It is good to have feather onions all the year round! As practice shows, the best results can be achieved by growing it on a hydroponic installation . But factory options are not cheap, but who wants to pay a lot of money for a bunch of onions? Let's think about how to hydroponize an onion with our own hands.
What is required?
To grow onions on the feather hydroponics we need a foam plastic or any other waterproof box of impressive size. In this case, a foamed plastic box with a lid of dimensions 80x40x20 (LxWxH) was used to grow onion on hydroponics.
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We also need a few meters of plastic tube and a small compressor. Yes, it's the compressor, because if the roots do not get enough oxygen, then surely rot will begin. Choose is from the mini-compressors of the smallest power, but even it will suffice for several such boxes.
Top cover
In our case, the lid of the box fits tightly, and this is very good, because when forcing onions on hydroponics it is very important that the roots always be in the dark. If the lid of the box, which you picked up, does not fit tightly, then think about how to compact it to the maximum. In the upper foam lid we make a marking so that 5 bulbs in a row are placed in a width, and in length - 10. We cut the hole in the roof of our future hydroponic plant for growing onions in a special way. The hole above should have a larger diameter than the bottom. To do this, using knives, we cut holes not round, but in the form of a truncated cone. This achieves maximum adherence of each of the bulbs in its nest.
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Ventilation system
Now we take two pieces of a plastic tube one and a half meter long, one end of which is sealed tightly. From the sealed end we measure 60 centimeters and often pierce the gypsy needle through and through. The rest of the tubes are removed from under the lid and connected to a mini compressor. Fill the box with water so that the bottom of the bulb is a centimeter above the water. We start the unit, the gas-water mixture must reach the bulbs. If it does, your apparatus for growing onions is hydroponics ready!
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Thus, you can get up to 2-3 kilograms of green onions from each box, and this even for a large family is enough to make all kinds of soups and salads!