Journal article

Publication year: 1996

Pages: 153-156

Journal: Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz

Volume number: 69

Issue number: 7

ISSN: 0340-7330

DOI Link: https://doi.org/10.1007/BF01906805

Publisher: Blackwell

Abstract: 

Population dynamics of Bemisia argentifolii in the south west of the Dominican Republic

For monitoring whitefly populations, yellow sticky traps were placed in 1993/1994 on 11 sites in two valleys in the south west of the Dominican Republic. Additional countings of immature whiteflyes in untreated parts of field rials were evaluated. Trying different forms of traps showed that flat vertical traps gave better results than flat horizontal or cylindrical ones. The highest catching rates were obtained in eggplant fields as this culture remains long without any pesticide treatment on the field. The dependence of whitefly outbreaks (and yeald losses) on watersupply for the plants could be proofed. The movement in the field seems to be very low. Population dynamics in the field depend mainly on proliferation and mortality. Migration seems to have almost no influence. B. argentifolii was always permanently present on noncultivated lands, but even spots host weeds never reached the population density of cultivated lands. Also parasitoids were always present on noncultivated lands. After the establishment of irrigation, host plants were available and whiteflies could multiply the whole year. Since 1990 planting of host plants is prohibited from March till September in one of the two investigated valleys. This measure seems to be successfull.

Harvard Citation style: Tappertzhofen, S. (1996) Population dynamics of Bemisia argentifolii in the south west of the Dominican Republic, Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz, 69(7), pp. 153-156. https://doi.org/10.1007/BF01906805

APA Citation style: Tappertzhofen, S. (1996). Population dynamics of Bemisia argentifolii in the south west of the Dominican Republic. Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz. 69(7), 153-156. https://doi.org/10.1007/BF01906805