

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Harvesting water hyacinth
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Costs to manage invasive aquatic weeds in the Delta

December 6th, 2018
Attached is a presentation on the economics of controlling invasive aquatic weeds in the Sacramento-San Joaquin Delta. This was presented by Karen Jetter at the Delta Region Areawide Aquatic Weeds Program (DRAAWP) stakeholders meeting in October 2018.
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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.
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Field scouting guide: Palmer amaranth

December 4th, 2018
From Growing Produce by Karli Petrovic | November 27, 2018 https://www.growingproduce.com/vegetables/field-scouting-guide-palmer-amaranth/ This month's field scouting guide concentrates on Amaranthus palmeri S. Watson (Palmer amaranth).
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Photo 1. Weeds in untreated
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New weed control options for leeks

November 27th, 2018
By Richard F Smith
Richard Smith is a University of California Cooperative Extension Farm Advisor in Monterey County. Leeks are in the onion family and are increasingly important crop in Monterey County. In 2017, there were 475 acres produced worth $8.6 million.
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