We have been using fibrophos in various quantities for the last 6 years and are finding that we are getting better yields mainly through increased bushel weights in both wheats and barleys on the fields that we have applied fibrophos. “The one thing that convinced me most was an area of 6 acres or so in the corner of a large field that originally was very low in pH 4.8 and despite applying generous amounts of lime over a number of years still remained a poor yielding area. “Some three years ago we applied 8cwts fibrophos per acre and since then this problem 6 acres is producing the same yields as the rest of the field. The only explanation I have is the fibrophos.