Eric from Duvall, Wa writes
Kentucky Blue grass wants (per 1000sq) .5 to .75 lbs. of nitrogen per application and 4 to 8 lbs. per year. but I don't know how to calculate 28% Nitrogen into Pounds. I see where this product suggests 4 to 9oz per 1,000 square feet, I assume that means per application, but how many applications per year.
As with any herbicide, fungicide, or fertilizer, applications with Turfgrass Pro 28-0-0 are made on an "amount of chemical per surface area" basis in order to make sure you get the correct results out of your treatment. Spread 4-9 oz over 1000 sq/ft (and you are correct that would be per application) in whatever water volume yields sufficient coverage for your grass type. Everyone's walking speed, sprayer output, height, turf density, etc all play a factor in how much water a person may use and can vary from applicator to applicator. The average suggested water volume to use per 1000 sq/ft for fertilizers in particular is 2-4 gallons of water to have the solution not only absorb through the foliage of the grass, but also being pushed into the roots and soil to be absorbed that way. You may want to fill your sprayer with water only first to see roughly how much water you personally would use to cover a 1000 sq/ft area, then add your fertilizer to that amount of solution.
Answer last updated on: 02/23/2022