CLUSTER ANALYSIS 

 74 vs. 79 



UNTREATED AREA 

 74-75 1 1 Tubes 

 77-79 11 Tubes 



E - 74-75 (Early) 

 L - 77-79 (Late) 



2.784 



2.552 



2.320 



2.088 



1.856 



1.624 



1.392 



1.160 



0.928 



0.696 



0.464 



0.232 



0.000 



40 42 37 38 32 37 39 34 32 40 39 33 35 41 41 36 42 34 36 38 33 35 

 ELELELLLLLELLELEEELEEE 



Figure 3.— Dendrogram of soil-water samplers on the untreated area only, 1974-75 and 1977-79. 



Cophenetic correlation = 0.88. 



Table 3.— Sampler groups resulting when the dendrogram in figure 3 is 



cut at a distance of 0.70 



Group 



Number of 

 samplers 



1974-75 



Untreated 



1977-79 



12 

 1 

 2 

 2 

 3 

 1 

 1 



6 



