Evaluation of Treatments in 2000 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  Edenton Block                 NC    Chowan         PF     15G       800     1.00    0.92    0.02   251
 2  Peachtree                     NC    Clay           PF     30G      1053      ---     ---    2.62   -1
 3  Grassy Creek                  NC    Jackson        PF     30G      1001      ---     ---    3.34   -1
 4  Sugar Hill                    NC    McDowell       PF     30G      1572     0.47    0.79    1.22   107
 5  Boykins Block                 NC    Northampton    PF     15G       798    -0.46    0.99    9.19   244
 6  Adams Grove                   VA    Greensville    BT     24BIU/A  3551     0.83     ---   21.60   240
 7  Milton                        VA    Halifax        PF     15G       989     1.00    0.96    0.16   222
 8  Blairs                        VA    Pittsylvania   PF     30G      1798     1.00    0.93    0.06   216
 9  Callands                      VA    Pittsylvania   PF     30G       915     0.95    0.96    0.21   212
10  Kentuck                       VA    Pittsylvania   PF     30G      2007     1.00    0.80    0.01   220
11  Laniers Mill                  VA    Pittsylvania   PF     15G      1236     0.99    0.98    0.36   213
12  Leesville Lake                VA    Pittsylvania   PF     15G      1681     0.99    0.88    0.17   209
13  Mt. Cross                     VA    Pittsylvania   PF     15G      1390     0.98    1.00    1.09   213
14  Sandy Level                   VA    Pittsylvania   BT     24BIU/A  1780     0.99     ---    1.23   205
15  Whitmell                      VA    Pittsylvania   PF     30G      1298     0.99    0.86    0.10   210
16  Rainelle                      WV    Fayette        BT     24BIU/A  9286     0.98     ---    0.11   150
17  Buck Knob                     WV    Greenbrier     BT     24BIU/A  1114     0.92     ---    0.45   156
18  Lerona                        WV    Mercer         PF     15G      1115     0.98    0.96    0.15   148

Blocks outside of STS action zone

 #  Block Name                    State County         Agent  Dose    Area,ac    T      T2       C    PPA 
19  Quinwood                      WV    Greenbrier     BT     24BIU/A  7015     0.94     ---    0.14   160

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