Home | Store | Blog | Forums | FAQs | Lesson Plans | Pictures |
|
|
Thread Tools | Display Modes |
|
#1
|
|||
|
|||
Hello kr3t3n,
I haven't grown potatoes hydroponically yet, but do have plans to grow them using an aeroponic system. My plans include building a insulated box with a removable side. Insulated to help keep the roots cool. A removable side in order to be able to access the root system and be able to harvest the potatoes while the plants are still growing. I wouldn't use the netting inside, otherwise the root system will become attached and intertwined in the netting. You won't be able to harvest the potatoes without killing the whole plant. If you tried to just cut the potatoes off and leave the dead roots attached to the netting, you'll provide food for pathogens and cause disease. I also wouldn't use a fogger for a few reasons. I would use mister/sprinkler heads at the top and let the water/nutrients rain down over the root system. You can use either a high pressure or low pressure system, but the low pressure system would be much simpler and cheaper to build. If you want to use a 55 gallon barrel, I would create a door/opening on one side large enough to access all the roots inside. Make sure it's waterproof when closed. Then insulate the barrel to keep the root zone cool. Make small openings in the top of the barrel to place the mister/sprinkler heads into for easy access and maintenance, and so the water/nutrient will rain down over the entire root system. Then assuming it's a recirculating system raise it up high enough so it's above the reservoir, and create water return line from the bottom of the barrel back to the reservoir. |
#2
|
|||
|
|||
Quote:
How are you planning to grow them? In soil? And why are you against foggers? Last edited by kr3t3n; 03-03-2017 at 04:53 PM. |
#3
|
|||
|
|||
Hello kr3t3n,
As I mentioned in my earlier post I plan to grow them using an aeroponic system. The potatoes won't fall off because of weight. The plants roots are quite strong, as well as get bigger and thicker as the tuber (potato) gets bigger. The bigger the potato gets the bigger the root supporting it will be. It's not like a melon or pumpkin that can get over 10 pounds. Even the large baking potatoes only weigh about one pound. You do need good plant support to keep the whole plant from falling through the opening into the root zone though. Support the main root ball at the base of the stem while allowing the roots to grow through, and support the foliage above as well. Foggers by themselves simply don't supply nearly enough moisture. The fog always falls to the bottom making it very hard to get even coverage throughout the entire root system. The ultrasonic pads tend to clog (even the Teflon ones can), and foggers have been known to aid fungal growth. |
#4
|
|||
|
|||
Quote:
How would you calculate the watering frequency and gaps between? |
#5
|
|||
|
|||
Hello kr3t3n,
Yes, it will be a low pressure aeroponic system. Not only is a low pressure system much easier and cheaper to build, but a low pressure system would also produce larger diameter roots, and thus I would think potatoes as well. Quote:
|
#6
|
|||
|
|||
Quote:
Unfortunately, it is neither the best sketch nor a good photo, apologies if very difficult to understand. I was thinking of making a basin for the mist maker(s) near the top of the container which will overflow and the mist will presumably overflow as well, falling down through the roots. Would you think such a system would work? In the top drawing I've tried to draw a box which has 4 plants In the second drawing I've tried to draw where the mist makers basin would be with their positions (I've forgotten to add some padding from the top) In the bottom one I've tried to make a "close-up" of the mist makers basin. The only reason I'm looking at mist makers as watering method is because sources on the Internet claim that the roots accept nutrients easily (more naturally) when the drop size is near (if not exact) as what the mist makers produce. Quote:
|
#7
|
|||
|
|||
Hello kr3t3n,
First foggers and misters aren't the same thing. Foggers produce fog, not mist. Fog is dry, mist is wet. Have you ever went outside on a foggy morning? Did you get wet? That's because there is very little actual moisture in fog. While I'm not scientist, I can tell you that the water droplet size doesn't determine the size of the mineral element molecule. Plants can't absorb nutrients/mineral salts unless they are in their single raw chemical state. That is unless they are a single molecule. If they bond with another molecule, their not usable to the plant regardless what the water droplet size is. With that said what makes the water droplet size important is aeration. The small water droplet size allows for better aeration and oxygen uptake. Thus the root growth is much smaller and finer. Like millions of small hairs. These tiny hair like roots are much more efficient in absorbing nutrients because their's a lot more surface area to absorb them. This is why I said a low pressure system would be able to grow bigger potatoes. The water droplet size in a low pressure aeroponic system is much bigger than in a high pressure system. Bigger water droplet size means thicker roots. Bigger thicker roots can support bigger potatoes than tiny thin roots will. With the smaller thinner roots you may get more potatoes because there will be more surface area, but the potatoes will be much smaller as well. P.S. Even if you had the fog drop down from the top into the container, it will quickly drop all the way to the bottom. The only way to get even coverage is by creating enough fog to constantly fill the entire container. The fog will fall out of the first opening in the container it can as well. Even if you are able to fill the container with fog for even coverage, there still isn't enough moisture in it and you would have to get more moisture to the plant another way. |
Bookmarks |
Tags |
potatoes, soil-less |
|
|