ISHS Acta Horticulturae 407: ISHS Brassica Symposium - IX Crucifer Genetics Workshop
THE INFLUENCE OF NITROGEN FERTILIZATION ON YIELD, QUALITY AND SENESCENCE OF BRUSSELS SPROUTS. |
| Authors: | I. Babik, J. Rumpel, K. Elkner |
| Abstract:
The effect of nitrogen levels of 100, 200, 400 and 600 kg/ha on growth and yield of Brussels sprouts was studied in field experiments in 1992 and 1993. The calculated N-rates were applied either in single preplant fertilization or split into base application followed by topdressing of 100 kg/ha. Two cultivars - early 'Ottoline' F1 (Huizer) and mid-late 'Adonis' F1 (Sluis & Groot) were grown. Nitrogen fertilization increased total, processing and large sprouts yield. Split application was effective only at soil nitrogen level of 200 kg N/ha. Plant height increased whereas the number of senescent leaves decreased with higher N-levels. Increased nitrogen fertilization resulted in darker colour, higher chlorophyl content and undesired elongation of sprouts. Specific gravity, dry matter, total sugars and vitamin C content decreased with N-levels. | |
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