Eucalyptus grandis X Eucalyptus urophylla have been commercially deployed in South Africa for more than 25 years by some of the large forestry companies. Only in recent years have private farmers had access to the same genetic material.
GXU clones should be planted on your highest potential sites that have deep well drained soils, 900-1000mm of rainfall per annum, mean annum temperatures of 17-22.5oc and altitudes of 0-1100m. GXU are frost sensitive and shouldnot be planted in areas prone to frosting.
GXU have very good disease tolerance. Sunshine Seedlings works closely with NCT, CSIR and FABI. Two of our GXU clones namely GXU 082 and GXU 111 have shown tolerance to the Gall Wasp(Leptocybe invasa). We also produce GXC 215 that should be planted on your drier sites. This clone has also shown good tolerance to the Gall Wasp.
Sunshine Seedlings have been producing GXU cuttings for more than 10 years. Many of the clones planted in trials throughout the country have been felled and results indicate that the right clone planted on the correct site can result in increases of as much as 20% as compared to the seedling control for the specific area.
Sunshine currently produces four GXU clones, all have been extensively tested and have proven to have their niches. Each clone has different characteristics and performs differently on varioussites. For advice on which clone to plant please contact us at Sunshine.
Another benefit of planting GXU is that they coppice very well and as a result your planting costs are reduced on your second rotation. GXU also canopy very quickly thus reducing weeding under the trees. Sunshine Seedlings produces cuttings from tip cuttings which results in plants that have a root system very similar to that of a seedling.
Sunshine will have large quantities of GXU for deployment from April to August and would be happy to advise any interested farmers on what clone would perform best on their farm.