Food insecurity and nutrition are two of the biggest challenges facing our society. Urban
agriculture can help address these challenges, though lack of awareness about opportunities for
engagement and degraded soils are two barriers that could prevent people from realizing the
benefits that these operations can provide. Soils in urban areas are often highly degraded due to
development activities and lack the structure and microbial life needed to sustain healthy,
productive plants. Many lifelong habits such as healthy eating and engagement in community
gardening are best established during young adulthood. Graduate school is a particularly unique
time period, as many students are living on their own for the first time with modest incomes and
some have young families that are particularly vulnerable to food insecurity. Consequently, the
first objective of this project was to identify which barriers, if any, Purdue graduate students face
when purchasing and consuming fresh produce and participating in local urban agriculture
initiatives as Purdue’s campus and much of the surrounding area are characterized as food deserts
by the USDA. We also sought to determine how the COVID-19 pandemic influenced food access
and motivations for healthy eating and community garden engagement. To answer these questions,
we distributed a voluntary 33 question online Qualtrics® survey to all Purdue graduate students
via mass email blast. Results indicate that many Purdue graduate students face individual and
structural barriers to accessing fresh fruits and vegetables. International respondents, in particular,
were particularly vulnerable to structural barriers. Not having access to a personal vehicle appears
to be the primary predictor of who was most vulnerable, especially during the pandemic. Results
also indicate that students are interested in participating in local urban agriculture initiatives, but
most are unaware of their existence. Students indicated that e-mails were the best method for
increasing awareness and engagement. The second objective of this study was to determine
whether leaf mold compost could improve the health and productivity of degraded urban soils. In
addition, we aimed to determine whether the leaf compost could better support a beneficial
microbial inoculant to further enhance crop productivity, as well as the extent to which plant
genotype moderates these beneficial plant-soil-microbial relationships. To answer these questions,
leaf compost was obtained from a local grower and applied to experimental plots at the Purdue
University Farm. Two tomato varieties, Wisconsin 55 and Corbarino, were inoculated with
Trichoderma harzianum T-22 or a sterile water control, and transplanted into the field trials.
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Survival following transplanting, vigor, disease ratings and the yield and quality of tomato fruit
were quantified over the course of two growing seasons. Results indicated that several measures
of soil health were significantly increased in compost-amended soils and the health and
productivity of tomato plants greatly improved. The microbial inoculant dramatically reduced
transplant stress, especially in Wisconsin 55. Other more subtle differences among the tomato
varieties indicated that urban agriculture systems could be improved through varietal selection.
These studies highlight the fact that graduate students are not immune to food insecurity and proper
nutrition and they are interested in connecting with urban agriculture initiatives to address these
challenges. Pairing of the two groups could prove to be a successful mutualistic symbiosis as
graduate students provide the enthusiasm and manpower that urban gardens need while urban
gardens offer access to low-cost fresh produce that many graduate students desire. Leaf mold
compost can aid in these initiatives by providing a cost-effective approach to improve the health
and productivity of urban soils and crops, while at the same time providing further benefits such
as reduced accumulation of valuable carbon sources in municipal landfills. Results like these
provide stark evidence that agriculture, particularly urban agriculture, can continue to improve
access to nutritious foods through green initiatives and innovations.
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/13342151 |
| Date | 15 December 2020 |
| Creators | Kyle David Richardville (9729146) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/thesis/Overcoming_Barriers_In_Urban_Agriculture_To_Promote_Healthy_Eating_On_College_Campuses/13342151 |
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