It could be the fact that SOOM woods contains by products that remain in some form in the ash that is toxic to chickens. I will have to look that up and see if there is anything on different trees that are toxic, such as Oleander
"Nerium
Nerium oleander is an evergreen shrub or small tree in the dogbane family Apocynaceae, toxic in all its parts. It is the only species currently classified in the genus Nerium. Wikipedia"
The ash from oleander is not poisonous if it's burned properly and completely. However, the fumes resulting from the burning process are toxic and can cause respiratory problems, especially in an enclosed environment, therefore it is never recommended that it be burned.
There is a large debate going as to whether it is more environmentally friendly to burn excess waste, to compost it or to send it to the landfill. Burning the waste causes ash particles to become airborn, however, those particles are healthy for the environment once the land and become part of the ecosystem. It also causes the production of carbon dioxide (CO2), which is a major concern for the environmental community, because it aids in the alleged global warming. Composting also produces carbon dioxide, but if the pile becomes anaerobic as it does in the landfill, it also produces methane, which is far worse than carbon dioxide. The U.S. Environmental Protection Agency has implemented a large-scale, albeit voluntary, Landfill Methane Outreach Program to help fund the capture of these gases for productive use.
That's part of the reason I'm working on collecting the material to build a rocket stove. It has the highest combustion efficienty known to man and operates at extreme temperatures. Properly designed, the output is pure carbon dioxide (which plants require, so it shouldn't be that bad for the planet if we'd stop chopping down all the forests) and condensation. I want to build one on my back porch for winter heating and possibly cooking. Small twigs are the primary fuels.
If someone is burning oleander's, they need help.. My grand pappy always said you can't fix stupid.. Speaking about oleander.. Any suggestion
for a scrub that closely relates to oleander's qualities.. Minus the "poinious".. We were thinking hop seed? Any other suggestions?
Love the rocket stove idea.. Are you going to be at processing day?