There seems to be the notion that banning a single crop would be a radical new response to drought and an unprecedented action by the state. But that is the world we live in now. There’s a popular lucrative quasi-legal crop that Californian farmers are forbidden to grow now, at the risk of becoming criminals. They can’t grow pot legally. No one thinks that this means the end of agriculture or this horribly distorts the market for other crops or that we are all Communists living under Mao on collectivized farms because of it. They just can’t grow pot and the world keeps turning.
Perhaps the growers who lose out under an almond moratorium could be compensated by getting a license to grow pot, like the tobacco licensing system. At least pot can be fallowed in dry years.