Wow - that's often - I guess not a bad thing if you aren't taking very much off the blade (doesn't sound like it).w0lfe said:
I've been using 1.25oz/1k to 1.75oz/1k every ~4 weeks or so. Sometimes a little sooner (if rain is expected for multiple days) or sometimes longer if the grass is looking good.
Obviously been tapering down to 1oz to 1.25oz /1k during the summer. Just enough to keep a little iron and N in the lawn.