1. Tree Architecture and Growth Part 1

2. Apical Growth Apical meristem = bud –Primary growth Preformed Indeterminant or sustained

5. Crown Form Excurrent Decurrent

9. Mechanisms Branch angle Geotropism Weight (gravity)

10. Epinasty Epinastic control –angle and length of side branches –genetics and environment

13. Shade Side shade –Trees do not lose form Shade from above –high shade – low shade –becomes more diffuse –trees can lose epinastic control

15. Cross section

21. Shade Side shade –Trees do not lose form Shade from above –high shade – low shade –becomes more diffuse –trees can lose epinastic control

22. Multilayer vs. Monolayer Multilayer Monolayer

27. Release Interaction of: – the environment (old new) –the silvical characteristics of the tree –tree condition

28. Tree Attributes Amount of foliage Amount of aphotosynthetic area Sun leaves– Shade leaves Epinastic control

29. Priorities for Photosynthate 1.Respiration 2.Foliage – Fine Roots 3.{Reproduction} 4.Primary Growth 5.Secondary Growth – Secondary Compounds

30. Lag in Response Not enough excess photosynthate to add foliage