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Table 2 Densities of Nesidiocoris tenuis nymphs and periods needed to control the entire population of Bemisia tabaci according to doses

From: Effect of the native strain of the predator Nesidiocoris tenuis Reuter and the entomopathogenic fungi Beauveria bassiana and Lecanicillium muscarium against Bemisia tabaci (Genn.) under greenhouse conditions in Tunisia

  

1 N. tenuis per plant

2 N. tenuis per plant

3 N. tenuis per plant

4 N. tenuis per plant

Efficacy of N. tenuis against B. tabaci nymphs

Linear equation

Y1= 43.43 X1 + 87.80

Y1 = 83.13 X1 + 51.71

Y1 = 7.78 X1+ 85.18

Y1 = 6.92 X1 + 83.09

Coefficient of determination

R2 = 0.7947

R2 = 0.8083

R2 = 0.7524

R2 = 0.7459

Density of N. tenuis reduces 100% of nymphs

0.28

0.58

1.9

2.44

Efficacy of N. tenuis against B. tabaci nymphs as a function of time

Linear equation

Y2 = 0.8543 X2+ 87.6

Y2 = 0.7875 X2 + 88.348

Y2 = 0.8702 X2 + 87.454

Y2 = 0.8638 X2 + 87.636

Coefficient of determination

R2 = 0.756

R2 = 0.7885

R2 = 0.6455

R2 = 0.853

Time required to reduce the B. tabaci population by 100% (Weeks)

14.51

14.79

14.41

14.31

  1. X1, X2, reduction of Bemisia tabaci; Y1, the population density of Nesidiocoris tenuis per leaf; Y2, time (week)