Riddle me this.....

[Usz]

The cost of a 20 pound bag of a 16-4-8 fertilizer is $9.75. How much will it cost to apply 6 pounds of potash?

Can someone tell me how to figure this out?

[silverscapes]

about 40 bucks why don't you buy straight potash go to any ag store and get it

[Usz]

Thanks but I need the actual answer I am not a math wizard:hammerhead:

[LawnTamer]

$36.56 plus tax. That is an expensive way to put down 6 lbs of potash.

[Usz]

thanks, how did you come to that answer

[americanlawn]

You are leaving out one thing....the rate per given area.

[Usz]

Figured it out, thanks

20lbs * .08 = 1.6 lbs

6 lbs/1.6= 3.75 bags needs

3.75bags * $9.75 per bag = $36.56

[bug-guy]

16-4-8 really means 16 lbs ,4 lbs, 8 lbs per 100lbs of product
hence a 50 lb bag does 8000 sq ft @ 1 lb of n per 1000 sq ft because there's 8 lbs ,2 lbs, 4 lbs of npk per 50# bag

this use to bother me when i would push a spreader with a 50 # bag and only getting about 16 lbs of actual fert counting minors

[greendoctor]

This is just one of the reasons why I do not do granulars. For me, 6 lbs of K is equal to 13.3 lb. potassium nitrate. A 50 lb pack of potassium nitrate is ~$23, or about $1 per lb of K. My entire fertilizer inventory is not pallets stacked in my garage. It is in 5 gallon plastic pails with covers. I can cover an acre with no more than 80 lb of material.