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Read the paper and your questions might be answered. the hives in all apiaries were checked for development in spring and in one apiary the number of checks needed to do this was three.

Oh no not my opinion, it is in the Report. The table 'Average effectiveness of the trickle treatment with oxalic acid (g oxalic acid dihydrate per 1 litre of sugar water (1:1 or 1:2 by weight) 1999/2000' Includes the results of significance tests (p<0.05) Using a multiple t test ( Tukey) after...

The tests results ( Table 1) show that there was no significant difference in using 37g oxalicacid dihydrate or 47g oxalic acid dihydrate and that equally there were no significant difference between 30g and 47g of oxaliacid dihydrate.

Will you read the paper??? They are recommending a weaker solution because it is just as efficient at killing mites and has less potential to damage bees.

Read the paper quoted by Heather at http://www.beedata.com/files/drip-oxalic-bogdanov.PDF and decide for your self, there are a number of research papers citing different strength which were derived empirically (trial). This paper has at least researched the effect of different strengths. The...

Yes weight/ weight but concentrations can also be stated weight volume. In any case the Mixture quoted by Heather ( following the citation is stronger than the one she uses) using weight weight the concentration recommended in the Charriere, Imdorf paper is as I have stated 35g oxalic acid...

Heather, if you actually read the paper you for which you gave the URL above you would find that they tested several concentrations of Oxalic acid. And recommended a solution of 35 gms Oxalic acid dihydrate to 1 litre of sugar syrup (1 water to 1 sugar). This is chosen as being strong enough to...

Well I do not know about that! Years ago I dissected out some trachea for interest. Some were very obviously infested with the characteristic dark blotches etc, but I also want some tracheae which were clear. At least one of those, which from X10 examination on the bees I would have sworn was...

They do not. A lot of their higher magnifications are got by digital zooming. Ruary

Well the link didn't work but I know Dave's site: He discusses several techniques so: 1) are you removing the head and front legs and then the thoracic colloar? or 2) are you removing a slice and macerating it before examining it. The first is the traditional method of detection and need a...

Looking at the instrument, I doubt if there is enough working distance to allow for the dissection for acarine under the microscope! With regard to nosema if the infesation is light, the field of viw is very samll and you could easily miss the spores. Ruary

To be accurate: Ireland is using the Italian licence to allow importation and distribution. This is available under the cascade methodology of the Animal Medicines act, (and I think is how the use of Oxytetracycline is obtained by the UK bee inspectorate for EFB). Apibioxal has not been...

got mine in Ireland today's post Ruary

Well I don't know what all this fuss is about: I over winter on OMF with no insulation on the crown board! Ruary

Third photo, the bright grains near the centre have pointed ends: saw similar in the other pictures as well. These to my mind are Nosema ceranea. However others are clearly built like Nosema apis. Could it be a combined infestation? Ruary

Take a suspect bee and grasping the tip of the abdomen pull it away from the thorax. This should separate exposing the digestive tract. If this is swolen and white Nosema is positive. The usual colour is reddish. A microscope is the best as the above is only a field check and is NOT accurate. Ruary

Different use Sugar for energy (carbohydrates) pollen for development (protein). Ruary

good for pollen (orange brown colour) but I think the quality might be low. Ruary

I agree, better to get the virus load down before the bee go into winter mode. Ruary

can you post a link to the company's web page?