Consulta: creatorFacets:"Zimmer, J."
Registros recuperados: 14
Data/hora: 11/06/2024 12:00:46

Efficacy of Quassia extract on the apple sawfly Hoplocampa testudinea Klug
Provedor de dados: 21
Autores: Kienzle, J.; Zimmer, J.; Maxin, P.; Rank, H.; Bathon, H.; Zebitz, C.P.W.
The efficacy of Quassia extract with a standardized content of Quassin was proved in various field trials in  different regions during three years. The amount of Quassin of 6 g/ha/m tree height will be recommended to  practice. It is not important to have a contact effect on the eggs. The larvae must feed on the product before  they enter the fruit. There is a very good efficacy on primaray infestation. Furthermore, there is even an efficacy  on secondary infestation. Thus, even if due to difficult conditions during application or not optimal termination  of the treatment the efficacy on the primary infestation is not entirely sufficient, the secondary infestation  will be controlled better.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2006
URL: http://orgprints.org/13871/1/ecofruit_12th_42.pdf

Optimizing crop loading of apples and pears - results 2004-2006 (foliar fertilizers, thinning)
Provedor de dados: 21
Autores: Pfeiffer, B.; Eis, B.; Zimmer, J.; Fieger-Metag, N.
Main topics of the research-project FuE 03OE088 of “Bundesprogramm Ökologischer  Landbau” (30.04.2004-31.12.2006) were the testing of foliar fertilizers in organic apples  and pears, optimizing lime sulphur for blossom thinning, looking for alternatives to lime  sulphur for blossom thinning and looking at different combinations of thinning measures.  Only the results of testing foliar fertilizers (carried out by KoGa Ahrweiler and OVB/ÖON  Jork) and combinations of thinning measures (carried out by LVWO Weinsberg) are  described in this article. Over three years only a small increase in yield was evaluated for  the fertilizers Aminosol PS and Wuxal Ascofol (site Ahrweiler, apple variety ‘Elstar’). In  Jork (apple variety ‘Holsteiner Cox’) yield could only...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2008
URL: http://orgprints.org/13741/1/324%2D329.pdf

Field tests with Madex Plus against CpGV-resistant codling moth populations in organic orchards in 2006
Provedor de dados: 21
Autores: Kienzle, J.; Zimmer, J.; Volk, F.; Zebitz, C.P.W.
When resistance to the Mexican isolate of Cydia pomonella Granulovirus (CpGV-M) arose  in several organic orchards in Germany in 2004 and 2005, the future of codling moth  control became a serious concern of organic fruit growing. In 2006, a new virus isolate  from Andermatt Biocontrol AG (Madex Plus) was first tested in two field trials in organic  orchards on codling moth populations resistant against the Mexican isolate of CpGV.  Madex Plus showed a better efficacy on these populations than Madex 3. However, larval  mortality larvae seemed to be somewhat delayed. A very good effect was shown in  population control. The number of larvae in corrugated card board belts was significantly  reduced after treatment with Madex Plus. In addition to these trials,...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2008
URL: http://orgprints.org/13706/1/261%2D264.pdf

Control of the apple sawfly Hoplocampa testudinea Klug in organic fruit growing
Provedor de dados: 21
Autores: Kienzle, J.; Zimmer, J.; Maxin, P.; Rank, H.; Bathon, H.; Zebitz, C.P.W.
The best application technique and application data for the treatments with Quassia extract against  the apple sawfly Hoplocampa testudinea Klug were tested. The spraying solution was distributed  best on the receptacle of the blossom – the place where the sawfly larvae feed before the enter the  blossom – when the treatment was effecttuated at fading blossom with a high amount of water  (about 500 l/ha/mTh). The addition of T/S forte, a wetting agent, could also improve the efficacy of  Quassia treatments in a lower dose. Thus, it is recommended to apply in fading blossom with addition  of T/S forte and high amounts of water to obtain the best effect. If the conditions for applications  are good and the infestation is not too high, the normally...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2006
URL: http://orgprints.org/13759/1/ecofruit_12th_4.pdf

Biological Control of Woolly Apple Aphid (Eriosoma lanigerum HAUSM.) with Aphelinus mali HALD.
Provedor de dados: 21
Autores: Hetebrügge, K.; Fieger-Metag, N.; Kienzle, J.; Bathon, H.; Zebitz, C.P.W.; Zimmer, J.
The release of Aphelinus mali HALD. from artificial rearing for the control of Woolly Apple Aphid (Eriosoma  lanigerum HAUSM.) was tested in field trials. The release of adults proved to be more suitable than the release  of cards with parasitized mummies as practised in the first trial. Setting free adult A. mali at the beginning of  June reduced the aphid population, though its efficiency was not high enough to prevent damage of the trees  totally. The practical applications of A. mali in early spring (after blossom) were not effective because climatic  conditions were not suitable enough. The fertility of A. mali depends on temperature and light intensity.  The application of Micula (rape oil) and T-S forte reduced the growth of the aphid population...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2006
URL: http://orgprints.org/13764/1/ecofruit_12th_6.pdf

Regulierung der Apfelsägewespe im Ökologischen Obstbau und Nebenwirkungen der Strategien auf die Blutlauszehrwespe
Provedor de dados: 21
Autores: Kienzle, J.; Zimmer, J.; Klopp, K.; Maxin, P.; Yamada, K.; Bathon, H.
The effects of Quassia extract on eggs and larvae of the apple sawfly Hoplocampa testudinea were studied in the laboratory. The efficacy of this extract was mainly due to an oral toxicity to neonate sawfly larvae. The main active ingredients, Quassin and Neoquassin, were tested sepa-rately as pure substances. While Quassin had a considerable efficacy also on older larvae, Neo-quassin was less efficient in this case. Since Quassin and Neoquassin were found in different Quassia sources in varying relations to each other and had different efficacy, they have to be considered separately in the definition of extract quality by the content of active ingredients. This requires the application of Quassia extracts before larval hatch. It was shown that low...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection "Organics" in general Fruit and berries.
Ano: 2005
URL: http://orgprints.org/4277/1/4003.pdf

Control of the woolly apple aphid (Erisoma lanigerum Hausm.) by releasing earwigs (Forficula auricularia L.) and support oil applications - an interim report of first year results
Provedor de dados: 21
Autores: Toups, I.; Zimmer, J.; Trautmann, M.; Fieger-Metag, N.; Buchleither, S.; Bathon, H.
The woolly apple aphid (Erisoma lanigerum Hausm.) has been recognised for some years as  a serious pest in organic fruit growing where they may cause severe economic damage due  to a lack of control strategies. Based on preliminary results a new project has been started in  2007 testing combinations of releasing earwigs and oil applications in order to develop an onfarm  control strategy. In this paper we present preliminary results of the first year of the  project´s field trials. They showed good efficacies for applying oil preparations by brush. The  efficacy of releasing earwigs depended on the infestation intensity.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2008
URL: http://orgprints.org/13677/1/203%2D207.pdf

Bekämpfung der Blutlaus durch Freilassung von Blutlauszehrwespen aus Massenzucht
Provedor de dados: 21
Autores: Zimmer, J.; Hetebrügge, K.
Ziel des Projektes war die Erarbeitung eines Verfahrens zur Regulierung der Blutlaus (Eriosoma lanigerum), eines wirtschaftlich bedeutenden Schädlings im ökologischen Obstbau, gegen den es momentan keinerlei wirksame Bekämpfungsmöglichkeiten gibt. Hierzu wurde versucht, aus der Erfahrung vorangegangener Versuchsergebnisse ein Verfahren zur Bekämpfung der Blutlaus durch den Einsatz von Blutlauszehrwespen (Aphelinus mali) aus einer Nützlingszucht zu entwickeln und zur Praxisreife zu bringen. Die Zehrwespe ist ein natürlich vorkommender Gegenspieler, dem es aufgrund mangelnder Synchronisation zwischen Schädling und Nützling nicht rechtzeitig gelingt, den Schaden durch die Blutlaus zu verhindern. 2004 konnten mit dem Einsatz von parasitierten Blutlausmumien...
Tipo: Report
Palavras-chave: Fruit and berries Crop health; Quality; Protection.
Ano: 2006
URL: http://orgprints.org/33923/1/33923-03OE542_1-dlr_rlp-zimmer-2006-blutlauszehrwespen.pdf

Control of the apple sawfly Hoplocampa testudinea Klug in organic fruit growing
Provedor de dados: 21
Autores: Kienzle, J.; Zimmer, J.; Maxin, P:; Rank, H.; Bathon, H.; Zebitz, C.P.W.
The best application technique and application data for the treatments with Quassia extract against the apple sawfly Hoplocampa testudinea Klug were tested. The spraying solution was distributed best on the receptacle of the blossom – the place where the sawfly larvae feed before the enter the blossom – when the treatment was effecttuated at fading blossom with a high amount of water (about 500 l/ha/mTh). The addition of T/S forte, a wetting agent, could also improve the efficacy of Quassia treatments in a lower dose. Thus, it is recommended to apply in fading blossom with addi-tion of T/S forte and high amounts of water to obtain the best effect. If the conditions for applica-tions are good and the infestation is not too high, the normally recommended...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2006
URL: http://orgprints.org/8806/1/ecofruit_12th_4.pdf

Erste Freilanduntersuchungen zur Wirkung von Madex plus gegen CpGV-resistente Apfelwicklerpopulationen in Öko-Betrieben
Provedor de dados: 21
Autores: Kienzle, J.; Zebitz, C.P.W.; Zimmer, J.; Volk, F.
In first field tests on codling moth (Cydia pomonella L.) populations proven to be resis-tant against codling moth granulovirus (CpGV) Madex plus, a selectioned CpGV, proved to be rather effective and showed a better efficacy than Madex 3, the standard CpGV-product.    However, it is to consider that high amounts of Madex plus were used (50 ml/ha and m tree height each seven sunny days (a rainy day is considered half a sunny day). Moreover, the risk of development of resistance against this new selection is not clear yet. Thus, even if now a new selection of CpGV is available for the first time, the strategy of codling moth control in organic farming must rely on more components than only CpGV and mating disruption in the future.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection.
Ano: 2007
URL: http://orgprints.org/9893/1/9893_Kienzle_Vortrag.pdf

Biologische Bekämpfung der Blutlaus Eriosoma lanigerum HAUSM. durch den Einsatz der Blutlauszehrwespe Aphelinus mali HALD.
Provedor de dados: 21
Autores: Hetebrügge, K.; Fieger-Metag, N.; Kienzle, J.; Zebitz, C.P.W.; Zimmer, J.
The release of Aphelinus mali HALD. from artificial rearing for the control of Woolly Apple Aphid (Eriosoma lanigerum HAUSM.) was tested in field trials. The release of adults proved to be more suitable than the release of cards with parasitized mummies as practised in the first trial. Setting free adult A. mali at the beginning of June reduced the aphid population, though its efficiency was not high enough to prevent damage of the trees totally. The practical applications of A. mali in early spring (after blossom) were not effective because climatic conditions were not suitable enough. The fertility of A. mali depends on temperature and light intensity.   The application of Micula (rape oil) and T-S forte reduced the growth of the aphid population...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2006
URL: http://orgprints.org/8808/1/ecofruit_12th_6.pdf

Untersuchungen zur Regulierung von Apfelsägewespe und Blutlaus im ökologischen Obstbau
Provedor de dados: 21
Autores: Kienzle, J.; Zimmer, J.; Klopp, K.; Maxin, P.; Yamada, K.; Bathon, H.; Zebitz, C.P.W.; Ternes, P.; Vogt, H.
Ziel des Projekts war es, die bestehenden großen Unsicherheiten bezüglich Qualität und Terminierung, Kombinationsmöglichkeit mit anderen Präparaten sowie Nebenwirkungen auf die Blutlauszehrwespe und andere Nützlinge des traditionell zur Regulierung der Sägewespe eingesetzten Quassiaholzauszuges auszuräumen.  Des weiteren sollten mögliche Managementstrategien für eine Förderung der Blutlauszehrwespe auf ihre Praxistauglichkeit überprüft und gegebenenfalls optimiert werden.  Folgende Erkenntnisse wurden aus dem Projekt gewonnen und sind für die Praxis relevant:  - Quassia wirkt vor allem auf die Larven der Apfelsägewespe. Wichtig ist daher, dass Quassia ausgebracht wird, bevor die ersten Larven schlüpfen. Das Eistadium zum Ausbringtermin ist nicht von...
Tipo: Report
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2003
URL: http://orgprints.org/15735/1/15735%2D02OE084%2Dble%2Djki%2D2003%2Dapfelsaegewespe_blutlaus.pdf

Experiences with entomopathogenic nematodes for the control of overwintering codling moth larvae in Germany
Provedor de dados: 21
Autores: Kienzle, J.; Zimmer, J.; Volk, F.; Zebitz, C.P.W.
Entomopathogenic nematodes were tested for their potential as tool in resistance  management of codling moth Cydia pomonella L. in organic fruit growing. In two field tests,  the adults emerging from stems treated with nematodes were monitored. In one trial, 90 %  of efficacy could be shown. On-farm trials with favourable weather conditions showed an  efficacy about 50-60 % on fruit infestation by codling moth in the year following the  application. On-farm trials with unfavourable weather conditions showed no results. The  favourable weather conditions for the application are discussed with reference to German  conditions.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2008
URL: http://orgprints.org/13712/1/277%2D283.pdf

Wirkung von Quassiaextrakt auf die Apfelsägewespe Hoplocampa testudinea Klug
Provedor de dados: 21
Autores: Kienzle, Jutta; Zimmer, J.; Maxin, P.; Rank, H.; Bathon, H.; Zebitz, C.P.W.
The efficacy of Quassia extract with a standardized content of Quassin was proved in various field trials in different regions during three years. The amount of Quassin of 6 g/ha/m tree height will be recommended to practice. It is not important to have a contact effect on the eggs. The larvae must feed on the product before they enter the fruit. There is a very good efficacy on primaray infestation. Furthermore, there is even an effi-cacy on secondary infestation. Thus, even if due to difficult conditions during application or not optimal ter-mination of the treatment the efficacy on the primary infestation is not entirely sufficient, the secondary in-festation will be controlled better.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2006
URL: http://orgprints.org/9028/1/ecofruit_12th_42.pdf