Finman
Queen Bee
- Joined
- Nov 8, 2008
- Messages
- 27,887
- Reaction score
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- Location
- Finland, Helsinki
- Hive Type
- Langstroth
, This document is good to read, Easy to understand what have happened in warm climate when brood is present.
They mention that they have used fumication, but it has not revieled varroa problem.
So prepare that the best method in the world will not save you.
nnnnnnnnnnnnnnnnnn
Conculsion
After over three decades of experience in France, Iran and also Afghanistan and Iraq….etc. in the use of different types of treatments: by inhalation (fumigation), absorption(systemic action) and contact (slow release), evaporation against V.destructor it appears that the efficacy depends on the local conditions and that some care is needed. In Iran the optimal conditions are a high and stable external temperature and the absence of worker brood. The main precaution consists of avoiding re-infestation and robbing, in treating outside periods of nectar flow or queen rearing and in verifying the efficacy of the treatment. The alternative to chemical control is thus more than the simple use of a vegetable or Oxalic-acid in place of synthetic acaricide. It requires an additional effort from the beekeeper to manage the bee colonies, which is more time consuming. Use of Oxalic-acid requires great precaution from the beekeeper.
Although we are in the 21st Century, Varroa destructor will undoubtedly remain for several years one of the principal agents of the weakening of apiarian livestock. Varroa destructor is a serious disease. It is necessary to learn how to live with it. This can be done:
By preserving only strong colonies in the apiaries.
By systematically changing the queens every two years, by developing queens selected for resistance
to the diseases.
The first treatment must be carried out in late march or early April in Iran and Afghanistan by natural or
chemical acaricide.
The second treatment must be carried out in the late September or ealy October in Iran and Afghanistan
using a chemical acaricide. To give over-wintering bees the optimum potential for survival, it must be
sufficiently effective to ensure that at the end of the treatment there will be fewer than 50 mites within
treated hives.
When colonies were treated only with Apiguard® or Apilifevar® and Formic-acid plates and Hive clean®, they showed abnormally high winter losses, with clear evidence of mites. (according to J.P. Faucon and reza Shahrouzi 2003, 2010). It is necessary to use another acaricide chemical in the autumn. It must be
sufficiently effective to ensure that at the end of the treatment there will be fewer than 50 mites per hive.
https://ssl.domicile.fr/apiservices.com/articles/us/varroa_mite_iran_2015.pdf
They mention that they have used fumication, but it has not revieled varroa problem.
So prepare that the best method in the world will not save you.
nnnnnnnnnnnnnnnnnn
Conculsion
After over three decades of experience in France, Iran and also Afghanistan and Iraq….etc. in the use of different types of treatments: by inhalation (fumigation), absorption(systemic action) and contact (slow release), evaporation against V.destructor it appears that the efficacy depends on the local conditions and that some care is needed. In Iran the optimal conditions are a high and stable external temperature and the absence of worker brood. The main precaution consists of avoiding re-infestation and robbing, in treating outside periods of nectar flow or queen rearing and in verifying the efficacy of the treatment. The alternative to chemical control is thus more than the simple use of a vegetable or Oxalic-acid in place of synthetic acaricide. It requires an additional effort from the beekeeper to manage the bee colonies, which is more time consuming. Use of Oxalic-acid requires great precaution from the beekeeper.
Although we are in the 21st Century, Varroa destructor will undoubtedly remain for several years one of the principal agents of the weakening of apiarian livestock. Varroa destructor is a serious disease. It is necessary to learn how to live with it. This can be done:
By preserving only strong colonies in the apiaries.
By systematically changing the queens every two years, by developing queens selected for resistance
to the diseases.
The first treatment must be carried out in late march or early April in Iran and Afghanistan by natural or
chemical acaricide.
The second treatment must be carried out in the late September or ealy October in Iran and Afghanistan
using a chemical acaricide. To give over-wintering bees the optimum potential for survival, it must be
sufficiently effective to ensure that at the end of the treatment there will be fewer than 50 mites within
treated hives.
When colonies were treated only with Apiguard® or Apilifevar® and Formic-acid plates and Hive clean®, they showed abnormally high winter losses, with clear evidence of mites. (according to J.P. Faucon and reza Shahrouzi 2003, 2010). It is necessary to use another acaricide chemical in the autumn. It must be
sufficiently effective to ensure that at the end of the treatment there will be fewer than 50 mites per hive.
https://ssl.domicile.fr/apiservices.com/articles/us/varroa_mite_iran_2015.pdf
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