Single Application Fertilizer Calculator for NJ Homeowners with Established Lawns
For lawn situations other than Established Lawns, we recommend
Soil Testing to determine your soil needs.
Step 1
Estimate the total size (in square feet) of your lawn using tape measure, or number of paces (eg. 13000 square feet). Do not use commas.
Step 2
Insert Nitrogen application rate. For Established Lawns, NJ Law allows no more than 0.9 pounds of Nitrogen per thousand square feet. Use decimal equivalent - Do not use fractions.
Step 3
Insert the first number in the analysis of your bag of fertilizer. (eg. 15 - 0 - 10) This number corresponds to the percentage of nitrogen in the bag. The second number corresponds to the percentage of phosphorous and the third number, potassium.
You may apply pounds of fertilizer per one thousand square feet.
You may apply pounds of fertilizer for your entire lawn.

Designed by Jason L. Gray. Texas A&M. Special Thanks to Marilyn Hughes.

Rutgers NJAES Bringing You Answers to 
Make Your Life Simpler
Calculate your lawn fertilizer needs for an established lawn while complying with the 2011 NJ Fertilizer Law which restricts the amount of nitrogen you can apply to your lawn per application as well as per season.
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