Studies on present status of white grub, holotrichia serrata (fabricious) (coleoptera; scarabaeidae) in Belagavi District and its management
| dc.contributor.advisor | R. R. Patil | |
| dc.contributor.author | P. S. Tippannavar | |
| dc.date.accessioned | 2016-07-27T09:57:16Z | |
| dc.date.available | 2016-07-27T09:57:16Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | Studies carried out in Belagavi district of Karnataka during 2011 and 2012 on species composition, population dynamics, behaviorual pattern of adult white grub, loss estimation, both laboratory and field evaluation of entomopathogens and newer chemical insecticides revealed that Holotrichia serrata and Holotrichia fissa were the dominant species in irrigated and rain fed ecosystem respectively. Adult emergence of H. serrata commenced from 7th Meteorological Standard Week (MSW) (February) and continued upto 18th MSW (May), whereas in rainfed ecosystem adult emergence of H. fissa was recorded from 14th MSW (April) and continued upto 22 MSW (May). Adult trapping with various sources indicated that neem (Azadirichta indica) was the best source to trap the adults of H. serrata. Studies on host range indicated the spread of white grub population from sugarcane to other crops namely, groundnut, soybean, maize, paddy, turmeric and vegetables under kharif and wheat, sorghum and bengalgram under rabi conditions. Fungal pathogens evaluated under laboratory conditions against second instar H. serrata grub revealed that the combination of Metarhizium anisopliae and Beauuveria bassiana @ 4x109 conidia/g was most effective but on par with M. anisopliae and B. bassiana alone @ 4x109 conidia/g. Similar to laboratory conditions field evaluation of fungal pathogens for two years (2011-2012) revealed that higher dosages of fungal pathogens @ 25 kg/ha and FYM @ 125 kg/ha were more effective in reducing grub population significantly. Field evaluation of novel insecticide revealed that significant superiority of imidacloprid + fipronil 80 WG @ 1000 g/ha and on par with rynaxypyr 4G @ 20 kg/ha, lambda cylohothrin 5 EC @1500 ml/ha and imidacloprid 17.8 SL @1000 ml/ha were found superior to other insecticides by recording higher larval mortality. Among the five sugarcane genotypes screened both under protected (M. anisoplieae) and unprotected conditions against H. serrata grub. CoM 265 variety emerged as tolerant followed by CoSnk 03632. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/69996 | |
| dc.publisher | UAS Dharwad | en_US |
| dc.sub | Agricultural Entomology | |
| dc.these.type | Ph.D | |
| dc.title | Studies on present status of white grub, holotrichia serrata (fabricious) (coleoptera; scarabaeidae) in Belagavi District and its management | en_US |
| dc.type | Thesis | en_US |