# How do i calculate how much Nitrogen i am putting down?

#### Derek's Lawn Care

##### LawnSite Member
Can someone tell me how i can calculate how much nitrogen i am putting down with my fertilizers? Thanks in advance

DLC

#### turf hokie

##### LawnSite Silver Member
I am guessing this wasnt on your study material....

Assumptions:
We only care about the N value
50 lb bag size

That means that 24% of your 50 lb bag is N
or
12 lbs of N in the bag

Depending on how many lbs of N you want to apply will determine how to calibrate your machine and how far your 50 lb bag will go.

if you want 1 lb of N per k your 50 lb bag will cover 12k
if you want 1/2 lb N per k your 50 lb bag will cover 24k

Make sense?

OP
D

#### Derek's Lawn Care

##### LawnSite Member
yes thank you very much i appreciate it!!

#### Turf Dawg

##### LawnSite Gold Member
Now take that 50lb bag and divide that by the 12k it will cover and that will tell you that you should be applying 4.16lbs of product per K so when you callibrate you know how much per K you should be using.
Posted via Mobile Device

OP
D

#### Derek's Lawn Care

##### LawnSite Member
Thanks for the help
Posted via Mobile Device

#### cpllawncare

##### LawnSite Silver Member
It was in mine, LOL

#### DA Quality Lawn & YS

##### LawnSite Fanatic
Nice guys, great simple math.