Table 2.
Toxicity of some organophosphates and synthetic pyrethroids insecticides against different populations of Spodoptera litura from Hunan, China
| Insecticides | Location | Collected from | Collection data | Dose range (mg/l) | LC50 (mg/l) (95 % FL) | RR | Fit of probit line | n | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Slope (±SE) | χ 2 | df | ||||||||
| Chlorpyrifos | Changsha | Taro | Sep-10 | 20–240 | 82.13 (42.37–120.23) | 19.7 | 1.44 ± 0.32 | 1.26 | 4 | 240 |
| Cotton | Sep-11 | 25–300 | 103.37 (88.29–116.45) | 24.7 | 1.61 ± 0.28 | 4.00 | 4 | 240 | ||
| Cotton | Oct-12 | 25–320 | 91.71 (46.37–137.02) | 21.9 | 1.53 ± 0.22 | 1.76 | 4 | 240 | ||
| Yueyang | Lotus | Sep-10 | 75–800 | 307.06 (162.12–450.38) | 73.5 | 1.26 ± 0.47 | 0.57 | 4 | 240 | |
| Cotton | Aug-11 | 50–600 | 210.92 (138.38–292.37) | 50.5 | 1.63 ± 0.24 | 0.39 | 4 | 240 | ||
| Lotus | July-12 | 65–800 | 262.55 (216.77–306.86) | 62.8 | 1.72 ± 0.34 | 0.82 | 4 | 240 | ||
| Changde | Soybean | Aug-10 | 12–200 | 56.51 (30.27–82.76) | 13.5 | 1.26 ± 0.17 | 1.14 | 4 | 240 | |
| Cotton | Aug-11 | 30–480 | 176.81 (90.12–263.11) | 42.3 | 0.67 ± 0.24 | 0.65 | 4 | 240 | ||
| Cotton | Oct-12 | 35–560 | 198.13 (95.4–296.86) | 47.4 | 1.19 ± 0.21 | 2.74 | 4 | 240 | ||
| Yiyang | Soybean | Oct-10 | 50–800 | 230.32 (140.12–320.24) | 55.1 | 1.31 ± 0.24 | 0.38 | 4 | 240 | |
| Cotton | July-11 | 50–600 | 216.19 (110.12–322.23) | 51.7 | 1.73 ± 0.25 | 0.41 | 4 | 240 | ||
| Cotton | Aug-12 | 100–1000 | 502.60 (366.65–636.17) | 120 | 1.21 ± 0.61 | 0.26 | 4 | 240 | ||
| Chenzhou | Cotton | Oct-11 | 75–800 | 335.36 (263.47–405.36) | 80.2 | 1.38 ± 0.25 | 0.38 | 4 | 240 | |
| Sweet potato | Sep-12 | 75–800 | 285.62 (202.12–369.34) | 68.3 | 1.14 ± 0.29 | 0.81 | 4 | 240 | ||
| Profenofos | Changsha | Taro | Sep-10 | 25–300 | 90.6 (61.20–119.37) | 24.2 | 1.48 ± 0.25 | 0.59 | 4 | 240 |
| Cotton | Sep-11 | 50–600 | 215.55 (153.75–275.55) | 57.5 | 1.73 ± 0.29 | 3.04 | 4 | 240 | ||
| Cotton | Oct-12 | 60–900 | 276.86 (157.84–397.35) | 73.8 | 1.67 ± 0.43 | 0.058 | 4 | 240 | ||
| Yueyang | Lotus | Sep-10 | 60–800 | 248.36 (142.33–354.68) | 66.2 | 1.46 ± 0.36 | 0.68 | 4 | 240 | |
| Cotton | Aug-11 | 75–900 | 392.81 (260.12–527.25) | 105 | 2.01 ± 0.39 | 0.73 | 4 | 240 | ||
| Lotus | July-12 | 75–900 | 323.89 (200.23–446.68) | 86.4 | 0.82 ± 0.26 | 0.38 | 4 | 240 | ||
| Changde | Soybean | Aug-10 | 70–1120 | 280.8 (176.59–384.58) | 74.9 | 0.75 ± 0.27 | 1.59 | 4 | 240 | |
| Cotton | Aug-11 | 80–1280 | 358.2 (213.47–500.96) | 95.5 | 1.25 ± 0.17 | 1.34 | 4 | 240 | ||
| Cotton | Oct-12 | 150–2400 | 859.91 (644.87–1072.96) | 229 | 1.90 ± 0.40 | 1.47 | 4 | 240 | ||
| Yiyang | Soybean | Oct-10 | 35–560 | 175.31 (112.13–237.43) | 46.8 | 1.71 ± 0.14 | 0.29 | 4 | 240 | |
| Cotton | July-11 | 45–720 | 198.15 (120.17–276.13) | 52.8 | 0.92 ± 0.36 | 1.53 | 4 | 240 | ||
| Cotton | Aug-12 | 35–560 | 127.31 (64.50–192.13) | 34.0 | 1.80 ± 0.27 | 0.81 | 4 | 240 | ||
| Chenzhou | Cotton | Oct-11 | 120–2000 | 462.98 (368.93–557.02) | 123 | 1.57 ± 0.22 | 2.16 | 4 | 240 | |
| Sweet potato | Sep-12 | 150–2400 | 631.65 (308.23–955.12) | 168 | 1.84 ± 0.32 | 0.66 | 4 | 240 | ||
| Thiodicarb | Changsha | Taro | Sep-10 | 62.5–1000 | 247.56 (140.21–354.63) | 38.6 | 1.31 ± 0.23 | 1.69 | 4 | 240 |
| Cotton | Sep-11 | 375–6000 | 1762.87 (825.35–2769.39) | 275 | 2.08 ± 0.39 | 0.80 | 4 | 240 | ||
| Cotton | Oct-12 | 375–6000 | 1657.13 (1210.28–2101.22) | 258 | 2.02 ± 0.27 | 0.77 | 4 | 240 | ||
| Yueyang | Lotus | Sep-10 | 175–2800 | 734.38 (410.35–1057.44) | 114 | 1.34 ± 0.15 | 1.83 | 3 | 240 | |
| Cotton | Aug-11 | 125–2000 | 541.01 (253.83–826.20) | 84.3 | 2.05 ± 0.24 | 0.17 | 4 | 240 | ||
| Lotus | July-12 | 200–3200 | 824.20 (623.18–1024.38) | 128 | 2.11 ± 0.36 | 3.82 | 4 | 240 | ||
| Changde | Soybean | Aug-10 | 250–4000 | 1177.88 (732.16–1613.59) | 183 | 2.60 ± 0.30 | 2.78 | 4 | 240 | |
| Cotton | Aug-11 | 375–6000 | 1486.62 (731.92–2239.31) | 232 | 1.53 ± 0.25 | 3.30 | 4 | 240 | ||
| Cotton | Oct-12 | 375–6000 | 1620.02 (1010.33–2228.56) | 252 | 1.71 ± 0.24 | 0.79 | 4 | 240 | ||
| Yiyang | Soybean | Oct-10 | 350–5600 | 1404.18 (932.11–1873.25) | 219 | 0.89 ± 0.26 | 0.60 | 4 | 240 | |
| Cotton | July-11 | 450–7200 | 1786.94 (976.83–2583.06) | 278 | 1.31 ± 0.24 | 1.98 | 4 | 240 | ||
| Cotton | Aug-12 | 625–10000 | 2725.87 (1214.17–4237.57) | 425 | 2.47 ± 0.48 | 1.27 | 4 | 240 | ||
| Chenzhou | Cotton | Oct-11 | 175–2800 | 707.81 (342.37–1071.25) | 110 | 1.78 ± 0.36 | 0.84 | 4 | 240 | |
| Sweet potato | Sep-12 | 225–3600 | 952.54 (500.52–1406.13) | 148 | 1.51 ± 0.66 | 2.45 | 4 | 240 | ||
| Methomyl | Changsha | Taro | Sep-10 | 15–240 | 59.84 (34.17–85.51) | 46.8 | 2.14 ± 0.24 | 0.99 | 4 | 240 |
| Cotton | Sep-11 | 150–2400 | 624.41 (420.24–826.33) | 488 | 1.47 ± 0.55 | 0.39 | 4 | 240 | ||
| Cotton | Oct-12 | 200–3200 | 786.21 (317.26–1254.25) | 614 | 1.37 ± 0.36 | 1.34 | 4 | 240 | ||
| Yueyang | Lotus | Sep-10 | 30–480 | 118.23 (72.35–164.12) | 92.4 | 1.81 ± 0.18 | 0.76 | 4 | 240 | |
| Cotton | Aug-11 | 70–1120 | 285.93 (180.72–389.93) | 223 | 1.84 ± 0.19 | 1.50 | 4 | 240 | ||
| Lotus | July-12 | 62.5–1000 | 247.26 (124.38–489.75) | 193 | 1.63 ± 0.28 | 0.28 | 4 | 240 | ||
| Changde | Soybean | Aug-10 | 50–800 | 215.76 (145.58–285.27) | 169 | 2.01 ± 0.25 | 1.16 | 4 | 240 | |
| Cotton | Aug-11 | 87.5–1400 | 350.95 (240.37–460.57) | 274 | 2.22 ± 0.21 | 0.73 | 4 | 240 | ||
| Cotton | Oct-12 | 100–1600 | 400.96 (318.37–504.74) | 313 | 2.26 ± 0.51 | 1.18 | 4 | 240 | ||
| Yiyang | Soybean | Oct-10 | 125–2000 | 469.44 (280.17–658.71) | 367 | 2.15 ± 0.60 | 1.57 | 4 | 240 | |
| Cotton | July-11 | 250–3000 | 1055.53 (738.74–1372.32) | 825 | 1.73 ± 0.18 | 0.18 | 4 | 240 | ||
| Cotton | Aug-12 | 325–4000 | 1368.59 (628.31–2107.71) | 1,069 | 2.23 ± 0.53 | 2.60 | 4 | 240 | ||
| Chenzhou | Cotton | Oct-11 | 20–320 | 87.40 (72.30–100.49) | 68.3 | 1.94 ± 0.24 | 0.80 | 4 | 240 | |
| Sweet potato | Sep-12 | 12.5–200 | 47.97 (23.25–72.70) | 37.5 | 2.02 ± 0.45 | 0.74 | 4 | 240 | ||
| Deltamethrin | Changsha | Taro | Sep-10 | 25–400 | 131.15 (93.57–168.73) | 32.9 | 1.59 ± 0.18 | 0.42 | 4 | 240 |
| Cotton | Sep-11 | 112.5–1800 | 460.96 (300.26–620.87) | 116 | 1.88 ± 0.21 | 1.33 | 4 | 240 | ||
| Cotton | Oct-12 | 37.5–2200 | 562.91 (304.55–1040.43) | 141 | 1.53 ± 0.35 | 0.21 | 4 | 240 | ||
| Yueyang | Lotus | Sep-10 | 17.5–280 | 67.46 (43.53–90.60) | 16.9 | 1.80 ± 0.37 | 0.20 | 4 | 240 | |
| Cotton | Aug-11 | 25–400 | 142.12 (92.70–190.56) | 35.6 | 1.57 ± 0.15 | 0.49 | 4 | 240 | ||
| Lotus | July-12 | 30–480 | 113.24 (72.13–154.34) | 28.4 | 0.92 ± 0.28 | 1.41 | 4 | 240 | ||
| Changde | Soybean | Aug-10 | 37.5–600 | 156.21 (97.34–215.08) | 39.2 | 1.91 ± 0.45 | 1.59 | 4 | 240 | |
| Cotton | Aug-11 | 87.5–1400 | 367.60 (220.38–512.82) | 92.1 | 0.82 ± 0.13 | 1.08 | 4 | 240 | ||
| Cotton | Oct-12 | 150–2400 | 622.74 (329.41–1177.26) | 156 | 1.68 ± 0.32 | 0.83 | 4 | 240 | ||
| Yiyang | Soybean | Oct-10 | 17.5–280 | 69.35 (40.37–98.32) | 17.4 | 1.13 ± 0.12 | 1.14 | 4 | 240 | |
| Cotton | July-11 | 75–1200 | 333.05 (212.57–453.52) | 83.5 | 0.92 ± 0.24 | 0.95 | 4 | 240 | ||
| Cotton | Aug-12 | 175–2800 | 693.52 (315.79–1523.06) | 174 | 1.38 ± 0.25 | 1.61 | 4 | 240 | ||
| Chenzhou | Cotton | Oct-11 | 35–560 | 137.58 (76.39–197.46) | 34.5 | 1.57 ± 0.15 | 1.23 | 4 | 240 | |
| Sweet potato | Sep-12 | 75–1200 | 329.73 (152.63–505.77) | 82.6 | 1.47 ± 0.42 | 0.62 | 4 | 240 | ||
| Bifenthrin | Changsha | Taro | Sep-10 | 2.5–-30 | 8.80 (7.23–10.38) | 17.3 | 1.55 ± 0.25 | 3.32 | 4 | 240 |
| Cotton | Sep-11 | 22.5–320 | 89.80 (71.85–107.74) | 176 | 1.66 ± 0.46 | 1.98 | 4 | 240 | ||
| Cotton | Oct-12 | 25–400 | 116.02 (57.80–175.21) | 227 | 1.73 ± 0.26 | 0.56 | 4 | 240 | ||
| Yueyang | Lotus | Sep-10 | 2–32 | 7.61 (6.25–8.98) | 14.9 | 1.13 ± 0.29 | 0.60 | 4 | 240 | |
| Cotton | Aug-11 | 7.5–120 | 29.82 (20.36–39.29) | 58.5 | 2.33 ± 0.31 | 3.57 | 4 | 240 | ||
| Lotus | July-12 | 10–160 | 35.70 (19.82–64.30) | 70.0 | 1.85 ± 0.22 | 0.49 | 4 | 240 | ||
| Changde | Soybean | Aug-10 | 1.5–24 | 6.28 (4.30–8.26) | 12.3 | 1.99 ± 0.19 | 2.88 | 4 | 240 | |
| Cotton | Aug-11 | 7.5–120 | 32.23 (21.14–43.32) | 63.2 | 1.39 ± 0.26 | 1.08 | 4 | 240 | ||
| Cotton | Oct-12 | 7.5–120 | 28.46 (16.75–48.35) | 55.8 | 3.43 ± 0.38 | 0.39 | 4 | 240 | ||
| Yiyang | Soybean | Oct-10 | 5–80 | 22.88 (16.59–29.17) | 44.9 | 2.04 ± 0.20 | 1.36 | 4 | 240 | |
| Cotton | July-11 | 5–80 | 19.17 (12.32–26.01) | 37.6 | 1.73 ± 0.18 | 0.92 | 4 | 240 | ||
| Cotton | Aug-12 | 17.5–280 | 71.80 (42.80–120.45) | 141 | 2.03 ± 0.37 | 0.56 | 4 | 240 | ||
| Chenzhou | Cotton | Oct-11 | 12.5–200 | 49.24 (34.69–63.79) | 96.6 | 2.00 ± 0.29 | 1.76 | 4 | 240 | |
| Sweet potato | Sep-12 | 15–240 | 62.40 (30.35–94.45) | 122 | 1.76 ± 0.42 | 0.44 | 4 | 240 | ||
RR resistance ratio, calculated as LC50 of field/LC50 of Lab-BJ, n number of larvae used in bioassay, including controls, χ 2 values were not significant for all the assays