Reduced Phosphorus and Nitrogen availability during production improved post-production quality in Hibiscus rosa-sinensis. It significantly reduced the number of senescent flower buds compared with the controls (using growth regulators). This may be important, since most cultivated flowering plants have inadequate keeping quality if their growth is regulated by chemicals. C.W. Hansen, K.K. Petersen, A.K. Larsen, Danish Institute of Agricultural Sciences, Aarslev, Denmark. www.agrisci.org ISHS Acta Horticulturae 669: VIII International Symposium on Postharvest Physiology of Ornamental Plants
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