Ökológiai Mezőgazdasági Kutatóintézet

Cherry fruit fly research

On-farm testing of insecticide with Beauveria bassiana active substance is continuing in (2013)

Because of the different environmental conditions presented over time, it is required to test the efficacy of a specific active substance over several years to develop a true idea of the value of the management. Therefore, the on-farm study started in 2012 is being continued in 2013 at four different locations.

Similar to last year’s methodology, swarming of the cherry fruit fly (Rhagoletis cerasi) will be observed through use of yellow sticky card traps supplied with a pheromone lure placed within the cherry orchards. At the beginning of swarming (detected by observation of the sticky traps) we start spraying Beauveria bassiana at the recommended weekly intervals. The substance is tested in two different concentrations. Vektafid-A is our control treatment insecticide. According to foreign studies, efficiency of the substance is influenced by both air humidity and solar radiation. For 2013 meteorological stations were set out in the test orchards. Evaluation of the study on each farm and plot will be made by investigation of the crop’s infection rate (percentage of infested cherry fruits).

Farmers/farms participating in 2013:

  • István Jenei (Mátészalka), Jázi Mezőgazdasági Termelő Bt.

  • József Kazinczy (Nyírbogdány), private farm

  • Imre Zabodál (Kistarcsa), private farm

  • László Tóth (Lövőpetri), local authority

On-farm testing of insecticide with Beauveria bassiana active substance (2012)

Our on-farm study to test the efficacy of Beauveria bassiana as an active substance against cherry fruit fly started in 2012 at three different locations in Hungary in cooperation with Biocont Magyarország Kft.

Swarming of the cherry fruit fly is determined by observing yellow sticky card traps supplied with pheromone lure placed out in the cherry orchards. At the beginning of swarming, participating farmers start spraying with two different concentrations of Beauveria bassiana at the recommended weekly intervals. Vektafid-A is used as a control insecticide to check efficacy of the Beauveria bassiana concentrations. Evaluation of the study on each farm and plot will be made by investigation of the extent of the crop’s infection (percentage of infested cherry fruits).

Farmers/farms participating in 2012:

  • István Jenei (Mátészalka), Jázi Mezőgazdasági Termelő Bt.

  • József Kazinczy (Nyírbogdány), private farm

  • Imre Zabodál (Kistarcsa), private farm

Start of cherry on-farm study 2013!

The results of tests on the Beauveria bassiana product were promising in 2012.  However, accurate or far-reaching conclusions cannot be drawn from only one year of results. Beauveria bassiana  testing continues in 2013. We are seeking additional applications from organic cherry producers in the Nyírség region to participate in this study!

Results of cherry on-farm study in 2012

In 2012, three certified organic farmers participated in our on-farm study. Insecticide containing Beauveria bassiana as the active substance (permitted in organic farming) was provided to participants by Hungarian distributor Biocont. (…) At all three farms, three different study plots were established in the orchards. (…) Yellow sticky cards traps treated with a pheromone lure were placed on the middle tree of  the middle row in each test plot; farmers checked these traps every 2-3 days and recorded the number of cherry fruit fly caught. From the beginning of the swarming period on, orchards were treated with both study and control insecticide every 6-7 days. Cherry harvests were individually scheduled by the farms. Before harvest, we drew random samples (1 kg) from all three plots of cherries with same ripening time. When counted, the number of pieces of the 1 kg samples containing one or two larvae was recorded along with the total of uninfested fruit pieces. To make this a blind test, data of sprayings and sticky cards were matched with infection data of the samples after counting.