Plot on left fertilized with superphosphate supplying sulfur at the rate of 100 pounds to the acre. Plot on the right received monocalcic phosphate supplying phosphorus at the same rate as on the superphosphate plot, but no sulfur. Note the dark color and heavy yield of the superphosphate plot, and the poor yield and very light color on the monocalcic plot. Antelope Clay Adobe soil.
Plot in foreground not fertilized. Plot in background fertilized with flowers of sulfur at the rate of 200 pounds to the acre. Antelope Clay Adobe soil.
Plot on left fertilized with muriate of potash and plot on right with sulfate of potash. The same amount of potash was supplied to the two plots. The muriate of potash contained no sulfur, while the sulfate of potash supplied sulfur at the rate of 100 pounds to the acre. Note the poor yield and light color on the muriate-of-potash plot and the heavy yield and dark color on the sulfate-of-potash plot.
Plot in foreground not fertilized. Plot in background fertilized with flowers of sulfur at the rate of 200 pounds to the acre. Antelope Clay Adobe soil.
