Consulta: subjectFacets:"Azadirachtin"
Registros recuperados: 3
Data/hora: 06/06/2024 00:32:34

Acute toxicity of azadirachtin to a teleost, Heteropneustes fossilis - doi: 10.4025/actascibiolsci.v34i2.9455
Provedor de dados: 3
Autores: Kumar, Abhishek; DDU Gorakhpur University - India; Prasad, ManiRam; DDU Gorakhpur University - India; Mishra, Diwakar; DDU Gorakhpur University - India; Srivastav, Sunil Kumar; DDU Gorakhpur University - India; Srivastav, Ajai Kumar; DDU Gorakhpur University - India.
The acute static renewal test of a botanical pesticide - azadirachtin for the freshwater catfish, Heteropneustes fossilis has been performed to determine the LC50 values at different exposure period. The LC50 values at various exposure periods are 173.06 mg L-1 for 24h; 80.69 mg L-1 for 48h; 58.57 mg L-1 for 72h and 52.35 mg L-1 for 96h. The upper confidence limits were 196.87, 86.91, 79.20 and 70.04 mg L-1 for 24, 48, 72 and 96 h and lower confidence limits were 154.01, 74.24, 37.33 and 33.83 mg L-1, respectively. These results indicate that azadirachtin exposure to the fish caused toxic effects.
Palavras-chave: Neem; Azadirachtin; LC50; Heteropneustes fossilis; Fish Animal Morphology and Physiology; Toxicology Neem  azadirachtin; LC50; Heteropneustes fossilis; Fish.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9455

Efficacy of bio-insecticides on Tuta absoluta (Meyrick) (Lep.: Gelechiidae) in laboratory and field conditions
Provedor de dados: 111
Autores: Hosseinzadeh, Abbas; Aramideh, Shahram; Ghassemi-Kahrizeh, akbar.
Tuta absoluta (Meyrick) is a devastating pest of tomato. This pest is becoming resistant to many of the pesticides that used in the tomato fields. In this research, the efficacy of four bio-insecticides namely, thiocyclam, spinosad, Bacillus thuringiensis and azadirachtin (Azadirachta indica) were studied on the tomato leaf miner in the laboratory and field conditions. Laboratory experiments were performed in a randomized complete plot design with three replications against 1st, 2nd and 3rd larvae. Field experiment was carried out on three larval stages based on recommended doses of pesticides in the form of a completely randomized block. The results showed that in laboratory conditions, LC50 values and lower and upper bond with 95% confidence limits of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Assistant Professor Tomato leaf miner; Bacillus thuringiensis; Spinosad; Azadirachtin; Thiocyclam.
Ano: 2019
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5166

Mating behavior of the predator Podisus nigrispinus (Heteroptera: Pentatomidae) under exposure to neem: Comportamiento de apareamiento del depredador Podisus nigrispinus (Heteroptera: Pentatomidae) expuesto al neem
Provedor de dados: 117
Autores: Domingues de Oliveira,Sharrine Omari; Faria Barbosa,Wagner; Vilca Malqui,Karina Soledad; Carvalho Guedes,Raul Narciso.
The preservation of natural enemies is one of the basic foundations for integrated pest management. Botanical insecticides have shown low impact on beneficial arthropods in relation to survival. Insecticides studies usually focus on the direct physiological effects of insecticides, whereas relatively little attention is placed on the behavioral response to exposure. A study was conducted to evaluate the effect of the botanical insecticide neem (Azadirachta indica A. Juss.; Meliaceae) on the mating behavior of the predatory stinkbug Podisus nigrispinus (Heteroptera: Pentatomidae). Unmated 5 to 7 d-old adults, separate by sex, were exposed to azadirachtin per contact on the treated surface. The treatments were composed for: untreated male and female;...
Tipo: Journal article
Palavras-chave: Azadirachtin; Azadirachta indica; Biological insecticide; Natural enemy.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400010