Latest / Hydroponics Daily / 5 Non-Essential Elements with potential use in Hydroponics
Transcript
- 0:00Hi, welcome back to Hydroponics Daily. Today we're going to talk about five
- 0:03non-essential elements that you still may... Hi, welcome back to Hydroponics Daily.
- 0:10Today we're talking about non-essential elements.
- 0:13These are elements that are not required for growth but could improve the growth
- 0:18of your plants. The first one is silicon.
- 0:20Silicon is added to feeds to improve cell wall strength.
- 0:25It's a bit like calcium, it improves the rigidity of a cell wall.
- 0:30Because silicon is in glass, it's in silica, and it forms insoluble silicon
- 0:35once it gets to the cells, and that's what gives its rigidity.
- 0:38And obviously, if you increase cell wall strength, you increase resistance to
- 0:42pests and diseases, and abiotic stresses, environmental stresses,
- 0:47things like ozone, or high light levels, or very dry air.
- 0:51Silicon's really good at resisting those particular stresses.
- 0:54It can also form something called phytoliths, which sounds really scientific,
- 0:58but just means phyto means plant and lith means
- 1:01rock so little tiny beads of rock in
- 1:04the plant that make it unpalatable to
- 1:07anything that's going to try and eat it hopefully not
- 1:10humans though so silicon is the only
- 1:13one of these five elements is actually added routinely
- 1:17to feeds well that i would recommend to be added routinely to feeds some people
- 1:22add others so silicon for cell wall strength selenium is not required for plant
- 1:28growth however it is required for animal health so in pasture grasslands it's often added.
- 1:35Often linked to an amino acid, as I talked about in the previous episode,
- 1:39as a bioavailable source of selenium for cattle in particular, also sheep.
- 1:44They can get developmental brain
- 1:46disorders if they don't have enough selenium, and humans can as well.
- 1:50However, selenium is a toxic element if it's in high dose rates,
- 1:53so I would never advise adding it in a hydroponic situation,
- 1:56because you could be in for a world of pain.
- 1:58And the same for cobalt. there are some
- 2:01reports that cobalt is useful for nitrogen metabolisms
- 2:05urease enzymes however cobalt
- 2:09is a really nasty element and is.
- 2:12Carcinogenic in both its pure
- 2:15form cobalt sulfate and even when it's diluted
- 2:18to the ratios that some people
- 2:21say should be put on crops there's already enough cobalt
- 2:24in the soil the more than enough for what you need
- 2:27or in your growing media in your water don't add
- 2:30cobalt and it's it's
- 2:33just not required in any high concentrations
- 2:37same for vanadium and titanium these are
- 2:41there are reports that if you add them to plants
- 2:43you would get an increase in yield or growth however normally
- 2:47that's because they're substituting for iron and these studies were
- 2:50done in very low nutrient levels or very high soil pHs
- 2:54you're far better adding iron than you are titanium or
- 2:57vanadium because they are a poor substitute in all the
- 3:00enzymes that iron is required for by the
- 3:03plant so don't think you need to be sort of
- 3:05like you know dissolving up robocop to get.
- 3:08You titanium you just just add some iron
- 3:11ions are wonderful underappreciated nutrient in hydroponics and
- 3:15so these are five of these the only one i would add the
- 3:18only one i ever recommend is silicon and you can you can
- 3:21buy silicon additives you have to be careful
- 3:25with silicon it can raise the ph of your feed so you
- 3:27do need to look at ph down if you're using a conventional
- 3:31fertilizer if you're using gold leaf or in the uk liquid iron you don't need
- 3:36to worry about that because of the concentrations of silicon you add this product
- 3:40will bring your ph down to the sweet spot instantaneously so it's not it draws
- 3:45it back to the sweet spot every time so don't need to worry about silicon addition.
- 3:51Yeah five non-essential elements if you can think of any others
- 3:54let me know we've discarded carbon oxygen hydrogen because you get them from
- 3:58water and air and then there's heavy metals things like that that are toxic
- 4:02and then there's other elements that have no real impact like fluorine and helium
- 4:09things like that so they're your non-essential elements that's been hydroponics
- 4:12daily for today thank you.