Intermountain Forest Tree Nutrition Cooperative Nutrition Effects on Future Forest Productivity Harvest by Site Quality Study Intermountain Forest Tree Nutrition Cooperative “2013 Annual Meeting” University of Idaho Terry M. Shaw

Study Design Whole-Tree Bole-Only Low Slash High Slash No Slash NEW RESEARCH INITIATIVE - Objectives What site factors??? Light, moisture, temperature, Nutrients (PM) No Slash Veg-Control

High Slash w/veg control Study Treatments Block 1 Bole Only Block 2 Whole Tree Block 3 Block 4 High Slash Low Slash High Slash w/veg control w/veg control No Slash NEW RESEARCH INITIATIVE - Objectives What site factors??? Light, moisture, temperature, Nutrients (PM)

Plot Layout 21 Plot Monitoring Trees North Access Road Unit Boundary Block 4 Whole Tree Block 3 Bole Only Block 1 Block 2 P19 P24 P22 P17 P18 P16 P14 P12 P13 P11 P8 P9 P10 P7 P6 P5 P3 P2 P1 P4 P21 P20 P15 P23   21 Plot Monitoring Trees

Ash/Glacial/Quartzite Study Sites Site Region/ Owner Soil Parent Material Site Quality Canus NEO/ Forest Capital Ash/Loess/Basalt High Lovell NID/ IDL Loess/Quartzite Low Ruby Potlatch Loess/Ash/Quartzite Slice NEWA/ WADNR Ash/Glacial/Quartzite Phill Bennett Lumber Loon USFS/Umatilla Ash/Basalt NEW RESEARCH INITIATIVE - Objectives What site factors??? Light, moisture, temperature, Nutrients (PM)

Site Characteristics Site Site Index Basal Area Height QMD Volume Cu/ft/ac Bd/ft/ac Canus 73 134 86 11.9 4,218 22,605 Lovell 77 80 68 11.6 2,224 11,736 Ruby 69 123 13.2 3,675 19,858 *Slice 57? 90 81 11.8 2,569 13,208 Phill 71 78 89 11.3 2,370 12,646 *Loon 70 130 93 11.5 4,195 19,263 *Does not include “Heritage “ leave trees.

FVS PROJECTED STAND BIOMASS *Does not include “Heritage “ leave trees.

FVS-NUTCAL PROJECTED STAND NITROGEN *Does not include “Heritage “ leave trees.

SITE SLASH RETENTION

SITE NITROGEN RETENTION

Retention (tons/acre) Site Characteristics Slash Retention (tons/acre) Volume Site WTH BOH Cu/ft/ac Bd/ft/ac Canus 11.3 17.3 4,218 22,605 Lovell 4.3 12.3 2,224 11,736 Ruby 7.1 19.6 3,675 19,858 Slice 8.5 14.7 2,569 13,208 Phill 6.1 9.6 2,370 12,646 Loon 10.5 25.3 4,195 19,263

Slice Above One-Year Caliper Growth

Slice Above One-Year Height Growth P < 0.10

Canus Three-Year Caliper Growth b bc c a a a P < 0.10

Canus Three-Year Height Growth b c c a a a P < 0.10

Canus Three-Year Cumlative Mortality

Forest Soil Disturbance 0 = No compaction, depressions, displaced forest floor (FF)/soil displacement and erosion 1 = slight compaction, faint depressions, FF intact, slight soil structure (SS) change (crumbly to platy), slight erosion 2 = Compaction and depressions moderately deep, FF partially intact or missing, SS change continuous, erosion moderate 3 = Compaction and depressions deep, FF missing, SS change continuous-deep, erosion severe

Canus Three-Year Caliper and Height Growth by Forest Disturbance

Slice Above Soil Temperature and Moisture

Canus Soil Temperature by Treatment

Harvest by Site Quality Study SUMMARY Plant Loon SP2013 Total Biomass (Carbon) and Nutrient Budget (above and below ground) Surface Soil and Resin Capsule Nutrient Assessment Long Term Growth Productivity Assessment Soil-Site Disturbance Assessment