Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: KerryByrnes3 Document Number: D09163
Notes:
Kerry J. Byrnes Collection, title in spanish: "Adelante Hacia El Pasado" movilizando el sector privado peruano por la fundacion de estacion experimental agricola (fundexa): Impedimentos c;aves y opciones para accion.
17 pages, via online journal, The greatest challenge now facing agricultural science is not how to increase production overall but how to enable resource-poor farmers to produce more.
The transfer-of-technology (TOT) model of agricultural research is part of the normal professionalism of agricultural scientists. In this model, scientists largely determine research priorities, develop technologies in controlled conditions, and then hand them over to agricultural extension to transfer to farmers. Although strong structures and incentives sustain this normal professionalism, many now recognise the challenge of its bad fit with the needs and conditions of hundreds of millions of resource-poor farm (RPF) families. In response to this problem, the TOT model has been adapted and extended through multi-disciplinary farming systems research (FSR) and on-farm trials. These responses retain power in the hands of scientists. Information is obtained from farmers and processed and analysed in order to identify what might be good for them. A missing element is methods to encourage and enable resource-poor farmers themselves to meet and work out what they need and want.
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.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 199 Document Number: D09935
Notes:
NCR-90 Collection, From Document D09933, "Department of agricultural journalism University of Wisconsin-Madison: Faculty and graduate student research, 1993". Pages 4-5.
Harris, Lynn (author), Keim, Kathryn S. (author), Liddil, Audrey (author), Ruby, Mary Lou (author), Stimpson, Janice (author), and University of Idaho, Boise Center
Format:
Conference paper
Publication Date:
1994
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 97 Document Number: C07897
Notes:
James F. Evans Collection, Ham, Mimeographed, 1994. 1 p. Presented at the Society for Nutrition Education, Portland, OR, July 16-20, 1994., To develop a nutrition education program that will result in behavior change, one must know the current food intake behavior and nutrition knowledge base of the consumer. This descriptive study assessed the current nutrition knowledge base of consumers concerning fiber food sources and fiber-health relationships and food intake reflective of fiber sources. A survey was developed, piloted and mailed to 1,003 randomly selected households using a modified Dillman method. The survey included knowledge questions and food frequency and demographic information. A total of 466 usable surveys (52% usable return rate) and analysis of variance, form the basis of the following results. Sixty-six percent of the respondents were female and 34% were male. The majority were over the age of 30 (88%) and 66% had more than a high school education. Consumers with vocational training and come college education (mean +or- SD, 4.1 +or- 1.6) had a significantly higher knowledge score (score range 0-7) concerning food sources of fiber and fiber-health relationships than those who had a high school education (3.9 +or- 1.6) (p < 0.05). There was a trend of more fiber containing foods being consumed as the age of the consumer increased (p=0.057). When looking at food intake by food group, females consumed significantly more fruits and vegetables than males (p<0.05). From this information it should appear that extension nutrition about food sources of fiber and fiber-health relationships should target younger, non-college educated consumers and especially men.
18 pages, Recent studies cast doubt on the ability of abstract experiments to predict decision-making in the field. Thus, scholars have argued for more ‘realism’ by introducing context to field experiments. Yet, such realism may work against the induced values of monetary incentives in economic experiments. It is an open question whether contextual framing works best with or without inducing values, through methods such as the use of monetary incentives. Using a sample of 146 German farmers, we compare experimentally the predictive power of a framed lottery in an agricultural context vs. using an abstract version. For one half of the sample, lotteries are incentivised; for the other half, they are hypothetical. Although risk preferences differ between treatments, all four lottery tasks correlate poorly with farmers’ real-world use of risk management instruments such as harvest or hail insurance. Subjects who start with an agricultural framing are willing to take significantly greater risks in the lotteries. More generally, our findings cast doubt on the ability of lottery tasks to predict risk-taking in the field.
Jensen, Helen H. (author), Schroeter, John R. (author), and Associate Professor of Economics and Head of the Food and Nutrition Policy Division, Center for Agricultural and Rural Development, Iowa State University; Associate Professor of Economics, Iowa State University
Format:
Conference paper
Publication Date:
1989-03
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 74 Document Number: C03730
Notes:
James F. Evans Collection, Ames, IA : Center for Agricultural and Rural Development, Iowa State University, 1989. 21 p. (CARD Working Paper 89-WP43) Paper presented at the NEC-63 Research Conference on Commodity Advertising and Promotion; 1989 February 22-23; Orlando, FL
7 pages, via Online journal, Hair fescue (Festuca filiformis) is a tuft-forming perennial grass that reduces yields in lowbush blueberry (Vaccinium angustifolium) fields. Nonbearing year foramsulfuron applications suppress hair fescue, but there is interest in increasing suppression through foramsulfuron use in conjunction with fall-applied herbicides. The objective of this research was to determine the main and interactive effects of fall-bearing year herbicide applications and spring-nonbearing year foramsulfuron applications on hair fescue. The experiment was a 5 × 2 factorial arrangement of fall-bearing year herbicide (none, terbacil, pronamide, glufosinate, dichlobenil) and spring-nonbearing year foramsulfuron application (0, 35 g·ha−1) arranged in a randomized complete block design at lowbush blueberry fields in Portapique and Stewiacke, Nova Scotia, Canada. Spring-nonbearing year foramsulfuron applications did not reduce total tuft density or consistently reduce flowering tuft density, flowering tuft inflorescence number, or flowering tuft seed production. Fall-bearing year pronamide applications reduced hair fescue density for the 2-year production cycle, although additional bearing year density reductions occurred when pronamide was followed by spring-nonbearing year foramsulfuron applications at Stewiacke. Fall-bearing year dichlobenil applications reduced total and flowering tuft density at each site, although reductions in flowering tuft inflorescence number and seed production were most consistent when followed by spring-nonbearing year foramsulfuron applications at Stewiacke. Suppression extended into the bearing year at each site, and dichlobenil should be examined further for hair fescue control. Fall-bearing year glufosinate applications reduced hair fescue total tuft density at each site and flowering tuft density and flowering tuft seed production at Stewiacke. Fall-bearing year glufosinate applications followed by spring-nonbearing year foramsulfuron applications also reduced nonbearing year flowering tuft inflorescence number and bearing year hair fescue seedling density at Stewiacke, indicating that this treatment may reduce hair fescue seedling recruitment at some sites. Fall-bearing year terbacil applications did not suppress hair fescue and are not recommended for hair fescue management in lowbush blueberry.
Hauser, Michael (author), Lindtner, Mara (author), Prehsler, Sarah (author), Probst, Lorenz (author), and University of Natural Resources and Life Sciences, Austria
Format:
Online journal article
Publication Date:
2016-07-30
Published:
Austria: Science Direct
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 109 Document Number: D10962
9 pages, via online journal, Farmers who engage in farmer participatory research (FPR) change their established social roles in households and communities. As such, comprehension of farmers’ role transitions is important to understand the extrinsic and intrinsic factors impeding or supporting the uptake and use of FPR by farmers. The existing FPR literature, however, does not address such role transitions. In this study, we analyzed farmers’ experiences with FPR and underlying role transitions in a commercial organic agriculture project in western Uganda. We drew on quantitative and qualitative data from interviews, group discussions, and observations involving farmers and extension workers. Our results suggest extrinsic and intrinsic factors affect farmers’ self-conception, influencing their willingness to participate in FPR. The level of alignment between the self-conception and the anticipated role determines farmers’ decision regarding participation in FPR and affects their response pattern. Farmers’ response pattern and individual set of inhibitors and facilitators lead to the experience of role insufficiency or role mastery, which is crucial for farmers’ continuation or termination of on-farm experiments. Understanding and facilitating role transitions is, therefore, essential for sustaining on-farm experiments, which complements current technical FPR training.
Keefe, Dennis R. (author / University of Georgia College of Agriculture Experiment Stations) and University of Georgia College of Agriculture Experiment Stations
Format:
Report
Publication Date:
1967
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 44 Document Number: B05348
Notes:
Evans; Table of contents and Introduction, Athens, Georgia: University of Georgia, Agriculture Experiment Station, June 1967. 68 p. (Southern Cooperative Series Bulletin 68-3319).
Van Syckle, Calla (author), Brough Jr., Owen L. (author), and Visiting Professor of Family Economics at Florida State University.
Professor and Agricultural Economist at the State College of Washington
Format:
Journal article
Publication Date:
1958-01
Published:
USA: American Marketing Association
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 164 Document Number: D08237
4 pages., Via journal article., Learning by doing plays a critical role in a learner’s conceptual understanding. By actively engaging with a concept, students gain experience and develop an enduring understanding of the concept. The concept of pollen viability is a critical component in the field of plant breeding and can be used to explain various aspects of pollen quality. An inquiry activity was designed to expose undergraduate students in a horticulture course to the concept of pollen viability and its application. The entire class was tasked with collaborating to identify an in vitro germination medium optimized to germinate plumeria (Plumeria rubra) pollen. To determine optimum sucrose and pH concentrations of the medium, student groups were assigned treatments of pollen from two plumeria cultivars that were germinated in Brewbaker and Kwack media of differing sucrose and pH concentrations. Students calculated the percentage of germinated pollen and assessed pollen tube integrity and used these variables as evidence of an optimized medium. Although undergraduates were engaged in authentic research practices during the inquiry activity, lack of time and resources impeded completion of the activity. However, students were exposed to methods and instrumentation directly related to evaluating pollen viability. Moreover, they were exposed to the basic practice of pollen quality assessment that they can use to carry out investigations on pollen fertility. In addition, insight was gained to improve the inquiry activity in the future. Now, well-informed modifications to the inquiry activity can be made to pilot this activity in a formal horticulture laboratory section.
16 pages, via online journal article, This meta-analytic study reviewed experimental studies that examined the effects of message framing on public engagement with climate change. We included 10 studies that used self-reported measures of climate-related attitudes and behaviors, with 26 comparison pairs. The results suggested that message framing generally has a positive effect on individuals’ engagement with climate change and its two sub-categories – behavioral intentions and support for climate policy. More specifically, we found message frames that emphasize the environmental, economic, and moral dimensions of climate change have a small-to-medium size impact on individuals’ engagement with climate change. In contrast, message frames around public health implications or geographical identity barely influence individuals’ engagement with this issue. We discussed the implications on strategic communications of climate change.
12 pages, via Online journal, Corn (Zea mays) grown in the southern Piedmont requires 200 to 280 kg nitrogen (N) ha−1 annually and requires up to 0.87 cm of water per day, making groundwater systems susceptible to nitrate (NO3−) leaching. A perennial white clover (Trifolium repens L.) living mulch (LM) system may reduce NO3-N leaching by using legume N to replace mineral N, though little information is available on such a system in the southern Piedmont. Therefore, a HYDRUS-1D model was used to simulate water and NO3-N flux in three cover crop systems. Cereal rye (Secale cereal L.) (CR), crimson clover (Trifolium incarnatum L.) (CC), and a white clover LM were fertilized with 280, 168, and 56 kg N ha−1. The HYDRUS-1D model was calibrated and validated with observed water contents and NO3-N data that were collected over two years. Water and NO3-N flux models were created for each treatment and evaluated using coefficient of determination, percentage bias, and index of agreement, and showed good agreement to observed data. Nitrate leaching below 1 m in 2015/2016 was 23.5, 12.7, and 21.4 kg ha−1 for the CC, LM, and CR treatments, respectively, but was less than 1 kg ha−1 for all treatments in 2016/2017 due to prolonged drought. Differences in leached NO3-N among treatments were attributed to variation in mineral N application rate and NO3-N uptake by cover crops. Overall, results suggest that the use of a perennial LM system may reduce NO3-N leaching when compared to annual CC and CR cover crop systems.
