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Hi, Please find out latest "VOL.

In this issue: Estimating Nitrogen Credits From Organic Matter Sources in Orchards Timing Ethylene Applications as a Function of Heat Unit Accumulation Summary of International Avocado Irrigation Trends The Avocado World has Lost a Star - Remembering Samuel Salazar-Garcia...

In this issue: Estimating Nitrogen Credits From Organic Matter Sources in Orchards Timing Ethylene Applications as a Function of Heat Unit Accumulation Summary of International Avocado Irrigation Trends The Avocado World has Lost a Star - Remembering Samuel Salazar-Garcia...

Citrus greening, or huanglongbing disease (HLB), is the most devastating disease for orange and grapefruit trees in the U.S. Prevention and treatment methods have proven elusive, and a definitive cure does not exist.

The IPM Hour is a monthly online seminar covering a variety of IPM-related topics and research. It's held the second Wednesday of each month at 12 noon Pacific Time and features two 20-minute presentations followed by 10 minutes of discussion each.

You may be surprised to learn that the signature of Abraham Lincoln on a Senate bill in July of 1862 put into motion actions and ideologies that would culminate in a nation-wide program that includes the UC Master Gardeners of Butte County.

There they were. Together. The scene: A honeybee (Apis mellifera) and a bumblebee (Bombus vosnesenskii) nectaring on a purple coneflower (Echinacea purpurea) in a UC Davis bee garden. If you've observed honeybees and wild bees foraging in your garden, you've probably wanted to compare them.

By Susanne von Rosenberg, UC Master Gardener of Napa County If you live in an older home, you likely inherited some amount of old landscaping.

Honeybees are celebrated as effective plant pollinators, but just how effective are they? Newly published UC Davis research in the American Journal of Botany yields some surprising results.