Results 61 to 70 of about 10,501 (229)

Host plant induced variation in gut bacteria of Helicoverpa armigera. [PDF]

PLoS ONE, 2012
Helicoverpa are important polyphagous agricultural insect pests and they have a worldwide distribution. In this study, we report the bacterial community structure in the midgut of fifth instar larvae of Helicoverpa armigera, a species prevalent in the ...
Natarajan Gayatri Priya, Abhishek Ojha, Mayur K Kajla, Anand Raj, Raman Rajagopal   +4 more
doaj   +1 more source

Chitosan‐protected dsRNA increases efficacy against Helicoverpa armigera without compromising biosafety for pollinators

Pest Management Science, EarlyView.
Chitosan/tripolyphosphate/double‐stranded RNA (dsRNA) nanoparticles enhance RNA interference efficacy of orally delivered dsRNA against Helicoverpa armigera. Nanoparticles reduce the LC50 and do not cause deleterious effects or toxicity on beneficial insects.
Daniel DN Vasquez, Lays A Teixeira, Rangel F Alves, Raire Cavalcante, Leonardo LP Macedo, Carmen SS Pires, Luciano P Silva, Maria CM Silva, Feras M Afifi, Carolina V Morgante, Martin G Edwards, Angharad MR Gatehouse, Maria F Grossi‐de‐Sa   +12 more
wiley   +1 more source

Occurrence of Helicoverpa armigera (Hübner, 1808) on citrus in the state of Sao Paulo, Brazil

Revista Brasileira de Fruticultura, 2014
The occurrence of Helicoverpa armigera (Hübner, 1808) was first reported in citrus orchard in the state of São Paulo (SP). High infestation levels of H. armigera were observed in October 2012, in the city of Botucatu, SP.
Regiane Cristina Oliveira de Freitas Bueno, Pedro Takao Yamamoto, Marina Mouzinho Carvalho, Nádia Maebara Bueno   +3 more
doaj   +1 more source

The cotton bollworm (Helicoverpa armigera) and Azuki bean beetle (Callosobruchus chinensis): major chickpea (Cicer arietinum L.) production challenges on smallholder farmers in Ethiopia

Journal of Basic and Applied Zoology, 2022
Background Chickpea (Cicer arietinum L.) is one of the most principally important legume crops in Ethiopia. Its production is mainly constrained by insect pests.
Tarekegn Fite, Tadele Tefera
doaj   +1 more source

HvarAKR1B1‐mediated tolerance in Hippodamia variegata: Deciphering the metabolic adaptation and fitness costs under prolonged starvation

Pest Management Science, EarlyView.
Starvation stress significantly affected the growth and development of Hippodamia variegata. Combined transcriptome and metabolome analysis and RNA interference verification revealed that HvarAKR1B1 may be involved in the response of Hippodamia variegata to starvation stress.
Bing‐mei Song, De‐qin Hu, Yuan Li, Wang‐quan Jiao, Xiao‐li Ma, Hong‐sheng Pan   +5 more
wiley   +1 more source

New resistance mechanism in Helicoverpa armigera threatens transgenic crops expressing Bacillus thuringiensis Cry1Ac toxin

, 2005
In Australia, the cotton bollworm, Helicoverpa armigera , has a long history of resistance to conventional insecticides. Transgenic cotton (expressing the Bacillus thuringiensis toxin Cry1Ac) has been grown
Moores, G., Dang, H., Gunning, R. V., Moores, G. D., Kemp, F., Dang, H. T., Nicholson, I. C., Nicholson, I., Gunning, R., Kemp, F. C.   +9 more
core   +1 more source

Mapping the global threat of Mythimna separata (Walker) and its economic implications for Brazil's agriculture

Pest Management Science, EarlyView.
Global models identified high‐risk areas for Mythimna separata invasion, highlighting major economic vulnerability for Brazilian crops and guiding targeted prevention and management strategies. Abstract BACKGROUND Identifying high‐risk areas for the introduction of invasive alien species is particularly important for agricultural pests with a broad ...
Gabriel Dorotel da Silva Ferreira, Cesar Augusto Marchioro   +1 more
wiley   +1 more source

SINERGISME Spodoptera litura Nuclear Polyhedrosis Virus JTM 97C (SlNPV-JTM 97C) DENGAN EKSTRAK BIJI SIRSAK (Annona muricata L.) DALAM PENGENDALIAN Helicoverpa armigera Hubner (Lepidoptera: Noctuidae) PADA TANAMAN KEDELAI (Glycine max L.) DI LABORATOR

Jurnal HPT (Hama Penyakit Tumbuhan), 2016
ABSTRAK Helicoverpa armigera merupakan hama penting pada tanaman kedelai. Penelitian dilakukan untuk mengetahui sinergisme antara ekstrak biji sirsak dan SlNPV-JTM 97C. Sinergisme ekstrak biji sirsak dengan SlNPV-JTM 97C terhadap H.
Raditya Dwi Saputra, Tutung Hadiastono, Aminudin Afandhi, Bedjo Bedjo   +3 more
doaj  

Bt agave: why it is time to explore a new biotechnological frontier

Pest Management Science, EarlyView.
Drylands cover 41% of Earth, requiring sustainable crops. Agave, drought‐ and heat‐adapted, offers high‐value products with low water needs. Pests limit yield, yet Bacillus thuringiensis (Bt) Cry proteins, successful in other plants, remain unexploited in Agave.
Aline Vitória Corim Marim, Marcelo Falsarella Carazzolle, Gonçalo Amarante Guimarães Pereira, Carolina Rossi De Oliveira   +3 more
wiley   +1 more source

New insights on the effects of spinosad on the development of Helicoverpa armigera

Ecotoxicology and Environmental Safety, 2021
Helicoverpa armigera (cotton bollworm) is one of the most destructive pests worldwide. Due to resistance to Bacillus thuringiensis and conventional insecticides, an effective management strategy to control this pest is urgently needed. Spinosad, a natural pesticide, is considered an alternative; however, the mechanism underlying the developmental ...
Shuangyan Yao, Yue Yang, Yuying Xue, Wenli Zhao, Xiaoguang Liu, Mengfang Du, Xinming Yin, Ruobing Guan, Jizhen Wei, Shiheng An   +9 more
openaire   +3 more sources