Global ETD Search
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Showing 1 to 9 of 9 for “"mealybug"”.
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Experiments on a mealybug infesting apple and a mealybug infesting catalpa
1. The developing time of the mealybug from catalpa exceeded that of the mealybug from apple. 2. In no experiment did cross-breeding of the mealybug from apple and from catalpa take place. 3. Each mealybug was able to live successfully on both hosts. 4. The parasites, Clausenua purpurea Ishii, from …
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Physiological Studies on the Nutrition of the Mealybug Pseudococcus Citri(risso) (Homoptera: Coccidae)
Made available in DSpace on 2015-05-12T17:15:36Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0005968.PDF: 3490853 bytes, checksum: ed1073246dc176d575fe223b964c34a0 (MD5) Previous issue date: 1953
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Survey of different mealybug species and attending ants and their management in Virginia vineyards
Mealybugs (Order Hemiptera: Superfamily Coccoidea) represent a persistent problem in grape-growing regions globally, with a notable increase in infestations in recent times. The current study investigates the species composition and seasonal dynamics of mealybugs in vineyards. Pseudococcus …
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Ecological and behavioral factors associated with monitoring and managing pink hibiscus mealybug (Hemiptera: Pseudococcidae) in the southern US
The pink hibiscus mealybug (PHM), Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae) was investigated with regard to damage caused to hibiscus by feeding, dispersal of nymphs, evaluation of management tactics, and the use of sex pheromone based monitoring in southern Florida from 2005 to …
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Effects of Silicon -Based Fertilizer Applications on the Development and Reproduction of Insect Pests Associated With Greenhouse -Grown Crops
… phloem-feeding insect pests such as citrus mealybug and greenhouse whitefly. Although, silicon may function as a protective or mechanical barrier associated with increased epidermal leaf thickness/toughness and strengthening cell walls in certain plant species, these effects are not …
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Documentation of grapevine leafroll-associated viruses in wine grape varieties and native grape species in Virginia, and examination of the movement of grapevine leafroll disease to develop management strategies
… sugar accumulation and compromising skin color. Mealybugs are vectors of grapevine leafroll-associated viruses (GLRaVs). A statewide survey of commercial and wild grapevines in Virginia was conducted during 2009 through 2011. Also, vector management options were tested in two field studies. …
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The effect of post-harvest ammonium sulphate application, planting time and sucker size on plant growth and yield of queen pineapple, ananas comosus
… had no significant effect on levels of mealybug, Dymicoccus brevipes and red mite, Dolichotetranychus floridanus infestation. Post-harvest (NH4)2SO4 application influenced the percentage of P and K in leaves in the May and August planting. Sucker size had an influence on N percentage in …
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Ecosystem services provided by native New Zealand plants in vineyards
… a natural enemy of another vineyard pest: mealybug (Pseudococcus longispinus (Targioni-Tozzetti)). The floral resources of matagouri (Discaria toumatou Raoul), the dominant native plant species within remnant shrubland of the Waipara valley, enhanced the fitness of Diadegma semiclausum …