Evaluation of Treatments in 1994 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  Rainelle                      WV    Greenbrier     DM     1         856     1.00     ---    0.02   38
 2  Beckley                       WV    Raleigh        PF     1         264     1.00    1.00    0.00   18
 3  MoncoveLake                   WV    Monroe         Bt     2        4666     0.58     ---    1.48   57
 4  Centennial                    WV    Monroe         PF     1        3015     0.57    0.65    1.03   57
 5  LaurelBranch                  WV    Monroe         PF     1        2525    -0.64    0.81    1.28   57
 6  Lindside                      WV    Monroe         Bt     1        7820     0.84     ---    3.32   46
 7  ForkRidge                     VA    Giles          GYP    2         455     0.42     ---    0.11   46
 8  MysteryRidge                  VA    Giles          Bt     2         725     0.59     ---   12.44   46
 9  Goldbond                      VA    Giles          Bt/DM  2        1029     0.96     ---    6.73   46
10  RockyGap                      VA    Giles          Bt     2         293     0.98     ---    0.02   -1
11  WhiteGate                     VA    Pulaski        Bt     2         800     0.99     ---    0.82   44
12  Hiwassee                      VA    Pulaski        Bt     2        4275     0.98     ---    0.72   49
13  FontaineCreek                 VA/NC Greensville    Bt     2        1667    -0.97     ---   15.41   129
14  MeherrinRiver                 VA/NC Southhampton   Bt     2        4840     0.67     ---    4.20   132
15  Darlington                    NC    Halifax        Bt     2        1491     1.00     ---    0.00   125

Blocks outside of STS action zone

 #  Block Name                    State County         Agent  Dose    Area,ac    T      T2       C    PPA 
16  Boykins                       NC    Northhampten   Bt     2        6322     0.88     ---    2.15   134

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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    For more information, please contact Patrick Tobin or Andy Roberts
    Maintained By Jiang Wu