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A Comparative Trial of the Pollen Subs: Part 5– Revisiting de Groot

   Contents Diving into de groot Understanding what De Groot did The problem with normalizing to tryptophan Re-interpreting de groot’s findings Protein conversion — Patty into bees Justus von Liebig’s Law of the Minimum and essential amino acids My diet calculator So how about the tested diets? The homebrew formulation Not yet done … References […]

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A Comparative Trial of the Pollen Subs: Part 4–Why did some Subs Outperform Others

A COMPARATIVE TRIAL OF THE POLLEN SUBS Part 4: Why did some Subs Outperform Others? Beekeeper-Funded Research Randy Oliver ScientificBeekeeping.com   Contents Back to my 2020 california trial Have we been focusing on the wrong suspects? Protein in Animal feed formulations Mixing of protein sources Crude Protein and Amino Acids EAAs as percent of crude […]

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Observations on Pollen Subs: Part 3–Placement of the Pollen

Observations on Pollen Subs: Part 3 Placement of the Pollen Patty First published in ABJ October 2021 Randy Oliver ScientificBeekeeping.com There doesn’t appear to be a benefit from feeding pollen sub when there’s already a substantial natural pollen flow going on. On the other hand, during a dearth, pollen subs may perform better when the […]

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Glyphosate fact checking

This is a very contentious subject, but how much of the media alarm over glyphosate is based upon actual risk assessment? Having run my garden and orchard organically for many years, I was faced with invasive Vinca major and Himalaya blackberries that were taking an  excessive amount of my time to control.  Weed whacking, horticultural vinegar, […]

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Observations on Pollen Subs: Part 2 — Why Didn’t My Test Hives Grow?

Observations on Pollen Subs Part 2 Why Didn’t My Test Hives Grow? First published in ABJ September 2021 Randy Oliver ScientificBeekeeping.com   After the first of July we find it difficult to get nucs to grow, despite continual feeding. Is the lack of response to feeding due to the heat, the day length, the lack […]

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A Comparative Trial of the Pollen Subs 2020: Part 3

A COMPARATIVE TRIAL OF THE POLLEN SUBS 2020 Part 3 Beekeeper-Funded Research First published in ABJ September 2021 Randy Oliver ScientificBeekeeping.com   Some research institutions avoid the testing of name-brand products for obvious reasons, and some trade magazines won’t publish articles that might offend their advertisers. We beekeepers are fortunate that Dadant & Sons and […]

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A Comparative Trial of the Pollen Subs 2020: Part 2

A COMPARATIVE TRIAL OF THE POLLEN SUBS 2020 Part 2 First published in ABJ August 2021 Vincent Riciglianoa and Randy Oliverb aUSDA-ARS, bScientificBeekeeping.com   Last month I described how we set up our comparative trial of several pollen subs. Now it’s time to bring in my collaborator, Dr. Vincent Ricigliano, to show the results of […]

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Refining the Mite Wash: Part 3 – Dislodgement, Precipitation and Separation

Refining the Mite Wash: Part 3 Dislodgement, Precipitation, and Separation Randy Oliver ScientificBeekeeping.com First Published in ABJ in September 2020 In my last article I showed how mites will quickly drop off the bees’ bodies if immersed in 91% alcohol.  But there are still more steps remaining to separate the mites from the sample of […]

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Resources for beginners and those wishing to help pollinators

I Googled the word “beekeeping” today, which came back with 39 million results — far too many for most of us to read! The other issue is that with the advent of the Internet, those with strong opinions are free to upload their thoughts, without anyone first checking them for supportive evidence.  And in beekeeping, there […]

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Reading material

Below are links to some classic beekeeping publications: Farrar 1944 Productive-management-of-honeybee-colonies   USDA 1967 Beekeeping in the United States    Scroll down to Moeller’s “Managing Colonies for High Honey Yields” Beekeeping-in-California_1987 I also recommend (or have had recommended): Storey’s Guide to Keeping Honey Bees, 2nd Edition: Honey Production, Pollination, Health, Malcolm Stanford.  Malcolm has an easy-to-read writing […]

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2019 EcoFarm

Beekeeping is more difficult today than it used to be. Our changing agricultural landscape provides less forage, and growers still apply pesticides to freely (although the pesticide situation for bees today is far better than it used to be in the ’60s and ’70s). The main problem for honey bees worldwide is the recent invasion […]

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Henderson-Tilton calculator

I created a handy spreadsheet in Excel for calculating Henderson-Tilton efficacies.  Here’s a snip of it: If you wish, you can enter your raw data into the blue unprotected grid, and then calculate the means or medians (and standard errors of the means if you wish to display them) there.  Then enter those calculated values into […]

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Being Part of The Solution

Click on the link below to view a ppt presentation. Being Part of the Solution  

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