Author : Claudia L. Powers Evans
Publisher :
Page : 84 pages
File Size : 45,24 MB
Release : 1980
Category : Tansy ragwort
ISBN :
[PDF] Integrated Control Of Tansy Ragwort Senecio Jacobaea L eBook
Integrated Control Of Tansy Ragwort Senecio Jacobaea L Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of Integrated Control Of Tansy Ragwort Senecio Jacobaea L book. This book definitely worth reading, it is an incredibly well-written.
Biological Control of Tansy Ragwort (Senecio Jacobaea L.) on a Disturbed Coastal Prairie in Del Norte County, California
Author : Lorraine J. Holden
Publisher :
Page : 224 pages
File Size : 18,36 MB
Release : 1989
Category : Tansy ragwort
ISBN :
Ecology and Management of Tansy Ragwort (Senecio Jacobaea L.)
Author : Jim Jacobs
Publisher :
Page : 13 pages
File Size : 20,86 MB
Release : 2009
Category : Invasive plants
ISBN :
Tansy Ragwort, Senecio Jacobaea L.
Author : L. C. Burrill
Publisher :
Page : 8 pages
File Size : 40,2 MB
Release : 1994
Category : Tansy ragwort
ISBN :
Tansy Ragwort (Senecio Jacobaea).
Author :
Publisher :
Page : 2 pages
File Size : 34,77 MB
Release : 2012
Category : Tansy ragwort
ISBN :
Tansy Ragwort (Senecio Jacobaea L.) Habitat Variations in the State of Oregon
Author : Ruth E. Burroughs Lefevre
Publisher :
Page : 182 pages
File Size : 29,74 MB
Release : 1989
Category : Agricultural pests
ISBN :
Tansy Ragwort, Senecio Jacobaea
Author :
Publisher :
Page : 2 pages
File Size : 22,48 MB
Release : 2011*
Category : Livestock poisoning plants
ISBN :
Ragwort, Senecio Jacobaea L.
Author : Victoria. Vermin and Noxious Weeds Destruction Board
Publisher :
Page : 2 pages
File Size : 42,84 MB
Release : 1976
Category : Senecio jacobaea
ISBN : 9780724112838
Disk and Ray Achene Development and Germination Characteristics of Tansy Ragwort
Author : Ann Louise Baker
Publisher :
Page : 132 pages
File Size : 34,5 MB
Release : 1982
Category : Senecio
ISBN :
The Relative Impact of Single Vs. Multiple Agents on the Biological Control of Tansy Ragwort (Senecio Jacobaea)
Author : Rosalind R. James
Publisher :
Page : 134 pages
File Size : 19,68 MB
Release : 1989
Category : Arctiidae
ISBN :
Field experiments were done to test the relative effectiveness of single and multiple biological control agents in reducing weed populations using two insects, the cinnabar moth, Tvria iacobaeae (L.), and the ragwort flea beetle, Lonqitarsus iacobaeae (Waterhouse). These two insects were released for biological control of the biennial weed tansy ragwort. Together, they had a greater impact on ragwort, at the experimental site, than either alone. Artificial defoliation simulated the cinnabar moth feeding behavior of defoliating and defoliating bolting plants in the early summer. Flea beetle larvae and adults were sampled to determine their seasonality and the plant parts and stages they most frequently fed on. Larvae fed internally in the leaf petioles and roots from October to July. Adults fed on leaves year round with their greatest activity occurring in late summer and fall. Flea beetles alone reduced vegetative plant densities by about 95%, but only with simulated cinnabar feeding did they affect flowering plants, reducing regrowth of leaves and flowers. Cinnabar moths alone had an effect only on flower and seed production. This combination of herbivores with little nicheoverlap, spread out attack over time, plant stages, and parts, and yielded stronger host population depression than either insect yielded alone.