# Combining fertilizers

• posted on April 28, 2008, 4:45 am
Equal parts of 5-1-1 and 0-10-10 (Alaska Fish and Alaska Morbloom, great stuff) would yield what NPK figure?
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
• posted on April 28, 2008, 12:33 pm
Frank wrote:

These are weight percentages so you just take the average for 50/50 blend or proportion for any other blend.
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
• posted on April 29, 2008, 12:00 am
On 4/28/2008 5:33 AM, Frank wrote:

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
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
• posted on April 29, 2008, 6:50 pm

So I thought.

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