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| OK, if you say that such-and-such grass needs "3 pounds of N per 1000 square feet" each season...I know how to figure out how much of the total fertilizer material I need.
What I DON'T know is how to determine just how to spread it, and what setting to put my spreader on, to ensure that said XXX pounds of fertilizer is equally distributed, and in the right quantity, over said area. How do you do that? |
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- Posted by dchall_san_antonio 8 San Antonio (My Page) on Mon, Jul 16, 12 at 19:54
| 3 pounds per 1,000 square feet per season generally means one pound per 1,000 in the spring and two apps of 1 pound each in the fall. I like the federal holidays and always suggest Memorial Day, Labor Day, and Thanksgiving. That can be tempered by your distance from the equator but the holidays make a good reminder. Let's say your fertilizer is listed as 10-7-3. That means the fertilizer is 10% N by weight, 7% P, and 3% K. In order to get one pound of N, you'll need to apply 10 pounds of fertilizer (10% of X = 1 pound: Solve for X and you get 10 pounds). Your spreader setting can also be determined. Measure out 100 square feet of area (10 feet x 10 feet square). The amount of fertilizer to go on that area is 1 pound. Measure 1 pound and put it in the spreader. Open the spreader half way and operate it only over the 100 square feet. Make one pass and see how much you used or how much you have left. Adjust the spreader to correct for your initial error. Try it again. You should be pretty close with the second guess. Take note of your spreader setting. Write it on the bag or on your Google Calendar - somewhere where you will remember it. Chemical fertilizers must be watered in immediately before the next morning. |
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