Check your big game regs to see if it is legal to plant food crops. In Colorado they have to be harvested crops. It's a little gray in Colorado's regs "It's against the law to: use dogs or bait to hunt deer...etc. Bait means to put, expose,deposit,distribute, scatter salt, minerals, grain...as a lure, attraction or enticement for big game." It doesn't specifcly say plant.
Low pH is almost never a problem in the desert southwest. With our arid conditions and soil types our pH's are typically in the high 7's, 7.7-7.9 The Colorado River drainage which irrigates many locations in the Southwest has ph's as high as 8.3 What works back east may fail here.
BeanMan