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The shoot-fly larvae overwintering in cut and grazed grass in Northern Ireland were studied over a five-year period. The commonest species found were ...
Read moreMusca vetustissima Wlk., although native to Australia, currently breeds in the dung of exotic stock animals. Biological control could therefore be aim...
Read moreThe effects of two levels of the insecticides carbaryl (0.11 and 1.13 g/m2) and DDT (0.56 and 5.60 g/m2) on the litter fauna of a closed canopy stand ...
Read moreThe temperature requirements of five aphid species (Acyrthosiphon pisum (Harris), Aphis craccivora Koch, Brevicoryne brassicae(L.). Macrosiphum avenae...
Read moreIn investigations in New Zealand, percentage estimates of the total mortality of Pieris rapae (L.) due to ground-living arthropod predators obtained b...
Read moreIn competition experiments the suppression of Early Hybrid by F1 Selma was not eliminated by increasing nutrient supply levels up to several times the...
Read moreCompetition between the 2 strains was studied in pot experiments. It was found that F1 Selma (FS) suppressed Early Hybrid (EH) in mixed culture, altho...
Read moreA new field technique to estimate photosynthesis is described. It relies on describing direct and diffused light fluxes within the canopy, and photosy...
Read moreAt higher soil water contents, chloride uptake by onion roots was greater, and the zones of depletion extended further. Models of ion transport were d...
Read moreBy means of factor analysis of concentrations of Cu and Zn in soil and of Cu, Zn, Fe and Mn in vegetation, the relationships between biogeochemistry, ...
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