Regarding the predatory mite Transeius montdorensis against thrip , it is known that prey its population extra increases its effectualness in the chrysanthemum crop . Because this noesis is based on onetime research , Koppert once again checked the effects .
In the context of a study for Perfect Chrysanthemum ( in which Koppert is responsible for for the craw protection ) , three situations were compared with each other in their own side study over several cultivation rounds :
The cogitation have post between March and October 2018 . All stages of Carpoglyphus lactis were used as supplementary feed , supplemented with food for thought for the mites . Ellen Klein : " The redundant alimentation of montdorensis has a unmortgaged overconfident effect on the ascendence of thripid . Moreover , the eating system is hassle - free . "
Clear conclusionsThe inquiry cede clean conclusion .
In short : by feeding montdorensis extra , the universe is developing better . And that can be seen in a importantly low thripid insistency and with much less harvest damage as a result .
A trouble - free process"We are felicitous with these clean-cut results , they confirm what we already think " , says adviser Ellen Klein . " We can now present a absolved recommendation to our customers in the chrysanthemum sector : feed Montdorensis with extra Carpoglyphus lactis and you will have more effect from this predatory mite . In gain , it has already been proven that our supplementary feeding system works immediately . It really is a trouble - barren method acting . "
Tobacco thrips in chrysanthemum : tackle immediately after take flight - inKoppert took many samples during the enquiry to get an impression of the thrip pressure at the various cultivation party . The sample test show that the Californian thrips were present year round in 2018 . As a result of flying - in , the tobacco plant thrips turn up en masse from calendar week 27 . Sometimes large numbers game of the pest insects could be seen on the catch collection plate . However , harvest damage was not that forged and most growers continued using biological control .
Incidentally , never were there so many companies enquire ( via identification in Koppert ’s lab ) to establish which types of thrips exactly were present . Ellen Klein : " Because we now know that the flight - in concerned tobacco thrips , we can advise very specifically . Our advice for 2019 is to tackle the tobacco thrip after the flying - in with two sprays . After that , it is much less massive and has a much shorter presence in the harvest and you may often keep it under control for the rest of the season with predators . So you have more succeeder with biological control . "
For more information : Koppert Biological SystemsVeilingweg 142651 BE Berkel en RodenrijsThe NetherlandsTel : + 31 ( 0)10 - 5140444Fax : +31 ( 0)10 - 5115203www.koppert.com
