1,720,974 research outputs found
INTENSIVE ROTATlONAL GRAZlNG
No full textSheaffer, Craig C.. (1993). INTENSIVE ROTATlONAL GRAZlNG. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/118749
Preference of Twelve Perennial Grass Pasture Mixtures Under Horse Grazing
Full text linkMartinson, Krishona L.; Sheaffer, Craig C.. (2013). Preference of Twelve Perennial Grass Pasture Mixtures Under Horse Grazing. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/204387
The Interaction of Grazing Muzzle Use and Grass Species on Forage Intake of Horses
Full text linkGlunk, Emily C.; Sheaffer, Craig C.; Hathaway, Marcia R.; Martinson, Krishona L.. (2013). The Interaction of Grazing Muzzle Use and Grass Species on Forage Intake of Horses. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/204386
FORAGE LEGUMES: Clovers, Birdsfoot Trefoil, Cicer Milkvetch, Crownvetch and Alfalfa
No full textSheaffer, Craig, C.; Ehlke, Nancy J.; Albrecht, Kenneth A.; Jungers, Jacob M.; Goplen, Jared J.. (2018). FORAGE LEGUMES: Clovers, Birdsfoot Trefoil, Cicer Milkvetch, Crownvetch and Alfalfa. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/219227
Risk Management Guide for Organic Producers
No full textThis book is made up of 14 chapters.In this publication, we focus on production risks for crops that include cultural practices, variety selection, and management of pests and diseases. This publication will help growers who are contemplating adopting organic production practices understand the risks that are associated with organic production and make choices that will minimize those risks. Additionally, this guide will also be beneficial to all organic producers, regardless of their level of experience.This manual was funded by the USDA Risk Management Agency (RMA) through a Research
Partnership Grant titled “Tools for Managing Pest and Environmental Risks to Organic Crops in the Upper Midwest”.Moncada, Kristine M.; Sheaffer, Craig C.. (2010). Risk Management Guide for Organic Producers. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/123677
Environmental Guide to Alfalfa Growth, Water Use, and Yield in Minnesota
No full text20 pagesAlfalfa (Medicago sativa L. ) is an important agricultural crop in Minnesot a, where it is grown to enhance soil conservation, for green manure, for forage, and as a cash crop. Minnesota is now the third leading alfalfa producing state with 7 percent of the national acreage (2.0 million acres). The current value of the Minnesota alfalfa crop is estimated at $11 million.
Alfalfa is cal led the queen of the forages because of it s longevity, high yield, and high nutritive value, It is grown over a wide range of 1atitudes fromthe tropics to the Canadian provinces. The ability of alfalfa to adapt to arid and humid environments and to regions having temperatures as high as 120°F or as lowas -83°F has resulted in its worldwide distribution.
Four aspects of alfalfa in Minnesota are discussed in this bulletin: a bri ef history, growth characteristics, water relations, and the effect of climate on growth and yield. The info rmation cont ained in this bulletin comes from Minnesota-based studies and is for cultivars appropriate for the region. Research from other sources is also used to provide information not covered by Minnesota st udies.
This environmental guide is intended to be of value in the application of alfalfa responses to the environment. Some relations may be of only local application (e.g., calendar days), whereas others have much broader appli cation (e.g., growing degree days and potential evapotranspi ration). The relations developed in this guide can be used to estimate alfalfa maturity, potential production at various stages of development, water use and irrigation requirements, and yields.Sharratt, Brenton S.; Baker, Donald G.; Sheaffer, Craig C.. (1987). Environmental Guide to Alfalfa Growth, Water Use, and Yield in Minnesota. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/122929
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Lignin reduction in alfalfa (Medicago sativa) does not affect foliar disease resistance
No full textPoster presentation at the annual meeting of the American Phytopathological Society in August 2018.Disruptions in the lignin biosynthetic pathway have been shown to reduce disease resistance in
a number of crops. Recently, genetically modified alfalfa (Medicago sativa) varieties have been
marketed with reduced lignin and improved forage quality traits, including increased
digestibility by ruminants at later stages of plant maturity. The objective of this study was
to compare foliar disease resistance in three reference alfalfa varieties, 54R02, DKA43-22RR,
WL355.RR, and the reduced lignin variety, 54HVX41, to evaluate the effect of the reduced lignin
trait on foliar disease resistance. Alfalfa plants in research plots at three locations in
Minnesota were evaluated for percent defoliation caused by foliar pathogens at four maturity
stages; early bud, bud, early flower, and flowering; with natural inoculum. Spring black stem
and leaf spot, Leptosphaerulina leaf spot, and common leaf spot were observed from June through
September in all locations on all varieties. Summer black stem and leaf spot was most prevalent
in August on all varieties at one location. The amount of defoliation increased with maturity
stage for all varieties. When harvest was delayed until the flowering stage, moderate to severe
(32 to 64%) leaf loss occurred, depending on location. Alfalfa varieties did not differ in
percent defoliation at any maturity stage indicating that the reduced lignin trait did not
affect foliar disease resistance.Samac, Deborah A; Ao, Samadangla; Dornbusch, Melinda R; Grev, Amanda M; Wells, M Scott; Martinson, Krishona; Sheaffer, Craig C. (2018). Lignin reduction in alfalfa (Medicago sativa) does not affect foliar disease resistance. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/202991
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
- …
