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Nordwestdeutsche Forstliche Versuchsanstalt, Hann. Münden

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Presentation on theme: "Nordwestdeutsche Forstliche Versuchsanstalt, Hann. Münden"— Presentation transcript:

1 Nordwestdeutsche Forstliche Versuchsanstalt, Hann. Münden
Activities for the Improvement of Forest Reproductive Material of Douglas-fir in North-West Germany Hans-Martin Rau Nordwestdeutsche Forstliche Versuchsanstalt, Hann. Münden

2 Content Comparative tests with progenies from the origin and man made stands Typical results Establisment of seed orchards Establishment of future seed collection stands Investigation of stands in respect to phenotypical or genotypical characters Silvicultural consequences Status and objectives

3 1. National provenance trials
43 sites in Germany in North-West Germany 29 sites 37 provenances plot size m² without replications provenance trial from 1956

4 2. International provenance trials
IUFRO sown 1970 and 1973 - 23 sites in Germany, 17 in NW-Germany - 126 origins present on 1 up to 22 sites - plot size 64 up to 296 m² - 3 replications EUDIREC (B, D, E, F,GB) - in Germany 1 site only - 3 provenances, 5 stands, 8 seed orchards - plot size 144 m²

5 3. Other trials in NW-Germany
32 trials established between 1969 and 1995 Material often a mixture of… - provenances from the natural range (408) - German stands (161) - German seed orchards (6) - single tree progenies (ca. 600) - controlled pollinations (53) - clones (351) Volume / ha (percent of standard mean) at age 15

6 IUFRO Douglas-fir provenance experiment 1970 assessment at age 27 volume per ha in % of special mean
n = number of progenies within each group BC-N BC-NE Shusw. Lake W-E BC coast Vanc. Isld. Olymp. Penins. Puget Sound West. Casc.W. East. Casc.W. South. Casc.W. CoastO. West. Casc.O. Cal. 10 3 22 6 7 5 12 9 2

7 IUFRO Douglas-fir provenance experiment I assessment at age 27
straight trees in % of special mean n = number of progenies within each group BC-N BC-NE Shusw. Lake W-E BC coast Vanc. Isld. Olymp. Penins. Puget Sound West. Casc.W. East. Casc.W. South. Casc.W. CoastO. West. Casc.O. Cal. 10 3 22 6 7 5 12 9 2 10 3 22 6 7 10 7 5 12 9 5 3 2 3

8 IUFRO Douglas-fir provenance experiment I
OKA IUFRO Douglas-fir provenance experiment I Trees with problematic bark (rough, soft, easy to remove) > 5 % of the trees problematic < 5 % of the trees problematic Surface of bark: rough

9 Testing German stands Results at age 15 (dark columns stands approved as tested)

10 Seed orchards Types of orchards 7 grafting seed orchards
8 cutting seed orchards 1 combined seed orchard Number of clones 45 – 683 Sizes 1.5 – 12.6 ha Establishment Photo: ASP Teisendorf

11 Future seed collection stands
former trials later on used as seed collection stands small plots bad progenies shall be removed before approval stands especially established for seed collection purposes 10 well tested provenances 20 sites isolated from other Douglas-fir stands > 2.0 ha

12 Investigation of stands by genetical means

13 Phenotypical investigation of stands
Features Discolouration of needles or needlecast Heavy branchiness independent from spacing Stem crookedness Deeply fissured, soft and easily removable bark Resin flow without injuries High mortality

14 Silvicultural consequences
Stands of problematic provenance should be reduced to a minimum The reqirements for a sustainable procurement with suitable seeds should be met Natural regeneration of maladapted stands should be stopped

15 Current status concerning Douglas-fir
Criteria NW-FVA Germ. Fed. Republic active trials 40 ? established since 1960 no. of selected stands 827 2293 no. of tested stands 13 17 no. of qualified seed orchards 6 9 no. of tested seed orchards not approved seed orchards 1

16 Amount of annually collected seeds
Douglas-fir kg 85301 85302 85303 85304 85305 Other regions / categories Regions of provenance: For selected category 1990/91 91/92 92/93 93/94 94/95 95/96 96/97 97/98 98/99 99/00 00/01 01/02 02/03 03/04 04/05 05/06 06/07 07/08

17 Recommended „breeding zones“ of DF
Region of provenance Forest district / Dept. Significantly superior in…… Breeding zone Nordostdeutsches Tiefland außer Schleswig Holstein LFA – FA Schildfeld a4 / a5 growth BB, MV, SH, NI, SN, (< 400 m asl.) SN Mittel- und Ostdeutsches Tief- und Hügelland Amt f. Forstwirtsch. Templin, Stadtw. Lychen 6 a2 BB, ST, SN, (< 400 m asl.) SN West- und Süddeutsches Hügel- und Bergland sowie Alpen, kolline Stufe FA Arnsberger Wald 323 D BY, /05 NW v. Baumbach-Frielingen 21 C BW, BY, HE, NI, SH, ST FA Jossgrund 96 A u. 97 1 FA Jossgrund A 0 FA Melsungen A 0 growth, straightness FA Michelstadt growth, fine branches FA Michelstadt Stadt Breuberg 21 B FA Romrod A 2 BW,BY, HE, NI, SH, ST FA Romrod B 2 FA Weilmünster Gemd. Weinbach 116 A 0 FA Weilmünster Gemd. Weinbach 613 A 0 FA Weilrod A 2 growth, resistance to needle cast FA Hürtgenwald 819 B

18 Recommended „breeding zones“ of DF
Regions of provenance Forest district / Dept. Significantly superior in…… Breeding zone West- und SüddeutschesHügel- und Bergland sowie Alpen, montane Stufe FA Frankenberg B 0 growth BW, HE, /05 BY ,Bergland von NI und ST FA Königstein C 1 growth, straightness FA Hochwald Nordwestdeutsches Tiefland mit Schleswig-Holstein Seed orchard „Humptulips „NFA Harsefeld 42 b BB, HE, NI, SH, / 05 BY Südostdeutsches Hügel- und Bergland Intraspecific combination „Tharandt I“ FoB Bärenfels, viridis x glauca (Tharandt Zucht-Nr. 23 x NLP, Lohmen Zucht-Nr. 84) growth, frost resistance SN, SN Intraspecific combination „Tharandt IV“ FoB Bärenfels, viridis x glauca , (Tharandt Zucht-Nr. 24 x NLP, Lohmen Zucht-Nr. 84)

19 Regions of provenances of DF
Figure acc. to BLE (2006)

20 Conclusions Douglas-fir is one of the most intensively investigated tree species in respect to provenance research and progeny testing In addition many efforts are made to secure future seed procurement ( tested seed collection stands, seed orchards,…) More and more approved seed collection stands but also normal stands will be checked according to phenotypical and genotypical features Currently there is no interest in further selection processes


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