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Frank 28-04-2008 05:45 AM

Combining fertilizers
 
Equal parts of 5-1-1 and 0-10-10 (Alaska Fish and Alaska
Morbloom, great stuff) would yield what NPK figure?

Frank 28-04-2008 01:33 PM

Combining fertilizers
 
Frank wrote:
Equal parts of 5-1-1 and 0-10-10 (Alaska Fish and Alaska
Morbloom, great stuff) would yield what NPK figure?


These are weight percentages so you just take the average for 50/50
blend or proportion for any other blend.

David E. Ross 29-04-2008 01:00 AM

Combining fertilizers
 
On 4/28/2008 5:33 AM, Frank wrote:
Frank wrote:
Equal parts of 5-1-1 and 0-10-10 (Alaska Fish and Alaska
Morbloom, great stuff) would yield what NPK figure?


These are weight percentages so you just take the average for 50/50
blend or proportion for any other blend.


Indeed, the numbers represent percentages by weight. If you mix equal
weights of these two, you will get 2.5-5.5-5.5.

That is, if you take 10 lbb of the first, you will have 0.5 lb nitrogen
and 0.1 lb each of phosphorus and potassium. Then, if you take 10 lbb
of the second, you will have 1 lb each of phosphorus and potassium.
Combining them, you will have 20 lbb of fertilizer with 0.5 lb nitrogen
(2.5% of 20 lbb) and 1.1 lbb each of phosphorus and potassium (each 5.5%
of 20 lbb).

--
David E. Ross
Climate: California Mediterranean
Sunset Zone: 21 -- interior Santa Monica Mountains with some ocean
influence (USDA 10a, very close to Sunset Zone 19)
Gardening pages at http://www.rossde.com/garden/

Frank 29-04-2008 07:50 PM

Combining fertilizers
 
On Apr 28, 8:00 pm, "David E. Ross" wrote:
On 4/28/2008 5:33 AM, Frank wrote:

Frank wrote:
Equal parts of 5-1-1 and 0-10-10 (Alaska Fish and Alaska
Morbloom, great stuff) would yield what NPK figure?


These are weight percentages so you just take the average for 50/50
blend or proportion for any other blend.


So I thought.

Indeed, the numbers represent percentages by weight. If you mix equal
weights of these two, you will get 2.5-5.5-5.5.


Close to the standard all-purpose 5-10-10 ratio, ideal 1/2 strength.


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