I have a good friend that has 6,000 acres up there between highway 221 and 395, the last few years haven't been too great up there. The driest place in the world that can still grow dryland wheat. 7" of rain annually is the average.
The are farms irrigated from the Columbia river up to a mile south of Sellards road now. I hauled a lot of grain out of that area in the early 80's.
Would they crop the ground every other year in the dry areas ?
We have some wheat here but are on the other end of the scale at 50" rain per year . Really wetter then wheat likes .