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ThesisItem Open Access Comparative impact of insecticides on bacterial and acetylcholinesterase activity of Eisenia fetida (Savigny) and Pheretima posthuma (Kinberg)(CCSHAU, 2017) Yadav, Jyoti; Dharambir SinghThe present study was carried out to analyze the toxicity of chlorpyrifos and carbofuran on E. fetida and P. posthuma. Paper contact toxicity test was used to determine LC50. LC50 of chlorpyrifos against adult E. fetida and P. posthuma was 0.25% and 0.11%, respectively. While LC50 of carbofuran against adult E. fetida and P. posthuma was 5.14% and 4.11%, respectively that confirms the greater sensitivity of P. posthuma towards insecticide induced toxicity in comparison to E. fetida. Lower LC50 value of chlorpyrifos confirms its higher toxicity as compared with carbofuran. Total 52 bacterial isolates were isolated from the gut of worms, out of which six resistant gut bacterial species having agricultural importance were identified as Sphingobacterium sp., Citrobacter freundii, Citrobacter murliniae, Bacillus australimaris and Burkholderia paludis. Inhibition in AChE activity due to chlorpyrifos and carbofuran exposure was observed at 24h. While E. fetida exposed to carbofuran tried to maintain AChE level, which may be seen as strategy to cope up with toxicity after prolonged exposure.ThesisItem Open Access Determining the relative efficacy of vermicompost, FYM and chemical fertilizers on crop yield of some vegetable crops(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 2002) Kumar, Dinesh; Sihag, R. CThesisItem Open Access Studies on seasonal gonadal changes 1n common house rat, Rattus rattus Linnaeus(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 2002) Vir1nani, Shelly; Pasahan, S. CThesisItem Open Access ldcntification, isolation and characterization or immunodominant antigens of adult Haemonchus contortus (Nematoda : Trichostrongylidae)(Department of College of Basic Sciences and Entomology Punjab Agricultural University Ludhiana, 2002) Kaur, Kanwaljeet; Sood, M.LThesisItem Open Access Studies on the activities of insect-pollinators of cucurbit crops(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 2002) Kumar, Surender; Gahlawat, S. KThesisItem Open Access Studies on the nematophagy in acarine fauna and their feeding potential on seed gall nematode(College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2002) Rani, Ranjana; Gulati, RachnaThesisItem Open Access Studies on Pesticide lnduced Changes in Soil Acarine Fauna and the Nutrients in Poplar (Populus sp.) Plantation(College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2002) Neha; Jain, K.L.ThesisItem Open Access Shudies on the relative attractiveness of three concurrently flowering crops to the insect pollinators(College Of Basic Sciences And Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2000) Chaudhary, Neelam; Sihag, R. CThesisItem Open Access Population structure, dynamics and damage done by rodents in kinnow (Citrus sinensis) orchards of Haryana Agricultural University, Hisar(College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2000) Vats, Parveen Kumar; Sabhlok, V .P.