New Zealand Journal of Crop and Horticultural Science abstracts
Effects of nitrogen and potassium nutrition on soil-grown Sandersonia
aurantiaca stem and tuber production
G. E. CLARK
New Zealand Institute for Crop & Food
Research Ltd
Pukekohe Research Centre
Pukekohe, New Zealand
Abstract The effects of four nitrogen (N) application rates
(5, 10, 20, 40 g N/m2) and four potassium (K) soil levels (0.4, 0.8,
1.8, 3.2 me/100 g) on soil-grown Sandersonia aurantiaca (Hook.) stem and
tuber production were evaluated. Leaf concentrations of N and K declined with
plant age but were greater at the higher N and K levels, respectively. Small
increases in some stem production indices (flower number, percentage side
laterals) occurred with increasing N but declined with increasing K (stem
length). Tuber weights declined with increasing levels of N and K with the
largest tubers, 7.9 g produced at 10 g/m2 N and 1.8 me/100 g K. This
study indicates that moderate N and K nutrition rates should be used for
soil-grown sandersonia to optimise both stem production and tuber weights.
Keywords Sandersonia aurantiaca; nitrogen; potassium;
nutrition; soil; stem; tuber; vase life
New Zealand Journal of Crop and Horticultural Science, 1997, Vol. 25:
385-390
0114-0671/97/2504-0385 $7.00/0 (c) The Royal Society of New Zealand
1997
Short communication
PDF file of entire paper: medium quality (415K); (scanned from paper original: notes about this process)
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