Studies on Growth and Development of Helicoverpa armigera (Hub.) on Various Hosts and Artificial Diet under Laboratory Conditions

Kumar, Lomash; Bisht, R. S.; Singh, Harsh Vardhan; Kumar, Mohit

doi:10.20546/ijcmas.2017.612.183

Cited by 5 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, technique of cellular examination with help of a small paper box may be the paradigm shift in Oak tasar grainage activities. Similar results were observed by Kumar (2017), Dinesh Kumar (2012), Ahsan, (1974 and Dash et al (1993) in tropical tasar activities.…”

Section: Resultssupporting

confidence: 84%

Cellular Moth Examination: A Paradigm Shift in Oak Tasar Grainage Activity

Binkadakatti¹,

Gadad²,

Mittal³

et al. 2022

PLANT ARCHIVES

View full text Add to dashboard Cite

In India during some past years, the oak tasar cocoon production has drastically reduced due to certain disease in oak tasar silkworms, which has lead to significant mortality to the batches of oak tasar silkworms. The damage caused by this disease decreases cocoon crop production up to 80%. As the disease is transmitted through mother moth, it is very essential to avoid the transmission of disease during the grainage activities. The seed sector is backbone for the development of the silk industry. Quality of oak tasar seed and efficiency of grainage depend on the quality of the cocoons, selection of healthy seed cocoon, effective microscopic examination and production of healthy & quality Dfl's. Since long, many techniques have been identified to produce disease free layings (Dfls). Among them REC, Palampur preferred cellular moth examination technique (CMET) for the production of Dfl's. During the year 2016 to 2018, REC, Palampur used CMET by using small paper box of size lenght-3.5'', width-4.5'' and height-2.5'', in which single female moth was kept for oviposition. After the completion of oviposition, each moth was microscopically examined for identification of any infection such as bacteria, pebrine etc and in case of any infection, Dfl produced was rejected and destroyed instantly. Before the year 2016, mass oviposition was practiced, in which small nylon net was used to keep 10-15 moths together. This resulted to remarkable loss/ rejection of the Dfl's, leading to the reduction in Dfl's production. Pooled data of mass examination and cellular examination indicated that, cellular examination resulted with decrease in cocoon-Dfl ratio (from 13.64:1 to 4.36:1), decrease in rejection of Dfl's after microscopic examination (from 51.74% to 4.54%) and increasing trend in grainage from 48.26% to 95.21%. This trend clearly indicated that, cellular examination of egg layings is very much encouraging for production of oak tasar seeds and successful grainage activities.

show abstract

Section: Resultssupporting

confidence: 84%

Cellular Moth Examination: A Paradigm Shift in Oak Tasar Grainage Activity

Binkadakatti¹,

Gadad²,

Mittal³

et al. 2022

PLANT ARCHIVES

View full text Add to dashboard Cite

show abstract

“…Agricultural insect pests H. armigera, S. litura, A. segetum and M. separata were collected from agricultural fields of Eternal University and from farmer's field at different localities. The culture of all these host insects were maintained using the earlier methodology described for the laboratory rearing of H. armigera (27), S. litura (28), A. segetum (29,30) and M. separata (31) respectively.…”

Section: Collection Of Host Insects and Their Rearing In The Laboratorymentioning

confidence: 99%

Indigenous entomopathogenic nematode as biocontrol agents for insect pest management in hilly regions

2022

View full text Add to dashboard Cite

The present investigation mainly emphasized on the development and use of entomopathogenic nematodes (EPNs) as a bio-insecticide. The success in controlling insect pests in the soil environments increased the production and use of the adapted indigenous EPNs species for insect management in the fields. EPNs as biocontrol agents were capable for high virulence, easy for application, safe for non-target animals and eco-friendly in nature. These nematodes have ubiquitous nature. These occur in low population in their natural habitat which was mass multiplied in the laboratory. In the present investigation, 5 concentrations (30IJs, 60IJs, 90IJs, 120IJs and 150IJs) of Heterorhabditis bacteriophora strain S15 were applied against the 3rd and 4th instar larvae of four major agricultural insect pests, namely Helicoverpa armigera, Spodoptera litura, Agrotis segetum and Mythimna separata under laboratory conditions at different time exposure (24, 48, 72 and 96 hr). It was observed that the 3rd and 4th larval instars of all 4 insects (H. armigera, S. litura, A. segetum and M. separata) were highly susceptible for the pathogenesis caused by H. bacteriophora Sirmaur isolates. Amongst all insects, both the larval instars of M. separata are highly susceptible for EPNs infection with highest 96% and 98% mortality in highest dose @150IJs. In 3rd instar larvae of other insects such as H. armigera, S. litura and A. segetum larval mortality ranges from 84%, 92% and 94% respectively. Among 4th instar larvae of H. armigera, S. litura and A. segetum the pathogenicity varies from 88%, 94% and 96% respectively. The recorded median lethal concentration (LC50) in 3rd instar larvae of H. armigera, S. litura, A. segetum and M. separata varies from 36.15, 30.05, 30.97 and 23.8. Similarly in 4th instar larvae of H. armigera, S. litura, A. segetum and M. separata, LC50 ranged from 31.41, 28.64, 26.92 and 20.64 respectively. Statistically significant variations were observed in the data recorded on the mortality, in all the treatments. EPNs are the best weapon to overcome insect resistance problems and must be employed to manage insect population.

show abstract

“…It is polyphagous in nature and feeds on about 180 plant species (Kassi et al, 2018). Its control and management practices are much difficult due to fast mobility, fecundity, survival rate and ability to develop resistance against insecticides (Kumar et al, 2017). In case of capitulum borer, all hybrids remained below ETL as no hybrid showed significant difference for population of capitulum borer.…”

Section: Capitulum Borer (Helicoverpa Armigera)mentioning

confidence: 99%

Evaluation of Promising Sunflower Hybrids against Whitefly, Jassid and Capitulum borer

Malik¹,

Zubai²,

Ali³

et al. 2021

Int. J. Adv. Res. Biol. Sci

View full text Add to dashboard Cite

Pakistan imports edible oil to meet the national demands posing burden on national exchequer. She is trying to grow edible oil crops to overcome this expense. Area under Sunflower cultivation is continuously increasing in Pakistan. But, insect pest infestation is a major concern for the growers. There is a need to develop hybrids which are less susceptible to the insect pests. Present study was conducted to find the most less susceptible Sunflower hybrids. Promising sunflower hybrids were grown and relevant data were recorded. All the hybrids were found moderately resistant to Resistant. This response is subject to the availability of insect population in the field and environment plays an integral role in it. There is dire need to explore the potential further of these hybrids. Keywords: Sunflower, Hybrid, Screening, Whitefly, Jassid, capitulum borer

show abstract

Studies on Growth and Development of Helicoverpa armigera (Hub.) on Various Hosts and Artificial Diet under Laboratory Conditions

Cited by 5 publications

References 2 publications

Cellular Moth Examination: A Paradigm Shift in Oak Tasar Grainage Activity

Cellular Moth Examination: A Paradigm Shift in Oak Tasar Grainage Activity

Indigenous entomopathogenic nematode as biocontrol agents for insect pest management in hilly regions

Evaluation of Promising Sunflower Hybrids against Whitefly, Jassid and Capitulum borer

Contact Info

Product

Resources

About