Zobrazeno 1 - 5
of 5
pro vyhledávání: '"R. R. Iss‐Hak"'
Autor:
R. R. Iss‐Hak, M. I. Abdel‐Megeed
Publikováno v:
Zeitschrift für Angewandte Entomologie. 78:56-59
The peak of the number of egg-masses of the cotton leafworm, Spodoptera littoralis (Boisd.) appeared three times during the inspection period of 1973 season, i.e. the 3rd week of June, 3rd week of July and in mid August. The third generation was the
Publikováno v:
Zeitschrift für Angewandte Entomologie. 78:181-185
The study deals with the relationships between three species of predator insects: Coccinella undecimpunctata Reiche, Scymnus interruptus Goeze, and Chrysopa carnea Stephens, which seem to be highly correlated with the occurance of Aphis gossypii Glov
Autor:
R. R. Iss‐Hak, M. I. Abdel‐Megeed
Publikováno v:
Zeitschrift für Angewandte Entomologie. 78:59-62
The populations of early instar larvae of the cotton leafworm Spodoptera littoralis (Boisd.) on certain cotton plants differed from one region to another. The upper region harboured the highest population (about 80 %), only 15 and 5 % were observed o
Autor:
R. R. Iss‐Hak, M. M. Hosny
Publikováno v:
Zeitschrift für Angewandte Entomologie. 79:11-17
The average number of eggmasses per feddan collected, in previous years, from both the “Delta Region” and the “Whole Country”, as well as the averages of three thermal factors, as recorded during a certain period from 11th February to 10th Ap
Effects of insect growth regulators on the hairy rose beetle, Tropinota squalida (Col., Scarabeidae)
Publikováno v:
Journal of Applied Entomology. 129:142-148
Saponin extract from alfalfa roots, azadirachtin from the neem seed oil, synthetic ecdysteroid agonist RH-2485, and the juvenoid hydroprene disturb the development and reproduction of Tropinota squalida. Feeding beetles on diets containing 750 p.p.m.