Is there a reason that you want the 1% P and the 11% K??? if you want to add Fe, then add Fe... If you want low N than apply low N... not sure what your needs are in the desert but we only need N for grass here in the Midwest and the Fe and K are gravy...
Are you asking if Lebanon is better than Ironite or Milorganite as an Fe source??? I don't think people have observed many differences in actual usage becuz I don't believe that there are many differences in actual usage... I could be wrong... but here's the thing... *
Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage,,, I wonder what does...