scholarly journals Using of Entomopathogenic Fungi against Fabae bean Aphid, Aphis craccivora (Koch)

2019 ◽  
Vol 12 (01) ◽  
pp. 216-222
Author(s):  
I. E. Abdel-Rahman ◽  
F. H. Faragalla
Keyword(s):  
Entomopathogenic Fungi ◽  
Aphis Craccivora ◽  
Aphis Craccivora Koch

scholarly journals Entomopathogenic Fungi on Fabae bean Aphid, Aphis craccivora (Koch) (Hemiptera: Aphididae)

2021 ◽  
Vol 26 (4) ◽  
pp. 2862-2868
Author(s):  
ABDEL-RAHEEM M.A. ◽  
ABLA F.A. SAAD ◽  
ABDEL-RAHMAN I.E.
Keyword(s):  
Biological Control ◽  
Entomopathogenic Fungi ◽  
Metarhizium Anisopliae ◽  
Laboratory Experiments ◽  
Aphis Craccivora ◽  
Agricultural Fields ◽  
Verticillium Lecanii ◽  
Biological Control Agents ◽  
Lc50 Value ◽  
Aphis Craccivora Koch

The Aphids, Aphis craccivora (Koch) is a serious pest in agricultural fields in Egypt. Entomopathogenic fungi are biological control agents of insects. The study was carried out on the aphid by using of Bio Catch, Verticillium lecanii, Bio Power, Beauveria bassiana and Bio Magic, Metarhizium anisopliae on A. craccivora. Laboratory experiments were done to measure the pathogenicity of three commercial compounds from entomopathogenic fungi, Bio Catch, V. lecanii, Bio Power, B. bassiana, and Bio Magic, M. anisopliae against adults and nymphs of A. craccivora. Three concentrations were used from all compounds, 107 , 108 and 109 spores/ml. at 22 ± 2°C and 75 ± 5 R.H. The concentration (109 spores/ml.) gave 100% mortality with V. lecanii and B. bassiana then M. anisopliae. The Lowest LC50 value of 2.1 x 106 spores/ml. was recorded by V. lecanii, which showed higher virulence compared to other entomopathogenic fungi. The LC50 values of V. lecanii, B. bassiana and M. anisopliae were 2.1 x 106 , 4.3 x 106 and 6.4 x 107 spores ml., respectively. At the highest concentration of 109 spores/ml., the Median LT50 values for V. lecanii, B. bassiana and M. anisopliae were 4.2, 5.2 and 7.0 days, respectively.

scholarly journals SURVEY of ENTOMOPATHOGENIC FUNGI NATURALLY INFECTING COWPEA APHID, Aphis craccivora. KOCH.

2011 ◽  
Vol 2 (12) ◽  
pp. 1063-1070 ◽  
Author(s):  
H. Ibrahim ◽  
A. Salam ◽  
M. Abdel-Mogib ◽  
M. El-nagar ◽  
Hoda Salem ◽  
...  
Keyword(s):  
Entomopathogenic Fungi ◽  
Aphis Craccivora ◽  
Cowpea Aphid ◽  
Aphis Craccivora Koch

Potency of Three Botanical Oils Against the Aphis Craccivora Koch (Homoptera: Aphididae) Nymphs Under Laboratory Conditions

2021 ◽  
Vol 19 (1) ◽  
pp. 139-154
Author(s):  
MA Hossain ◽  
MS Yasmin ◽  
MAA Bachchu ◽  
MA Alim
Keyword(s):  
Treatment Time ◽  
Probit Analysis ◽  
Aphis Craccivora ◽  
Tween 20 ◽  
Laboratory Conditions ◽  
Significant Difference ◽  
Aphis Craccivora Koch ◽  
Insect Mortality ◽  
Oil Repellent ◽  
Swietenia Mahagoni

Botanicals are promising and attractive alternatives for pest management. In the present study, three botanical oils namely neem (Azadirachta indica), karanja (Pongamia pinnata) and mehogony (Swietenia mahagoni) were tested against the nymphs of Aphis craccivora Koch to evaluate the toxic and repellent effects under laboratory conditions (25 ± 5oC, 65-75% RH). Four concentrations (0.5, 1.0, 1.5, and 2.0%) along with control were maintained with distilled water and tween-20 was used as emulsifier. Leaf dipped method were used for insect bioassay. Insect mortality was recorded at 24, 48 and 72 hours after intervals while repellency was carried out at 2 hours after intervals upto 10th hours and the collected data were analyzed through MSTAT-C program. Results indicated that all the tested oils had toxic and repellent effects against the A. craccivora nymphs. Among the tested botanical oils, no significant difference was observed in terms of mortality over treatment time. But significant difference was noticed over level of concentrations exerted by the botanical oils. The average highest mortality (28.62%) was recorded by the application of mehogony oil whereas neem oil showed the lowest mortality (27.21%) against the A. craccivora and the mortality was directly proportional to the level of concentrations and hour after treatment (HAT). Probit analysis showed the lowest LD50 values of mehogony oil which revealed the highest toxic effect against the nymph of bean aphid. The highest repellent effect (77.33%) was found in mehogony oil (repellent class IV) among all the botanical oils applied. On the contrary, neem (57.33%) and karanja (55.00%) oils belonged to the same repellent class that is repellent class II. Although all the tested botanical oils evaluated showed toxic and repellent effects but mehogony oil performed as the best potent oil against the nymphs. We therefore suggested using the mehogony oil for the management of bean aphid. SAARC J. Agric., 19(1): 139-154 (2021)

Effects of intersowing with beans on the spread of groundnut rosette virus by Aphis craccivora Koch (Hemiptera, Aphididae) in Malawi

1976 ◽  
Vol 66 (2) ◽  
pp. 331-333 ◽  
Author(s):  
J. A. K. Farrell
Keyword(s):  
Phaseolus Vulgaris ◽  
Arachis Hypogaea ◽  
Virus Disease ◽  
High Density ◽  
Aphis Craccivora ◽  
Plant Populations ◽  
Bean Plants ◽  
Aphis Craccivora Koch ◽  
Field Beans

AbstractIn two trials, at Chitedze, Malawi, in 1966–1967, the spread of rosette virus disease in groundnuts (Arachis hypogaea) intersown with field beans (Phaseolus vulgaris) was less than the spread in groundnut monocultures comprising plant populations equivalent to the number of groundnut plants and to the total number of plants in the intersown crop. In one trial, numbers of early rosette transmissions were related to numbers of alate Aphis craccivora Koch, the vector of the virus, found on groundnut plants. Immigrant alate A. craccivora settling on the intersown crop were trapped by the hooked epidermal hairs of the bean plants and the observed reduction of rosette infection in the intersown crop was attributed to this effect. Inter-sowing with beans is considered less effective than early-sown, high-density monoculture as a method of reducing groundnut rosette infections and yields of groundnuts from inter-sown crops may be lower than those obtained from high-density monoculture.

Behavioural response of alate Aphis craccivora Koch (Homoptera: Aphididae) to volatiles from different cowpea cultivars

2019 ◽  
Vol 143 (6) ◽  
pp. 659-669
Author(s):  
Seydou Diabate ◽  
Emilie Deletre ◽  
Lucy Kananu Murungi ◽  
Komi K.M. Fiaboe ◽  
John Wesonga ◽  
...  
Keyword(s):  
Behavioural Response ◽  
Aphis Craccivora ◽  
Cowpea Cultivars ◽  
Aphis Craccivora Koch

scholarly journals Resistance in alfalfa to Aphis craccivora Koch

2015 ◽  
Vol 75 (4) ◽  
pp. 451-456 ◽  
Author(s):  
Lilian R Descamps ◽  
Carolina Sánchez-Chopa ◽  
Jorge Bizet-Turovsky
Keyword(s):  
Aphis Craccivora ◽  
Aphis Craccivora Koch
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