Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Z. T. Dabrowski"'
Autor:
C. C. A. Macfoy, Z. T. Dabrowski
Publikováno v:
Zeitschrift für Angewandte Entomologie. 97:202-209
The resistance of cowpea cultivars to Aphis craccivora Koch was studied in the field, screenhouse and laboratory. In the fields the rate of population growth was significantly higher on Vita 1 and TVu 946 than on TVu 310 and 408-p-2. Observations of
Autor:
Z. T. Dabrowski, H. F. van Emden
Publikováno v:
International Journal of Tropical Insect Science. 15:605-620
Species diversity of animals and plants is relevant to pest management in very different ways. Plant diversity provides sources of biologically active natural products and of genes for plant resistance. Animal diversity is involved in both harmful an
Publikováno v:
International Journal of Tropical Insect Science. 12:249-261
Regular field surveys were carried out in 2 week intervals in 1986 and 1987 to determine population density, species composition, migration activity of Cicadulina leafhoppers and their infectivity with maize streak virus (MSV) in different ecological
Publikováno v:
Journal für Verbraucherschutz und Lebensmittelsicherheit. 3:21-21
The results on the effect ofMON810maize plants on somenontarget arthropod species evaluated under greenhouse conditions and themethodology of the first planned large scale field experiment on monitoring in Poland will be presented for critical commen
Autor:
Z. T. Dabrowski, E. L. Kidiavai
Publikováno v:
International Journal of Tropical Insect Science. 4:119-126
Field observations in western Kenya on 100 promising lines of sorghum showed that there were at least 6 relationships affecting plant colonisation and damage by Chilo partellus (Swinh.). Non-preferece for oviposition occurred in 11 lines. Feeding on
Publikováno v:
Bulletin of Entomological Research. 77:01-08
Significant differences in nymphal development period and fecundity were observed between five populations of Cicadulina mbila (Naudé) and C. triangula Ruppel from three climatic zones in Nigeria: rain forest (Ibadan), southern part of Sudan savanna
Publikováno v:
Journal of Chemical Ecology. 2:221-230
A standard essential oil mixture (SEOM) was formulated containing volatile compounds in the relative proportions found in the essential oil of the foliage of “Citation,” a strawberry cultivar relatively resistant toTetranychus urticae. Other mixt
Autor:
Z. T. Dabrowski
Publikováno v:
Journal of Applied Entomology. 103:489-496
Cicadulina ghaurii has a wide distribution in the rain forest zone but was also recorded from Guinea savanna and middle altitude ecologies in Nigeria and the Republic of Cameroon. The proportion of C. ghaurii in the total Cicadulina population was ra
Autor:
B. Bielak, Z. T. Dabrowski
Publikováno v:
International Journal of Tropical Insect Science. 6:473-478
Distinct differences in Panonychus ulmi population densities on various apple cultivars have been observed under natural field infestations. Various laboratory techniques may be used to determine the differences in susceptibility or resistance to P.
Publikováno v:
International Journal of Tropical Insect Science. 4:141-145
The development of a mass-rearing technique of Mantea testulalis by the ICIPE has allowed us to start extensive work on cowpea resistance to the legume pod-borer. A preliminary field observation showed that the cowpea resistance is on the low level.