D. B. Ibach

Commercial fertilizer used on crops and pasture in the United States, 1959 estimates

1964

Crop yield response to fertilizer in the United States

1968

Fertilizer use in the United States

1966

Fertilizer use in the United States by crops and areas, 1964 estimates

1967

A graphic method of interpreting response to fertilizer

1956

The economic position of fertilizer use in the United States

1958

Determining profitable use of fertilizer

Fertilizer and lime used on crops and pasture, 1947

Cropland use and soil fertility practice in war and peace

Substituting fertilizer for land in growing corn

Use of standard exponential yield curves / by D.B. Ibach