Laboratory bioassay of selected plant extracts for the control of brown cocoa mirid, Sahlbergella singularis Haglund (Hemiptera: Miridae)
نویسندگان
چکیده
منابع مشابه
Field evaluation of synthetic sex pheromone traps for the cocoa mirid Sahlbergella singularis (Hemiptera: Miridae).
BACKGROUND Field trapping experiments were conducted to evaluate the attractiveness of five different pheromone blends as well as the impact of trap design on attractiveness towards cocoa mirids, Sahlbergella singularis Hagl. and Distantiella theobroma (Dist.), in Cameroon. RESULTS A total of 361 adults of S. singularis (359 males and two females) were caught. The highest numbers of mirids we...
متن کاملAntixenosis as a mechanism of cocoa resistance to the cocoa mirid, Sahlbergella singularis (Hemiptera: Miridae) [Antixénose comme une mécanisme de résistance du cacaoyer au miride, Sahlbergella singularis (Hemiptera: Miridae)]
Objectives: The objectives of this study were to confirm the existence and heritability of mirid resistance in selected promising cocoa genotypes and to determine whether antixenosis is involved in the mechanism of resistance. Methodology and results: Ten cocoa hybrids obtained from crosses between clones identified as susceptible or promising for resistance to the cocoa mirid, Sahlbergella sin...
متن کاملIsolation and Characterization of Twelve Polymorphic Microsatellite Loci for the Cocoa Mirid Bug Sahlbergella Singularis
Mirids are the primary pests affecting cocoa production in Africa, but no genetic studies have been conducted on these insects. Here we report the isolation and characterization of 12 polymorphic microsatellite loci for Sahlbergella singularis. A microsatellite-enriched genomic DNA library was developed and screened to identify marker loci. Twelve polymorphic loci were identified by screening 2...
متن کاملEvaluation of Field Damage and Chemical Control of Outbreak of Sahlbergella singularis Haglund in a Cocoa Plantation in Ibadan, Nigeria
Field evaluation of damage caused by the brown cocoa mirid, Sahlbergella singularis was based on three parameters, namely, lesions on pods, cankers on trunks and dieback of twigs. Damage assessment based on scoring exceeded 75% for damage to the trunks and fan branches while damage to the pods was more than 50% by the second cocoa season. Laboratory evaluation of endosulphan 35 EC applied at 0....
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
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ژورنال
عنوان ژورنال: Journal of Entomology and Nematology
سال: 2013
ISSN: 2006-9855
DOI: 10.5897/jen2013.0066