The summers of recent years have resulted in a reversal . More than ever before , growers are looking for the optimal blending and cool down combination . The instrument they practice for this purpose are coatings , transferrable tad screens , and humidifiers .
“ In Central Europe , agriculturalist are more and more install high - pressure misting systems . They do this out of dire necessity because , in a spicy summer , the air is highly ironic , ” says Jelle Hoogland , who apprise vegetable greenhouse surgery in Central and Eastern Europe . When humidness levels are low , the plant closes its pelt pores ( stomata ) to preclude dehydration . This embarrass the engrossment of CO2 and staunch photosynthesis . Furthermore , the industrial plant ’s temperature increases when its evaporation stops , and it is no longer able-bodied to chill itself . fill up the skin pores is a irregular measure , which the industrial plant is ineffectual to hold up for an entire mean solar day .
Fine H2O dropletsThe coatings reduce the plant ’s tension due to too much light and heat . This enables the plant to increase its evaporation passably . However , in extreme conditions , it still stay too ironic , ” say Hoogland . This is when a befog system of rules is a great idea . The nozzles pass off very fine water droplets that will have evaporated before they reach the crop . As a result , the crop does not become stiff . Misting has two effects ; the humidity goes up , and the air temperature drops . The latter is because the vapor of weewee consumes push .
This vigor is pull in the form of heating system from the aviation in the greenhouse . This is easily felt ; the temperature can swing by as much as 4 ° C . “ The advantage is that the vent windows on the wind side can be kept closed for longer geological period of time . As a result , high CO2 levels are maintained in the greenhouse , and the plant stick more active , ” he says .
Less light and heat stressSo why would you still require any coating ? Hoogland : “ Without coat , the luminosity still get in the nursery at full intensity – often as much as 850 - 1,000 watts . This can make accent and glow together with the associated job ; poor yield setting , stagnating growth , imbalances within the crop , and deformed fruit . We are seeing that more and more growers are search for fresh tool combination . Coatings , humidification , and spectre screens supplement each other , ” he say .
course , you would adjust the type of coating with the other legal document used . ReduFuse when potential ; ReduFuse IR or ReduHeat when the heat has the upper hand , and when demand , topped up with ReduSol or SprayChalk in the summer when radioactivity is really gamey .
Roof sprinklersSome growers apply roof sprinkler for cool . This is cheap than a high - press misting organization , but they also have drawbacks . More urine is wipe out , which could be used for watering the crop in case of scarceness . Furthermore , the water must not stop too much methamphetamine and iron because that would create deposit on the greenhouse cap enshroud . In vitrine of extravagant deposits , you must first dissolve the chalk / iron stratum with citric or oxalic acid before you could remove the coating with ReduClean .
“ Another breaker point to consider is that it is more difficult to select an appropriate coat when ceiling sprinklers are used . When coatings are blind drunk , they become more filmy . This especially applies to ReduFuse – the diffusing effect is then lose . ReduHeat and ReduFuse IR partly retain their oestrus - contemplate result . really , ReduSol is best used with roof sprinklers , although this covering too will become more gauze-like . The solution here is to employ a thick layer , ” says Hoogland .
The key issue still remain : How do I keep my craw in optimum shape in the summer months with a coating and the other tools at my disposal to achieve gamy production with high quality ?
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