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Download Ipomoea calobra - Australian Weeds and Livestock
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Transcript
Ipomoea calobra Common name: Weir vine Palatability to Livestock: Moderate. Toxicity to Goats: Moderate. Toxicity to Other Species: Potentially toxic to sheep and cattle, and horses. Poisonous Principle: Indole alkaloids. Effects: Signs and symptoms; . Arched rump, . Tucked-up, . Staggering. . Flowering occurs after rain throughout spring and summer. . This plant is addictive, and stock seek it out after grazing once only. . Sheep show signs of poisoning after five weeks and horses after two weeks. . The resultant brain damage causes stock to appear blind and walk into things. . There is increased urinary frequency and output. . Recovery is possible in early stages, but there will be permanent damage after continued consumption. . Death is from starvation and thirst, and no treatment is available. . Only graze very occasionally to control vine. . Smoke from campfires burning this wood reportedly causes hallucinations in humans. . Only known in the Roma/St George area of Queensland. Health and Production Problems; . Chronic weight loss. Treatment; . See Vet. Integrated Control Strategy: . Use herbicides, try 2 4-D. Comments: . A perennial trailing vine with large alternate, round or heart shaped leaves up to over ten cms across, on long stems. . Large woody roots and watery tubers grow about forty cms below the ground surface. . Trumpet shaped flowers are large, pink to mauve, about eight cms across, and grow in clusters. . Seed pods are round, two cms across, and contain four large seeds. . The plant dies back to its tuber in autumn, and regrows from this tuber or seed, in spring. Picture: Ipomoea calobra florabase calm.wa.gov.au Further Reading: . AGDEX 647. Herbicide Control. . Dowling and McKenzie. Poisonous Plants. 1993 . Everist. Poisonous Plants of Australia. 1983 . Henry, Hall, Jordan, Milson, Schefe and Silcock. Pasture Plants of Southern Inland Queensland. 1995 . Parsons and Cuthbertson. Noxious Plants of Australia. 1992. . Simmonds, Holst and Bourke. Palatability and Potential Toxicity of Australian Weeds to Goats. 2000 Information included in this Info Sheet was obtained from the source data, and no responsibility will be accepted by the compiler.