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Old 07-30-2018, 02:45 PM
Junior Member
Join Date: Dec 2017
Location: Portugal
Posts: 6
Default Need info on this outdoor growing technique, please


I'm part of a small cooperative starting growing industrial hemp for CBD extraction in Portugal. We're in year zero so it's safe to say we know very little about it right now, but we're learning rapidly. Our first crop is underway, there are problems with soil preparation and weeds.

I came across this video on Facebook of Shatibaba and I would love to find some information on the technique used there:

I have a lot of questions on this. What is that foil being used? How is the soil prepared for it? Won't this sweat and foster fungus? Is it something used in dry climate only?
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Old 07-31-2018, 04:09 PM
CannaFish's Avatar
Senior Member
Join Date: Jan 2018
Posts: 260

Olá iontichy!

Silver Metallic Plastic Mulch

"Reflective mulches repel invading insect populations, reducing numbers on seedlings and small plants. To put a reflective mulch in your garden, remove all weeds and cover beds with silver polyethylene mulch, which is available in rolls from various gardening supply outlets. Bury the edges with soil to hold them down. After the mulch is in place, cut 3- to 4-inch diameter holes and plant several seeds or single transplants in each. You will need to place drippers under the mulch for irrigation. If applied early, mulches can be effective in reducing viruses spread by aphids. When temperatures get high, mulches may be removed to avoid overheating or burning of some plants. An alternative to purchasing silver mulch is to cover pieces of cardboard with aluminum foil or to spray landscape fabric, rolls of construction paper, or clear plastic mulch with reflective silver paint."

"How to Use Siver Mulch
Step 1. Prepare your garden soil by making sure that it has adequate fertility levels and an appropriate soil pH for growing vegetables. You can find out what your soil's nutrient levels and pH are by having a soil test performed through a private lab or with help from your county's cooperative extension office.
Step 2. Till your soil to create garden beds. Either raised beds or beds level with the surrounding soil surface will work.
Step 3. Lay your drip irrigation line along your garden bed (if you use drip irrigation in your garden). If you're going to use silver mulch, you will need to provide your crops with some form of irrigation because rainwater won't be able to penetrate the mulch to reach your crop's roots. Drip irrigation is usually the method of choice, but hand watering with a hose or watering can is OK too, as long as you do it on a regular basis.
Step 4. Place the silver mulch on top of the garden bed silver side up. Make sure that the mulch is fairly taut, not saggy. Once the mulch is laid out, weigh it down by buring the mulch edges in a layer of soil.
Step 5. Put your plants into the plastic mulch. In order to accomplish this step, use a sharp knife or a pair of scissors to cut a small slit (either "X"-shaped or a straight line) in the plastic mulch. The slit should be as small as possible, just big enough to allow you to put a vegetable transplant into it. Once you have made the cut in the mulch, plant your plant as you usually would, burying its entire root ball in the soil beneath the mulch.

If you're using drip irrigation, make sure that you don't cut your drip irrigation line when you cut the mulch, and make sure that you place your plant near the drip line.
Step 6. Removing silver mulch at the end of the growing season. Since silver mulch is not designed to last more than one growing season, the mulch should be removed and disposed of as part of your winter garden clean-up. The silver mulch is not biodegradeable, and will need to be thrown away.

Although some would argue that this makes silver mulch an environmentally-unfriendly product, it's important to consider how much pollution and waste you prevented by growing your own garden produce, even if you used silver mulch in the process."
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Old 08-01-2018, 04:30 PM
Junior Member
Join Date: Dec 2017
Location: Portugal
Posts: 6

Hello CannaFish,

thank you very much for the information! I would still be worried about fungus, as this would create a hot and humid atmosphere, wouldn't you say? Perhaps using a fungicide would be a good idea? Something biological, like Serenade?
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