Results 241 to 250 of about 21,701 (266)

The Whiteflies in Egypt (Hemiptera: Aleyrodidae)

Acta Phytopathologica et Entomologica Hungarica, 2021
Whiteflies are the most important pests of economic crops in Egypt causing huge damage to them by their direct feeding, formation of sooty mold on plants and vectoring of plant viruses. An updated list of the 25 species of whiteflies (Hemiptera: Aleyrodidae) known to occur in Egypt and an identification key are provided.
Abd-Rabou, S., Evans, G. A.
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Whiteflies: Vectors, and victims (?), of geminiviruses

2001
Publisher Summary This chapter focuses on geminivirus insect–pathogen hypothesis. Most of viruses infecting plants rely on insects to move from one host to another. Some remain associated with the mouth parts and can be inoculated within seconds or minutes. Others are transmitted only several hours after acquisition.
Vivian Fridman, Henryk Czosnek, Galina Rubinstein, Murad Ghanim, Muhamad Zeidan, Shai Morin   +5 more
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Transmission by Whiteflies (Aleyrodidae)

1998
Whitefly-transmitted viruses, belonging to the family Geminiviridae (subgroup III Geminivirus),cause serious diseases in many crops, such as bean, cassava, cotton, tobacco and tomato. Their vector is Bemisia tabaci, a whitefly species commonly occurring in the tropics and subtropics.
Cees P. de Jager, Jeanne Dijkstra
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Whiteflies and Their Management

2016
This chapter focuses on integrated pest management for greenhouse whitefly on both vegetable and ornamental crops. The techniques for good greenhouse supervision, monitoring of whiteflies, biological controls, biopesticides, insect growth regulators, controlled atmosphere, and integrated management of whiteflies are discussed.
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Whitefly preference-performance relationships

1992
For the past two and a half years I have conducted a series of experiments with the greenhouse whitefly (Trialeurodes vaporariorum (Westwood)), to ascertain to what extent and at what rate it can adapt to various host plants. This adaptation was measured by monitoring the changes in egg laying, survivorship and development time of a given population on
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A novel melon flexivirus transmitted by whitefly

Archives of Virology, 2004
In recent years, a viral disease on melon plants has become a serious problem in Brazil. Symptoms were principally yellowing and mottling on older leaves. Long filamentous virus particles, resembling those of carlaviruses, were seen in symptomatic leaves.
Elliot W. Kitajima, J. E. Cardoso, A. C. de Ávila, Tatsuya Nagata, Alice K. Inoue-Nagata, T.-Y. Tian, D. M. T. Alves   +6 more
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Probing and feeding characteristics of the greenhouse whitefly in association with host‐plant acceptance and whitefly strains

Entomologia Experimentalis et Applicata, 1998
AbstractHost‐plant and whitefly strain effects and their interactions on the probing and sap feeding of the greenhouse whitefly, Trialeurodes vaporariorum (Westwood), have been investigated in this study using the DC‐EPG (Electrical Penetration Graph) technique.
Lei, H., Tjallingii, W.F., van Lenteren, J.C.   +2 more
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Tropical Whitefly IPM Project

2006
The Tropical Whitefly IPM Project (TWFP) is an initiative of the Systemwide IPM Programme of the Consultative Group on International Agricultural Research (CGIAR), financed by the Department for International Development (DFID) of the United Kingdom, the Danish International Development Agency (DANIDA), the United States Department of Agriculture (USDA)
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Whiteflies on tomato crops in Portugal*

EPPO Bulletin, 2002
In Portugal during the 1960/1980s, there was intensive development of vegetable crop production, in particular protected crops, of which tomato was the most important. The main producing regions now are Ribatejo e Oeste, Alentejo and Algarve. Tomato presents extensive phytosanitary problems, being host to a wide range of pests, including the whiteflies
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Bayberry Whitefly Control on Lemons, 1981

Insecticide and Acaricide Tests, 1984
Abstract Plots were located in Corona, Calif, and were three rows of trees; evaluations came from the middle row. Tree spacing was 20 by 20 ft. Experimental design was completely randomized. Three compounds were tested on five application schedules.
G. P. Walker, G. E. Carman, J. L. Pappas
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