Crops
Poinsettia
General remarks on the biological control in poinsettia
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- Before introducing beneficials, the greenhouse and plants should be free of harmful pesticide residues.
- Before the beginning of your cultivation discuss with your advisor a plan of approach for the whole season.
Scouting & Monitoring
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- Use yellow Bug-Scan® sticky traps for (timely) detection of flying insects. Hang during the heating of the greenhouse min. 20 yellow sticky traps per ha to detect the first flying insects.
- Also use yellow Bug-Scan® sticky traps during the cultivation. Count and register during minimum the first 10 weeks of your cultivation the different kinds of flying insects which are captured on the sticky traps.
Contact with benficials and bumblebees
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- Follow up carefully the user’s instructions; always pay attention to the icons on the packing. If necessary consult the Icon Guide.
- Introduce beneficials and bumblebees preferably early in the morning.
- If you want to store the beneficials for a short time, you have to reckon with the mentioned storage temperature and the use by date which are mentioned on the packing.
Chemical corrections
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- If a chemical correction has been inevitable, use as much as possible selective chemical crop protection products. Try to apply chemical corrections on local spots.
- In case of doubt about the side effects of pesticides, contact your advisor or consult the Side Effects Manual which is available on www.biobest.be.
Control of: Greenhouse whitefly
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The greenhouse whitefly (Trialeurodes vaporariorum) is a typical greenhouse pest that affects many crops.
- Available as sprinkling material or on cards.
- Introduce 6 Encarsia/m²/week
- In case of parasitization: increase up to 9 Encarsia/m²/week.
- Introduce during minimum 4 weeks min. 3/m² until a sufficient number of whiteflies are parasitized (80-90%).
- When Bemisia tabaci (tobacco whitefly) has been detected, introduce during 5 weeks 3 Eretmocerus mundus/m².
Control of: Thrips
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Adult thrips are small, elongated insects with typical fringed wings. They measure about 1 mm, and have a greyish or yellow to brown colour. The two most common harmful species are the onion thrips (Thrips tabaci) and the western flower thrips (Frankliniella occidentalis).
Control of: Sciarid fly
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Sciarid flies are small, black insects (3-5 mm) with slender antennae and long legs. Especially the larvae cause a lot of damage.
- For the production of cutting material, it is advised to treat the mother plants not only with Steinernema-System, but also with Hypoaspis.
- Dose: minimum 250 Hypoaspis/m²
- For the production of cutting material, it is advised to treat the mother plants not only with Steinernema-System, but also with Hypoaspis.
- Dose: minimum 250 Hypoaspis/m².
Crops
Contact Biobest
Belgium
Biobest Belgium N.V.
Ilse Velden 18
2260 Westerlo
BE - Belgium