منابع مشابه
Integrated Management of Leafy Spurge-Infested Rangeland
Leafy spurge is an invasive Eurasian weed on pastures and rangeland in North America where it reduces grass forage production. Our objective was to determine the effects of multispecies grazing combined with Aphthona flea beetles on leafy spurge-infested rangeland. On two westernNorth Dakota sitesdivided into four25to79-hapastures, two grazingduration treatmentswere applied: season-long with 7 ...
متن کاملDetection of Flowering Leafy Spurge With Satellite Multispectral Imagery
The distribution and abundance of flowering leafy spurge (Euphorbia esula L.) can be determined with hyperspectral remote sensing, but the availability of hyperspectral sensors is limited. Hence, the Landsat 7 Enhanced Thematic Mapper Plus (ETMþ) and System Pour d’Observation de la Terre (SPOT) 4 imagery were acquired to test the ability of these sensors to detect leafy spurge. The green:red ba...
متن کاملTraining lambs to be weed eaters: Studies with leafy spurge
The objective of the study was to determine if exposure of young lambs to leafy spurge (Euphorbia e&u L.) would increase the consumption of this plant. Orphan lambs were exposed to leafy spurge from birth to 11 weeks of age as a water soluble extract mixed with milk replacer and as freshly harvested plants. Ewereared lambs were exposed to leafy spurge by grazing them on a leafy spurge-infested ...
متن کاملPolyamines, auxins and organogenesis in leafy spurge (Euphorbia esula L.)
Canaline and canavanine (inhibitors of polyamine biosynthesis) effects on root and shoot formation were determined in vitro for etiolated hypocotyl segments of leafy spurge (Euphorbia esula L.). Canaline (an ornithine analogue) at 10 to 100 μmol/L inhibited root and shoot formation. The simultaneous application of putrescine did not reverse canaline-induced inhibition of root formation. Ornithi...
متن کاملComparison leafy spurge of sheep and goat preferences for
The objective of these studies was to compare preference for leafy spurge (Euphorbiu es& L.) by sheep and goats. Study 1 was a choice test that paired leafy spurge with either arrowleaf balsamroot (Balsamorhiza sagittata (Pursh)Nutt.) or crested wheatgrass (Agropyron cristatum (L.)Gaertn.) for a 30 minute feeding period. Study 2 consisted of 3 grazing trials on spurgeinfested pastures. Differen...
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ژورنال
عنوان ژورنال: Rangeland Ecology & Management
سال: 2006
ISSN: 1550-7424
DOI: 10.2111/05-203r.1