Management of Helicoverpa armigera (Hubner) using biorationals and low cost traps in chickpea
| dc.contributor.advisor | Tiwari, Ruchira | |
| dc.contributor.author | Ajaykumara, K.M. | |
| dc.date.accessioned | 2019-01-31T07:22:14Z | |
| dc.date.available | 2019-01-31T07:22:14Z | |
| dc.date.issued | 2018-08 | |
| dc.description.abstract | To evaluate the efficacy of biorationals, such as animal urine collected from cow, buffalo, ox, goat, horse and used @20%, leaf extracts of congress grass, lantana, ekka, sugar apple, glory bower, nilgiri, Mexican prickly poppy plant and fruit extracts of chinaberry, karanj, jatropha, datura, golden shower, babool and algaroba @5% and to develop the attractant based low cost traps against H. armigera on chickpea, the studies were conducted under field and laboratory conditions during rabi crop seasons, 2016-17 and 2017-18 at Pantnagar, Uttarakhand. The field studies clearly showed that among the different plant and animal origin biorationals, Desi cow urine, horse urine, goat urine, fruit extracts of chinaberry, jatropha, karanj and datura were found effective against H armigera with mean larval population, pod damage and grain yield ranged from 2.83 to 4.06 larvae/10 plants, 13.00 to 18.80 per cent and 10.85 q/ha to 12.92 q/ha, respectively which was significantly higher than untreated control (11.78 larvae/10 plants, pod damage-38.70 per cent and grain yield-5.51q/ha). All the biorational treatments were found safe for the natural enemy, Campoletus chloridae with the mean cocoon population ranged from 1.51 to2.51 per ten plants in comparison to insecticide, indoxcarb (0.76/10 plants). The attractant based low cost traps with different plastic bottle models were constructed based on different host plant extracts, sweet baits, radium colored tape to catch adult moths of H. armigera on chickpea. The trap model design with top 1/4th portion inverted in down 3/4th portion of 1 litre plastic water bottle was found the best with bait of 300 ml of boiled jaggery solution @50% per trap for trapping significantly higher number of moths H. armigera with lessen effects on non target insect groups in chickpea crop ecosystem. The cost of this invented insect trap was calculated six times less i.e. only Rs 10.00 per trap than helilure based pheromone trap costs Rs 60.00 per trap. The laboratory studies on growth regulatory effect of different biorationals again showed the best efficacy of Desi cow urine, horse urine, goat urine, fruit extracts of chinaberry, jatropha against H. armigera as they caused cent per cent mortality of neonate larvae whereas fruit extracts of karanj, sugar apple, glory bower and leaf extracts of ekka plant and congress grass gave very less growth index values (0.087, 0.268, 0.362, 0.375and 0.676) in comparison to untreated control (2.631). The studies conducted on antifeedant activity of biorational treatments against 4th larval instar of H. armigera showed that Desi cow urine, horse urine, goat urine, leaf extracts of ekka plant and sugar apple, fruit extracts of chinaberry, karanj and datura were found with strong antifeedant action with preference index between (0.35 to 0.50) The olfactometer based preliminary studies clearly indicated that jaggery solution @50% and stored for 10 days was quite effective to orient or attract the adult moths of H. armigera. Thus, it can be concluded that, the tested plant and animal originated biorationals and attractant based low cost trap models can surely be incorporated in an integrated pest management programme of H. armigera as they are easily available, cost effective and eco-friendly for management of this notorious pest in chickpea crop ecosystem. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810093085 | |
| dc.keywords | pest management, Helicoverpa armigera, biological control, traps, chickpeas | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 241 | en_US |
| dc.publisher | G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand) | en_US |
| dc.research.problem | Chickpeas | en_US |
| dc.sub | Entomology | en_US |
| dc.subject | null | en_US |
| dc.theme | Insect Pests | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | Management of Helicoverpa armigera (Hubner) using biorationals and low cost traps in chickpea | en_US |
| dc.type | Thesis | en_US |