Reforestation - Dr. Jimmie Yeiser, UAM

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  • 1. THANK YOU! • Thank you AFA for inviting me to speak today. • Thank you friends for the memories. • Thank you students for the privilege of sharing the classroom for you.
  • 2. New Reforestation Technology Trends for Improved Forest Health and Economic Impact Dr. Jimmie Yeiser University of Arkansas at Monticello Provost and Vice Chancellor for Academic Affairs October 2, 2013 Arkansas Forestry Association
  • 3. PURPOSE • Consider your silviculture options
  • 4. New Reforestation Technology Trends • New – Familiar but never used – Different use for me – Totally new and never heard of before • Reforestation – Genetics – Site preparation/amelioration – Competition control – Planting • Technology – Application of scientific knowledge for practical purposes • Trends – Implies change over time Jimmie Yeiser * University of Arkansas at Monticello
  • 5. DRIVING OUR TRENDS • Demographics • Environmental quality • Demand for forest resources • Invasive species/exotics Jimmie Yeiser * University of Arkansas at Monticello
  • 6. TRENDS • 1--Improved deployment strategies of genetic material for enhanced yield and forest health • 2--Improved site quality for higher realized genetic performance • 3--Improved integration of treatments for improved yield and forest health
  • 7. CONCEPTUAL UMBRELLA Phenotype=Genotype+Environment+Interactions P=the physical appearance; what you see G=genotype; genes the tree has; potential performance E=environment; site quality; number of silviculture treatments practiced; realization of the genetic potential GxE=specific genetic and environment combinations GxT1xT2=specific treatment combinations Jimmie Yeiser * University of Arkansas at Monticello
  • 8. INTERACTIONS Female 1 Female 1 Female 2 Female 2 Growth Growth Site 1 Site 2 Site 1 Site 2 Treatment 1 Treatment 2 Growth Site 1 Site 2 Treatment 1 Treatment 2 Growth Site 1 Site 2 Jimmie Yeiser * University of Arkansas at Monticello
  • 9. Height High Low HighMean Site Height S LA SE TX N LA S AR Jimmie Yeiser * University of Arkansas at Monticello Seed Source by Environment Interaction
  • 10. 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 0.5 1 1.5 2 2.5 3 3.5 4 T r e a t m e n t D B H ( I N ) Average Site DBH 24-in Subsoiling 12-in Subsoiling Machine Planting Hand Planting Linear Regression 24-in Subsoiling Linear (24-in Subsoiling) Linear Regression 12-in Subsoiling Linear Regression Machine Planting Linear Regression Hand Planting F1igure 1. Linear regression of DBH for each treatment plotted over site mean DBH, for 21 upland sites. Treatments are as follows: 24-in subsoiling and hand plant, 12-in subsoiling and hand plant, machine plant only and flat hand plant only. Responsive Responsive Possibly Responsive LOBLOLLY PINE YEAR 7
  • 11. CONTAINERIZED SEEDLINGS • Loblolly pine – Expansion of the planting season – Perched water tables – Northern movement – Western movement – Interplant different genetics Jimmie Yeiser * University of Arkansas at Monticello
  • 12. MACHINE PLANTING • With supplements – Water – Fertilizer – Root starter – Insecticides • Two row planters • Containerized seedlings Jimmie Yeiser * University of Arkansas at Monticello
  • 13. SITE AMELIORATION RIPPING • Loblolly pine – Upland, rocky sloping sites – Facilitate planting for increased production and survival – Capture surface water Jimmie Yeiser * University of Arkansas at Monticello
  • 14. SITE AMELIORATION BEDDING • Loblolly pine – Poorly drained sites – Improved drainage for increased survival and growth Jimmie Yeiser * University of Arkansas at Monticello
  • 15. SITE AMELIORATION Combination Plow For sites with compaction and drainage. Various treatments to perform their respective task 5n1 is the most sophisticated of which I am aware Jimmie Yeiser * University of Arkansas at Monticello
  • 16. SITE AMELIORATION • Eco-till – Upland/transition sites with a pan and not needing bedding. Less costly and site disturbance than a combination plow, harder to see the trench, drainage in low spots may be an issue. • Unknown (Mulch Till) – Sites with deficient organic matter and needing tillage. Reduced disturbance. Jimmie Yeiser * University of Arkansas at Monticello
  • 17. WEED CONTROL • Still screening chemistries • Same chemistry • More timings of the products developed for specific timings Jimmie Yeiser * University of Arkansas at Monticello
  • 18. Weed Control Good Answers Lacking Jimmie Yeiser * University of Arkansas at Monticello
  • 19. ASSESSING OPTIONS • Consider the new treatment contribution within the entire silvicultural system • Harvest • Debris management • Tillage Genetics Yield • Weed control Planting stock • Nutrition Planting spacing • Thinning • Harvest Jimmie Yeiser * University of Arkansas at Monticello
  • 20. CLOSING • Thank you for the privilege of speaking with you today. • I hope that something I said today will cause you to reflect on your silvicultural program as it pertains to: • Improved deployment strategies of genetic material for improved yield and health • Improved site quality for higher realized genetic performance • Improved integration of treatments for improved yield and health Jimmie Yeiser * University of Arkansas at Monticello
  • 21. THANK YOU