ISHS Acta Horticulturae 718: III International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation (HortiModel 2006)
GROWTH RATES OF ROSE CV. ´CHARLOTTE´ IN BOTH SOIL AND SOILLESS CROP SYSTEMS IN THE BOGOTÁ PLATEAU, COLOMBIA |
| Authors: | A. Farias-Arias, L.A. Chaparro-Torres, V.J. Florez-Roncancio, B. Chaves-Cordoba |
| Keywords: | growth model, growth rates, bud and stem growth, cut rose, substrates |
| Abstract:
The rose crops system in substrates has been implemented in the Bogotá plateau as an alternative for chemical and physical limitations of soils. The identification of size increment in plants, as a tool to model the growth, permits determination of the differences presented by plants growing in substrates compared to the conventional soil system. The purpose of this study was to determine the changes in magnitude and their growth rates in development of the rose cv. ‘Charlotte’ during flowering. The rose plants were planted in 8 L pots, in: pure burned rice husk, 65% burned rice husk mixed with 35% coconut fiber, 35% burned rice husk mixed with 65% coconut fiber, pure coconut fiber, or loamy soil. The continuous growth of flowering stem was evaluated in terms of length and diameter, number of unfolded five-leaflet-leaves, peduncle length, and flower bud length and diameter. The flowering stem diameter, number of unfolded leaflet-leaves, length of peduncle and diameter of the flower bud were not statistically different among the treatments. It was evident that the plants cultivated in soil produce longer stems and smaller flower buds, while those cultivated in coconut fiber produce flower buds of greater length and diameter, but shorter stems. | |
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