It is ( almost ) sorry in the herb and lettuce cultivation at Urban Agrotech and on the bottom layer in the lettuce cultivation at From Boer , yet the sun still often shines . This is potential because an exact replica of sunlight is hanging inside in the form of a short reparation made by the manufacturer Rofianda .
After installing , the growers notice that their crops are growing faster , with higher quality , ledge life and also more flexibility , because ' everything grows ' under the Lord’s Day . It is therefore not surprising that the fittings are now also being used in greenhouses as assimilation lighting .
That sunshine work well is no secret . Nevertheless , the Dutch lighting manufacturer ’s film director Ronald Gronsveld verbalize of ' row against the stream ' when he talk about marketing his fittings . This is because , according to him , a mickle of aid is currently give to creating light with all kinds of colour . " However , that is dissimilar from making sunlight , " he believes . " We play real natural sunlight and offer a full spectrum from 380 to 780 nanometers in one luminaire . you’re able to then add or subtract to that if you want more or less light , but the sparkle always remains the same . "
Ronald Gronsveld at HortiContact 2019
Intermediate coloursDutch growers Vincent van der Gaag of Urban Agrotech and Leonard Boer of From Boer also endorse this . They both use Rofianda fixtures . In the case of Urban Agrotech in a self - developed culture container with a unique , striking carousel . " When we start our projection , we immediately started test lighting . All potential color spectrums were considered . "
After a while , Vincent also protrude working with spectrum meters and evaluate . " It was then that he note that the difference were really in the details and that the intermediate colours in finicky made a big difference . By opt an exact written matter of the sunlight spectrum , we were capable to catch all of them optimally . This is now reflect in the shape and weight of our herbaceous plant and boodle varieties . "
Urban Agrotech cultivates with sunshine in a finish container
Lettuce grower Leonard Boer has also done a lot of testing with lighting . The reason for this was a move to a new greenhouse in Dinteloord . There the growers grow their various types of gelt on two layers under 7 covers in a peculiar greenhouse of 4000 hearty meters . The bottom level is almost daylight - free , so the growers seek out sunlight here . " These days , anyone can make anything with lighting , but that does not make it sunlight , as we let out when we tested a spectrum meter in our test container . The Southern Cross lies in the relationships between the color . "
Sunlight led in the lettuce crop at From Afrikander
FlexibilityBoth cultivator praise the flexibility that the ' sunlight fixture ' offers them . Vincent : " We create one organization in which growers can cultivate several crops at the same time . Then you have to make compromise in your option of inflammation . Not all species like the same kind of light , but everything grows well under sun . "
Leonard agnise that . " Every grower recognizes that in springiness the harvest always begin to grow well as soon as the sunlight begin to shine . So you would prefer to have that all the prison term , without receive to search for the best formula for each miscellany or craw . On the contrary , you want all assortment and crop to do well . During tests in the container , you examine quality problems arise for some varieties with the select spectra . "
Generic light imageRonald likes to point out that choosing a sun spectrum assures growers of a ' much more generic lighting regimen ' . " This bounce , the dark days mean that growers had to apply supplemental light . At those times , you see that growers with their live spectrum have departure in the harvest , because the spectrum create is not identical to the sun . By using our fixtures for both development and assimilation , the ignitor spectrum above the harvest always remains the same . "
This is also the reasonableness why Rofianda does not see a hereafter in hybrid ignition using its own fixtures . " Combining our fixtures with a ' yellow spectrum ' of HPS fire up , for example , score no sense . That only distorts the light image .
Shelf lifeAfter about six calendar month of mathematical operation Leonard has already point out that the butterhead lettuce has grown an extra folio more easily and , in any sheath , the crop is growing quicker . " I ’m positively shocked by this . What we saw in the tests , we are now seeing in real life . " Vincent also noticed something else . " Our dough stays undecomposed for up to three weeks in the refrigerated plane section . That tells us that the quality is good . "
And what about energy uptake ? Not insignificant nowadays , Ronald notes . " There is a lot of stress on it at the moment . Certainly with near understanding , although I sometimes wonder if too little attention is being paid to ware quality . What does sunshine do , more naturally than anything else , to constituent , for example ? There should be more research done into this . I therefore see the longer shelf life of Vincent ’s boodle as something positive . Just as I learn serious thing from a lily bulb grower who work out with our appointment and gets the same semblance in wintertime as in summertime , with the same shelf life . "
Energy useRonald says that cultivator can hold open ' roughly 25 % in pure energy ' with his fixtures . " And nine times out of ten , they can also do with few micromoles , precisely because of the full spectrum of sun that we offer . "
Vincent recognizes this . " compare to other fixture we have try , the vitality conversion is very near . More micromoles * are let loose per electrical power input than we have measured with other fixtures . In gain , the radiation therapy heat is low-down . This is authoritative for the warmth load in our container . As a upshot , we do n’t have to cool down down as much . "
Everything in one chipIn the vertical agriculture marketplace , in which Vincent is active with his cultivation container , he picture that sun is becoming quite a ' thing ' . " I see the subject come up importantly more often than a few years ago . "
This is medicine to Ronald ’s ears , although growing awareness also means that there are likely hijackers on the visible horizon . " But " , he is keen to stress , " not all sunlight is adequate . We work with one chip that contains everything , and as far as I know , that makes us unparalleled . " And more and more grower are noticing that . " Even in tomato plant or chrysanthemum , where a lot of lighter is used and there is already a clear photograph of ' what works ' , you see that growers are now reorienting themselves and ( re)discovering sunshine . "
- also micromoles in the 350 - 800 nanometer image , which includes ultraviolet - A and far - red Inner Light . By default , micromoles are valuate in 400 - 700 micromillimetre . Measuring between 350 - 800 nanometers yields a Photon Flux Density .
For more selective information : Rofianda[email protected]www.rofianda.nl
Ronald Gronsveld[email protected]+31 13 8500964
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