Hi everybody, I am quite new working with Cropwat. Could someone please give me a clue on what this "y" in this formula referring to? Critical d... Published on January 24, 2015 22:24 by hedyeh jahramiHi everybody, I am quite new working with Cropwat. Could someone please give me a clue on what this "y" in this formula referring to? Critical depletion y= (fc-wp)*(1-y%/100) Thanks!