Výsledky vyhledávání - "Kalle Toomemaa"

Caging the queen with and without a comb section to achieve high efficacy of Varroa destructor control

Autor: Kalle Toomemaa, Tanel Kaart

Publikováno v: Journal of Apicultural Research. :1-9

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::538d444a5627bac88b1786e44900df54
https://doi.org/10.1080/00218839.2022.2036310

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The synergistic effect of weak oxalic acid and thymol aqueous solutions on Varroa mites and honey bees

Autor: Kalle Toomemaa

Publikováno v: Journal of Apicultural Research. 58:37-52

In this study, the effects of a weak oxalic acid (OA) water solution (0.5%) and a mixture of oxalic acid (0.5%) and thymol (0.12%) (OA/TH) on Varroa mites and honey bees were investigated by trickl...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc21190a09c3110914f3c705b254d993
https://doi.org/10.1080/00218839.2018.1486695

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Wintering of honey bee colonies in cylindrical nest cavities versus oblong box-hives in a North European climate

Autor: Ingrid H. Williams, Marika Mänd, Kalle Toomemaa

Publikováno v: Journal of Apicultural Research. 54:285-291

We compared the efficacy of wintering honey bee colonies in wooden cylinders and wooden oblong box hives. Five colonies in “cylinders” and three colonies in “box-hives” were compared over two winters. The cylinders were 450 mm high with an in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e25e474482eab514c1a5672fd5690b82
https://doi.org/10.1080/00218839.2016.1169645

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Determining the amount of water condensed above and below the winter cluster of honey bees in a North—European Climate

Autor: Kalle Toomemaa, Ants-Johannes Martin, Marika Mänd, Ingrid H. Williams

Publikováno v: Journal of Apicultural Research. 52:81-87

SummaryThe amount of water condensed in the hives of overwintering honey bee colonies was investigated. In autumn, condensers of thin sheet metal were placed in hives above and below the frames of the winter nests of the experimental colonies. The co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43f8737ecdb822d6d30bc8e7b488ecf9
https://doi.org/10.3896/ibra.1.52.2.17

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Effet de l'acide oxalique dissout à différentes concentrations dans une solution d'eau distillée ou de sucrose sur le varroa et sur les abeilles

Autor: Ingrid H. Williams, Ants-Johannes Martin, Kalle Toomemaa

Publikováno v: Apidologie
Apidologie, Springer Verlag, 2010, 41 (6), ⟨10.1051/apido/2010029⟩

International audience; The toxicity of various concentrations of oxalic acid dihydrate (OA) in aqueous and sucrose solution to Varroa destructor and to honey bees (Apis mellifera) was assessed using submersion tests of caged bees and by spraying bee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b4753fe9bb6c62faa1fb21ec143dd19
https://hal.archives-ouvertes.fr/hal-00892065

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