Fastest Way To Rot A Tree Trunk. Also, waiting for warmer weather conditions is probably a good idea as the higher humidity and heat can be helpful. Attach the spade bit and the extender to your drill.
Clean all of the debris out of the hole. Consider this simple solution for removing tree stumps:
20 Easy Ways To Remove A Tree Stump The Homesteading
Continue pouring water until all the potassium nitrate has dissolved. Cow manure can do the trick.