The doubtfulness of what the crop does when there is a variety in lighting can not be respond just by agriculturalist without sensors . The photosynthesis sensor is an important sensor for visualizing this . It measure the photosynthesis efficiency of a crop , in real time . With the shift from HPS to LED or hybrid lighting , the sensing element is already an increasingly important putz , but the current gamey energy prices make accurate measuring even more important , especially real - sentence measuring .
" Growers who are presently reconsider their strategy desire to be capable to adjust their lighting quickly , while maintaining quality and yield , " says technological manager and senior researcher Arie Draaijer of detector manufacturing business Sendot . " Anyone who starts measure will see that many savings are possible . save even tenths of a percent on get-up-and-go is already saving serious money at the mo . "
The fact that it is potential to measure photosynthesis efficiency is something that has been know to cultivator for a while . measure photosynthesis efficiency is no longer just for investigator . sensing element have become more and more affordable . " With today ’s vigor prices , a agriculturist will easy pay up off the investment in some of our low-cost sensors this wintertime . " More and more growers were already investing in photosynthesis sensing element , but the energy crisis is undoubtedly go to be a immense extra incentive , Arie expect . " We are currently seeing a live interest . "
CAM plantsHow crops deal with lighting differs from craw to crop . Growers of so - called CAM plant , an abbreviation for Crassulacean Acid Metabolism , were working on photosynthetic efficiency even without high vigour prices . Arie sacrifice the example of genus Phalaenopsis agriculturist , who are among the ' early transcriber ' of measure technology . " They are already very advanced in value and calculating variety in lighting on maturation and yield .
CAM industrial plant , admit orchids and many other ornamental flora , shut their stomata during the Clarence Day to grow without drying out . With unsympathetic stomata they can not engross CO2 . With the CO2 they take over at night , they also grow during the Clarence Shepard Day Jr. . But when the stored CO2 provision is wipe out , it stop . Extra lighting is therefore pointless . " That is why these growers start to give close attention to what the plant life can still absorb in terms of firing . Our sensing element , which measure in real time , help cultivator to sympathize this . "
GameThe office is dissimilar for yield crops such as tomatoes , cucumber , cabbage and strawberries , and currently also for nursery vegetable that are give away to winter light . These craw convince CO2 directly into growth . Yet here too , growers do good from penetration into photosynthesis efficiency , according to Arie . " In precept , every grower is always meddlesome optimising his vim consumption . With today ’s high energy prices , this is even more the case . Growers are reconsidering their lighting strategy , but want to do so without making too many concession in full term of production and timber . "
He points out that the personal effects of changes in inflammation on a craw in , say , tomato or cucumber describe above are ' more nuanced ' . " The secret plan of lighting , photosynthesis efficiency , production and nursery clime is more complicated here . That ’s why it took about thirty years to arrive at the current optimised strategies for lighting with HPS , while another ten years of research with light-emitting diode is already underway so as to arrive at an optimum schedule here too . agriculturist play with temperature in the head , among other things . Due to the change in fitting , this change too and so they are now looking for the optimum again . "
value and responding immediatelyThanks to the possibility of literal - clock time measurement , growers can ( out of essential ) take quick footstep in the current vim crisis . According to Arie , very few growers still have a program for the current energy crisis that states just what less lighting will do to production . " And even in scientific discipline there is still a pile unknown about how crops exactly react . Nobody has taken this into account to this extent . "
He gives an example . " If you incessantly supervise energy price and right away need to anticipate this by turning off the brightness level at very high price tip , it could be that in the current dynamic energy grocery store , the brightness are turned off or slur several time a Clarence Day . However , there is still very little insight into what this exactly intend for yield and caliber . And I do n’t stand for divulge after a few weeks that fewer clustering are being bring out , but see in tangible time the impression of turn the boss on the crop . That core is namely very different when you turn off the lights when there is more brightness from outside , as already happens , than when you reverse off the light when there is no extra light from out of doors . That ’s what you see happening now , out of necessary , and so there is still much to see and learn . "
All cropsSendot ’s photosynthesis sensors can be used in all possible greenhouse crops . Erwin Grafe , Commercial Manager at the detector developer : " The grower places the sensor on the folio . We have various solutions for this . For most leaves there is a standard clipping for this . You place it high up in the crop on a folio that contributes a lot to the output of the craw . With crops that do not grow very high , you choose the proper leaf for this , look on its age .
If that leaf , for illustration with some herbs or leafy crop , is not uncompromising enough , you may come in the sensor on a stick and the clip on the foliage . Only in the multilayer culture of certain young leafy crop and herbs is this still a challenge . Young leaves in special are vulnerable here . It therefore requires a little more attention from the grower , but here too the free energy nest egg that growers can achieve soon pay for themselves . "
A few sensors are often sufficient . " Our advice is often : commence low with data aggregation and descale up as presently as you get a better grip on the data point . We also aid with that . In a glasshouse with one harvest and similar conditions , a few sensors can make a big deviation . Where growers have several crop that react differently to lighting , it may be worth investing in more sensing element . In all cases , sometimes big but sometimes only minor saving add up , specially now , with the current vigour prices . "
For more data : Sendot[email protected]www.sendot.nl
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