Moon's Graden

by **George** » Sat, 28 Aug 1999 04:00:00

Hi All,

I have been giving my orchids 1/2 teaspoon Dyna 7-7-7/gal for some time
and all is well and good. I want to give them 200ppm of nitrogen so
according to First Rays fert. calculator I need to use just over 2
teaspoons, thats .365grams or 2.19tea to be exact. Does this sound right??

by E » Sat, 28 Aug 1999 04:00:00

Hi George:
.365 gm is not enough,
Lets see, 200 ppm = 200 mg / liter
since it only 7% nitroger ---->200/0.07 = 2857 mg / liter
3.8 liter per gal------> 2857 X 3.8 = 10857 mg / gal
That's almost 11 grams per gal
Teaspoon is such a stupid measure for solids !!!!!
Regards, Ed.

Quote:

> Hi All,

> I have been giving my orchids 1/2 teaspoon Dyna 7-7-7/gal for some time
> and all is well and good. I want to give them 200ppm of nitrogen so
> according to First Rays fert. calculator I need to use just over 2
> teaspoons, thats .365grams or 2.19tea to be exact. Does this sound right??

by **First Rays Orchid** » Sat, 28 Aug 1999 04:00:00

Ed's calculation is correct, as 11 grams of such a dilute solution will have
a density of about 1g/ml, meaning 11ml/gallon. And as a teaspoon is about 5
ml, 11/5=2.2 teaspoons to get 200ppm nitrogen.

If your plants are doing great at about 50, why do you want to go to 200?

--

Ray Barkalow - First Rays Orchids
Secure On-Line Ordering!
http://www.firstrays.com

| Hi All,
|
| I have been giving my orchids 1/2 teaspoon Dyna 7-7-7/gal for some
time
| and all is well and good. I want to give them 200ppm of nitrogen so
| according to First Rays fert. calculator I need to use just over 2
| teaspoons, thats .365grams or 2.19tea to be exact. Does this sound right??
|
|

by **George** » Sun, 29 Aug 1999 04:00:00

Ed,

My mistake, that was supposed to be .365 ounces and Dyna-Gro is liquid.
Your calculations are consistant with what I got. They both work out to
about 2.2 teaspoons/gallon. That makes doses of 1/4 tea. or 1/2 tea. about
25ppm or 50ppm of nitrogen. Doesn't that seem like to little fert. for a
mature phalaenopsis in the bright sub-tropical summer. How many would
consider putting 4 to 8 times the recommended dose of 7-7-7 on their
orchids?

Thanks,
George(about to wipe out 1/2 of collection) Snellenberger

Adel (Ed) Nazzal <...

Quote:

> Hi George:
> .365 gm is not enough,
> Lets see, 200 ppm = 200 mg / liter
> since it only 7% nitroger ---->200/0.07 = 2857 mg / liter
> 3.8 liter per gal------> 2857 X 3.8 = 10857 mg / gal
> That's almost 11 grams per gal
> Teaspoon is such a stupid measure for solids !!!!!
> Regards, Ed.
> > Hi All,

> > I have been giving my orchids 1/2 teaspoon Dyna 7-7-7/gal for some
time
> > and all is well and good. I want to give them 200ppm of nitrogen so
> > according to First Rays fert. calculator I need to use just over 2
> > teaspoons, thats .365grams or 2.19tea to be exact. Does this sound
right??

Moon's Graden

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