I cant imagine walking 14 acres. Divided sections and hills will make that a two day job easy. Also if the grass is tall it creates much more friction pushing a spreader. Short grass helps out.
I use a z-spray jr on an 11 acre site. Hills, retention ponds, obstacles everywhere. It takes me on average 7-9 hours depending on fert rate and if it needs a blanket spray. Walking it would be horrible.
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