It literally said "exporting water". Only way to make it true is to consider evaporation to be a form of exportation, maybe if the wind blows it into another jurisdiction. Sounds to me that they should recapture the water in the curing barn if they can't encourage it to rain again within their watershed.
In the meantime, I'll make a point of not eating crop grown in California, plenty of locally grown around here, except for pistachios and I can get them from outside of California, too. That would do more to reduce water consumption in California than the Asian alfalfa export argument since I'm not in Asia and can't influence the consumption of alfalfa in Asia. But, what about the California economy? Seems it would hurt if people stopped farming.