Evaluation of Treatments in 2009 in MN and IA

  
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  Castle Danger                 MN    Lake           MD     6g      45882     0.98    0.85    0.07   70
 2  Hart Township                 MN    Winona         MD     6g       1730     0.59    1.00    0.58   510
 3  Hovland                       MN    Cook           MD     6g      13232     1.00    0.99    0.03   509
 4  Kings Bluff                   MN    Winona         MD     6g      16124     0.92    0.81    0.15   68
 5  Oak Ridge                     MN    Houston        MD     6g      13916     0.94    0.48    0.10   57
 6  Split Rock Point              MN    Lake           MD     6g       9555     0.95    0.73    0.15   264
 7  Winona                        MN    Winona         MD     6g       5259     0.97    1.00    0.06   56

Blocks outside of STS action zone

 #  Block Name                    State County         Agent  Dose    Area,ac    T      T2       C    PPA 
 8  Alfred Creek                  MN    Cook           Btk    24BIUx2   374     0.87     ---    2.88   83
 9  Carlton Creek                 MN    Cook           Btk    24BIUx2   343     0.89     ---    1.08   83
10  Minnetonka                    MN    Hennepin       Btk    24BIUx2   303     0.89     ---    0.78   3
11  Onion River                   MN    Cook           MD     15g      1094     0.95    0.86    0.21   83
12  Richfield                     MN    Hennepin       Btk    24BIUx2   382     1.00     ---    0.00   4
13  Spruce Creek                  MN    Cook           MD     15g      1023     0.96    0.97    0.68   83

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