“Studies on biology and severity of Bactrocera scutellaris on cucumber in the low hills of Himachal Pradesh”

Simple item page
dc.contributor.advisorRana, V K
dc.contributor.authorKumar, Mukesh
dc.date.accessioned2023-03-17T05:40:17Z
dc.date.available2023-03-17T05:40:17Z
dc.date.issued2021-11-24
dc.description.abstractThe present investigations entitiled “Studies on biology and severity of Bactrocera scutellaris on cucumber in the low hills of Himachal Pradesh” The length and breadth of eggs ranged from 0.95 to 1.25 mm with an average of 1.03 ± 0.02 and 0.20 to 0.35 mm with an average of 0.29 ± 0.01 mm, respectively. The incubation period of eggs were varied from 0.70 to 1 day long with an average of 0.84 ± 0.03 days. The length of first, second and third instar larvae were 1.20 - 1.98 mm (1.59 ± 0.09 mm), 4.50 - 7.75 mm, (6.31 ± 0.27 mm) and 7.25 to 10.75 mm (8.98 ± 0.31 mm) whereas the width was 0.15 to 0.4 mm (0.27 ± 0.02 mm), 0.90 to 1.40 mm (1.25 ± 0.05 mm), 1.25 to 2.80 mm (2.10 ± 0.15 mm). The duration of respective instars were 1.15 ± 0.09, 1.6 ± 0.10 and 3.5 ± 0.12 days. The average larval period was 7.05 ± 0.25 days, with range of 6 to 8 days. The pupa measured 5.97 ± 0.13 mm in length and 2.34 ± 0.03 mm in width. The pupal stage lasted anywhere from 7 to 9 days, with an average of 7.8 ± 0.34 days. The pupa measured 5.97 ± 0.13 mm in length and 2.34 ± 0.03 mm in width. The pupal stage lasted anywhere from 7 to 9 days, with an average of 7.8 ± 0.34 days. The pre- oviposition, oviposition and post oviposition period were 11.52 ± 0.51, 7.05 ± 0.41 and 4.47 ± 0.50 days. The sex ratio was 1.18 ± 0.06 (male: female). The total life cycle ranged from 13 to 19 days with an average duration of 15.5 ± 1.07 days. The mean fruit infestation was positively and significantly correlated with average maximum temperature (0.9261) and negatively significantly correlated with minimum average temperature (-0.1016), while rainfall was negatively and non-significantly correlated (-0.3763) with mean fruit infestation of fruit fly and average relative humidity was negatively and significantly correlated (-0.0573), with mean fruit infestation of fruit fly. Mean fruit infestation severity was positively and significantly correlated with average maximum temperature (0.8270) and average maximum temperature, was positively and non- significantly correlated with minimum average temperature (0.1260). Rainfall was negatively and non- significantly correlated (-0.1922) with Mean fruit infestation severity of fruit fly and average relative humidity was positively and significantly correlated (0.6260) while minimum relative humidity was positively and significantly correlated (0.1583) with mean fruit infestation severity of fruit fly.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810195334
dc.keywordsBactrocera scutellaris, cucumber, Fruit fly infestationen_US
dc.language.isoEnglishen_US
dc.pages48en_US
dc.publisherCollege of Horticulture and Forestry Neri, Hamirpur (H.P.)en_US
dc.subEntomologyen_US
dc.themeBiology and severity of Bactrocera scutellaris on cucumberen_US
dc.these.typeM.Scen_US
dc.title“Studies on biology and severity of Bactrocera scutellaris on cucumber in the low hills of Himachal Pradesh”en_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Mukesh_Kumar__NH-2019-10-M_.pdf
Size:
1.59 MB
Format:
Adobe Portable Document Format
Description:
Mukesh Kumar ; Virender Kumar Rana
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Theses