Communications Internationales
Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/11
Browse
2 results
Search Results
Item Association of oxalic and lactic acid for varroa control in Algeria August 2010(2010) Adjlane, NoureddineToday, the chemical control of Varroa with pyrethroids is difficult, as they are no longer effective. Thus, it is interesting to use natural products such as organic acids. Oxalic and lactic acid were used for the first time in Algeria on 30 colonies of Apis mellifera intermissa in Langstroth hives: A. 45 g of oxalic acid dehydrate dissolved 1 litre 50 % sucrose syrup B. 30 g of oxalic acid dehydrate dissolved 1 litre 50 % sucrose syrup C. Two applications with 5 ml 15 % lactic acid carried out by pouring the acid between the frames, with a 7 day interval Dead Varroa were counted during the trial period by means of greased bottom inserts covering the hive bottom two weeks after the use of the organic acids. The efficacy of the oxalic lactic acid depends on the presence of brood at the time of the treatment. Following efficacies were measured: Application A.: 82.6 %, application B: 65.5% and application C: 75.23 %. Organic acids must be considered as products for integrated Varroa control in AlgeriaItem Study of the major factors threatening the survival of bee colonies Apis mellifera intermissa in Algeria(2011) Adjlane, NoureddineBees, in addition to producing honey, pollinate fruit trees and other crops to flowers. Any threat to them, whether from , pesticides, diseases or parasites therefore have serious consequences not only for beekeeping, but also for agriculture in general. For several years, many beekeepers have reported deaths at their apiaries of honey bee Apis mellifera intermissa. At present, we lack hard data on the causes of these deaths in Algeria. In order to provide some answers to this problem, we conducted a field study among beekeepers in the Mid-northern Algeria. This study is supplemented by information from cooperative bee of the technical institute of livestock and veterinary services department at the Ministry of Agriculture and the regional laboratories of veterinary medicine. The analysis results showed bee diseases mainly represented by the varroa, bee poisoning by insecticide treatment, and the degradation of the ecosystem (decreasing flora honey) and climate change. All these factors threaten the native bee and negatively affect the production of honey.