How Much Fertilizer?

[fishnowworknever]

Ok I know I can find this info on the internet, but for the life of me I cannot figure out how much I need to put down.

I did have a soil sample sent in last fall and they said I need 2-3lbs of N/1000 sq ft

My front yard is 55 x 33 = about 1800 sq ft

Fert i'm using is 32-0-10 and claims the bag covers 5000 sq ft

how do i figure out how much to apply? What else am I missing here...

[delcecchi]

You need a total of 3 times 1.8 or 5.4 pounds of nitrogen. The fertilizer is 32 percent nitrogen so you need to put on 5.4/.32 or 17 pounds of fertilizer.

Well, those who know, is that correct?

regards,

Mr. Mathematics Person

[MuleShack]

Del has it right.

Determine percentages of the major active ingredients in the package. N-P-K (Nitrogen- Phosphorus- Potassium) are the 3 most abundant ingredients listed on EVERY fertilizer label. They are always in this order, N-P-K. You will see them on the label as three numbers. Such as: 32-0-10.

If you had 100 pounds of that fertilizer in a bag there would be 32 pounds of available nitrogen, 0 pounds of available phosphorus and 10 pounds of available potassium (potash). The remaining 58 pounds are inert or inactive ingredients.

The other thing to look at is what release rate the granulars are rated for. If your putting down a straight release nitrogen at 2 #'s per 1000 you could burn it. Even at the stuff we use 50% and 75% slow release, we are only using 1 - 1.3 #'s per 1000. Thats putting 4 #'s of gross product on the lawn per 1000 sf.

Your best bet is to follow the bag directions. It should list the application rate of X #'s /1000 sf

[fishnowworknever]

Hey thanks, I get it now...