Zobrazeno 1 - 9
of 9
pro vyhledávání: '"A. K. M. El-Nahal"'
Publikováno v:
Deutsche Entomologische Zeitschrift. 26:321-327
Population studies on nine cicadellid species were carried out throughout 1974 at Giza, Egypt, using a modified light trap and sweeping net. These species, arranged descendingly according to their abundance in light trap catches were: Cicadulina bipu
Autor:
A. K. M. El Nahal
Publikováno v:
Journal of the Science of Food and Agriculture. 4:517-522
Autor:
A. K. M. El Nahal
Publikováno v:
Journal of the Science of Food and Agriculture. 5:369-373
Autor:
A. K. M. El Nahal
Publikováno v:
Bulletin of Entomological Research. 44:651-656
The direct action of reduced pressures, in the absence of any fumigant, on C. oryzae and C. granaria have been investigated in glass chambers of about 1 litre capacity. C. oryzae is sufficiently sensitive to make the direct effect of reducing the pre
Autor:
A. K. M. El Nahal
Publikováno v:
Journal of the Science of Food and Agriculture. 5:205-208
The penetration of hydrogen cyanide into bags of wheat of different moisture contents has been determined. Three methods of fumigation have been used : sustained-vacuum fumigation, vacuum fumigation with simultaneous admission of air and fumigant, an
Autor:
A. K. M. El Nahal
Publikováno v:
Bulletin of Entomological Research. 44:641-650
Wheat of three moisture contents was fumigated with ethylene oxide, methyl bromide and hydrogen cyanide. Both chemical and biological assays were used to follow the changing distribution of the fumigant when applied with sustained vacuum, in a vacuum
Publikováno v:
International Journal of Tropical Insect Science. 8:177-179
Experiments were carried out to study the effect of sublethal doses of gamma radiation (10-100 krad) on fecundity, longevity and sterility of adults of Silotroga cerealella. The results indicate that fecundity of females decreased as the dosage incre
Publikováno v:
International Journal of Tropical Insect Science. 9:27-29
The effect of light on the development of the angoumois grain moth, Sitotroga cerealella, was studied. Three different light conditions, i.e. continuous light (LL), continuous darkness (DD) and antural illumination (LD), were used. Eggs bred under LL
Publikováno v:
International Journal of Tropical Insect Science. 8:327-329
The susceptibility of the different stages of Sitotroga cerealella (Olivier) to gamma radiation was studied. The stages arranged in a descending order according to the values of gamma radiation LD 50 are: adults (190.100 krad) for females and 183.200