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Sequential surveys for the pine woolly aphid, Pineus pini (L.) Homoptera: Adelgidae in Kenya
Sequential survey procedures are described from Kenya for classifying the damage caused by the aphid Pineus pini (Gmel.) to Pinus patula. The criteria used are the degree of needle stunting caused by a given number of ...
Insect podborer infestations and their influence on developing pods and final seed yields by pigeonpea (Cajanus cajan) in Kenya.
In Kenya, 8 species of insects were found to be common borers into the developing pods of pigeon pea (Cajanus cajan), feeding on the developing seeds and reducing seed yield. They were Heliothis armigera (Hb.), Maruca ...
Establishment of pine woolly aphid, Pineus pini (Gmelin) (Adelgidae) on some host trees in Kenya
The establishment of Pineus pini (Gmel.) on 6 common species of pine in Kenya was examined in the laboratory in relation to possible causes for observed differences in the rates of infestation on different host species in ...
Mermithidae (Nematoda) infection of the aquatic stages of Simulium (Edwardsellum) from the Nine river systems in Kenya
Mermithid juveniles recovered from S. damnosum in Kenya were placed in the genus Agamomermis. Varying rates of infection by the mermithids from nine river systems were recorded between 1981 and 1983. In both the Isiukhu ...
Occurrence of Simulium (Edwardsellum) damnosum s.l. (Diptera: Simuliidae) in nine river systems in Kenya
Six river systems in Kenya were found to harbor Simulium damnosum Theobald s.l. Two CDC light traps, during 12-h overnight collections at the Isiukhu and Nzoia rivers, caught 3 and 116 adult S. damnosum s.l., respectively. ...
Population dynamics of pine woolly aphid, Pineus pini (Gmelin) (Hemiptera: Adelgidae), in Kenya
The population dynamics of Pineus pini (Gmel.) was examined in two locations in the Kenya Highlands where the mean annual precipitation ranges from 620 to 1400 mm. Variations in population densities were related to rainfall. ...