engleski

Influence of pinching and growth retardant on the growth of lavander (Lavandula vera)

The objective of the study was to determine the influence of pinching and/or application of growth retardant on the growth of lavender (Lavandula vera) cv. Lady grown as a pot plant. Plants were pinched at the beginning of the growing period and/or treated two times with a daminozide-based growth retardant (Alar 85), in 0, 1% and 0, 2% solutions, at an interval of 15 days. The trial was set up according to the randomized block scheme with five replications. Plants that were not pinched were taller (27, 5%) than pinched and there were no statistically significant differences between them regardless of the daminozide treatment. A difference at 1% level was recored only between untreated plants treated with a 0, 2% daminozide solution. Plants that were not treated with daminozide had the largest number of lateral branches (6, 0% more) while plants treated with daminozide solution of lower concentration had the smallest number of lateral branches (2, 2% less). Regardless of the daminozide treatment, pinched plants had a smaller number of lateral branches (2, 33% less) compared to plants that were not pinched. Pinching and growth retardant application influenced the height and the number of lavender lateral branches. The lowest plants were obtained with pinching and application of a daminozide solution of lower concentration. Growth retardant application, however, had an adverse effect on the number of lateral branches.

Lavandula vera; pot plant; growth retardant; development

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