{Tool} Controlling potato beetles with Bt (OK-Net Arable Practice abstract). Creator(s): Dierauer, Hansueli; Weidmann, Gilles and Siegrist, Franziska. Issuing Organisation(s): FiBL - Research Institute of Organic Agriculture. OK-Net Arable Practice Abstract, no. 031. (2017)
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(Controlling potato beetles with Bt)
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(Kartoffelkäfer mit Bt biologisch bekämpfen)
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Summary in the original language of the document
Check the state of infestation
• When the potato plants start to emerge, walk the field every 7 days in a straight line and check plants at regular intervals.
• If clusters of eggs are found on more than every third plant, apply Novodor four days after discovering the first clusters.
Apply the agent
• Dissolve 5 l of Novodor in 500 l of water per hectare of potatoes.
• Novodor can be applied together with copper products.
Optimal conditions:
• The potato beetles are still in an early larval stage (L1 to L2).
• Temperature between 15 °C and 25 °C.
• Avoid direct sunlight: spray late in the evening or when the sky is overcast.
• No rain is due within 8 hours after spraying.
Comments
• After a successful treatment, the larvae will turn black after a few days.
• If the effect is insufficient, the larvae will stay mobile. In this case, the treatment should be repeated within the following 10 days.
Summary translation
Befallszustand kontrollieren
• Vom Zeitpunkt des Auflaufens der Kartoffelpflanzen an das Feld alle 7 Tage in einer geraden Linie traversieren und in regelmässigem Abstand eine Pflanze untersuchen.
• Sind an mehr als jeder dritten Staude Eigelege zu finden, 4 Tage nach dem Finden der ersten Eigelege Novodor anwenden.
Wirkstoff ausbringen
• Pro Hektare Kartoffeln 5 l Novodor in 500 l Wasser auflösen.
• Novodor kann mit Kupferpräparaten zusammen ausgebracht werden.
Optimale Bedingungen:
• Die Kartoffelkäfer befinden sich in einem frühen Larvenstadium (L1 bis L2).
• Temperatur zwischen 15 °C und 25 °C.
• Kein direktes Sonnenlicht, deshalb Spritzung spätabends oder bei bedecktem Himmel ausführen.
• Kein Regen während 8 Stunden nach der Spritzung.
Bemerkungen
• Nach erfolgreicher Behandlung färben sich die Larven nach einigen Tagen schwarz.
• Bei ungenügender Wirkung bleiben die Larven mobil. In diesem Fall sollte die Behandlung innerhalb der nächsten 10 Tage wiederholt werden.
| EPrint Type: | Practice tool |
|---|---|
| What problem does the tool address?: | Potato beetles can develop rapidly, especially in warm summers on late-maturing crops, causing extensive damage to the potato plants. |
| What solution does the tool offer?: | In the case of a large infestation, direct control measures e.g. the use of biological plant protection products like Novodor are justified. Novodor contains a bacterium; Bacillus thuringuensis tenebrionis (Bt), whose toxins (protein crystals) destroy the intestinal tract of potato beetle larvae. |
| Country: | Switzerland |
| Type of Practice Tool: | Practice abstracts |
| Theme: | Pest and disease control |
| Keywords: | arable farming, crop species, pest control |
| Keywords: | arable farming, crop species, pest control, plant disease contol, potatoes, root crops |
| Agrovoc keywords: | Language Value URI English arable farming http://aims.fao.org/aos/agrovoc/c_36528 English crops http://aims.fao.org/aos/agrovoc/c_1972 English pest control http://aims.fao.org/aos/agrovoc/c_5726 English plant disease control http://aims.fao.org/aos/agrovoc/c_5960 English root crops http://aims.fao.org/aos/agrovoc/c_6641 |
| Subjects: | Crop husbandry > Crop health, quality, protection Crop husbandry > Production systems > Root crops |
| Research affiliation: | European Union > Horizon 2020 > OK-Net Arable > OK-Net-Arable Tools Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Knowledge exchange > Advice European Union > Horizon 2020 > OK-Net Arable European Union > Organic Farm Knowledge |
| Horizon Europe or H2020 Grant Agreement Number: | 652654 |
| Related Links: | https://organic-farmknowledge.org/tool/31592 |
| Project ID: | ofk |
| Deposited By: | Forschungsinstitut für biologischen Landbau, FiBL |
| ID Code: | 31592 |
| Deposited On: | 24 May 2017 07:50 |
| Last Modified: | 02 May 2024 10:31 |
| Document Language: | English, German/Deutsch |
| Status: | Published |
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