International Symposia on Biological Control of Weeds

Volume II - 1971

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