To stop anybody seeing it complaining that the farmer/gardener is spoiling the view.Seriously, there are people more bothered about the aesthetics of farming than whether we actually grow any food...
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If you look closely at the netting you'll see that it is not solid. So some of the light that get's thru is not colored green. This netting allows enough uncolored light thru to allow the plants to grow properly. I've use the netting to cut down the amount of direct sunlight some of my garden gets, but I live in Texas where most of the time I have too much sun light.
That was my hunch, it's an 80-90% filter providing 'indirect' sunlight.
Plants actually grow based on many frequencies of light EXCEPT the colour you see on their leaves. The colour you see is what has been reflected by the plant (what is rejected). All the other frequencies are absorbed!
Right, so adding a green filter that only allows green to pass on to the green plants is a bad idea, because the plant uses the non-green frequencies...It is a bad idea unless trying to create specific 'shade' conditions while maintaining bright light.
Right so a netting that appears green is passing everything but green which is exactly what you need to grow plants.
a netting that appears green (from both sides) appears green because only green passes through it; the rest was absorbed. I presume the light on the inside of that tent is very green based on the translucency of the material. Some materials that only reflect certain wavelengths would be the gotcha here - with a dichroic filter reflecting green one would think the other light is passing through, but this time it's the opacity caused by filtering and only allowing green through.
A simple test shows what light it lets through. Get a blank sheet of paper, stand under the netting and see what colour it appears to have. If it is green it would hypothetically limit growth, if it is something else (i guess red or something) then it removes green and should not harm growth. Of course this is all speculation :p
If the netting is green wouldnt it also reflect the green light away? If it were green glass or something then it would only let green light through but what colour light goes through this netting? Green or everything but green?Either way it is likely to cause shade which in itself is beneficial to plants that dislike direct sunlight.
When it's is ona garden it'ssoyou can't seethe netting against the plant