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Table 2 Optimal concentration combinations of four trace elements affecting the proliferation of Paenibacillus polymyxa Pp-7250

From: Effect of four trace elements on Paenibacillus polymyxa Pp-7250 proliferation, activity and colonization in ginseng

Test number Cu2+ (A) Fe2+ (B) Zn2+ (C) Mn2+ (D) OD600 60 h  
Results of the orthogonal experiment
 1 1 1 1 1 0.9379  
 2 1 2 2 2 1.0552  
 3 1 3 3 3 0.7374  
 4 2 1 2 3 0.6545  
 5 2 2 3 1 0.6614  
 6 2 3 1 2 1.2293  
 7 3 1 3 2 0.7192  
 8 3 2 1 3 0.8526  
 9 3 3 2 1 0.9106  
 T1 2.7305 2.3116 3.0198 2.5099 7.7581  
 T2 2.5452 2.5692 2.6203 3.0037   
 T3 2.4824 2.8773 2.1180 2.2445   
 The average k1 0.9102 0.7705 1.0066 0.8366   
 k2 0.8484 0.8564 0.8734 1.0012   
 k3 0.8275 0.9591 0.7060 0.7482   
 R value 0.0827 0.1886 0.3006 0.2530   
  SS df MS F F0.05(2,2) Significant
Variance analysis
 A 0.0111 2 0.0056 56.0000 19.0000 *
 B 0.0534 2 0.0267 267.0000   **
 C 0.1361 2 0.0681 681.0000   ****
 D 0.0989 2 0.0495 495.0000   ***
 Error 0.0001 2