Population dynamics and varietal/germplasm screening against ber fruit fly, Carpomyia vesuviana (Costa) on ber
| dc.contributor.advisor | Ram Karan | |
| dc.contributor.author | Yadav, Jayant | |
| dc.date.accessioned | 2018-02-22T06:45:06Z | |
| dc.date.available | 2018-02-22T06:45:06Z | |
| dc.date.issued | 2017 | |
| dc.description.abstract | The present studies entitled “Population dynamics and varietal/germplasm screening against ber fruit fly, Carpomyia vesuviana (Costa) on ber.” were carried out during 2016-17 at ber orchard of Chaudhary Charan Singh Haryana Agricultural University, Regional Research Station, Bawal. The first appearance of maggots was observed in 1st fortnight of November, 2016 and maximum maggots (7) per fruit were recorded during February, 2017 at mean temperature range of 11.5 to 31.3 ⁰C and relative humidity range of 17.8 to 77 per cent. The infestation reached to the peak level of 44.00 per cent between February 2 to 11, 2017 when temperature ranged from 7.9 to 22.5 ⁰C and relative humidity ranged from 63.9 to 95.7 per cent. The infestation of C. vesuviana exhibited positive correlation with morning relative humidity (r= 0.723), evening relative humidity (r= 0.797) and total rainfall (r= 0.361). The studies on varietal/germplasm screening revealed that the variety/germplasm Kaithali exhibited maximum fruit fly infestation (51.06 %) and BS- 1 showed minimum fruit fly infestation (1.51 %). Fruit fly infestation had positive correlation with fruit size (r= 0.317), average fruit weight (r = 0.369), pulp : stone ratio (r = 0.351), total soluble solids (r= 0.342) and Vitamin C (r = 0.345). However fruit fly infestation was negatively correlated with fruit firmness (r= -0.326), acidity content (r= -0.374) and total phenolic content (r= -0.774). Early flowering and maturing varieties/germplasm exhibited more fruit fly infestation as compared to late flowering and maturing varieties/germplasm. Besides fruit fly, other insect pests were also recorded, which caused considerable damage to ber trees viz. chafer beetles, Cow bug (Oxyrachis spp.), Fruit borer (Meridarchis scyrodes Meyr), Hairy caterpillar (Euproctis lunata), Metallic shield bug (Scutellera perplexa Westwood), Lac Insect (Kerria lacca) and Hard gall mite (Eriophyes cernus). An overall consideration of all the parameters indicated that no single factor governed the infestation of fruit fly independently and the extent of infestation was an outcome of the contribution of all the factors together. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810041219 | |
| dc.keywords | Carpomyia vesuviana, Ber, Varietal/germplasm screening | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | CCSHAU | en_US |
| dc.sub | Entomology | en_US |
| dc.subject | null | en_US |
| dc.theme | Population dynamics and varietal/germplasm screening against ber fruit fly, Carpomyia vesuviana (Costa) on ber | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Population dynamics and varietal/germplasm screening against ber fruit fly, Carpomyia vesuviana (Costa) on ber | en_US |
| dc.type | Thesis | en_US |