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Tree Improvement & Seed Orchard Concerns: Survey Results & Discussion

This article discusses the primary concerns regarding genetic source material for restoration plantings and seed orchard production, based on an informal survey of Southern State Forestry Commissions. The survey gathered responses from four states and identified key issues and needs in these areas. The article also explores topics such as conservation of threatened species and the impact of climate change on seed sourcing.

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Tree Improvement & Seed Orchard Concerns: Survey Results & Discussion

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  1. Tree Improvement Issues:State Survey and Discussion Southern Research Station Hot Springs, AR June 8, 2015

  2. Informal Survey of Southern State Forestry Commissions • Several questions asked, grouped under these three areas • 1. primary concerns regarding genetic source material for restoration plantings • 2. primary concerns regarding seed orchard production • 3. information that landowners need regarding planting stock? • Four states responded (KY, SC, MS, AR)

  3. 1. primary concerns regarding genetic source material for restoration plantings • Pines • Loblolly, slash • Longleaf, shortleaf • Hardwoods • Oaks • cherrybark and nuttall • many others needed • Others • sycamore, basswood, sourwood, beech, yellow poplar, maple, plum, hazelnut

  4. 1. primary concerns regarding genetic source material for restoration plantings • Loblolly (SC, KY, MS), slash (only mentioned once) • Good levels of improvement available (SC, AR) • Concern over future given budget (SC) • Good diversity in orchards and clone banks • Wood quality, drought tolerance needed • Fusiform rust (SC manages with NCTIP info; AR virtually eliminated)

  5. 1. primary concerns regarding genetic source material for restoration plantings • Longleaf, shortleaf • SC-- limited selections in LL orchard; no shortleaf orchard (uses GA) • AR-- good shape with shortleaf • MS-- none, depends on others • Traits needed in longleaf– brown spot resistance, planting hardiness, early height emergence, growth rate and stem/tree form • No seed shortages reported, but concerns about optimal sources mentioned

  6. 1. primary concerns regarding genetic source material for restoration plantings • Oaks • cherrybark and nuttall species most mentioned in orchards and improvement programs • many others needed, with source-known supplies, optimal or local sources • Problems • inconsistent seed yields, inadequate seed sources, expensive to procure, lack of diversity in woods-run collections • Needs • better seed storage, later flowering, known sources, improved genetics, need access to more oak species; more support for WGFTIP • Traits– straightness, wood quality, later flowering

  7. 1. primary concerns regarding genetic source material for restoration plantings • Others-- sycamore, basswood, sourwood, beech, yellow poplar, maple, plum, hazelnut, etc. • Problems • Inconsistent seed yields, inadequate seed sources (supply and genetics), expensive to procure seed • Needs • better seed storage, known seed sources for collection, orchards to mange sources, yields, costs (even genetics) • Traits– survival, growth form; pest resistance-- chestnut and hemlock (non-hardwood)

  8. 1. primary concerns regarding genetic source material for restoration plantings • Seed source availability, management • Local source assumption most used • Some awareness of data that shows southern sources perform better • Most feel the need for more data, especially for hardwoods

  9. 1. primary concerns regarding genetic source material for restoration plantings • Conserving threatened species • From– is good (seed storage, conservation ‘safe’ plantings) -- to no urgency with evidence of some survivors -- responsible thing but low priority given budgets • Strategies • funding problem (KY, others) • diversity kept in • loblolly clone banks (SC) • hardwood species plantings (SC) • some special populations conserved (AR)

  10. 1. primary concerns regarding genetic source material for restoration plantings • Climate change • From– nothing noticeable -- to changes in deployment already made (NCTIP in SC; WGFTIP ok to plant south of Arkansas River sources north of the river) • Good to know planting options (species/sources, new native ranges) in next 50 years (KY) • Drought tolerance becoming more important (AR)

  11. 2. primary concerns regarding seed orchard production • Hybrids (pines) • From– not a concern -- to it’s natural and necessary -- to it’s a problem • AR-- medium for shortleaf (~1/5 years lob late enough to hybridize with shortleaf in a material way) • MS-- small for longleaf (~5% longleaf seedlings are hybrids)

  12. 2. primary concerns regarding seed orchard production • Tree seed supply • KY-- challenged (due to many species needed, difficult to collect from) • Others-- were Ok, but varied confidence in sources • Grasses, forbs, shrubs for ecosystem restoration • From– some interest and needs -- to not applicable or asked for • (NRCS should have a main role in this)

  13. 2. primary concerns regarding seed orchard production • Seed orchards status • KY-- continuing to add (oaks take a long time to produce) • SC-- program in mothballed • AR-- good shape continuing to add • MS-- none

  14. 2. primary concerns regarding seed orchard production • Tree nurseries status • KY-- down to 2 from 4 (1 brand new; 1 upgraded, but needs more investment) • SC-- problems with budget due to low demand • AR-- more hardwood than pine since 2004 • MS-- none, depend on others

  15. 3. information that landowners need regarding planting stock? • Genetic variation in seed supply • KY-- species the main issue, genetic variation not on radar • SC-- longleaf orchard to limited, no shortleaf they use GA • AR-- good shape that to WGFTIP, except for non-improved oak collections likely highly related • MS-- not aware

  16. 3. information that landowners need regarding planting stock? • Container stock issues • From– none -- to lack of tap root in pine (although evidence is not compelling) • need to dig up older trees • no wind through issues reported

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