BIOLOGY AND MANAGEMENT OF FALL ARMYWORM, Spodoptera frugiperda (J. E. SMITH) (LEPIDOPTERA: NOCTUIDAE) IN MAIZE
| dc.contributor.advisor | PRAMOD KATTI | |
| dc.contributor.author | SAHANA M | |
| dc.date.accessioned | 2023-12-27T14:05:18Z | |
| dc.date.available | 2023-12-27T14:05:18Z | |
| dc.date.issued | 2023-12-27 | |
| dc.description.abstract | The investigations on biology and management of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) were carried out at Main Agricultural Research Station (MARS), UAS Raichur, Karnataka during 2019-2020. Results on the biology of fall armyworm, S. frugiperda revealed that it has taken 2.18 and 16.50 days for egg and larva, 7.50 and 9.04 (male and female) days for pupa, and 7.43 and 9.52 (male and female) days for adult on maize. It has taken 2.32 and 18.85 days for egg and larva, 6.71 and 8.31 (male and female) days for pupa, and 6.38 and 8.14 (male and female) days for adult on sorghum. It has completed its life cycle in 35.40 and 39.16 days on maize and 37.21 and 40.23 days on sorghum for male and female, respectively. Morphometric observations and weight of different stages recorded on sorghum were less when compared to maize. Longer developmental times, less fecundity, lower morphometrics (head capsule length and width, body length and width), lower pupal weights and higher mortality when reared on sorghum suggested that sorghum does not offer sufficient nutritional quality required for maximum growth and development of fall armyworm larvae. In the management study, the data for two seasons (Kharif and Rabi) showed that at three and five days after two sprays, fall armyworm larval density and per cent leaf damage was significantly lower among treatments viz., spinetoram 11.7 SC, chlorantraniliprole 18.5 SC and emamectin benzoate 5 SG compared with the control. Besides, under both the seasons, the above compounds delivered good protection against the fall armyworm infestation and that resulted in significant yield. Further, the cost economics also showed that they were economically viable insecticides. Biopesticides such as Metarhizium rileyi, SfNPV and Bacillus thuringiensis var. kurstaki were found to be the best treatments in reducing the larval population and per cent leaf damage compared to untreated control at five and seven days after two sprays during both the seasons. The yield and cost economics also showed they were economically viable biopesticides. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810204628 | |
| dc.language.iso | English | |
| dc.pages | 146 | |
| dc.research.problem | BIOLOGY AND MANAGEMENT OF FALL ARMYWORM, Spodoptera frugiperda (J. E. SMITH) (LEPIDOPTERA: NOCTUIDAE) IN MAIZE | |
| dc.sub | Agricultural Entomology | |
| dc.theme | BIOLOGY AND MANAGEMENT OF FALL ARMYWORM, Spodoptera frugiperda (J. E. SMITH) (LEPIDOPTERA: NOCTUIDAE) IN MAIZE | |
| dc.these.type | M.Sc | |
| dc.title | BIOLOGY AND MANAGEMENT OF FALL ARMYWORM, Spodoptera frugiperda (J. E. SMITH) (LEPIDOPTERA: NOCTUIDAE) IN MAIZE | |
| dc.type | Thesis |