|
|
|
|
|
| Kühne, Stefan; Reelfs, Torben; Ellmer, Frank; Moll, Eckard; Kleinhenz, Benno; Gemmer, Christine. |
| The Colorado potato beetle (Leptinotasara decemlineata Say) is one of the most important pests on potatoes (Solanum tuberosum). In the present study, we compared the efficacy of three biological insecticides – Neem (NeemAzal-T/S), pyrethrum/rapeseed oil (Spruzit Neu) and Bacillus thuringiensis var. tenebrionis (Novodor FC) – against this pest in field trials conducted from 2005 to 2007. The combined and temporarily shifted application of neem and B.t.t. reduced significantly the number of beetle larvae and the percentage of defoliation due to larval feeding, and increased the potato yield considerably. The SIMLEP3 forecasting model is useful for determining the optimal timing of the treatment. Pyrethrum/rapeseed oil did not lead to a significant reduction... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2008 |
URL: http://orgprints.org/11806/1/kuehne_11806_ed.doc |
| |
|
|
| Kühne, Stefan; Reelfs, Torben; Moll, Eckard; Kleinhenz, Benno. |
| The Colorado Potato Beetle is one of the most important pests of potatoes. The effect of various plant protection products based on neem (NeemAzal-T/S), pyrethrum/rape oil (Spruzit Neu) and Bacillus thuringiensis - B.t.t. (Novodor FC) against this pest has been compared in a field experiment from 2004 until 2006. The combined application of neem and B.t.t.-product have reduced the number of Colorado Potato Beetle larvae as well as the losses of plant material by feed of the beetle larvae significantly. In three years of field experiments the application of pyrethrum/rape oil has shown no significant effect to reduce the number of Colorado Potato Beetles. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2007 |
URL: http://orgprints.org/9458/1/9458_K%C3%BChne_Vortrag.pdf |
| |
|
|
|
