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Proceedings of the International Plant Propagator's Society

Vol. 30

Title:
EFFECTS OF NITROGEN, PHOSPHORUS, POTASSIUM, AND B-NINE ON THE GROWTH OF BROMPTON STOCKS (MATTHIOLA INCANA)

Authors:
Michael B. Thomas and Alfred Leong

pp: 156-163

Abstract:
The effects of five levels of nitrogen (N), phosphorus (P), and potassium (K) and B-Nine (B9) on Brompton stocks (Matthiola incana) grown in peat/sand 1 1 (V V) were studied Nitrogen strongly promoted growth which was further enhanced by high K Deficiency symptoms occurred at low K whereas there was little demand for P, and it tended to depress the response to N. A foliar spray of B9 strongly reduced height and was temporarily phytotoxic at 5000 and 6000 ppm. The two concentrations offset the response to N particularly at 450 and 600g N/m3 where there was a mild N × B9 negative interaction for foliar dry weight.

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