Controlled burns are labor intensive. You have to choose a day when hunidity is not too low, when wind speeds are low, and have a bunch of people standing by the fight the fire if necessary.
So burning half of Texas to prevent catastrophic prairie fires is not very practical.
But there is a cheaper way.
Why not do controlled burns in strips a half mile wide, separated by several miles of terrain that is not burned? Orient the strips at right angles to the prevailing winds?
This would limit the spread of wildfire to a smaller area.
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