Biological Control Agents

Volume II - 1971

4Biological Control of Central and South American Weeds in Australia
11The biological control of weeds with insects in the United States
29Weed vulnerablility to damage by biological control agents
40Beneficial insect or plant pest? The regulatory agency's dilemma
49Conflict of interest
56Selection and weed biological control organisms
63Some aspects on the biological control of aquatic weeds
74Competition and coexistence in phytophagous insects attacking the heads of Carduus nutans L.
82Biological control of weeds in India; a review of introductions and current investigations of natural enemies
89Progress on the biological control of Lantana camara in East Africa and discussion of problems raised by the unexpected reaction of some of the more promising insects to Sesamum indicum
95Recent work on the assessment of the biological control potential of the Chondrilla organisms
103Insects associated with Halogeton and Salsola in Pakistan with notes on the biology, ecology, and host specificity of the important enemies
114The powdery mildews potential biological control agents of Skeleton weed, Chondrilla juncea L.
121A Biological Control Agent for Rumex crispus L.
127The host specialisation of three insects and a mite living on Chondrilla juncea L.
134Host specialization in Chondrilla fungi
140The Effects on Reproduction of Removal of Plant Parts by Natural or Artificial Means
145Enzyme polymorphisms and the differentiation of sibling species
151A comparison of strategies for screening biological control organisms
161Metzneria paucipunctella Zel. (Gelechiidae, Lepidoptera): A potential insect for biological control of Centaurea stoebe L. in Canada
166Modern outlooks of biological control of weed plants in the U.S.S.R. and the international phytophagous exchange
173Distribution and natural enemies of Dalmatian toadflax (Linaria dalmatica Mill.) and Mediterranean sage (Salvia aethiopis L.) in Yugoslavia
179Preliminary studies of a strain of the waterhyacinth mite from Argentina
185Topical colloquium
204Unstructured colloquium