Goetting, Marsha A. (author), Pourroy, Raeann (author), and Goetting: Extension Family Economics Specialist, Department of Agricultural Economics and Economics, Montana State University, Bozeman, MT; Pourroy: Extension Agent, Pondera County Extension Office, Conrad, MT
Format:
Journal article
Publication Date:
1991
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 86 Document Number: C05631
15 pages., Securing the adoption of scalable agro-educational information and communication technology (ICT) solutions by farmers remains one of the international development community’s most elusive goals – in part due to two key gaps in the data: (1) limited comparisons of competing knowledge-delivery methods, and (2) few to no follow-ups on long-term knowledge retention and solution adoption. Addressing both of these gaps, this follow-up study measures farmer knowledge retention and solution adoption two years after being trained on an improved postharvest bean storage method in northern Mozambique. The results found animated-video knowledge delivery at least as effective as a traditional extension approach for knowledge retention (97.9%) and solution adoption (89%). As animated video can more cost-effectively reach the widest – even geographically isolated – populations, it readily complements extension services and international development community efforts to secure knowledge transfer and recipient buy-in for innovations. Implications and future research for adult learning are also discussed.
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.
Lehtola, Carol (author), Miller, Greg (author), and Miller: Department of Agricultural Education and Studies, Iowa State University; Lehtola: Institute of Agricultural Medicine, University of Iowa
Format:
Journal article
Publication Date:
1994-06
Published:
USA: National Association of College and Teachers of Agriculture, Urbana, IL
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 97 Document Number: C07860
distance education, James F. Evans Collection, Distance education is being utilized more often by colleges of agriculture to meet the educational needs of a more diverse clientele. The college of Agriculture at Iowa State University utilizes a variety of communications media to deliver distance education programming, but relies most heavily on videotapes. In this article, the authors synthesize research related to effective teaching through one-way instructional television, and test two hypotheses derived from this research. The instructional manipulation is described, and its influence on achievement across four cognitive levels in addition to learner satisfaction are tested.
