Projects Total Hours: 70
Truffle Trees Total Hours: 69.58
ALL TREES:                      
                   
Week Truffle Hours Initial Measurements   Final Measurements Change in Measurements   % Change
  Average Height   40.3   Average Height   43.2   Average Height   2.9 7.2%
1 10:20   Range of Heights   62.0   Range of Heights   74.5   Range of Heights   12.5 20.2%
2 8:50          
3 9:55   Average Caliper   0.7   Average Caliper   0.8   Average Caliper   0.1 11.6%
4 8:55   Range of Calipers   1.0   Range of Calipers   1.3   Range of Calipers   0.3 31.5%
5 5:30
6 6:10 DOUGLAS FIR MULCH TREATMENT:                  
7 9:15                    
8 0:40 Initial Measurements   Final Measurements Change in Measurements   % Change
9 1:05   Average Height   39.9   Average Height   43.1   Average Height   3.2 8.0%
10 1:35   Range of Heights   58.0   Range of Heights   73.5   Range of Heights   15.5 26.7%
         
  Average Caliper   0.7   Average Caliper   0.8   Average Caliper   0.1 13.3%
Summary / Conclusions   Range of Calipers   0.8   Range of Calipers   1.1   Range of Calipers   0.3 31.1%
                                                                                                                                                         Truffle Tree Experiment  -  Given the problems associated with accurate measurements, the time span of the experiment was short and therefore the conclusions reached are somewhat tentative.  It does appear that the Flame Treatment (using a propane torch to keeps the weeds down) allows the largest increase in tree size (height and caliper).  The Douglas Fir Mulch allows almost similar incrases while the Landscape Fabric, in both cases (height and caliper increases) had smaller increases in size.  Of course, the Landscape Fabric is also the method that  requires the least amount of work and the largest expense (at least in the short term) :) LANDSCAPE FABRIC TREATMENT:                  
                   
Initial Measurements   Final Measurements Change in Measurements   % Change
  Average Height   39.0   Average Height   40.6   Average Height   1.7 4.3%
  Range of Heights   65.0   Range of Heights   66.0   Range of Heights   1.0 1.5%
         
  Average Caliper   0.7   Average Caliper   0.8   Average Caliper   0.1 8.4%
  Range of Calipers   1.3   Range of Calipers   1.3   Range of Calipers   0.0 2.8%
PROPANE FLAME TREATMENT:                    
                   
Initial Measurements   Final Measurements Change in Measurements   % Change
  Average Height   40.5   Average Height   44.3   Average Height   3.8 9.4%
  Range of Heights   57.5   Range of Heights   71.5   Range of Heights   14.0 24.3%
         
  Average Caliper   0.7   Average Caliper   0.8   Average Caliper   0.1 13.2%
  Range of Calipers   0.9   Range of Calipers   1.2   Range of Calipers   0.3 35.6%