Answer: Even though you were careful with your ferilizer spreader, it doesn't sound as though it's doing a very good job. One way to ensure this doesn't happen again is to use half of the fertilizer and apply it in a north/south direction and then apply the second half of the fertilizer in an east/west direction. This way you'll get even coverage and you should not have stripes in your lawn. Best wishes with your turfgrass!
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