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| Herz, Annette; Köppler, Kirsten; Vogt, Heidrun; Elias, Ellen; Peters, Arne; Katz, Peter. |
| The use of entomopathogenic nematodes (EPN) is a promising approach to control the cherry fruit fly, Rhagoletis cerasi L.. We already demonstrated the high potential of EPN to infect larvae after leaving the cherry for pupation in the soil in laboratory and field experiments. For practice, an application technique is needed, that is both, grower- and EPN friendly. We tested a tractor mounted spray boom for treatment under the canopy area. The achieved rate of EPN in the soil met the expectations. The activity of EPN in soil samples was high after application, but dropped to 60% of the initial activity within one week. Exact forecasting of larval drop from cherries is another major challenge. To obtain basic data, we recorded the phenology of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2006 |
URL: http://orgprints.org/13795/1/ecofruit_12th_12.pdf |
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| Köppler, Kirsten; Storch, Volker; Vogt, Heidrun. |
| In 2005 initial experiments were carried out to control Rhagoletis cerasi with bait sprays. We used GF-120 fruit fly bait which contains Spinosad and NeemAzal®-T/S mixed in a sugar-yeast hydrolysate solution. 30 ml of bait sprays were applied on single cherry trees in field cages, where we released a defined number of cherry fruit flies. One experiment with GF-120 resulted in a reduction of fruit infestation of 96 % compared with the control. In other trials with GF-120 and Neem bait the effect on the cherry fruit fly population was monitored. After 24 hours GF-120 in a 5 % and 20 % solution led to a high reduction of flies (efficacy 85 %), whereas NeemAzal®-T/S in a 5 %, 10 %, and 20 % solution only resulted in efficacies between 34 % and 42 %. A... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2006 |
URL: http://orgprints.org/13794/1/ecofruit_12th_11.pdf |
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| Herz, Annette; Köppler, Kirsten; Vogt, Heidrun. |
| The cherry fruit fly, Rhagoletis cerasi L., is the major pest of sweet cherries in Europe. Currently, no efficient control method is available and there is the risk of increasing population densities of this pest. Entomopathogenic nematodes caused high mortality of last instar maggots, when entering the soil for pupation, under laboratory and field conditions. First field applications of these biocontrol agents against pupating larvae in 2005 should test their efficacy to reduce pest densities. Accompanying field observa-tions were made to evaluate the degree of natural mortality of the cherry fruit fly during the pupation phase in order to decide if the application of nematodes could substan-tially contribute to control this pest. According to the results... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services Crop health; Quality; Protection. |
| Ano: 2007 |
URL: http://orgprints.org/9647/1/9647_Herz_Vortrag.pdf |
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| Vogt, Heidrun; Köppler, Kirsten. |
| 2002 und 2003 wurden erste Versuche zur Bekämpfung der Kirschfruchtfliege Rhagoletis cerasi im Labor, Halbfreiland und Freiland mit verschiedenen Nematodenarten und -stämmen durchgeführt. Im Labor wurde die Wirksamkeit der Nematoden gegen R. cerasi-Larven, -Puppen und -Adulte mit verschiedenen Dosierungen, Temperaturen und Substraten untersucht. Die Versuche fanden in 24er-Kulturplatten, Petrischalen sowie Plastikdosen, d.h. unterschiedlichen Expositionsszenarien, statt. Im Halbfreiland kamen die Nematoden in Plastikobstkisten mit Erde und R. cerasi-Larven zum Einsatz. Die Freilandversuche bestanden aus der Entlassung von R. cerasi-Larven auf mit Nematoden behandelten Flächen auf der Kirschanlage des Instituts. Die Auswertung der Freilandversuche war... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2003 |
URL: http://orgprints.org/4251/1/4251%2D02OE110%2Dble%2Dbba%2D2003%2Dkirschfrfliege.pdf |
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| Köppler, Kirsten; Peters, Arne; Vogt, Heidrun. |
| In 2002 and 2003, within the ‚Bundesprogramm Ökologischer Landbau’, initial experiments to control the European cherry fruit fly Rhagoletis cerasi were carried out under laboratory, semi-field and field conditions with several entomopathogenic nematode species and strains. In the laboratory the efficacy of nematodes against R. cerasi larvae, pupae and adults was examined. To characterize the controlling potential, different nematode dosages, exposure temperatures and substrates were tested in cell wells, petri dishes and plastic boxes. In the semi-field experiments plastic fruit boxes, filled with soil, were used. In the field tests R. cerasi-larvae and nematodes were released in defined areas in a cherry orchard of the institute. For evaluation of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2004 |
URL: http://orgprints.org/14033/1/9_Vogt_48_54.pdf |
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| Köppler, Kirsten; Storch, Volker; Vogt, Heidrun. |
| In 2005 initial experiments were carried out to control Rhagoletis cerasi with bait sprays. We used GF-120 fruit fly bait which contains Spinosad and NeemAzal®-T/S mixed in a sugar-yeast hydrolysate solution. 30 ml of bait sprays were applied on single cherry trees in field cages, where we released a defined number of cherry fruit flies. One experiment with GF-120 resulted in a reduction of fruit infestation of 96 % compared with the control. In other trials with GF-120 and Neem bait the effect on the cherry fruit fly population was monitored. After 24 hours GF-120 in a 5 % and 20 % solution led to a high reduction of flies (efficacy 85 %), whereas NeemAzal®-T/S in a 5 %, 10 %, and 20 % solution only resulted in efficacies between 34 % and 42 %. A... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2006 |
URL: http://orgprints.org/8818/1/ecofruit_12th_11.pdf |
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| Herz, Annette; Köppler, Kirsten; Vogt, Heidrun; Elias, Ellen; Katz, Peter; Peters, Arne. |
| The use of entomopathogenic nematodes (EPN) is a promising approach to control the cherry fruit fly, Rhagoletis cerasi L.. We already demonstrated the high potential of EPN to infect larvae after leaving the cherry for pupation in the soil in laboratory and field experiments. For practice, an appli-cation technique is needed, that is both, grower- and EPN friendly. We tested a tractor mounted spray boom for treatment under the canopy area. The achieved rate of EPN in the soil met the ex-pectations. The activity of EPN in soil samples was high after application, but dropped to 60% of the initial activity within one week. Exact forecasting of larval drop from cherries is another major chal-lenge. To obtain basic data, we recorded the phenology of infestation... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2006 |
URL: http://orgprints.org/8819/1/ecofruit_12th_12.pdf |
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