Farmers and food entrepreneurs are encouraged to enter direct and intermediated markets for value-added food products, but do not have information that they need to determine whether the markets are financially feasible for their operations. We conduct timed trials in a state-of-the-art regional shared-use food processing facility in the Northeast, and test production costs for two high-quality, safe, value-added frozen products: blueberries and spinach. We combine this with research on capital costs, field research on distribution costs and baseline per-unit revenues, and published research on potential market returns, and assess the conditions under which frozen produce sales can be a good business choice for farmers and food businesses in local and regional food markets. We develop a roadmap and a calculator tool that potential market entrants, extension agents, regional food business centers and other agricultural support providers can modify to reflect local and regional market conditions. The tool can help determine whether entering the frozen produce market is a good fit for a farm or food business. In general, we find that frozen regional blueberries have potential to generate a profitable return for medium-scale farmers with access to a shared-use facility, or farmer aggregators with the ability to invest in their own facilities. Frozen regional spinach is unlikely to generate a profitable return at the regional scale. Our results provide critical information to policy makers regarding the scale of production necessary to justify investments in regional shared-used kitchens. Results also suggest that policy makers should be cautious when encouraging farmers and food businesses to enter value-added markets, as there is significant potential for these markets to under-perform.

Fruit and vegetable growers in the US face tradeoffs and synergies between on-farm conservation and pre-harvest food safety as a result of economic considerations, regulatory concerns, and external pressure from other stakeholders. However, detailed data on the frequency and extent of these tradeoffs across US regions remain sparse. We designed and implemented a national grower survey for the 2018 crop year to address this gap. Based on 209 responses, we examined usage of pre-harvest food safety and conservation practices with a particular emphasis on managing animal intrusion into growing areas and maintaining wildlife habitat. We also analyzed associations between farm characteristics and the probability that growers used different on-farm food safety and conservation practices. We did not find a simple biophysical or socio-economic explanation for why some farms adopted specific practices over others. Instead, our findings suggest that the adoption of particular food safety practices is influenced by a complex assemblage of factors that include environmental context, supply chain pressures, cost considerations, and growers' perceptions of risk. A better understanding of the diverse tradeoffs and synergies that US produce growers face between on-farm conservation and pre-harvest food safety is critical for effective policy design.

The diversity and distribution of wild bees are dramatically changing due to habitat fragmentation, agricultural intensification and climate change. In cities, urban gardens are proposed ‘island’ habitats for bees offering floral and nesting resources. Yet, it is largely unclear how gardens play a role in changes in species diversity and distribution. This paper reports on the discovery of a bee species to our knowledge previously undocumented in the region of Berlin, Germany. We discovered Lasioglossum limbellum in a community garden created on concrete slabs of annual and perennial vegetation. As a cavity nester in soft rock cliffs—a natural habitat functionally not existent in urban areas—the life history of this species makes this discovery particularly interesting, and an opportunity to explore the role of urban gardens in biodiversity change. This report aims to spur future research, reporting and discussion on the changes in diversity and distribution of wild bees specifically in urban areas.

Adoption of cover crops in arid agroecosystems has been slow due to concerns regarding limited water resources and possible soil moisture depletion. In irrigated organic systems, potential ecosystem services from cover crops also must be considered in light of the concerns for water conservation. A constructive balance could be achieved with fall-sown small grain cover crops; however, their impacts on irrigated organic systems are poorly understood. Our first objective was to determine the ability of fall-sown small grains [cereal rye (Secale cereale L), winter wheat (Triticum aestivum L.), barley (Hordeum vulgare L.) and oat (Avena sativa L.)] to suppress winter weeds in an irrigated, organic transition field in the southwestern USA. Small grains were planted following the legume sesbania (Sesbania exaltata (Raf.) Rydb. ex A.W. Hill) during Fall 2012 and Fall 2013. In Spring 2013 and 2014, weed densities and biomass were determined within each cover crop treatment and compared against unplanted controls. Results indicated that both barley and oat were effective in suppressing winter weeds. Our second objective was to compare weed suppression and soil moisture levels among seven barley varieties developed in the western United States. Barley varieties (‘Arivat’, ‘Hayes Beardless’, ‘P919’, ‘Robust’, ‘UC603’, ‘UC937’, ‘Washford Beardless’) were fall-sown in replicated strip plots in Fall 2016. Weed densities were measured in Spring 2017 and volumetric soil moisture near the soil surface (5.1 cm depth) was measured at time intervals beginning in December 2016 and ending in March 2017. With the exception of ‘UC937’, barley varieties caused marked reductions in weed density in comparison with the unplanted control. Soil moisture content for the unplanted control was consistently lower than soil moisture contents for barley plots. Barley variety did not influence volumetric soil moisture. During the 2017–2018 growing season, we re-examined three barley varieties considered most amenable to the cropping system requirements (‘Robust’, ‘UC603’, ‘P919’), and these varieties were again found to support few weeds (≤ 5.0 weeds m−2). We conclude that several organically certified barley varieties could fill the need for a ‘non-thirsty’ cover crop that suppresses winter weeds in irrigated organic systems in the southwestern United States.

This study assessed the extant literature related to the use of high tunnels (HTs) in agricultural systems in the United States since the 2009 launch of the Natural Resources Conservation Service (NRCS) High Tunnel Initiative. This NRCS program led to an increase in HT adoption nationwide. The literature searches were conducted using the Web of Science (WoS) database. The final sample was 133 peer-reviewed articles published between 2009 and February 2023. We used CiteSpace 6.2.R1 and Gephi 0.9.2 to conduct co-citation, co-author, co-institution, and clustering techniques. The findings showed that the peer-reviewed literature about HT use has increased since 2009, substantially rising between 2017 and 2021. Horticulture was the top subject category in the literature, and most articles were published in peer-reviewed journals of the American Society for Horticultural Science (i.e., HortTechnology and HortScience). The research field evolved from general HT practices, nutrient management, and plant pathology to focus on trials of specific crops and integrated pest management. The institutions with the most contributions to the HT literature were Kansas State University, the University of Florida, Michigan State University, Purdue University, and the University of Minnesota. The patterns of HT research revealed in this study offer a greater understanding of the current state of knowledge to inform the focus of future research.

Sorghum plays a crucial role in the rural economy and nutrition of rural households in Mali. Yet the productivity of this crop is constrained by limited adoption of agricultural intensification technologies, which could be partly because technology development does not properly consider farmers' preferences. This study with smallholder farmers in southern Mali aimed to assess farmers' preferences for different attributes of sorghum technologies through the lens of sustainable intensification. The study used a discrete choice experiment, a method which involves asking individuals to state their preference over hypothetical alternative scenarios, goods or services. We considered six attributes corresponding to different domains of sustainable intensification: grain yield, risk of yield loss, soil fertility, nutrition, labor requirement and fodder yield. We analyzed the data using the mixed logit model, while considering the multinomial logit model as a robustness check. The findings revealed that smallholder farmers are strongly interested in transitioning from their existing sorghum-based cropping systems to those that closely align with these domains of sustainable intensification. However, there were diverse preferences among all the smallholder farmers studied, and between distinct sub-groups of smallholder farmers characterized by their social networks and agroecological zones, which yield relevant policy implications. Overall, these results support the growing research and development prioritization and policy interests toward scaling sustainable intensification among farmers, with a particular focus on human nutrition.