Evaluation of Treatments in 2003 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  Camden Point                  NC    Camden         Btk    38BIUx1  7378     0.81     ---    2.38   12
 2  Shiloh                        NC    Camden         Btk    38BIUx1  6536     0.73     ---    0.60   12
 3  Knotts Island                 NC    Currituck      Btk    38BIUx1   513     0.67     ---    5.30   80
 4  Sunbeam1                      NC    Hertford       Btk    38BIUx1   773     0.98     ---    3.23   9
 5  Devil's Gut                   NC    Martin         Btk    38BIUx2   304     1.00     ---    0.00   10
 6  Sunbeam2                      NC    Northampton    Btk    38BIUx1   272     0.98     ---    0.77   9
 7  Walnut Cove                   NC    Stokes         Btk    38BIUx2   509     0.99     ---    5.62   2
 8  Princeton                     VA    Bland          MD     6g       7929     0.90    0.45    0.34   42
 9  Rocky Gap                     VA    Bland          MD     6g       7826     0.94    0.61    0.28   42
10  Hillsville1                   VA    Carroll        MD     6g       2803    -0.45    0.09   10.75   6
11  Clover                        VA    Charlotte- HalifaxMD     6g       6540     0.97    0.95    0.14   70
12  Willis                        VA    Floyd          MD     6g       3457     0.65    0.61    1.60   10
13  Endicott                      VA    Floyd- FranklinMD     6g      10841    -0.13    0.93    5.38   96
14  Narrows                       VA    Giles          MD     6g      48975     0.84    0.97    0.79   4
15  Cripple Creek                 VA    Grayson        MD     6g        937     0.98    0.86    0.18   2
16  Ante                          VA    Greensville    MD     6g        536     1.00    0.98    0.00   79
17  Buffalo Springs               VA    Halifax        Btk    24BIUx2   303     0.77     ---    1.65   70
18  Omega1                        VA    Halifax        MD     6g        255     0.46    0.76    2.28   64
19  Omega2                        VA    Halifax        MD     6g       3238     0.94    0.92    0.33   66
20  South Boston1                 VA    Halifax        MD     15g      5272     0.89    0.80    1.24   33
21  South Boston2                 VA    Halifax        MD     6g       1000     0.94    0.89    0.26   33
22  South Boston3                 VA    Halifax        MD     6g        726     0.86    0.92    0.85   33
23  Bracey                        VA    Mecklenburg    MD     6g       1460     0.99    1.00    0.09   41
24  Buffalo Boat Ramp             VA    Mecklenburg    MD     6g       1062     0.91    0.93    0.47   38
25  Clarksville North             VA    Mecklenburg    MD     6g        843     0.88    0.79    0.57   38
26  Gretna                        VA    Pittsylvania   Btk    24BIUx2  1517     0.94     ---    0.90   27
27  Mount Hermon                  VA    Pittsylvania   MD     6g        343     0.99    0.92    0.08   59
28  Spring Garden                 VA    Pittsylvania   Btk    24BIUx2   969     1.00     ---    0.11   26
29  Little Walker Mt              VA    Pulaski        MD     6g       3613     0.83    0.82    1.49   102
30  False Cape Park               VA    Virginia Beach NPV    24BIUx2   206     0.55     ---   20.65   80
31  Draper Mt                     VA    Wythe          MD     6g       1250    -0.12    1.00    5.33   82
32  Fosters Falls                 VA    Wythe          MD     6g       3230     1.00    0.99    0.00   82
33  Hillsville2                   VA    Wythe          MD     6g       1260     0.96    0.96    0.14   6
34  Wytheville1                   VA    Wythe          MD     6g        598     0.98    1.00    0.33   1
35  Wytheville2                   VA    Wythe          MD     6g       2600     0.99    1.00    0.28   1
36  Crab Orchard                  WV    Raleigh        MD     6g       7247     1.00    0.95    0.00   17
37  Dorothy                       WV    Raleigh        MD     15g      1887     1.00    1.00    0.00   7
38  Pipestem                      WV    Summers        MD     6g      54441     0.79    0.98    0.67   18
39  Crumpler                      WV    Wyoming        MD     6g      51980     0.95    0.98    0.14   6

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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