UC Weed Science (weed control, management, ecology, and minutia)

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Figure 1. Ligule and auricle on a rice plant. Watergrass species do not have ligules and auricles.
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Weedy Rice Scouting and Reporting 2022

August 4, 2022
By Whitney B Brim-Deforest
It is getting close to the time we need to scout for weedy rice. Our team will be scouting known infested fields that are planted to rice this year. Troy Clark, our Rice Junior Specialist, will be starting in the next few weeks, and will be reaching out to growers and PCA's.
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Clusters of dark spots on a satellite image of a green pasture indicate an infestation of an undesired plant. The clusters are most dense on the west side of the pasture.
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A different perspective on weeds

August 1, 2022
Several months ago, I got a question about weeds in an irrigated pasture. The mystery plants were slowly but surely taking over a significant proportion of the pasture, and the owner asked me to visit the property to identify the plants and options to control them.
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Figure 4. UC IPM "Filaree" webpage
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Useful Weed Identification Tools

July 18, 2022
By Karey Windbiel-Rojas
The UC Statewide Integrated Pest Management Program's website contains many useful features to help identify pests and problems in the garden and home. One such feature is the Weed Gallery, which contains hundreds of images and management tips for more than 150 common weeds found in California.
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Bryan Brown, integrated weed management specialist for New York State Integrated Pest Management, stands in a soybean field that lost 50% of its yield to weed competition, even after several herbicide applications.
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Timing is everything for weed management

July 10, 2022
From the Cornell Chronicle--June 22, 2022 Farmers can tailor their efforts to control weeds more effectively by pinpointing when a particular weed will emerge, according to a new Cornell study.
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