D. L. Heanes

发表

Determination of total organic‐C in soils by an improved chromic acid digestion and spectrophotometric procedure

D. L. Heanes, 1984 .

Determination of trace elements in plant materials by a dry-ashing procedure. Part II. Copper, manganese and zinc

D. L. Heanes, 1981 .

Extractable Sulphate-Sulphur, Total Sulphur and Trace-Element Determinations in Plant Material by Flow Injection Analysis Part I. Extractable Sulphate-S

D. L. Heanes, 1990 .

Determination of nitrate‐n in plants by an improved extraction procedure adapted for ultraviolet spectrophotometry

D. L. Heanes, 1982 .

Extractable Sulphate-Sulphur, Total Sulphur and Trace-Element Determinations in Plant Material by Flow Injection Analysis Part II. Total Sulphur and Copper, Zinc, Manganese and Iron in Plant Material

D. L. Heanes, 1990 .

Determination of nitrate in soil and water by an adaptation of an Orange I method

D. L. Heanes, 1975 .

Determination of trace elements in plant materials by a dry-ashing procedure. Part I. Cobalt and molybdenum

D. L. Heanes, 1981 .

Nitrogen: Improved strategies for diagnosing and correcting nitrogen deficiency in spring wheat

J. Schultz, D. Reuter, D. L. Heanes, 1987 .