Management of insect pests of potato with some novel insecticides
| dc.contributor.advisor | Srivastava, R.M. | |
| dc.contributor.author | Rana, Anil | |
| dc.date.accessioned | 2019-09-16T11:06:14Z | |
| dc.date.available | 2019-09-16T11:06:14Z | |
| dc.date.issued | 2019-08 | |
| dc.description.abstract | Present study entitled "Management of insect pests of potato with some novel insecticides” was conducted at Vegetable Research Center, G.B. Pant University of Agriculture and Technology, Pantnagar in Tarai region of Uttarakhand during the year 2018-19. During the course of study, the major insect pests observed attacking potato variety Kufri Surya were green peach aphid (Myzus persicae Sulzer), thrips (Thrips palmi Kamy), leaf hopper, (Empoasca devastans) and whitefly (Bemisia tabaci Genn.). The peak activity of green peach aphid (12.13 per plant) was observed during fourth week of November. In case of leaf hopper, peak activity was recorded 5.43 per plant,during third week of January, whereas, peak activity of whitefly(15.46) was recorded during second week of December and peak activity of thrips (18.80)was recorded during third week of December. Correlation studies were worked out between the population of predators and that of sucking pests. There was a positive correlation between aphid and ladybird beetle, thrips and lady bird beetle, leaf hopper and lady bird beetle with “r” value of 0.94, 0.86 and 0.79, respectively at 5 percent level of significance. Comparative studies of two chemicals were conducted for their efficacy against major insect pests of potato, of these, flonicamid 50 WG @ 3gm /10 lits with repeat 15 days after 1st spray was found as the more effective than imidacloprid insecticides against aphids (Myzus persicae), whitefly (Bemesia tabaci), jassid (Empoasca devastans)and thrips (Thrips palmi)followed by other treatments. After perusing the yield data it was observed that potato tuber yield was maximum (41 t/ha) in flonicamid 50 WG @ 3g / 10 lits + repeat at 15 days with 34.41 percent increase over control. While studying the Bioefficacy of various insecticide it has been observed that seed treatment with imidacloprid (200 SL) @ 0.04% followed by foliar Spray of imidacloprid @60 g a.i. /ha at 85% emergence and repeated second spray with thiamethoxam 25 WG @ 100g a.i. /ha was most effective against potato insect pest like aphid (Myzus persicae), whitefly (Bemesia tabaci), jassid (Empoasca devastans) and thrips (Thrips palmi) followed by diafenthiuron as compared to other treatments castor oil could not manage the insect pests. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810128428 | |
| dc.keywords | insect pests, potatoes, insecticides | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 140 | en_US |
| dc.publisher | G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand) | en_US |
| dc.research.problem | Potatoes | en_US |
| dc.sub | Entomology | en_US |
| dc.subject | null | en_US |
| dc.theme | Insect Pests | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Management of insect pests of potato with some novel insecticides | en_US |
| dc.type | Thesis | en_US |