Found 80 results

Sort by: Author Title Type [ Year  (Desc)]
Mutisya DL, Khamala CPM, El Banhawy EM, Kariuki CW, Ragwa S. "Cassava Variety Tolerance to Spider Mite Attack in Relation to Leaf Cyanide Level.". 2013.Website
Khamala CP. Insect and disease control.; 2013.
PROF. KHAMALA CANUTEPM. "Relationships between Plasmodium falciparum transmission by vector populations and the incidence of severe disease at mine sites on the Kenya Coast.". In: Am. J. Trop. Med.Hyp., 52 (3): 201-206. Opuscula Mathematica,; 1995.
PROF. KHAMALA CANUTEPM. "Biochemical identification of Phlebotomus (Larroussius) pedifer and Phlebotomus (Larroussius) elegonensis.". In: Bioch system. & ecol., 16 (1/8): 655-659. Opuscula Mathematica,; 1988.sf07230719.pdf
Khamala CP. Control of Bedbugs in Kenya.; 1987.
PROF. KHAMALA CANUTEPM. "Mermithidae (Nematoda) infection of the aquatic stages of Simulium (Edwardsellum) from the Nine river systems in Kenya.". In: Proc. Helminthol. Soc. Wash., 54 (1): 156-157. Opuscula Mathematica,; 1987.
PROF. KHAMALA CANUTEPM. "Charasterization of Simulium (Edwardsellum) damnosum s.l. populations from six river systems in Kenya by cellulose acetate eletate electrophoresis.". In: Trans.R. Soc.Trop. Med & Hyg. 80: 914-922. Opuscula Mathematica,; 1986.
PROF. KHAMALA CANUTEPM. "Occurrence of Simulium (Edwardsellum) damnosu s.l. Diptera: Simuliidae in nine river system in Kenya.". In: Journal of Medical Entomology, 23:111-112. Opuscula Mathematica,; 1986.
PROF. KHAMALA CANUTEPM. "Establishment of Pine Woolly Aphid Pineus pini (L) (Homoptera: Adelgidae) on some host trees.". In: Kenya J. Sci. Tech.3:61-68. Opuscula Mathematica,; 1982. Abstract
PROF. KHAMALA CANUTEPM. "Sampling techniques for Populations of Pine Woolly Aphid Pineus pini (Gmelin) (Homoptera).". In: Kenya Sci. & Tech., 3:9-18. Opuscula Mathematica,; 1982. Abstract
Khamala CP, Okeyo-Owour JB. "Pigeonpea (Cajanus cajan) varietal response to insect podborer infestation in Kenya.". 1980. AbstractPigeonpea (Cajanus cajan) varietal response to insect podborer infestation in Kenya.

In field trials with (a) determinate and (b) indeterminate pigeon pea cv., pod damage by Heliothis armigera, Pardasena virgulana and Melanagromyza obtusa and seed yield losses ranged from 37% and 23% in an early-flowering cv. of (b) to 64% and 52% in a late-flowering cv. of (b), resp

"Population dynamics of pine woolly aphid, Pineus pini (Gmelin) (Hemiptera: Adelgidae), in Kenya.". 1980. AbstractPopulation 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. Generally, there was a marked decrease in population during the three months of heavy rainfall in March to May and a significant increase during dry weather from August to October. This was followed by a slight decrease in the rate of population build-up, until the long rains in April again resulted in another population collapse. Nine species of predatory insects were identified, and population fluctuations of the most common of these, Exochomus spp., was studied. Predators seemed to remove about 12% of the aphid population. Other mortality factors included heat and crawler dispersion. The greatest mortality occurred early in the life-cycle and was mainly due to eggs and crawlers being washed off the host-tree by rain.

Mailu AM, Rose DJW, Khamala CPM. "Sequential surveys for the pine woolly aphid, Pineus pini (L.) Homoptera: Adelgidae in Kenya.". 1980. AbstractWebsite

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 aphids per centimetre of shoot length, the percentage of twigs on individual trees with mats of aphid wool, and the amount of tree surface covered with aphid wool. Field procedures for making measurements are given, and the survey procedures are presented.

PROF. KHAMALA CANUTEPM. "Resistance of cowpea varieties to the legume bud Thrip Megalurothrips sjostedti (tryb.) (Thysanoptera: Trhripidae) in Kenya.". In: Kenya J. Sci.& Tech. Series B., 2: 3-7. Opuscula Mathematica,; 1980. Abstract
Mailu AM, Khamala CPM, Rose DJW. "Evaluation of pine woolly aphid damage to Pinus patula and its effect on yield in Kenya.". 1978. AbstractWebsite

It is reported in this further paper on the damage caused by Pineus pini (Gmel.) to Pinus patula in Kenya [see preceding abstract] that reduction in the elongation of the needles and stems occurs only after crown damage and aphid infestation become extreme. Lighter infestations are reflected in slight reductions of needle length. Damage to the trees and consequent losses of wood volume are most severe under warm dry conditions. Severely stunted needles caused by aphid feeding result in loss of half the tree yield. Infested stands may incur up to 5% economic loss in wood volume. These relations are, however, affected by site factors such as rainfall and altitude. With stands of P. patula at suitable sites. Pineus pini need not pose an important threat to plantations in Kenya.

Khamala CPM, Okeyo-Owour JB. "Studies on insect podborer infestations on Cajanus cajan (L.) Millsp. (pigeon pea) under different insecticidal spraying regimes in the Kenya Highlands.". 1978. AbstractWebsite

Three insecticides were tested in sprays in the field in Kenya in 1976 for the control of podboring insects, especially the noctuids Pardasena virgulana (Mab.) and Heliothis armigera (Hb.) and the agromyzid Melanagromyza obtusa (Mall.), on pigeon pea (Cajanus cajan). DDT was applied twice at a concentration of 25% diluted to 180 ml/10 litres water, 40% dimethoate was applied at 30 ml/18 litres, and 35% endosulfan at 102 ml/18 litres water; these quantities were applied to 450 m2. The percentage pod damage and (in brackets) percentage seed damage totalled 30.4 (18.3) for DDT, 24.7 (13.5) for dimethoate, and 32.4 (17.3) for endosulfan, as compared with 47.9 (24.4) for no treatment.

Khamala CPM, Castelino JB. Energy sources in E. Africa.; 1976.
Khamala CP, Dingle H. What tropical Africa can contribute to ecology.; 1974.

UoN Websites Search