engleski

Effect of cultivar and thinning on growth of poinsettia

Effect of thinning to 3, 4, 5 or 6 lateral shoots on vegetative growth parameters of nine poinsettia cultivars was studied by consecutive measurements of growth in two separate experiments. During growth season apparent differences in vegetative growth parameters between cultivars were observed. In both experiments cultivars affected plant height and diameter, and diameter of lateral stem. The number of laterals affected final plant height in one experiment, and lateral stem diameter in both experiments. Stem diameter decreased as number of laterals increased. There was not much justification to recommend shoot thinning in poinsettia production.

Euphorbia pulcherrima; lateral stem diameter; number of shoots; plant diameter; plant height

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