Hybrids are composed of scientifically and systematically selected and intentionally combined qualities tailored to pre-conceived socio-economic and ecological situations. Cloning ensures transfer of pure desired genetic material constituted in the hybrid. There is no undesirable stray/accidental cross pollination of the unwanted varieties.
Eucalyptus clones have no taproots and therefore do not harvest water from deeper layers of soil. Clones grow faster because they do not have very deep roots. Usually, more than 50 percent of the tree’s roots are in the top six inches of soil. Most favourable growing conditions are in the upper profile of soil; moisture and nutrients are first available near the surface in water and nutrient cycling. Roots extend laterally for considerable distances.
The longitudinal grains of the stem are straighter and uniform because they are not subjected to the growth-halt shocks and stresses resulting from the taproots injuries, as they struggle o penetrate the hard soil pan, stones and rocks.
Hybrids are capable of harnessing the best qualities of their constituent species, so they perform better under a greater variety of conditions that challenge non-hybrids.
By selecting individual trees (the best performers), the shape, size and height will be consistent. For qualities that are beneficial for products such as transmission poles, it is extremely and commercially important to get a very tall-straight-uniform pole that attracts the best price in the shortest possible time.
- Hybrids also have more resistance to most tropical pests and diseases that attack non-hybrid trees.
- Hybrids can adapt better to a wider range of climatic and soil conditions.
- Hybrids can provide higher and faster yields especially if planting and maintenance are done adequately.
Uganda receives rainfall of between 800mm per annum (in the drier parts) and 2000mm per annum (in the Lake Victoria region), providing a great planting climate for a variety of tree hybrids.