Evaluation of Treatments in 2006 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  Farquhar Peak                 MN    Cook           MD     6g       5536     0.96    0.88    0.17   35
 2  Kadunce River                 MN    Cook           MD     6g       1241     0.57   -0.77    0.40   32
 3  Mineral Center                MN    Cook           Btk    24BIUx2  2087     0.88     ---    0.40   35
 4  Schroeder Complex             MN    Cook           MD     6g      92536     0.95    0.18    0.19   2
 5  Tom Lake                      MN    Cook           MD     6g      36351     0.97    0.77    0.10   35

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