Studies on major sucking insect pests of pigeon pea in northern dry zone of Karnataka
| dc.contributor.advisor | A. P. Biradar | |
| dc.contributor.author | Lingaraju G. H. | |
| dc.date.accessioned | 2017-03-06T18:52:06Z | |
| dc.date.available | 2017-03-06T18:52:06Z | |
| dc.description.abstract | Studies on major sucking insect pests of pigeon pea in northern dry zone of Karnataka were carried out at RARS, Agriculture College, Bijapur during 2013-14. Seasonal incidence studies indicated that, sucking insect pests population like leaf hopper, thrips and pod bugs were very low during seedling stage and gradually increased during vegetative stage of the crop and reached a peak occurrence during reproductive stage. Natural enemies like coccinellid beetles, green lace wing and spiders were noticed in maximum number at reproductive stage of the crop. Among bio-physical and bio-chemical parameters of different pigeon pea genotypes, the lowest number of leaf trichomes, maximum leaf thickness and chlorophyll, total sugar, reducing sugar and protein content were recorded in ICP-87, while the lowest were recorded in TS-3R. Phenol content which imparts resistance against pests was higher in TS-3R and lower in ICP-87. Higher grain yield was recorded in TS-3R was followed by ICP-8863, Gulyal and ICP-87 genotypes. Management of sucking insect pests of pigeon pea indicated that, nimbicidine @ 5ml/l, NSKE 5% and biodigester solution @ 1:3 were moderately effective among bio-rationals. While, fipronil 5 SC @ 0.2ml/l followed by thiamethoxam 25 WG @ 0.2g/l and imidacloprid 17.8 SL @ 0.3ml/l were found significantly superior over all other treatments against leaf hopper, thrips and pod bugs among chemical treatments. Highest populations of natural enemies were noticed in biodigester solution and untreated control treatments. Minimum population of natural enemies was noticed in thiamethoxam 25 WG, imidacloprid 17.8 SL and fipronil 5 SC treatments. Higher grain yield and benefit cost ratio were recorded in fipronil 5 SC, thiamethoxam 25 WG and imidacloprid 17.8 SL treatments and were followed by biorational treatments. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810004201 | |
| dc.language.iso | en | en_US |
| dc.publisher | UASD | en_US |
| dc.sub | Agricultural Entomology | en_US |
| dc.subject | null | en_US |
| dc.theme | Studies on major sucking insect pests of pigeon pea in northern dry zone of Karnataka | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Studies on major sucking insect pests of pigeon pea in northern dry zone of Karnataka | en_US |
| dc.type | Thesis | en_US |