Suppression of the Cowpea Bruchid (Callosobruchus maculatus (F.) Infesting Stored Cowpea (Vigna unguiculata (L.) Walp.) Seeds with Some Edible Plant Product Powders

2006 ◽  
Vol 9 (8) ◽  
pp. 1454-1459 ◽  
Author(s):  
F.A. Ajayi ◽  
H.U. Wintola .
Keyword(s):  
Vigna Unguiculata ◽  
Callosobruchus Maculatus ◽  
Edible Plant ◽  
Plant Product ◽  
Cowpea Bruchid

scholarly journals Estabilidade da resistência de genótipos de caupi a Callosobruchus maculatus (Fabr.) em gerações sucessivas

2002 ◽  
Vol 59 (2) ◽  
pp. 275-280 ◽  
Author(s):  
Marcileyne Pessôa Leite de Lima ◽  
José Vargas de Oliveira ◽  
Reginaldo Barros ◽  
Jorge Braz Torres ◽  
Manoel Eneas de Carvalho Gonçalves
Keyword(s):  
Vigna Unguiculata ◽  
Callosobruchus Maculatus

Callosobruchus maculatus (Fabr.) (Coleoptera: Bruchidae) é a principal praga do caupi (Vigna unguiculata L.) armazenado em condições tropicais e subtropicais. Avaliaram-se a estabilidade da resistência e a capacidade de adaptação de C. maculatus a genótipos de caupi, durante seis gerações. Utilizou-se o teste sem chance de escolha, em delineamento experimental inteiramente casualizado, em esquema fatorial, com dez tratamentos, seis gerações do inseto e cinco repetições. Cada repetição constou de 30 grãos infestados com dois casais da praga. O número de ovos/fêmea diferiu entre os genótipos de caupi apenas na sexta geração, e entre as gerações em BR14-Mulato, Bico de Pato, TE90-180-3E e TE87-98-8G. A viabilidade de ovos diferiu entre as gerações em BR17-Gurguéia, BR14-Mulato, IT89KD-260 e IT89KD-245, e entre os genótipos nas terceira, quinta e sexta gerações. Os genótipos diferiram entre e dentro das gerações, em relação à duração e a viabilidade da fase imatura. Observou-se redução na emergência, especialmente em IT89KD-245, IT89KD-260, CNC 0434, Bico de Pato, TE90-180-10F e BR14-Mulato, provavelmente devido a substâncias químicas presentes nos grãos que afetaram a sobrevivência dos insetos, ao longo das gerações. Os genótipos IT89KD-245 e IT89KD-260 comportaram-se como moderadamente resistentes. Não se observou adaptação de C. maculatus aos genótipos, mantendo-se a resistência estável através das gerações.

scholarly journals Evaluation on the Effect of Sustainable Environmental Friendly Bio-pesticide on the Growth of seed Borne Fungi (Aspergillus niger) on Cowpea (Vigna unguiculata L. Walp.)

2021 ◽  
Vol 4 (2) ◽  
pp. 55-79
Author(s):  
Azawei A. ◽  
Okorodo P.C. ◽  
Blessing E.
Keyword(s):  
Essential Oils ◽  
Vigna Unguiculata ◽  
Niger Delta ◽  
Seed Treatment ◽  
Callosobruchus Maculatus ◽  
Insect Pest ◽  
Soil Science ◽  
Plant Essential Oils ◽  
Environmental Friendly ◽  
Randomized Design

Evaluation on the Effect of Sustainable Environmental Friendly Bio Pesticides Application on the Growth of Seed borne Fungi on Cowpea (Vigna unguiculata L. Walp.) was conducted at the Department of Crop and Soil Science Laboratory, Niger Delta University, Wilberforce Island, Bayelsa State, Nigeria. To determine the percentage (%) efficacy of plant essential oils and to evaluate the best plant essential oil on the suppression of the pathogen cultured and treated Potatoes Dextrose Agar (PDA) plates with the different plant essential oils concentration levels (0.1, 0.01, and 0.001%). This experiment was arranged in Complete Randomized Design (CRD) and each treatment was replicated three times and each replicate contained 12 petri dishes. The result shows that ginger oil at 0.1 in all the days of the bioassay assessment, particularly, from day 6-day10 proved more effective in suppressing the teste pathogen (A. niger), this could be the present of the active ingredient (Zingerone) on the treatment. Therefore, this result should be encouraged for Cowpea farmers as seed treatment before storage to prevent Cowpea weevils (Callosobruchus maculatus) as a grain storage insect pest, that causes serious destruction on the stored grains.

Hypoxic environment protects cowpea bruchid (Callosobruchus maculatus) from electron beam irradiation damage

2018 ◽  
Vol 75 (3) ◽  
pp. 726-735 ◽  
Author(s):  
Lei Wang ◽  
Weining Cheng ◽  
Jia Meng ◽  
Mickey Speakmon ◽  
Jiangping Qiu ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Callosobruchus Maculatus ◽  
Irradiation Damage ◽  
Beam Irradiation ◽  
Hypoxic Environment ◽  
Cowpea Bruchid

Use of Microwave Heating Technology for Disinfestation of Stored Green Gram (Vigna radiata) against Cowpea Bruchid Callosobruchus maculatus (Fabricius)

2021 ◽  
Author(s):  
R. Kooner ◽  
D.K. Sharma ◽  
K.S. Suri
Keyword(s):  
Callosobruchus Maculatus ◽  
Pupal Stage ◽  
Exposure Period ◽  
Green Gram ◽  
Life Stages ◽  
Chemical Methods ◽  
Cowpea Weevil ◽  
Alternative Approach ◽  
Cowpea Bruchid ◽  
Heating Technology

Background: Pulses are an integral component of food in India which acts as major source of protein required for growth and maintenance of body. But during their storage they suffer heavy losses resulting in depletion of their quality and edibility. The present studies focused on disinfestation of green gram grains using microwaves as an alternative approach to chemical methods for controlling insects in grains and pulses. Methods: In this laboratory studies during 2017-18, the grains of green gram were infested with different life stages of the cowpea weevil and exposed to 200, 400, 600 and 800 W microwave power levels, each at an exposure period of 10, 20, 30 and 40 s. Result: Eggs were the most susceptible, while pupal and adults were the least susceptible life stages to microwave treatments. Complete mortality of eggs was achieved with microwave treatments (400, 600 and 800 W), each at an exposure period of 30 and 40 s. Complete inhibition of larval stage was attained with 400 and 600 W (30 and 40 s) and 800 W (20, 30 and 40 s exposure) while for pupal stage it was observed at the higher wattages of 600 (40 s exposure) and 800 (30 and 40 s exposure). Microwave wattage of 600 W for 40 sand 800 W for 30 and 40 s exposure caused 100% mortality of 2d old adults of cowpea bruchid.

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