PERFORMANCE LOSSES CAUSED BY WHITE FLIES IN YUCCA CULTIVATION
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Whiteflies population (Aleurotrachelus socialis, Bemisia tuberculata, Traileurodes variabais) causes leaf yellowing deformation of the growing plants and a sooty mold which grows in the sugar excretion of the insect. In the Espinal (Tolima) area where whiteflies populations are high throughout the year several varieties have been tested for resistance and economic damage. The treated plants presented lower grades of infestation and higher yields, compared with the untreated ones. Yield losses due to whiteflies depend on the variety.
Lines
% yield loss
H 305 - 122
79.6
CMC 57
76.7
VEN 218
68.0
CMC 40
52.0
N MEX 59
33.6
The yield depression depends on the duration of the attack, presenting a significant negative correlation (r = 0.90). The yield loss of 79.6% in the hybrid 305 - 122 would represent a loss of $97.350. If farmers apply insecticides every 3 months the root yield production would be higher. Even though chemical control has been effective in preventing or reducing the damage caused by whiteflies, it is generally agreed that the most efficient method of control would be to develop material that is resistant to whiteflies.
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- ANA MILENA CAICEDO, ANTHONY C. BELLOTTI, Entomofauna associated with the asparagus crop in the Cauca department of Colombia , Revista Colombiana de Entomología: Vol. 28 No. 1 (2002)
- MARÍA FERNANDO BARBERENA, ANTHONY C. BELLOTTI, Parasitism of two strains of Heterorhabditis bacteriophora on the subterranean burrowing bug Cyrtomenus bergi (Hemiptera: Cydnidae) , Revista Colombiana de Entomología: Vol. 24 No. 1 (1998)
- JOSE A. CASTILLO, ANTHONY C. BELLOTTI, DIAGNOSTIC CHARACTERS OF FOUR SPECIES OF FLOURY LICE (PSEUDOCOCCIDAE) IN YUCA CROPS (Manihot esculenta) AND OBSERVATIONS ON SOME OF THEIR NATURAL ENEMIES , Revista Colombiana de Entomología: Vol. 16 No. 2 (1990)
- BERNARDO ARIAS-V., ANTHONY C. BELLOTTI, ECOLOGICAL AND MANAGEMENT ASPECTS OF Cyrtomenus bergi Froeschner, SMALLPOX BUG IN THE YUCCA CULTIVATION (Maniot esculenta Crantz) , Revista Colombiana de Entomología: Vol. 11 No. 2 (1985)
- CLAUDIA MARÍA HOLGUÍN-A, ARTURO CARABALI, ANTHONY C. BELLOTTI, Intrinsic rate of population increase of Aleurotrachelus socialis (Hemiptera:Aleyrodidae) in cassava Manihot esculenta , Revista Colombiana de Entomología: Vol. 32 No. 2 (2006)
- ANA MILENA CAICEDO-V., ANTHONY C. BELLOTTI, Survey of native entomogenous nematodes associated with Cyrtonemus bergi Froeschner (Hemiptera: Cydnidae) in eight Colombian sites , Revista Colombiana de Entomología: Vol. 22 No. 1 (1996)
- NANCY SORAYA CARREJO-G., ANTHONY C. BELLOTTI, RANULFO GONZALEZ-O., EVALUATION OF SOME DETERMINING FACTORS OF THE EFFICIENCY OF Cleothera notata (Col: Coccinellidae) AS A PREDATOR OF THE FLOUR LICE OF YUCCA Phenacoccus herreni (Hom: Pseudococcidae) , Revista Colombiana de Entomología: Vol. 17 No. 1 (1991)
- ANA MILENA CAICEDO-V., ANTHONY C. BELLOTTI, Evaluation of the potencial of the entomogenous nematod Steinernema Carpocapsae Weiser (Rhabditida: Steinernematidae) for the control of Cyrtomenus bergi Froeschner (Hemiptera: Cydnidae) under laboratory condicionts , Revista Colombiana de Entomología: Vol. 20 No. 4 (1994)
- JORGE E. PEÑA, ANTHONY C. BELLOTTI, STUDIES ON THE FLIES OF THE STEM AND FRUIT OF YUCCA Anastrepha pickeli and Anastrepha manihoti , Revista Colombiana de Entomología: Vol. 3 No. 3-4 (1977)
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