Comparing Apples to Apples: An Iowa Perspective on Apples and Local Food Systems

This paper looks at Iowa\u27s once thriving apple industry from a food system perspective

Swine Producer Appraisal of the Community Assessment Model for Odor Dispersion (CAM)

The community assessment model (CAM) for odor dispersion is a tool to assist in the siting of swine production facilities. CAM considers the size and type of a swine production system, local historical weather conditions, and odor control implementation. It predicts the number of hours of exposure to various levels of odor, by month, for each receptor in a given community. A follow-up survey of all CAM users since 2005 was conducted. The survey was designed to provide: 1) formative feedback for programming adjustments to improve Extension efficiency, usability, and reduce costs; and 2) summative feedback used to provide an indirect baseline assessment of the broader impact that CAM has had on reducing odor-related conflict. For the majority of producers who used CAM, the potential impacts to their neighbors factored heavily into decisions. CAM was believed to be very important to the siting process. A high majority (95%) of producers clearly understood the model results. Over half communicated these results to their neighbors where a third of these were considered positive interactions. Overall, for producers who went on to build at sites that were modeled there was a significant improvement in neighbor relations. CAM continues to evolve as a tool, with the addition of more refined odor dispersion parameters and the ability to include cattle and poultry. The state of Iowa has passed legislation that would, when funding is made available, integrate the use of CAM into odor management policy

The Cover Crop Seed Industry: An Indiana Case Study

Winter cover crops are plants used to protect soils during the period between the harvest and establishment of cash crops such as corn and soybeans, effectively providing farm fields with perennial cover. The total cost of cover crops varies considerably from site to site and year to year, yet the single costliest aspect of using cover crops is the cost of seed. Seed cost also tends to be the most volatile component of the cost of cover crop use, subject to complex supply dynamics associated with producing viable seed, storage capacity, and unpredictable regional demand. We conducted a survey of seed dealers who sell cover crop seeds using the state of Indiana as a case study. The majority of the respondents believe that sales for cover crop seeds over the next five years in Indiana will increase. In response to this expected increased demand, seed dealers noted they intend to (in no particular order): increase contracted cover crop seed production and invest in seed handling and storage capacity; increase direct interaction with farmers; become more active with workshops and demonstration field days; and/or create marketing materials that specifically promote the soil health benefits of cover crops. The top three factors seed dealers believed would improve the Indiana cover crop seed market the most were: (1) financial incentives for cover crop use; (2) improved customer knowledge of cover crop management; and tied for (3) reduced seed production costs, and broader support of cover crop usage from commodity groups. The top three topics of publicly funded research most useful to the cover crop industry were: (1) understanding factors that influence farmer cover crop adoption; (2) cover crop impact on field profitability; and (3) understanding long-term soil benefits of cover crops. Seed dealers play a unique role in conservation practices such as cover crops, not just because they are often trusted facilitators of information and guidance, but also because their business actions strongly influence available conservation opportunities, management options, and direct cost to farmers. The respondents to the survey offered their opinions regarding a number of issues that would help their business viability in a sustainable way while promoting farmer adoption of cover crops and their long-term commitment to the practice

Perspectives of Extension Agents and Farmers Toward Multifunctional Agriculture in the United States Corn Belt

We surveyed the perspectives of farmers, crop professionals, and Extension agents and found that they have positive perspectives concerning multifunctional agriculture, including a positive effect of a nearby prairie to cropland productivity. The survey was conducted in central Iowa and included individuals predominantly from Iowa involved in commodity research and production. Our results are preliminary and provide a baseline for further research into the perspectives of change agents in the U.S. Corn Belt. They also provide insight into similarities among key links in the diffusion of innovation chain

Forest Change in the Driftless Area of the Midwest: From a Preferred to Undesirable Future

In the midwestern and eastern U.S., oaks (Quercus spp.) have been a dominant component of forests for at least the last 10,000 years, providing vital habitat for numerous wildlife and plant species that have adapted to oak forest conditions. However, the current state of these oak systems, in which there has been a general lack of successful oak regeneration and recruitment and an increase in the relative dominance of mesophytic species, may be nearing critical thresholds. If reached, restoring oak systems through natural regeneration and other methods, such as prescribed fire, may become especially challenging if not impossible. An understanding of spatial variation in oak dominance over time can inform and potentially improve the efficacy of intervention strategies. Using Public Land Survey and Forest Inventory and Analysis (FIA) inventories, we evaluated changes in the composition of timberland across ecoregional subsections in the Driftless Area of the Midwest at three time periods (pre-settlement 1800s, 1990s, and 2000s). We identified an overall decrease in oak dominance, and particularly dominance of the white oak (Quercus alba L., Q. macrocarpa Michx., and Q. bicolor Willd.) species group since the presettlement era, and an increase in other eastern soft hardwoods. Within the last 20 years, both the red oak (Q. rubra L., Q. ellipsoidalis E.J. Hill and Q. velutina Lam.) and white oak species groups decreased in dominance, with an increase in hard maple-basswood (A. saccharum Marsh., A. nigra L., and Tilia americana L.) species group dominance, indicating further mesophication of forests in the region. However, we found a notable decrease in hard maple-basswood relative dominance within the small diameter class across most of the regions within the last 10–20 years, with an increase in dominance of other, non-oak, species. Our findings complement qualitative evidence from interviews with natural resource professionals from the region and offer further information on the potential for forest conversion to ‘‘undesirable’’ forest conditions, as identified as a source of concern by some professionals. There was spatial variation in these trends, however, with some pronounced differences across adjacent state boundaries. The variation in forest change across state boundaries suggests the role of state-level socioeconomic and policy factors in affecting forest conditions, and thus the potential for a targeted and timely approach to promoting preferred pathways of change