I have about 30 - 40 tree stumps averaging about 8-18 inches in diameter, about 70% cedar (juniper) and 30% live oak ....... a small 25hp Kabota).
Note I don't need to get rid of the stumps, I just need to get them out of the ground or below grade so I can improve pasture and plow.
Questions are: which would be better to use, a stump grinder or bulldozer ? And if a bulldozer, what size would be needed to push over stumps like this or get them uprooted enough that I could get at the roots with a chain saw ? I can leave the stump 4 or 5 feet tall when I cut the trees so I can get leverage with the dozer pushing at the top if that will help.
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bcarwell,
I live just down the road a piece from you , in the hills between Wimberley and Austin. If you're East of I-35, ignore this advice, as the ground is very different.
Ok , if you're dealing with 70% stumps "Cedar" you're in luck. Although the wood is aromatic, and has a reputation for rot resistance, this reputation is based upon confusion with actual cedars - which we do not have - they're an Ashe Juniper, and the roots & trunk will be well-rotted within a few years, your 25-Hp Bota will seems like a bulldozer to those stumps, once they've sat in the ground for coupla years. I find that virtually any Cedar stump, with at least 1.5' of stump, in the ground, cut for 2 or more years, will push over easily with my 24 HP Yanmar.
Live oaks, forget it. I still have a few 20+ year old stumps on my property, and the odd 30+ year old. Still immovable, very little rot and very hard. East of the Hwy, maybe you could move them. Will not rot in our lifetime. Be advised that our local variants of Live Oak are very hard and tough, with a high concentration of minerals. Live Oaks in the ground here for a few years become even harder, and will throw sparks off a good saw blade when cut, and will dull a good blade in a few cuts.
But you'll want to deal with them, as running into one with your FEL will likely hurt something..