Ongoing research

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silicon
Topics in Subtropics: Article

Silicon as a Nutrient for California Fruit Trees

August 12, 2015
By Ben A Faber
Silicon is currently under consideration for elevation to the status of a "plant beneficial substance by the Association of American Plant Food Control Officials (AAPFCO).
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A cabbage white butterfly, Pieris rapae, nectaring on catmint. (Photo by Kathy Keatley Garvey)
Bug Squad: Article

Cabbage White Butterfly Not So Bad?

August 11, 2015
By Kathy Keatley Garvey
It's the butterfly we're supposed to hate. That would be the cabbage white butterfly, Pieris rapae. Its larvae or cabbageworms are pests of our cole crops, including cabbage, kale and mustard. Pests? You bet.
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A honey bee gathering pollen from a California golden poppy, California's state flower. The honey bee originated from Africa. (Photo by Kathy Keatley Garvey)
Bug Squad: Article

Celebrating the Honey Bee

August 10, 2015
By Kathy Keatley Garvey
Confusion exists as to whether National Honey Bee Day is Aug. 15 or Aug. 22. The group that formed National Honey Bee Awareness Day says its Aug. 15. Pennsylvania Apiculture, aka PennApic, launched the National Honey Bee Awareness Day in 2009. The U.S.
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UC Weed Science (weed control, management, ecology, and minutia): Article

Do your weeds come from your boots?

August 10, 2015
By Chris J McDonald
We are all working very hard to get rid of weeds once we see them, but often I forget to ask how that plant got there in the first place. There are 4 main ways for weeds to appear on your property: germination from the seed bank, the wind, animal dispersal, and movement by people.
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chloride toxicity avocado
Topics in Subtropics: Article

Putting Fertilizer Chloride in Perspective

August 10, 2015
By Ben A Faber
Especially when there are no winter rains to leach accumulated salts from the root zone of trees, there is major concern about increasing the levels of salts going into the root zone.
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predatory mite
Topics in Subtropics: Article

Biocontrol and Timing of Augmentative Releases

August 10, 2015
By Ben A Faber
TYPES OF NATURAL ENEMIES Parasites, pathogens, and predators are the primary groups used in biological control of insects and mites (Table 1). Most parasites and pathogens, and many predators, are highly specialized and attack a limited number of closely related pest species.
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A praying mantis is sprawled out on a hummingbird feeder, as a hummer takes a drink. (Photo by Kathy Keatley Garvey)
Bug Squad: Article

Watch Out!

August 7, 2015
By Kathy Keatley Garvey
The hummingbirds seemed apprehensive. They'd fly to the feeder, stop in mid-air, and turn back. What was keeping them from the feeder? A closer look revealed what the casual observer wouldn't notice: a praying mantis.
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IMG 1956
Topics in Subtropics: Article

Sun Burn to Grafted Trees

August 7, 2015
By Ben A Faber
Field topworking avocados and citrus can be a prolonged process that can take two years of maintenance before the trees are productive. Often, it's easier and cheaper to just start off with a new tree.
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A honey bee pollinating an apple blossom. (Photo by Kathy Keatley Garvey)
Bug Squad: Article

What Do You Know About Neonics?

August 6, 2015
By Kathy Keatley Garvey
What do you know about neonicotinoids, aka neonics? An educational opportunity to learn more about them--the truths and the myths--will take place on Wednesday, Sept. 9 at the University of Caifornia, Davis, and you're invited. It's open to the public.
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