Now that summer has arrived , thrip and spider mite atmospheric pressure is likely to increase . The climate inside the greenhouse is also changing , and - according to Biobest adviser Koen Merkus - cosmetic cultivator should choose the predatory mite that best suits these shape . For example , Amblyseiusswirskiiis well suited to higher temperatures thanAmblyseiuscucumeris .
Around the worldly concern , growers of cut rosiness , gerberas , poinsettias , leafage pile plants , and bedding plants for hang baskets successfully employ predatory jot to assure thripid and wanderer mites .
" In ornamental crops , the damage threshold is very low , as the plants or flowers have to look unadulterated , " articulate Koen . " The use of the most desirable natural foe helps in this respect . "
Swirskii - arrangement better choice in warm conditionsIf thrips are the major problem , Koen articulate Swirskii - System is a good choice at this time of year .
" This all - rounder is very effective against thrips but also facilitate keep in line whitefly and wanderer mite , " he says . " Amblyseiusswirskiithrives better at high temperature thanAmblyseius cucumeris(Amblyseius - System ) , which cosmetic growers often trust on in wintertime and spring . "
" Swirskii - System can survive for a long time , especially if fed once or twice with Nutrimite ™ . This feed supplement disappears when watered , so the plants and flowers continue to look beautiful . "
Effective against WFTBefore using predatory mites , Koen say it is very important to correctly discover the thrips coinage .
" Against the most common California thrips ( Frankliniellaoccidentalis ) , both predatory pinch are highly effective . In the case ofEchinothripsamericanus , they are less effective – those in doubt should contact their Biobest consultant . "
When to practice phytoseiulus - organisation or californicus - system"Ornamental growers particularly affected by blood-red spider mite generally choose the predatory tinge Phytoseiulus - System - the public ’s most effective biological wanderer speck ascendency , " say Koen . " Phytoseiuluspersimilishas a shorter living cycle than the spider speck , which aid it shrink the pest population .
" Phytoseiulusis at its good in humid consideration . In ironic greenhouse climates , Californicus - System ( Amblyseiuscalifornicus ) palpate more at base and can be used preventatively . Meanwhile , Phytoseiulus - System crop best in high pest press situations . "
unlike spider mites active in poinsettiaKoen says it ’s important to consider which spider speck is present . For model , in Poinsettiasm , two specie of spider mite can be found .
" Phytoseiulus - System successfully battle the most vulgar two - spotted wanderer pinch ( Tetranychusurticae ) , but it has more trouble with the little lewis mite ( Eotetranychuslewisi ) , " he says . " In this case , Californicus - System or Andersoni - System is a well choice . "
Andersoni system for smaller mitesAmblyseiusandersoniis also advocate for assure smaller mites , such as gall and molluscum tinge . " Andersoni - System persist fighting at lower and higher temperature while course mainly on bitterness and rusting mites as well as thripid . "
" As you may see , Biobest has a wide selection of predatory speck products enable growers to choose the natural enemy that unspoiled suit their greenhouse climate and pest pressure . Good reconnoitering and correct designation of the pest flirt a essential use in set out skillful ascendance . "
For more information : Biobest Group NVT : +32 14 25 79 80[email protected]www.biobestgroup.com
