Evaluation of Treatments in 1999 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  WallaceMill                   NC    Caswell        Bt     2        1600      ---     ---     ---   89
 2  WolfIslandCreek               NC    Caswell        PF     1         773     0.72    1.00    0.88   80
 3  Manteo                        NC    Dare           PF     1         485     1.00   -4.12    0.00   -1
 4  DevilsGutPF                   NC    Martin         PF     1        3000    -0.48   -0.66   33.54   149
 5  DevilsGutNPV                  NC    Martin         NPV    1         500     0.99     ---    0.20   149
 6  BeaverpondCreek               NC    Northampton    PF     1         613     1.00    0.99    0.00   126
 7  KirbysCreek                   NC    Northampton    PF     1         500     1.00    1.00    0.00   139
 8  StorysCreek                   NC    Person         Bt     2         700     0.99     ---    1.98   104
 9  DanRiverNC                    NC    Rockingham     PF     1         500     1.00    0.95    0.00   68
10  EllingtonBranch               NC    Warren         PF     1         500     0.92    0.88    0.73   121
11  Dugspur                       VA    Carroll        DM     1         988     1.00     ---    0.15   52
12  Lindside                      VA    Giles          PF     1         350     0.97    0.84    0.30   49
13  Skippers                      VA    Greensville    PF     1         176     1.00    0.99    0.00   126
14  Omega                         VA    Halifax        PF     1        3829     0.99    0.96    0.11   110
15  SouthBoston                   VA    Halifax        Bt     2        3807     0.99     ---    0.11   103
16  DanRiverVA                    VA    Halifax        PF     1        1235     0.98    0.94    0.11   110
17  OakLevel                      VA    Halifax        PF     1        1290     0.96    0.84    0.21   96
18  Riverdale                     VA    Halifax        PF     1        1482     0.97    0.87    0.20   109
19  GlenwoodChurch                VA    Halifax        PF     1        1732     0.93    0.90    0.57   103
20  Turberville                   VA    Halifax        PF     1         988     0.97    0.86    0.30   99
21  NortheastEden                 VA    Henry          PF     1         988     1.00    1.00    0.08   70
22  Ingram                        VA    Pittsylvania   PF     1        1482    -0.21    0.95    8.39   95
23  Whitmell                      VA    Pittsylvania   PF     1         741     0.86    0.75    0.95   77
24  Ringgold                      VA    Pittsylvania   PF     1        2223     0.94    0.92    0.49   160
25  BarkersBranch                 VA    Pittsylvania   PF     1         247     1.00    0.98    0.01   89
26  MountainHill                  VA    Pittsylvania   PF     1        1810      ---     ---     ---   89
27  Brosville                     VA    Pittsylvania   PF     1         494     1.00    1.00    0.00   80
28  Wise                          VA    Wise           PF     1         905     1.00    1.00    0.00   25
29  Quinwood                      WV    Greenbrier     Bt     2         606     0.98     ---    0.25   48
30  HickoryRidge                  WV    Greenbrier     PF     1        1870     0.34   -0.59    0.39   48
31  HugginsKnob                   WV    Greenbrier     PF     1         808     0.90    0.80    0.28   48
32  Pettry                        WV    Mercer         PF     1         365     0.95    0.99    2.56   42
33  Talcott-Bt                    WV    Summers        Bt     2         391     0.98     ---    0.44   47
34  Talcott-DIM                   WV    Summers        DM     1          53     0.98     ---    0.40   47

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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