A note on pesticide induced resurgence of two spotted spider mite, Tetranychus urticae (Acari: Tetranychidae) on grape
Author
Patil, Chandragouda
. Department of Agricultural Entomology, College of Agriculture, Vijayapur- 586 101, University of Agricultural Sciences, Dharwad- 580005, Karnataka, India; E-mails: patilmchandru @ gmail. com, ssudikeri @ gmail. com, sskarbu @ gmail. com
Author
Udikeri, Shashikant S.
. Department of Agricultural Entomology, College of Agriculture, Vijayapur- 586 101, University of Agricultural Sciences, Dharwad- 580005, Karnataka, India; E-mails: patilmchandru @ gmail. com, ssudikeri @ gmail. com, sskarbu @ gmail. com &. Present address: Agricultural Research Station, Dharwad Farm, Dharwad. PIN 580007, Karnataka: India
Author
Karabhantanal, Shreeshail S.
. Department of Agricultural Entomology, College of Agriculture, Vijayapur- 586 101, University of Agricultural Sciences, Dharwad- 580005, Karnataka, India; E-mails: patilmchandru @ gmail. com, ssudikeri @ gmail. com, sskarbu @ gmail. com
text
Persian Journal of Acarology
2018
2018-01-15
7
1
75
84
journal article
10.22073/pja.v7i1.27987
2251-8169
7173709
Table 3. Changes in Tetranychus urticae Koch population due to pesticides usage in grape (after 2 nd spray).| Pesticides | PTC | * Number of mites/square 2.5 cm 1 10 15 DAS DAS DAS | C.M | Percent Increase/ Decrease over over C.M UTC |
|---|
| Dicofol | 28.33 (5.42) | 21.33 (4.72) b | 17.00 (4.24) cde | 11.67 (3.55) d | 16.67 (4.20) d | – 41.18 | – 43.52 |
|---|
| Sulphur | 25.33 (5.07) | 22.67 (4.86) b | 28.00 (5.38) a | 31.00 (5.66) a | 27.22 (5.31) ab | + 7.46. | + 8.17 |
|---|
| Abamectin | 20.00 (4.58) | 11.67 (3.55) d | 5.33 (2.50)g | 3.33 (2.08) ef | 6.78 (2.78) f | – 66.10 | – 76.33 |
|---|
| Spiromesifen | 17.33 (4.25) | 12.67 (3.69) d | 5.67 (2.56) g | 3.00 (1.99) f | 7.11 (2.84) f | – 58.97 | – 75.49 |
|---|
| Monocrotophos | 24.33 (5.02) | 20.33 (4.60) bc | 14.33 (3.88) de | 16.33 (4.15) cd | 17.00 (4.23) d | – 30.14 | – 42.56 |
|---|
| Dichlorovos + Fish Oil Resin | 20.33 (4.58) | 17.67 (4.31) bc | 12.67 (3.61) ef | 14.67 (3.87) cd | 15.00 (3.95) d | – 26.23 | – 48.37 |
|---|
| Soap (FORS) |
|---|
| Buprofezin | 23.67 (4.95) | 23.00 (4.89) b | 25.33 (5.12) ab | 26.33 (5.22) ab | 24.89 (5.08) ab | + 5.15 | + 16.36 |
|---|
| Thiamethoxam | 22.00 (4.78) | 20.33 (4.62) bc | 24.33 (5.03) ab | 25.33 (5.13) ab | 23.33 (4.93) bc | + 6.04 | + 21.31 |
|---|
| Acetamiprid | 22.67 (4.86) | 22.00 (4.79) b | 24.67 (5.06) ab | 25.67 (5.16) ab | 24.11 (5.01) abc | + 6.35 | + 19.00 |
|---|
| Imidacloprid | 23.00 (4.88) | 22.00 (4.79) b | 25.00 (5.09) ab | 25.67 (5.16) ab | 24.22 (5.02) abc | + 5.30 | + 18.51 |
|---|
| Fipronil | 24.00 (4.94) | 20.00 (4.56) bc | 23.67 (4.96) abc | 24.67 (5.06) ab | 22.78 (4.87) bc | – 5.08 | + 23.27 |
|---|
| Methomyl | 23.67 (4.90) | 19.00 (4.46) bc | 18.33 (4.39) bcd | 20.33 (4.59) bc | 19.22 (4.49) cd | – 18.80 | + 35.07 |
|---|
| Dinocap | 21.33 (4.72) | 15.33 (4.04) cd | 8.67 (3.11) fg | 6.67 (2.77) e | 10.22 (3.35) e | – 52.08 | – 65.04 |
|---|
| Untreated control (water spray) | 28.67 (5.44) | 29.00 (5.48) a | 30.00 (5.57) a | 30.33 (5.60) a | 29.78 (5.55) a | + 3.88 | 0.00 |
|---|
| S.Em± | 0.32 | 0.19 | 0.24 | 0.24 | 0.18 | - | - |
|---|
| CV (%) | 11.32 | 6.71 | 8.40 | 7.84 | 6.11 | - | - |
|---|