Yield and quality of kale as affected by nitrogen side-dressing, spacing and supplementary irrigation.
Abstract
In trials with the cv. Thousand Headed wide spacing (76 × 60 cm) increased mean fresh weight, branching and leaf production. Close spacing (76 × 30 cm) significantly increased total leaf yield/ha but decreased leaf:petiole ratio/plant. Interaction between N (0 or 135 kg/ha) and spacing for yield was not significant. Supplementary irrigation increased leaf size of plants that were widely spaced and side-dressed with N. Side-dressing had no significant effect on quality of leaves but tended to increase total N and dietary fibre. Close spacing tended to increase dietary fibre and thiocyanate ion contents in the leaves. Side-dressing combined with irrigation generally increased nitrate N in the leaves.
URI
http://www.cabdirect.org/abstracts/19850328065.html?resultNumber=4&q=au%3A%22Chweya%2C+J.+A.%22http://hdl.handle.net/11295/83556
Citation
Acta Horticulturae 1984 No. 163 pp. 295-301Publisher
Univeristy of Nairobi