I recently bought a 3 point sprayer because I was tired of trying to schedule fertilizing before it rained. I had my soil tested as I am trying to correct the soil which seems more like clay the soil. This year the analysis said for me to apply 30-0-5 twice in the fall at 3 lbs per 1000 sq ft. I know how to do that with the spreader but just want to make sure that my liquid fertilizer math is good.
For example, one product is 20-0-0 and I could mix half add in potassium per application. I want to make two passes like I do using dry fertilizer, going east-west with a half mix and then mix another half and go north-south to make sure I get even coverage. The product has 2.1 lbs of Nitrogen per gallon which is about 5.25 lbs per 2.5 gallon jug.
The question I have is how to equate the 2.1 lbs/gallon of Nitrogen in the liquid mix to the equivalent of the same weight of 35-0-5 granular fertilizer recommendation? I don't think the soil analysis wants me to apply 3 lbs of granular Nitrogen per 1000 sq ft because 3 lbs of the 35-0-5 Nitrogen fertilizer should have 35% Nitrogen or 14 lbs of Nitrogen per bag (40 lb bag*35/100). This would come out to about 1 lb of actual Nitrogen per 1,000 sq ft. So I believe that I would need to apply my liquid Nitrogen at 1 lb per 1,000 sq. ft.
Am I on the right track here?