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Sven M.G. de Vries Alterra, Wageningen

Use and Improvement of Larch in the Netherlands TREEBREEDEX meeting Hann. Münden, Germany 25-26 March 2009. Sven M.G. de Vries Alterra, Wageningen. Facts & figures of Larch in The Netherlands. 320.000 ha covered with forest = app. 12% area NL

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Sven M.G. de Vries Alterra, Wageningen

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  1. Use and Improvement of Larch inthe Netherlands TREEBREEDEX meeting Hann. Münden, Germany 25-26 March 2009 Sven M.G. de Vries Alterra, Wageningen

  2. Facts & figures of Larch in The Netherlands • 320.000 ha covered with forest = app. 12% area NL • 19.000 ha covered with Larch= app. 6% forest area NL (European, Japanese & Hybrid Larch) • NL not within the distribution range of Larch • Most Larch forest is planted • Majority with imported plant material (mostly Japan, Germany, Slovakia & NL) • Interest in Larch is decreasing (conifers in general)

  3. Larch in The Netherlands • Significant tree species in the 60s and 70s • Imported FRM + little NL • Wood production • Selection & Breeding activities in Larch

  4. Selection & Breeding activities in Larch • History of improvement work started in early 1949 • Phenotypical selection of stands 1949 • First Provenance trials in 1955 • First list of selected stands 1967 • First Hybrid Larch seed orchard since 1969 (2 ha in production since 1975) • Second seed orchard in 1971 (1 ha) • First tested material 1995

  5. Selection & Breeding activities in Larch • 1949 - 1965 individual plus trees selected in Dutch (seed) stands, provenance & progeny trials • Japanese and European Larch • Open pollinated/controlled crossings -> nursery testing & comparative trials • Early selection basis for first generation Hybrid larch seed orchards • Based on flower phenology, survival and growth

  6. Future strategies • In the 90’s interest collapsed • Until now both seed orchards still more or less in operation • Recently discussion on re-establishment of one Hybrid larch seed orchard identical to first one • Need for seed not the reason, but conservation of genotypes for “better” times

  7. Larch in The Netherlands Thank you for your attention!

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