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Imidazolinone Herbicides Improve Restoration Of Great Plains Grasslands, Robert A. Masters, Scott Nissen, Roch E. Gaussoin, Daniel Beran, Robert Stougaard
Imidazolinone Herbicides Improve Restoration Of Great Plains Grasslands, Robert A. Masters, Scott Nissen, Roch E. Gaussoin, Daniel Beran, Robert Stougaard
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The productivity and native species diversity of Great Plains grasslands have been substantially reduced by past management that facilitated the establishment of invasive exotic weeds and displacement of native species. Management strategies are needed to rapidly restore the productive capacity and biological diversity of these degraded grasslands. Critically important phases of the grassland restoration process are the reintroduction and establishment of native species. Weed interference is the primary constraint to successful establishment of native plants. The goal of our research is to develop strategies that use multiple technologies, including herbicides, to expedite grassland revegetation with native grasses and forbs. Imidazolinon …
Leafy Spurge (Euphorbia Esula) Genotype Affects Gall Midge (Spurgia Esulae) Establishment, Rodney G. Lym, Scott Nissen, Martha Rowe, Donald J. Lee, Robert A. Masters
Leafy Spurge (Euphorbia Esula) Genotype Affects Gall Midge (Spurgia Esulae) Establishment, Rodney G. Lym, Scott Nissen, Martha Rowe, Donald J. Lee, Robert A. Masters
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Greenhouse cage studies were conducted to determine the influence of shoot morphology and genetic variation on establishment of Spurgia sulae gall midge on seven leafy spurge genotypes. The genotypes were collected from South Dakota, North Dakota, Nebraska, Montana, Wyoming, Manitoba, and Austria. Genotypes from South Dakota and Nebraska were most susceptible to gall formation and had the highest larvae survival, while the genotypes from Montana and Manitoba were most resistant. Morphological characteristics of the leafy spurge stem tips, such as stem diameter leaf, length, width, and area did not correlate with gall formation or larvae survival. Chloroplast DNA restriction fragment …