Evaluation of Treatments in 1995 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  PleasantHill                  VA/NC Greensville    Bt     1        3351     0.97     ---    0.72   139
 2  Boykins                       VA/NC Southhampton   Bt     1        4096     0.85     ---    2.28   145
 3  Check                         VA    Floyd          Bt     2        1334     1.00     ---    0.02   66
 4  Cascades                      VA    Giles          Bt     2        6463     0.58     ---    6.28   48
 5  Goldbond                      VA    Giles          Bt     2        2270     0.99     ---    0.20   48
 6  Narrows                       VA    Giles          PF     1         118     1.00    1.00    0.00   44
 7  PetersMountain                VA    Giles          PF     1         654     0.95    0.95    0.14   48
 8  Hiwassee                      VA    Pulaski        Bt     1        1257     1.00     ---    0.00   167
 9  Margarettsville               VA    Southhampton   Bt     1        6997     0.98     ---    1.49   142
10  PineyRidge                    VA/WV Giles          PF     1         486     1.00    1.00    0.00   43
11  PinnacleRock                  WV    Mercer         PF     1         125     1.00    2.28    0.00   13
12  EadsRidge                     WV    Monrie         Bt     1         371     0.89     ---    1.11   53
13  ElkKnob                       WV    Monrie         Bt     2         669     0.59     ---    3.09   53
14  LaurelCreek                   WV    Monrie         Bt     1         471     0.89     ---    1.33   53
15  Lindside                      WV    Monrie         Bt     2        1761     0.96     ---    0.87   48
16  WillowBend                    WV    Monrie         Bt     2        1514     0.84     ---    2.54   48
17  WolfCreek                     WV    Monrie         Bt     2         336     1.00     ---    0.02   51
18  Daniels                       WV    Raleigh        Bt     2         205     0.84     ---    3.20   60
19  ChestnutMountain              WV    Summers        Bt     2        1872     0.98     ---    1.11   36
20  KeeneyKnob                    WV    Summers        Bt     2         327    -1.50     ---   19.01   36
21  Pipestem                      WV    Summers        PF     1         135    -0.16    1.00   36.10   32
22  Tempa                         WV    Summers        Bt     1        1539     0.94     ---    0.66   36

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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