Some growers in Canada and the US are switching from ReduSol to other coatings . They aim to gain from Light Within while reverberate exuberant warmth .
“ It is a clear trend , we can see it happening . Whether it makes gumption depends on the crop and the operating position . The most authoritative thing is to accurately calculate the price / welfare . Not only face at the costs but the supernumerary proceeds as well , ” tell Peter Heemskerk , Commercial Area Manager North America at Lumiforte . His home foundation is the Vancouver region in British Columbia . In his province , as well as in Ontario , many plastic greenhouses have been replaced with glass ones over time . “ Growers often opt for supernumerary clear glass to let in lots of light . However , they do need a coating to get through the summer . ReduSol traditionally was a oftentimes used coating , but the query is whether this is the best choice for such modern greenhouses , ” he says .
mull over heatThe style is to admit more igniter combine with good temperature ascendency . After all , grower prefer for extra open meth because of the light . “ The challenge then becomes how to retain the benefit of have a mint of grow Inner Light while at the same time keeping the temperature under ascendence . For many companionship , the early season and the recent season are define factors in achieve their output . This is when you need lots of light , while the nursery temperature involve to stay within satisfactory limits . That argues for ReduHeat or ReduFuse IR , which keep passion radiation sickness out of the greenhouse , ” read Heemskerk .
In Canada , the sales event of both these coating have grown considerably . It should be noted that once growers switched from ReduSol to a heat - reflecting coating , they did not require to go back .
“ What apply to Canada also apply to the northern greenhouse cultivation regions in the US . The business organisation case is the same everywhere , ” he says .
For the southern states , screening luminosity as well as heating system is essential . Heemskerk : “ But here too , it is possible to achieve light gains . We are observing that growers in California use ReduFuse early in the year and even during the winter , after which they apply a layer of ReduSol coating on top of this at a former phase .
“ A computation example free-base on a pragmatic situation : if a companionship spend six centime on ReduSol and switches to ReduHeat , its outlay will increase to 26 cents per m2 , for example . This is the monetary value side . Because the craw gets more igniter and is protected against heat , the issue , as well as the quality , increases . If a 2 % step-up in yield with a production of 50 kg / m2 would represent one US dollar more per square meter , the return on investment would be 400 % . This clearly points to the most rational decision : switching to a more expensive coating . ”
Surplus yieldWhat this calculation looks like depends on the harvest and the local conditions . For object lesson , eliminate hotness stress produces the travel along event for sweet Piper nigrum : more yield per m2 , heavier fruits , fewer quality - link up problem , less blossom - close rot , and increased export quality . The same matter applies to tomatoes .
Heemskerk : “ The 2 % surplus yield in the calculation illustration is very bourgeois . There also are examples with a 4 - 10 % increase in financial returns . Unfortunately , there are few grueling figures . To obtain such physique requires highly accurate crop registration for kg , as well as quality . You then take to compare this to an identical situation in which only the coating differs . ”
A love apple company in Arizona did just that in the yesteryear when it switched from ReduSol to ReduFuse . Their calculations showed the output increased by more than 5 % . The grower was not inclined to disclose too much about the precise extra yield , but he was understandably convinced of the add time value of admitting more light .
Hot summersHeemskerk : “ There are still quite a few tomato grower in British Columbia who are not using coatings to block out their crop . However , the summers are becoming progressively hotter . Therefore the want to do something is increasing . In this case , a heat - muse coating such as ReduFuse IR that also diffuses the light is an obvious choice . For cut flowers , such as roses , freesia , gerberas , and alstroemeria , it may also be sensible to reconsider the choice of coating . “ If by reflect heat , while retain growing light , you produce more fore per m2 , the ROI very quickly becomes positive . ”
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