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    2. A matter of life and death

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    Collection:
    Agricultural Communications Documentation Center (ACDC)
    Contributers:
    Byrnes, Francis C. (author / International Agricultural Development Service) and International Agricultural Development Service
    Format:
    Journal article
    Publication Date:
    unknown
    Published:
    International
    Location:
    Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 46 Document Number: B05599
    Notes:
    Francis C. Byrnes Collection

    3. ACE and research: The difference between "mere press agent" and strategic partner

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    Collection:
    Agricultural Communications Documentation Center (ACDC)
    Contributers:
    North, Elizabeth (author) and Mississippi State University Association for Communication Excellence
    Format:
    Commentary
    Publication Date:
    2019
    Published:
    United States: New Prairie Press
    Location:
    Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 15 Document Number: D10427
    Journal Title:
    Journal of Applied Communications
    Journal Title Details:
    103(2)
    Notes:
    4 pages., Via online journal., ACE President Elizabeth Gregory North comments on JAC as evidence of the strong research tradition that is alive and well in ACE.

    4. Acting like an algorithm: digital farming platforms and the trajectories they (need not) lock-in

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    Collection:
    Agricultural Communications Documentation Center (ACDC)
    Contributers:
    Carolan, Michael (author)
    Format:
    Journal article
    Publication Date:
    2020-12-01
    Published:
    USA: Springer
    Location:
    Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 202 Document Number: D12047
    Journal Title:
    Agriculture and Human Values
    Journal Title Details:
    Vol. 37, issue 4
    Notes:
    13 pages, via Online Journal, This paper contributes to our understanding of farm data value chains with assistance from 54 semi-structured interviews and field notes from participant observations. Methodologically, it includes individuals, such as farmers, who hold well-known positionalities within digital agriculture spaces—platforms that include precision farming techniques, farm equipment built on machine learning architecture and algorithms, and robotics—while also including less visible elements and practices. The actors interviewed and materialities and performances observed thus came from spaces and places inhabited by, for example, farmers, crop scientists, statisticians, programmers, and senior leadership in firms located in the U.S. and Canada. The stability of “the” artifacts followed for this project proved challenging, which led to me rethinking how to approach the subject conceptually. The paper is animated by a posthumanist commitment, drawing heavily from assemblage thinking and critical data scholarship coming out of Science and Technology Studies. The argument’s understanding of “chains” therefore lies on an alternative conceptual plane relative to most commodity chain scholarship. To speak of a data value chain is to foreground an orchestrating set of relations among humans, non-humans, products, spaces, places, and practices. The paper’s principle contribution involves interrogating lock-in tendencies at different “points” along the digital farm platform assemblage while pushing for a varied understanding of governance depending on the roles of the actors and actants involved.

    5. An Alternative Healing Method for Grafted Tomato Transplants: The Effect of Light Exclusion and Substrate Temperature on Plant Survival and Growth

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    Collection:
    Agricultural Communications Documentation Center (ACDC)
    Contributers:
    Lang, Kristine M. (author), Nair, Ajay (author), and Litvin, Alexander G. (author)
    Format:
    Journal article
    Publication Date:
    2020-12-01
    Published:
    USA: American Society for Horticultural Science
    Location:
    Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 202 Document Number: D12051
    Journal Title:
    Hort Technology
    Journal Title Details:
    Vol. 30, issue 6
    Notes:
    8 pages, via Online journal, The use of tomato (Solanum lycopersicum) grafting is gaining traction across the United States, but small-scale growers face the challenge of creating optimum postgrafting healing conditions. The practice of blocking light for a period of 2 to 4 days while maintaining high humidity is commonly recommended for healing grafted tomato transplants; however, research is exploring alternatives to this practice. The present study investigated a low-input healing method for grafted tomato transplants with a specific focus on light and the use of propagation heat mats to regulate substrate and healing chamber air temperatures during the 7-day healing process. We hypothesized that 4 days of light exclusion and the use of propagation heat mats would improve grafted tomato transplant survival and growth. ‘Cherokee Purple’ was used as the scion and ‘RST-04-106-T’ was used as the rootstock. The whole plot factor was heat [propagation mats set at 80 °F (heat) or no propagation mat (no heat)] and the subplot factor was light exclusion (0, 4, or 6 days of dark). The highest survival rate among treatments was 97% in 0 days of dark with no heat treatment; survival decreased to 84% in 4 and 6 days of dark with no heat treatments. The plant survival rate was 96% with 0 days of dark and heat treatment; however, the survival rates were 63% and 45% for the 4- and 6-day dark treatments, respectively. The scion stem diameter was largest for transplants grown in 0 days of dark, but there was no difference in stem diameter due to heat treatments. There were no differences among scion or rootstock biomasses due to heat or light treatments. These results demonstrate that propagation mats set at 80 °F to regulate the substrate temperature were detrimental to grafted transplant survival under extended periods of light exclusion. However, this finding creates the basis to explore lower levels of substrate temperature modification. Our work also indicates that light exclusion may not be necessary for healing grafted tomato plants regardless of root-zone temperature treatments. Future work should examine the interactions of various substrate and air temperatures under full light conditions and their effects on grafted tomato transplant survival and growth. This work contributes to the ongoing research of how to optimize low-input healing methods that may be readily adopted by small-scale tomato growers.

    7. Characterizing viewpoints of scholars in agricultural communications as they relate to research themes in the journal of applied communications: a q methodological study

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    Collection:
    Agricultural Communications Documentation Center (ACDC)
    Contributers:
    Parrella, Jean A. (author), Spence, Jessica R. (author), Redwine, Tobin (author), and Leggette, Holli R. (author)
    Format:
    Journal article
    Publication Date:
    2021-10
    Published:
    United States: New Prairie Press
    Location:
    Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D12404
    Journal Title:
    Journal of Applied Communications
    Journal Title Details:
    Vol. 105, Iss. 3
    Notes:
    27 pages, Research in agricultural communications is not guided by a national research agenda. Therefore, the substantial body of research produced from scholars working in the discipline represents scattered efforts. We conducted a content analysis of journal articles published in the Journal of Applied Communications between 2000 and 2019 to identify the research themes that establish the discipline’s scholarly base. Through an examination of n = 259 journal articles, we identified N = 27 research themes, the most prevalent of which included agriculture and media relations/practices (f = 30; % = 11.58), public perceptions/understanding of agriculture and natural resources (f = 25; % = 9.65), and agricultural communications academic programs and curricula (f = 21; % = 8.11). Then, we used Q methodology to identify viewpoints of agricultural communications scholars (e.g., faculty, graduate students; n = 45) as they relate to perceptions about the importance of research. We identified four dominant viewpoints of scholars in agricultural communications: Message Framing Influencers, Extension-Focused Scholars and Practitioners, Discipline-Conscious Researchers, and Tech-Savvy Scholars. Together, these viewpoints explained 59.43% of the study variance. Although participants who represented each of these groups had unique perspectives, participants generally agreed that public perceptions/understanding of agriculture and natural resources and crisis communications in agricultural communications were important research themes. Likewise, they generally agreed that the role of agricultural communications professional organizations, agricultural communications efforts during historical events, and agritourism were not important research themes.

    8. Commercial kefir products assessed for label accuracy of microbial composition and density

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    Collection:
    Agricultural Communications Documentation Center (ACDC)
    Contributers:
    Metras, B.N. (author), Holle, M.J. (author), Parker, V.J. (author), Miller, M.J. (author), and Swanson, K.S. (author)
    Format:
    Journal article
    Publication Date:
    2021-05-12
    Published:
    USA: Elsevier
    Location:
    Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 207 Document Number: D13037
    Notes:
    6 pages, Kefirs are fermented beverages containing yeast and bacteria produced by the fermentation of water or milk with kefir grains. Because microorganism density may influence a product's health benefits, label accuracy regarding viable bacterial density and taxonomy of fermented foods is important. In this study, the microbiota of 5 commercial kefir products were measured quantitatively using standard plating techniques and characterized using high-resolution, long-read 16S rRNA gene amplicon sequencing. To enumerate viable lactic acid bacteria, 2 lots of each product were plated on de Man, Rogosa and Sharpe agar upon opening and following 14 d and incubated under anaerobic and aerobic conditions. Results revealed that 66% of products with a guaranteed count of colony-forming units per gram overstated microorganism density by at least 1 log, with only product E exceeding 1 × 109 cfu/g. Sequencing results demonstrated moderate product label accuracy in regard to taxonomy, yet several products contained bacterial species above the minimum detectable threshold (0.001% relative abundance) that were not included on the labels (e.g., Streptococcus salivarius, Lactobacillus paracasei). Our results demonstrate a moderate level of labeling accuracy for commercial kefir products intended for human consumption. Regulatory agencies and consumers must continue to scrutinize these products and demand a higher level of accuracy and quality.