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Old September 18, 2018   #5
PureHarvest's Avatar
Join Date: Mar 2014
Location: Mid-Atlantic right on the line of Zone 7a and 7b
Posts: 1,368

Bower, take the square feet of the area you are going to grow in and divide by 43,560 (sqft in an acre). Most likely will be a tiny number.
Multiply that times the number of pounds per acre your crop is recommended to get.
Then divide that by the percentage of the element you are calculating for.
I do this because all of the professional recommendations for nutrients are in pounds per acre.
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