Seawater solids for hydroponics/gardening

[The Cannarchist]

This is a great product

Using this as a foliar feed will get rid of Powdery Mildew!And if you put some in your nute/soil mix it will stay away.

http://www.seaagri.com/products.html

[c-ray]

how many ppm as a foliar spray?

[The Cannarchist]

Around the 600 ppm mark from the seawater tests we did a couple of yrs ago.

But they give a rate of 10ml/gal of solids every week as a foliar feed.

[Irie1]

How does this prevent powdery? We have a huge problem with it out here. I can foliar, and then put a small amount of this in my reservoir? Nice thread btw. :smoke3:

[Green Supreme]

They don't like the salt in the water. Peace GS

[The Cannarchist]

Irie1,

The salt content sucks the moisture out of the mildew cells causing them to collapse.

We just nipped down to the beach and got a liter of seawater ,diluted it to 600 ppm ,added a surficant and sprayed the plants down.

A foliar a week will keep down any PM problems and some in with the nutes(100ppm) will ensure good prevention.

[Irie1]

So your telling me that this will not harm my plants? I can go down to the beach, get a gallon of water from the Pacific ocean and dilute it? My friends think I am crazy! They are telling me that this will kill my plants, or at least burn the leaves. Obviously that would be devastating, so sorry if I am asking you to repeat yourself.

I can see the ocean from my deck, so if this is true that would be amazing! You may have just saved Humboldt County if this works! Love and Respect!

[The Cannarchist]

Just dilute it down Irie1,If you start at about 200ppm dilution and move up till you see when your plants have a problem with it you'll hit about 500-600ppm.

Foliar once a week or whenever you see the PM,

The best things in life are free

[c-ray]

seawater is 35,000 ppm tds

[outdoordreams]

How long can we store Ocean Salt Water in containers for?
Does it store well?
Or can we evaporate the water and just add the pure salt to water later?

Great thread by the way! Salt water is much cheaper then the amount of Lemons I was thinking of using!

[The Cannarchist]

Slight problem.........

Fresh seawater is alive with millions of lifeforms.Aeration is a must but it's best used fresh.

For small uses try getting some "organic" sea salt from health food store.Should be a grey speckly powder.Then just add water till PPM readings as above.It's pennies to try out.

[Irie1]

You da man! Thanks for all the info.

[c-ray]

if you use store bought salt use the celtic sea salt that is slightly moist, or desouzas from trader joes, they still contain most of the trace minerals

[Irie1]

Man! This worked so well for me, I am honestly flabbergasted! I just stopped by the closest bay access point, and filled up a water bottle. I brought it home, mixed up the solution with some SM-90, and BAM! I killed that disgusting excuse of an organism! I hope to hell it doesn't come back 2! I topped of the res. with some seawater as well, so well see if it keeps em clean.

:cowboy:

[The Cannarchist]

The best things in life are free Mon...

[c-ray]

from http://www.nutraingredients.com/news/ng.asp?n=75049&m=2FSN316&idP=2&c=vsnlrehybkrvprs

By Stephen Daniells
16/03/2007- Growing tomatoes in diluted seawater significantly increased the levels of antioxidant vitamins C and E, says new research from Italy.

The research, focusing on standard 'salad' tomatoes and varieties genetically engineered for ripening, suggests opportunities for antioxidant-enhanced fruit and extracts produced in parts of the world with critical water shortages.

"The controlled use of alternative water resources, such as diluted seawater, could be a valid tool to face drought in the Mediterranean region," wrote the authors, led by Riccardo Izzo, in the Journal of Agricultural and Food Chemistry.

"Our results show that the antioxidant-related nutritional value of tomatoes is significantly improved when the fruits are picked at the red-ripe stage and when the plants are exposed to moderate salinity stress conditions, such as those determined by the application of diluted seawater (10 per cent)."

Tomatoes are a valuable source of nutrients, including beta-carotene, vitamins C and E, and lycopene, a potent antioxidant that gives the fruit its characteristic red colour.

Recent studies have linked tomatoes and their extracts to reducing the risk of several diseases, such as prostate cancer, and lowering inflammation that may cause hypertension and heart disease.

Researchers from the Universita di Pisa and the Universita degli Studi della Tuscia looked at the effect of diluted seawater and ripening on four cultivars of tomato - Jama and Gimar WT (classed as "salad" tomatoes) and Gimar gf (gf is a "stay green" mutant gene) and Gimar nor (nor is characterized by a reduced synthesis of lycopene and beta-carotene).

Izzo and co-workers report that ripening and growing the tomatoes under saline (salty) conditions induced oxidative stress in the fruit, and resulted in increased production of antioxidants. Moreover, the sensitivity of the cultivars to the saline conditions was genotype-dependent.

"The genotypes cv. Jama and Gimar gf line showed increases in ascorbic acid [vitamin C], lipoic acid, and alpha-tocopherol [vitamin E] during both ripening and salt treatment whereas total ascorbate and tocopherols decreased in the berries from salt-treated plants of Gimar wild type," they wrote.

"The mutant gene gf was found to confer a noticeable level of salt tolerance to the fruit in terms of antioxidant response," they said.

More research is needed, as well as investigation of whether the growing conditions affect carotenoid content of the fruit, particularly lycopene, the antioxidant pigment reported to be behind the major health benefits of the fruit.

Source: Journal of Agricultural and Food Chemistry
Published on-line ahead of print, ASAP article, doi: 10.1021/jf0634451
"The influence of diluted seawater and ripening stage on the content of antioxidants in fruits of different tomato genotypes"
Authors: C. Sgherri, F. Navari-Izzo, A. Pardossi, G.P. Soressi, R. Izzo

[Green Supreme]

Ya but do they taste as good? Peace GS

[The Cannarchist]

Better...

[caddis]

Moreover, the sensitivity of the cultivars to the saline conditions was genotype-dependent.

And are they growing organic? How do the benis' in the rhizosphere like the salt?