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DETERMINATION OF AMMONIA AND AMIDE NITROGEN IN CONNECTION WITH THE CHLORATE METHOD FOR NITROGEN IN PLANT TISSUES.
In previous work with the chlorate method (1, 2) for determining nitrogen in plant tissues, materials were used in which the amounts of ammonia and amide nitrogen were either absent or negligible inExpand
A METHOD FOR THE RAPID DETERMINATION OF PHOSPHATE IN FRESH PLANT TISSUES.
Little work has been done on the distribution of phosphate phosphorus in living plants. The colorimetric method worked out by Fiske and Subbarow (2) for phosphate in animal substances should beExpand
FIELD METHOD FOR ESTIMATING NITRATE, PHOSPHATE, AND POTASSIUM IN PLANTS.
Work on tomato and lettuce plants (2) indicates that the percentage of a plant-food element in the mature conducting tissue of a plant is a better index of the adequacy of the soil in supplying thisExpand
Preliminary report on the periods of critical need of potatoes for nitrogen and potassium
  • E. M. Emmert
  • Environmental Science
  • American Potato Journal
  • 1 July 1946
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