Evaluation of Treatments in 2012 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  Ruffin                        NC    Caswell        MD     15g      1639      ---     ---     ---   12
 2  Alton                         VA    Halifax        MD     6g        334      ---     ---     ---   78
 3  Anawalt-VA                    VA    Tazewell       MD     6g      50084      ---     ---     ---   -1
 4  Bradshaw-VA                   VA    Buchanan       MD     6g       2648      ---     ---     ---   2
 5  Broadford_A                   VA    Tazewell       MD     6g       2999      ---     ---     ---   31
 6  Broadford_B                   VA    Tazewell       MD     6g       6340      ---     ---     ---   100
 7  Danville                      VA    Pittsylvania   MD     6g        606      ---     ---     ---   35
 8  Hutchinson Rock               VA    Tazewell       MD     15g      3009      ---     ---     ---   101
 9  Mount Hermon                  VA    Pittsylvania   MD     15g      1283      ---     ---     ---   35
10  Nebo                          VA    Smyth          MD     6g       1537      ---     ---     ---   45
11  Saltville                     VA    Russell        MD     15g     22818      ---     ---     ---   62
12  Anawalt-WV                    WV    McDowell       MD     6g      38384      ---     ---     ---   -1
13  Bradshaw                      WV    McDowell       MD     6g       2059      ---     ---     ---   2

Blocks outside of STS action zone

 #  Block Name                    State County         Agent  Dose    Area,ac    T      T2       C    PPA 
14  GHA 1                         VA    Rockbridge     MD     6g        123      ---     ---     ---   119
15  GHA 2                         VA    Rockbridge     MD     6g        123      ---     ---     ---   120
16  PGA 1                         VA    Rockbridge     MD     6g        128      ---     ---     ---   122
17  Parkway Flakes 1              VA    Patrick        MD     15g      1568     1.00     ---    0.00   30
18  Parkway Flakes 2              VA    Floyd          MD     15g      2994     1.00     ---    0.00   30
19  Parkway SPLAT                 VA    Patrick        MD     15g     11844     1.00     ---    0.00   30
20  RAR                           VA    Augusta        MD     6g        128      ---     ---     ---   121

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;

Back to the STS Decision-Support system

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