Occurrence of Bemisia Argentifolii on Chrysanthemums in Northern Tanzania
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چکیده
منابع مشابه
Effects of temperature and dietary sucrose concentration on respiration in the silverleaf whitefly, Bemisia argentifolii.
A system consisting of a flow-through chamber connected to a commercial infrared gas analysis system was developed to measure homopteran respiration during feeding. Using this system, respiration rates of 202 and 206 µmol CO(2) h(-1) g(-1) (4.96 and 5.04 ml CO(2) h(-1) g(-1)) were determined for whiteflies and cotton aphids, respectively, at 25 degrees C on diets containing 15% sucrose. These r...
متن کاملEffects of in vitro passage of Beauveria bassiana on virulence to Bemisia argentifolii.
Effects of repeated in vitro subculture on the virulence and morphological characteristics of entomopathogenic fungi appear to vary considerably among isolates and species. Some reports indicate a loss of pathogenicity in isolates of Beauveria bassiana, Metarhizium anisopliae, Nomuraea rileyi, Paecilomyces farinosus, and Verticillium lecanii (Kawakami, 1960; Schaerffenberg, 1964; Nagaich, 1973;...
متن کاملDistribution and Sampling of Bemisia argentifolii (Homoptera: Aleyrodidae) and Eretmocerus eremicus (Hymenoptera: Aphelinidae) on Cantaloupe Vines
Studies were conducted to examine the spatial distribution of immature Bemisia argentifolii Bellows & Perring and immature Eretmocerus eremicus Rose & Zolnerowich on cantaloupe vines and to develop efÞcient sampling plans. More B. argentifolii eggs were found on the 3rd leaf from the terminal of a cantaloupe vine than on any other leaf. The density of whiteßy nymphs peaked at leaf position 8, w...
متن کاملEffect of cotton nitrogen fertilization on Bemisia argentifolii populations and honeydew production
The impact of nitrogen fertilization on cotton plants, Gossypium hirsutum L., silverleaf whitefly, Bemisia argentifolii Bellows & Perring, population dynamics and honeydew production were investigated in the field at Riverside, California, USA. Treatments were soil applications of 0, 112, 168 and 224 kg nitrogen per hectare, and a soil application of 112 kg of nitrogen plus a foliar application...
متن کاملThe nymphal-adult molt of the silverleaf whitefly (Bemisia argentifolii): Timing, regulation, and progress.
The developmental progress of silverleaf whitefly (Bemisia argentifolii) 3rd instars and 4th instar/pharate adults was monitored using a tracking system that had been designed to identify synchronous individuals in another species of whitefly, the greenhouse whitefly, Trialeurodes vaporariorum. When reared on greenbean under conditions of LD 16:8 and a temperature of 26 +/- 2 degrees C, the bod...
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ژورنال
عنوان ژورنال: Journal of Plant Protection Research
سال: 2008
ISSN: 1899-007X,1427-4345
DOI: 10.2478/v10045-008-0003-z