Category Archives: Okategoriserade

Resultat 3.1 Genomsnittlig dagligt kvalster nedfallSom visas i grafen nedan, fig 3, var det dagliga genomsnittliga kvalster nedfallet lägre i testkolonierna efter att drönarutskärningen avslutats – samtliga kupor låg också väldigt lika vilket visar att effekten är konsekvent hög hos alla kuporna. Skillnaden mellan Testkupor och Kontrollkupor var betydande (p=0,065) med 0,2 ± 0,1 respektiveContinue reading “Varroa managment 2023 – del 4”

For English guests: The complete test report in English will be available soon under “egna tester och studier”.I nästa del kommer resultaten redovisas. 2. Material och metoder 2.1 Experimentella fältplatser och kolonier 27 experimentkolonier av lokalt anpassade Apis Mellifera hölls i 7 bigårdar i Kungsbacka och Alingsås på Sveriges västkust. Bina hölls i dubbla yngelkammareContinue reading “Varroa Managment del 3”

Summering Effektiviteten av behandling av Varroa Destructor i kolonier av honungsbiet Apis Mellifera, baserad på Drone Brood Removal (DRB) med en trevägs drönarram tillsammans med Lactic Acid Treatment (LAT), utvärderades. DRB+LAT behandlade kolonier jämfördes med kontrollkolonier behandlade med ”standard” Varroa metod baserad på organiska syror (myrsyra och oxalsyra). Kolonierna delades slumpmässigt upp i antingen testgruppContinue reading “Varroa Management test 2023-del 2”

short summary in English: We weigh our hives monthly to measure how much food they consume and to be sure we have enough food in the spring since that is when most hives starve. Also, as long as the weight decreases we also know that the hives are alive. Average monthly consumtion is around 1,3-1,5Continue reading “Januari och svinkallt – hur mår bina?”

Del 1. Short English summary: We have developed our own Varroa managment system based on drone Brood removal by using a 3 split Drone frame. With this setup we can cull Drones every week and by that we can keep the Mite population below our threshold value which we monitor by checking weekly the miteContinue reading “Varroa Management baserat på drönarutskärning”

Short English summary: 1904 was the start of a disaster that was later called Isle of Wight disease which lasted for almost 20 years and, according to the legend, wiped out the original black bee population in UK and only left the yellow bees that apparently seemed to be resistant to the disease. As BaileyContinue reading “Isle of Wight myten”

Short English summary: It is believed by many that the bees that live through the winter is a different type of bees that are born in late August and perhaps given a different food with more protein. De Grooth concluded (3) already in 1953 that all bees can be longlived and it is the factContinue reading “Högt varroatryck på sommaren ger svaga vinterbin”

Short summary in English: In Hallsberg the bee-keeper Erik Östlund claims to have bees that require no treatment against Varroa. He claim there are about 500 hives in the region that are treatment free and in Norway there are also two populations that don’t require any treatment. The reason is most likely the Varroa sensitiveContinue reading “Konferens ang behandlingsfria bin mot Varroa”

Short summary in English: To finish off the Varroa mite test oxalic acid is applied to all the hives – control hives and testhives. We will count the fallen mites and compare the two groups and for a successfull result no significant differences should be found alternatively the control group have a higher mite count.Continue reading “Varroatestets sista del”

Short summary in English: The Varroa test with drone cutout + Lactic acid treatment instead of traditional treatment with strong acids or chemical acaricides is coming to an end. The result is shown in the graph below and the test group have a significantly lower mitefal after the drone cutout is completed and the lowContinue reading “Varroa test snart i mål”