Efficacy of combined treatments of abamectin with three inert dusts for the control of Callosobruchus chinensis on cowpea seeds

2022 ◽  
Vol 153 ◽  
pp. 105884
Author(s):  
Hassan A. Gad ◽  
Ayman A.M. Atta ◽  
Samir A.M. Abdelgaleil
Keyword(s):  
Callosobruchus Chinensis ◽  
Combined Treatments ◽  
Cowpea Seeds ◽  
Inert Dusts

scholarly journals Susceptibility of different life stages of Callosobruchus maculatus and Callosobruchus chinensis to ECO2FUME gas and its impact on cowpea seeds quality

2021 ◽  
Author(s):  
Manar Y. Amin ◽  
Abeer Omar Abotaleb ◽  
Refaat A. Mohamed
Keyword(s):  
Callosobruchus Maculatus ◽  
Developmental Stages ◽  
Chemical Constituents ◽  
Application Rate ◽  
Insect Species ◽  
Callosobruchus Chinensis ◽  
Life Stages ◽  
Post Exposure ◽  
Cowpea Seeds ◽  
Fume Suppression

Abstract ECO2FUME® phosphine fumigant was used to fumigate stored cowpea piles under gas-proof sheets to assess its performance against different developmental stages of Callosobruchus maculatus and Callosobruchus chinensis. The mortality was determined on four developmental stages of C. maculatus and C. chinensis, employing ECO2FUME at different concentrations 25, 30, 40, and 50 g/m3 (2% PH3 and 98% CO2 by weight) for 3-days. All stages of both insect species in packed cowpea stacks were completely controlled at 3-days when applied with an ECO2FUME application rate of 50 g/m3. Cases of pupae of C. maculatus and C. chinensis exhibit the highest resistance than other stages, with 78.2 and 73.93% mortality respectively, at 40 g/m3 after 3-days post-exposure to ECO2FUME. Suppression of F1 generation was obtained after fumigation with the same concentration (50 g/m3). Quality (in terms of cowpea germination) and all chemical constituents of cowpea seeds were non significantly (P ≤ 0.05) affected by the fumigation concentration of 50 g/m3.

scholarly journals The efficacy of diatomaceous earth in mixed formulation with other dusts and an insecticide against the pulse beetles, Callosobruchus chinensis L. and Callosobruchus maculatus (F.)

2013 ◽  
Vol 31 ◽  
pp. 73-78 ◽  
Author(s):  
Shah Hussain Ahmad Mahdi ◽  
M Khalequzzaman
Keyword(s):  
Diatomaceous Earth ◽  
Callosobruchus Maculatus ◽  
Alluvial Soil ◽  
Coal Ash ◽  
Synergistic Action ◽  
Callosobruchus Chinensis ◽  
Black Gram ◽  
China Clay ◽  
Inert Dusts ◽  
Normal Food

Effectiveness of diatomaceous earth (DE) and other inert dusts (kaolin powder, paddy husk ash, coal ash, alluvial soil, china clay) and a dust formulation insecticide carbaryl have been tested on the pulse beetles Callosobruchus chinensis L. and C. maculatus (F.). The bioassay of the dusts was done on adult beetles by mixing them with normal food (lentil and black gram seeds). The LD50 of the combined doses of mixtures for C. chinensis have been calculated as 12703.57 and 859.36 ppm for DE+ kaolin powder; 2432.78 and 274.00 ppm for DE+ paddy hush ash; 3430.036 and 426.16 ppm for DE+ coal ash; 12563.47 and 652.29 ppm for DE+ alluvial soil; 2242.81 and 325.76 ppm for DE+ china clay; and 21.33 and 14.45 ppm for DE+ carbaryl after 24 and 48 h after treatment respectively. The LD50 of combined doses of different mixtures for C. maculatus have been calculated as 3640.65 and 503.74 ppm for DE+ kaolin powder; 54946.68 and 987.2394 ppm for DE + paddy hush ash; 61029.04 and 3229.436 ppm for DE+ coal ash; 61029 and 4265.599 ppm for DE+ alluvial soil; 4648.786 and 642.278 ppm for DE+ china clay; and 24.12017 and 15.47023 ppm for DE+ carbaryl after 24 and 48 h after treatment respectively. The co-toxicity coefficient has been calculated and all ratios showed synergistic action. The highest co-toxicity coefficient was recorded as 88885.15 and 92107.22 in DE+ carbaryl at 24 and 48 h after treatment for C. chinensis and 78615.55 and 86004.88 in DE+ carbaryl at 24 and 48 h after treatment for C. maculatus. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15436Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 73-78

scholarly journals Sources of semiochemicals mediating host finding in Callosobruchus chinensis (Coleoptera: Bruchidae)

2003 ◽  
Vol 93 (3) ◽  
pp. 187-192 ◽  
Author(s):  
A. Babu ◽  
A. Hern ◽  
S. Dorn
Keyword(s):  
Chemical Composition ◽  
Host Finding ◽  
Fourth Instar ◽  
Gas Chromatography Mass Spectrometry ◽  
Callosobruchus Chinensis ◽  
Dimethyl Disulphide ◽  
Cowpea Seeds ◽  
Legume Seeds ◽  
Conspecific Adult ◽  
Potential Use

AbstractBruchid pests such as Callosobruchus chinensis (Linnaeus) endanger stored legume seeds throughout the tropical belt. The chemical composition of the headspace volatiles from healthy and fourth instar larvae-infested cowpea seeds were identified, characterized, and compared using gas chromatography–mass spectrometry. Y-tube olfactometer bioassays were performed to evaluate the effect of these chemicals on the orientation of conspecific adult females. Analysis of volatiles released from healthy and infested seeds revealed qualitative differences for three out of the 17 compounds identified. Dimethyl disulphide, isobutenyl methyl ketone and methyl trisulphide were found only in the blend emitted from infested but not from healthy seeds. Quantitative differences were apparent for tridecane which was released in larger amounts from infested seeds. While volatiles collected from healthy seeds were attractive to female bruchids, volatiles collected from infested seeds were repellent. To test the hypothesis that the qualitative differences in the chemical composition found may be due to insect-derived components, the volatiles from frass and fourth instar larvae combined were analysed. These volatiles contained both of the sulphides emitted from infested seed but not from healthy seeds. Although a limited induction of volatiles from cowpea seeds cannot be excluded, it is postulated that behavioural differences of the female weevils are largely due to insect-derived semiochemicals. The potential use of such semiochemicals as part of an integrated pest management strategy is discussed.

scholarly journals Susceptibility of different life stages of Callosobruchus maculatus and Callosobruchus chinensis to ECO2FUME gas and its impact on cowpea seeds quality

2021 ◽  
Author(s):  
Manar Y. Amin ◽  
Abeer Omar Abotaleb ◽  
Refaat A. Mohamed
Keyword(s):  
Callosobruchus Maculatus ◽  
Developmental Stages ◽  
Chemical Constituents ◽  
Application Rate ◽  
Insect Species ◽  
Callosobruchus Chinensis ◽  
Life Stages ◽  
Post Exposure ◽  
Cowpea Seeds ◽  
Fume Suppression

Abstract ECO2FUME gas is an alternative to toxic phosphine fumigant and as a quarantine treatment for the control of a particularly recalcitrant pest, Callosobruchus maculatus and Callosobruchus chinensis. This gas was used to fumigate stored cowpea piles under gas-proof sheets to assess its performance against different developmental stages of Callosobruchus maculatus and Callosobruchus chinensis. The mortality was determined on four developmental stages of C. maculatus and C. chinensis, employing ECO2FUME at different concentrations 25, 30, 40, and 50 g/m3 for 3-days. All stages of both insect species in packed cowpea stacks were completely controlled at 3-days when applied with an ECO2FUME application rate of 50 g/m3. Cases of pupae of C. maculatus and C. chinensis exhibit the highest resistance than other stages, with 78.2 and 73.93% mortality respectively, at 40 g/m3 after 3-days post-exposure to ECO2FUME. Suppression of F1 generation was obtained after fumigation with the same concentration (50 g/m3). Quality (in terms of cowpea germination) and all chemical constituents of cowpea seeds were non significantly (P≤0.05) affected by the fumigation concentration of 50 g/m3.

Efficacy of ozone for Callosobruchus maculatus and Callosobruchus chinensis control in cowpea seeds and its impact on seed quality

2021 ◽  
Vol 92 ◽  
pp. 101786
Author(s):  
Hassan A. Gad ◽  
Gomaa F. Abo Laban ◽  
Khaled H. Metwaly ◽  
Fathia S. Al-Anany ◽  
Samir A.M. Abdelgaleil
Keyword(s):  
Seed Quality ◽  
Callosobruchus Maculatus ◽  
Callosobruchus Chinensis ◽  
Cowpea Seeds
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