Meewisse Roses is one of the first users of Priva Precision Irrigation Management , or PIM , as it is known for shortsighted . Owner Tom Meewisse is enthusiastic about the measure unit : " PIM accurately exhibit primal parameters in the root environment in real time , " he says . " This allows me to equalise the irrigation to the motivation of the craw even more precisely . The plant are growing just that little flake better , and I have to put less movement into keeping the harvest in equilibrium . “Launched in 2023 , Priva Precision Irrigation Management is now being used in around ten horticultural companies . Tom Meewisse was one of the first growers to embrace it . " I ’m always open to innovation , as long as I understand what it ’s about and I am confident it will deliver added note value . That was the case with this twist . Our previous measurement system was working well , although it also had some limitations . With PIM , we were able-bodied to overcome them and optimize our harvest management . "
Old system too limitedBefore he bought the new measurement equipment , the raiser based his irrigation mainly on the radiation inwardness , a small weighing gutter , and the amount of drainpipe water for the entire greenhouse , which contains 4.3 hectares of Red Naomi .
" I was largely draw by the drain piss volume , but with only one drain well across more than four hectares there is a lot of delay in the datum I get from it , " he explains to Priva consultant Kevin de Kok . " We also measure the EC and pH at the drain well . Because of the wait we were actually always responding reactively . It was n’t that we had a lot of problem – experience tells you more or less how to displace them – but there was emphatically elbow room for melioration . In particular , PIM would be able-bodied to serve me set the irrigation begin times more accurately . So it was an easy determination to go for it . "
More accurate , more complete , and more up to dateMeewisse buy a unit that could be described as a next - generation weighing toilet . There are two substrate slabs side by side on the weighing political program . The organisation chip in a actual - meter motion picture of the pee content in the slab and its development , the drain intensity , and the EC and pH of the drain piddle , thereby avoiding the unwanted holdup . The unit is connect to the Priva Connext process figurer , which the grower utilize to control his irrigation .
" The equipment is more accurate than before , and the data are a lot more up to date , " Meewisse state . " So we finally have an accurate pic of the water exit , or the saturation level of the slab , in the evening and at Nox . This set the clip you start up irrigation in the dawn . It work well , even in changeable conditions conditions . We also operate with lower limit and maximal sleep periods . The destruction meter will be adjust when I suppose it needs to be change . It was 3 pm at the last of March ; now it ’s 4 pm . It will be a little later in the summer . "
Strategy adjustedNow that the rose cultivator can intelligibly see what is happening in the slab and how much piddle the plants are taking up , he does not have to rely quite so much on the radiation therapy sum . base on the measurement data , he also took the bold footprint of slightly concentrate the minimal rest clock time . This result in more water per hertz being given more often around high noon on sunny day when transpiration is at its in high spirits .
Less adjustment"The irrigation pattern has visibly changed and meets the literal indigence of the crop well now , " he order . " Incidentally , in consultation with Priva ’s cultivation advisor Peter Kamp , I waited a while before align our irrigation strategy . I really have the belief that the plants are mature just that little bit well , and I have to put less effort into maintaining the ripe balance in the crop . You really do have to make few adjustments . You detect that in particular on days with changeable weather conditions . "
Important indicatorWhen asked how PIM is perceived by other users , Kevin de Kok replies : " Very positively so far . Also by our installing partners , because the unit are speedy and easy to install and make ready for use for almost any substrate - based cultivation system . In a large number of crops , agriculturalist want a better and more direct discernment of the crop ’s functioning , for which transpiration is a fundamental indicant . PIM decidedly help with that . I see pile of growth potential for this measurement organisation , not only in roses and yield vegetables but also in craw such as strawberry and gerbera . "
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