Comparative evaluation of different pinching approaches on vegetative and reproductive growth of carnation (Dianthus caryophyllus)
2007
Ahmad, I. (University of Agriculture, Faisalabad (Pakistan). Inst. of Horticultural Sciences) | Ziaf, K. (University of Agriculture, Faisalabad (Pakistan). Inst. of Horticultural Sciences) | Qasim, M. | Tariq, M.
Effect of pinching, both manual and chemical - using alar and cycocel (CCC), was ascertained for improving the production of compact dwarf carnation var. Red Sim. Two levels of each hormone, i.e., alar at 200 and 400 mg L-1 and cycocel (CCC) at 500 and 1000 mg L-1 were sprayed for the purpose. Plants were compact and dwarf with increased number of shoots and maximum number of flowers, when treated with higher level of cycocel (1000 mg L-1) but leaf count and flower size were negatively affected. Dwarfness, number of branches and reduction in leaf area were directly correlated with the concentration of chemicals. Branch size increased with a concomitant reduction in number of branches per plant. Pinching delayed flowering and shortened the blooming period, while pinching and both chemicals decreased flower size considerably. Lower level of alar (200 mg L-1) proved ineffective but higher concentration (400 mg L-1) had remarkable effects on different vegetative and floral characteristics of carnation.
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