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Scouting
& Monitoring |
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Use yellow Bug-Scan®
sticky traps for (timely) detection of flying insects. During
the heating of the greenhouse hang min. 20 yellow sticky traps per
ha to detect the first flying insects. |
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Also use yellow Bug-Scan®
sticky traps during the cultivation. Count and register during
minimum the first 10 weeks of your cultivation the different species
of flying insects which are captured on the sticky traps. |
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Contact
with beneficials |
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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. |
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Introduce beneficials preferably early
in the morning. |
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If you want to store the beneficials for
a short time, you have to reckon with the storage temperature and
the use by date which are mentioned on the packing. |
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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. |
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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. |
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Biological control of
spider mites |
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Phytoseiulus-System
(predatory mite - Phytoseiulus persimilis) |
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As soon as the first spider mite
hot spots are detected, introduce as soon as possible minimum
20 Phytoseiulus/m².
The exact amount of Phytoseiulus
depends on the severeness of the spider mite damage. Introduce
in and around the spider mite hot spots minimum 40 Phytoseiulus/m². |
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Check the spider mite hot spots
weekly and introduce Amblyseius
californicus and/or Phytoseiulus
if necessary. |
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Remark: Spray the spider mite hot
spots a few times a week, the moist circumstances which are
created will provide a quicker building of the number of predatory
mites in the crop. |
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Feltiella-System
(gall midge - Feltiella acarisuga) |
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In combination with Phytoseiulus
at spider mite hot spots. |
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Introduce locally 1 pot (250 pupae)
during 4-6 weeks. |
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Remark: The gall midges have an
excellent ability to search, but they can become disorientated
by frequent use of a sulphur steamer. |
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Californicus-System
(predatory mite - Amblyseius californicus) |
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Biological control of
thrips |
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Orius-System
(predatory bug - Orius spp.) |
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Introduce Orius
starting from the first bloom, minimum 2 x 0,5 Orius/m²,
with an interval of 1 to 2 weeks (in total 1 Orius/m²). |
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In cases of severe thrips damage:
introduce minimum 5 to 10 Orius/m²
in and around thrips hot spots. |
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Amblyseius-Breeding-System
(A.B.S) (predatory mite - Amblyseius cucumeris in sachets) |
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Introduce minimum 5.000 sachets/ha. |
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Start at the first bloom. |
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Repeat after 6-8 weeks in consultation
with your advisor. |
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Warning:
The products Amblyseius-Breeding-System (ABS) and Amblyseius-Slow-Release-System
(ASR), which contain the predatory mite Amblyseius
cucumeris delivered in breeding sachets, also contain
Mold mites (Tyrophagus putrescentiae) and bran. Under
certain circumstances such as a moist greenhouse climate or
when using large quantities of breeding sachets, Mold mite population
can increase to the point of causing damages in some crops (e.g.
cucumbers). When planning to use these products in crops where
they have never been used before, we recommend to first perform
a small-scale trial or to discuss this with your Biobest advisor
or supplier. |
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Amblyseius-System
(predatory mite - Amblyseius cucumeris in 1L - sprinkler) |
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If no ABS is used, Amblyseius
cucumeris can be introduced as sprinkling material
(25.000 Amblyseius
cucumeris per liter). Apply only when there is sufficient
bloom. |
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Introduce minimum 2 x 500.000 Amblyseius/ha
on the crop, with an interval of 1 to 2 weeks. |
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Warning:
The products Amblyseius-Breeding-System (ABS) and Amblyseius-Slow-Release-System
(ASR), which contain the predatory mite Amblyseius
cucumeris delivered in breeding sachets, also contain
Mold mites (Tyrophagus putrescentiae) and bran. Under
certain circumstances such as a moist greenhouse climate or
when using large quantities of breeding sachets, Mold mite population
can increase to the point of causing damages in some crops (e.g.
cucumbers). When planning to use these products in crops where
they have never been used before, we recommend to first perform
a small-scale trial or to discuss this with your Biobest advisor
or supplier. |
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Biological
control of mealybug |
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Leptomastix-System
(parasitic wasp - Leptomastix dactylopii) |
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The parasitic wasps have to be introduced
in the neighbourhood of citrus mealybug spots. |
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Small infestation: it is advisable
to work with Leptomastix. |
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Quick detection of a hot spot: introduce
during minimum 3 weeks 200 parasitic wasps. |
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Cryptolaemus-System
(ladybird - Cryptolaemus montrouzieri) |
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Biological
control of black vine weevils |
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Heterorhabditis-System
(insect parasitic nematodes - Heterorhabditis megidis) |
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Dose: 1 million nematodes/m². |
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Pay attention: substratum must
be moist during 14 days and the temperature must be higher than
12°C. |
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Crops
