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The effects of 2 levels of infestation by Phytoptus chondrillae G. Can. (Aceria chondrillae) on inflorescence growth and reproductive capacity of Chon...
Read moreGrowth of P. stratiotes at the southern-most tip of the man-made Volta Lake in Ghana was measured over 1 year. Biomass and relative growth rate remain...
Read moreThe results of experiments conducted during 1968 showed that the presence of weed within the crop provides a suitable habitat for some of the ground-l...
Read moreThe value of a temperature integrator was demonstrated when determining the development of the parasite Aphidius matricariae Hal. on the host Myzus pe...
Read moreA simulation model is described which demonstrates the role of parasitic Hymenoptera in influencing the numbers of the aphid Sitobion avenae on cereal...
Read morePopulation models of host-parasite interactions are extended to include insecticide application acting in a variety of ways on pest hosts and/or their...
Read moreIn order to investigate the effect of insect recolonization on the insecticide-induced resurgence of crop pests, a modified Lotka-Volterra predator-pr...
Read moreEstablishing biological control agents in the field is a major step in any classical biocontrol programme, yet there are few general guidelines to hel...
Read moreThe cereal aphid outbreaks of 1979 (Metopolophium dirhodum) and 1980 (Sitobion avenae) and their lower populations in 1981, in Norfolk, eastern Englan...
Read moreThe importance of niche overlap between parasitoids in the single- or multiple-introduction problem in biological control is exhibited by mathematical...
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