Evaluation of Treatments in 2001 in VA, WV, and NC

  
Index of treatment success
T = 1 - [Nt/Nt -1]*[nt -1/nt]
Index of colony presence
C = Nt/nt

Map of treatment blocks

Table with full information

(view with Excel, see legend)
Treatment Evaluation
Explained
 		Nt and nt are average moth counts in pheromone traps in year t in the treatment block and in the control area around it, respectively. Treatment is done in year t. In the case of mating disruption or intensive trapping, evaluation is performed in year t +1. Thus, Nt and nt in equations for T and C are replaced by Nt+1 and nt+1. If values of nt-1 or nt are less than 0.05, then they are replaced by the value of 0.05 for estimating of T. Treatment is successful if T > 0.67; partially successful if 0.33 < T < 0.67; and unsuccessful if T < 0.33. If C is much >1, then the colony is still present and may require additional treatments.

 #  Block Name                    State County         Agent  Dose    Area,ac    T      T2       C    PPA 
 1  Devil's Gut                   NC    Martin         MD     30 g x  1  515     0.37    1.00  110.68   281
 2  Endicott                      VA    Floyd          MD     15 g x 1 1538     0.96    0.99    0.54   238
 3  Huffville                     VA    Floyd          MD     15 g x 1  922     0.99    0.91    0.08   224
 4  Bent Mtn                      VA    Franklin       MD     15 g x 129271     0.96    0.86    0.10   232
 5  Adams Grove                   VA    Greensville    MD     15 g x 1 1112     0.98    0.94    0.86   278
 6  Omega                         VA    Halifax        MD     15 g x 1  988     0.99    0.96    0.09   266
 7  Virgilina                     VA    Halifax        MD     15 g x 1  498     1.00    0.77    0.00   265
 8  Axton                         VA    Henry          MD     15 g x 1 1269     0.82    0.95    1.95   244
 9  Franklin                      VA    Isle of Wight  MD     15 g x 1  556     0.98    0.97    1.20   280
10  Brush Mountain                VA    Montgomery     MD     15 g x 1 3462     0.94    0.68    0.09   226
11  Pilot                         VA    Montgomery     MD     15 g x 1 4867     0.99    0.98    0.03   224
12  Brosville                     VA    Pitt           MD     15 g x 1 1978     0.93    0.85    0.51   246
13  Chatham                       VA    Pitt           Btk    24 BIU x  2 1712     0.73     ---    4.58   253
14  Ingram                        VA    Pitt           Btk    24 BIU x  2  567     0.99     ---    0.19   261
15  Java                          VA    Pitt           Btk    24 BIU x  2 1662     1.00     ---    0.37   258
16  Sandy Level                   VA    Pitt           MD     15 g x 1 1088     0.86    0.78    0.62   245
17  Spring Garden                 VA    Pitt           MD     15 g x 112930     0.89    0.88    1.17   256
18  Glenvar                       VA    Roanoke        MD     15 g x 1 3450     0.95    0.96    0.16   234
19  Powellton                     WV    Fayette        MD     15 g x 1 7321     0.47    0.99    1.16   163
20  Dawson                        WV    Greenbrier     MD     15 g x 1 3573     0.83    0.66    0.25   193
21  Mammoth                       WV    Kanawha        MD     15 g x 1 1911     0.87    0.44    0.09   162
22  Lerona                        WV    Mercer         MD     15 g x 1  922     0.96    0.93    0.11   189
23  Hix                           WV    Summers        MD     15 g x 122868     0.98    0.91    0.06   193

PPA = Potential Problem Area, detected by the Decision Algorithm from previous year data.
Treatment agents: Btk (or Bt, BT) = Bacillus thuringiensis var. kurstaki;
MD (or PF) = Mating disruption with pheromone flakes containing disparlure;
NPV = virus, preparation Gypchek;
DIM = Dimilin (=diflubenzuron);
Trap = Mass trapping;

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