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Seedling emergence patterns of triazine-susceptible and triazine-resistant Solanum nigrum plants were studied in the field at Wageningen, the Netherla...

Atrazine-resistant or -susceptible biotypes of Senecio vulgaris and Amaranthus retroflexus were compared with regard to DM production, resource alloca...

A possible explanation for low success rates when introducing natural enemies to new regions for biological control of insect pests is that they fail ...

Aphid clones that feed on the same plant species for many generations often develop biotypes specifically adapted to the particular host-plant. Such b...

Triazine-susceptible and resistant biotypes of S. vulgaris, collected from the same field in Salinas, California, were compared to determine whether r...

Experiments were conducted (1) to determine whether resistance to MCPA would subside in a population of Ranunculus acris subsp. acris after ending a 3...

In an attempt to improve the biological control of O. stricta in South Africa, a stock of D. opuntiae was obtained from O. stricta in Australia during...

Eighteen biotypes collected from different sites were grown in a common environment and seeds from these biotypes were grown in four experiments in co...

Results of recent research on Dactylopius opuntiae, a biological control agent for cactus weeds (Opuntia spp.) in South Africa and elsewhere, challeng...

A comprehensive set of demographic values measured under partly controlled conditions for an inbred Australian strain of Cydia pomonella (L.) is prese...