ASSIMILATION OF AMMONIUM AND NITRATE NITROGEN FROM SOLUTION CULTURES BY ROOTS OF PANDANUS VEITCHI HORT., AND DISTRIBUTION OF THE VARIOUS NITROGEN FRACTIONS AND SUGARS IN THE STELE AND CORTEX

GROWTH OF ANANAS COMOSUS (L.) MERR. AT DIFFERENT LEVELS OF MINERAL NUTRITION UNDER GREENHOUSE AND FIELD CONDITIONS. I. PLANT AND FRUIT WEIGHTS AND ABSORPTION OF NITRATE AND POTASSIUM AT DIFFERENT GROWTH INTERVALS

“…The factors associated with nitrate absorption, translocation and assimilation were discussed in previous publications (9,12,13,15,16). Recent studies by other investigators (2,5,6,17,19) also summarized, in a recent review of McKEE (4) and also by STREET (18), are in agreement with the views expressed on nitrate assimilation in earlier findings (8).…”

“…The data in figure 5-B, depicting K and NO3 levels in the basal meristematic tissues of the active D leaves (9) …”

Effects of Nitrogen on the Nitrogenous Fractions of Ananas comosus (L.) Merr.

“…The system employed for the nomenelature of the leaves, the technique for the sectioning of the various organs, the preparation of tissuies and chemical methods for their analysis were reported in previous publications (29,30). Results …”

Pineapple Chlorosis in Relation to Iron and Nitrogen

“…In both cases, adequate supplies of iron, as solution sprays of ferrous sulfate, remedy the symptoms of chlorosis (30 (21,24). The re-sults are giv en on the fresh weight basis.…”