Attached is an article done by a University of Idaho professor on no tillage in the Palouse.
STEEP - Perceptions of No-till in the Palouse
Even though the practice no till was initially developed in the Palouse, and it's many environmental advantages obvious, it still isn't the preferred method on the Palouse. Why? Money. Years of comparison have made it relatively clear that it is more profitable to the farmer's bottom line in this region to plow vs no till. This is especially true the first few years after a farmer converts to no till operations. Some no tillage occurs in the area by concerned farmers, but most of the large scale farmers are highly successful family corporations who have become primarily business focused. Despite lip service otherwise, they tend to place maximizing of profits as their highest priority.