meaning of fertilizer numbers

Reply

  #1  
Old 04-17-00, 05:24 PM
Visiting Guest
Posts: n/a
Question

I know that the numbers of fertilizer, such as 5-10-5 indicates nitrogen-phosphorus-potassium (is that the right order?) My question is - What is the difference,for example, between 5-10-5 and 10-20-10. The ratios are the same so what is the difference?
 
Sponsored Links
  #2  
Old 04-21-00, 02:29 PM
Visiting Guest
Posts: n/a
Post

The numbers refer to the percentage by volume of N-P-K or nitrogen phosphorous and potassium and both ratios are 1-2-1 as you have surmized and both would acheive similar results. The main difference is, assuming you needed to fertilize a lawn which will need approximately one pound of actual nitrogen per 1000 square feet, you would need to use 20 pounds of 5-10-5 but only 10 pounds of 10-20-10. Since 5% of the bag is nitrogen, only 5% of the 20 pounds would be nitrogen and the 5-10-5 would take twice as much to yeild the same result as the 10-20-10
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
'