Table 2. Comparison of the commercial and measured concentrations.
Active substance | Commercial concentration | Measured concentration | Difference (%) | |
Mean | S.D. | |||
Abamectin | 18 g/L | 24.91 g/L | 1.27 g/L | +38.4 |
Acetamiprid | 200 g/kg | 243.66 g/kg | 6.14 g/kg | +21.8 |
Chlorpyrifos-ethyl | 480 g/L | 500.20 g/L | 0.02 g/L | +4.2 |
Clothianidin | 500 g/kg | 453.71 g/kg | 23.11 g/kg | −9.3 |
Cyfluthrin | 50 g/L | 46.45 g/L | 0.09 g/L | −7.1 |
Cypermethrin | 100 g/L | 114.25 g/L | 0.14 g/L | +14.2 |
Deltamethrin | 15 g/L | 14.77 g/L | 0.72 g/L | −1.5 |
Dimethoate | 400 g/L | 433.35 g/L | 0.92 g/L | +8.3 |
Esfenvalerate | 25 g/L | 25.10 g/L | 0.50 g/L | +0.4 |
Fenoxycarb | 250 g/kg | 228.54 g/kg | 14.49 g/kg | −8.6 |
Hexythiazox | 104 g/kg | 91.24 g/kg | 2.94 g/kg | −12.3 |
Imidacloprid | 200 g/L | 230.29 g/L | 12.24 g/L | +15.1 |
Iprodione | 750 g/kg | 794.34 g/kg | 7.01 g/kg | +5.9 |
Lambda-cyhalothrin | 50 g/kg | 44.85 g/kg | 2.47 g/kg | −10.3 |
Prochloraz | 461 g/kg | 391.69 g/kg | 13.72 g/kg | −15 |
Pyriproxyfen | 100 g/L | 97.29 g/L | 2.66 g/L | −2.7 |
Tau-fluvalinate | 240 g/L | 232.65 g/L | 12.80 g/L | −3.1 |
Tebuconazole | 250 g/kg | 186.30 g/kg | 10.32 g/kg | −25.5 |
Thiacloprid | 480 g/L | 448.97 g/L | 0.07 g/L | −6.5 |
Thiamethoxam | 10 g/L | 10.25 g/L | 0.16 g/L | +2.5 |
S.D.: Standard Deviation.
The concentrations of commercial products are expressed according to their nature, liquid or solid.
The quantification of the active substance was performed in triplicate from the phytopharmaceutical preparation used for the spray application.
The differences were expressed as percentages of the commercial concentrations.