virtually two year ago , Leon Kouwenhoven , polish specialist at OK Plant in Naaldwijk ( the Netherlands ) face a challenge when deploying his biologic controls . He uses montdorensis against thrips , but noticed that he could n’t parcel out his predatory mites equally . He observed more thrip pressure on the sides than in the center of his nursery deal . To solve this , he adapt his blower to direct more towards the outer edge . The result was downcast thrips pressure at the edges of his binding , but increased press in the middle . " I was essentially move the job around . "
Henk van der Meer , crop protection medical specialist , visits OK Plant regularly . He notice Leon ’s challenge : " An even dispersion of the biota is specially important with orchids because the plants are in vases . If a predatory tinge is in a vase , it ’s unlikely to move to another vase . " Leon asked Henk and account manager Gerard Bok to aid him encounter a result to this trouble .
unexampled distribution systemRecently , Pligt Professionals require Henk and Gerard the same motion as they faced a like challenge . A new dispersion system of rules for biology had to meet several criteria .
The new biology distributor with the old blowers above . These are now redundant and can be dismantled .
With these criteria in creative thinker , Gerard and Henk speak to several manufacturer . Wim van Wijk Techniek ultimately fall up with a suitable system . In this system , the biology is in tubes that attend across the entire width of the covering fire . When the system is trigger , the metro spread out and the biological science falls on the crop through hole in the tubes . " Since the tubes string up directly above the cultivation mesa and no steer is being used , there are virtually no predatory touch falling alfresco . "
As is the caseful with blowers , the system move back and forth ' independently ' . Upon initial use of goods and services , the travel speed and rotation speed must be fructify at once to distribute the trust amount of biology evenly over the cover . After that , nothing more needs to be done . Leon : " It ’s a matter of turning it on and waiting for it to hark back . In the meantime , the tube can be filled for the next cover . "
work together to find solutionsGerard and Henk invited Leon to Pligt Professionals to take a look at the arrangement . Leon was enthusiastic and has been using the system in his greenhouse for over a year . " From that second on , the thrips pressure level has been much lower . It just work well , and we did n’t have to vary anything . " Gerard and Henk are always count for things that can be improved . " But these improvements are bear on with detail . "
Research with other biologyIn cultivation , Leon mainly apply montdorensis , but other biological harvest trade protection can also be distributed through the pipe . Gerard : " Our squad of practical research worker continues to investigate how other insects come forth from the different system . We want the down in the mouth potential fatality rate and also as few wiped out wings or leg as possible . "
To enquire this , a culture trough with petri beauty is mounted under the tubes . Here , the biota is collected and can be analyse . " By testing different types of insects , we endeavor to get the most complete moving picture of the fatality rate . We try out predatory jot and feeder soupcon , but also beetle . This fresh scheme ensures that virtually all tested biota get in alive and entire in the petri dishes , as has been experienced by grower . "
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