2 pages, For years agroecologists have warned that industrial agri-culture became too narrow ecologically, highly dependent on outside inputs, and extremely vulnerable to insect pests, diseases, climate change and now as demonstrated by the COVID19 pandemic prone to a complete shut down by unforeseen crisis.Like never before, COVID19 has revealed how closely linked human, animal and ecological health are. As a power-ful systemic approach, agroecology reveals that the way we practice agriculture can provide opportunities for improv-ing environmental and human health, but if done wrongly, agriculture can cause major risks to health.
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.
A version of this article appeared in print on December 13,2015, in the News section of the Chicago Tribune with the headline "Man vs nature.", Online from Chicago Tribune. 12 pafwa.
Via UI Library subscription., Study aimed to provide tools to improve the quality of journalism regarding ethical issues that concern our relationship with nonhuman animals. Explored the role of news media (two years of coverage by the New York Times newspaper, U.S., and El Pais, Spain) in constructing perceptions of nonhumans used for food and their treatment. Results showed that both newspapers played a major role in concealing the nonhumans' cruel treatment, but a distinction can be drawn between the crude speciesism of El Pais and the camouflaged, more deceptive style of the New York Times.
Mungai, Ndungi wa (author) and Seis, Colin (author)
Format:
Book chapter
Publication Date:
2017
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D08789
Notes:
Pages 223-237 in Gordon, Iain J. Prins, Herbert H.T. Squire, Geoff R. (eds.), Food production and nature conservation: conflicts and solutions. United Kingdom: Routledge, London. 348 pages.
