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- [2] EFFECTS OF AMMONIUM AND NITRATE NUTRITION ON LEVELS OF ZEATIN AND AMINO NITROGEN IN XYLEM SAP OF APPLE ROOTSTOCKS ZEITSCHRIFT FUR PFLANZENPHYSIOLOGIE, 1978, 89 (04): : 289 - 295
- [4] EFFECTS OF CYTOKININS IN XYLEM SAP FROM APPLE-TREES ON APPLE SHOOT GROWTH JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY, 1973, 48 (02): : 181 - 188
- [8] EFFECTS OF NITROGEN, PHOSPHORUS, AND POTASSIUM ON GROWTH AND YIELD OF TUNG TREES AND COMPOSITION OF FRUITS PROCEEDINGS OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE, 1947, 50 (DEC): : 137 - 141