If the United Nations Sustainable Development Goals are to be achieved, African smallholder farmers will need to embrace new technologies such as conservation agriculture (CA) in order to increase both their productivity and sustainability. Yet farmers have been slow to embrace CA and when they have, they are inclined to do so at limited intensities. Current investigations tend to apply binary frameworks that classify all utilizations as ‘adoption’, and do not consider in depth the farmer perspectives and contextual realities that affect farmer decision-making on the intensity of use. We analyze 57 in-depth, semi-structured interviews with farmers who implement CA to understand why they tend to do so at limited intensities and what is required to intensify their CA activities, both for them and others within their communities. While most farmers reported substantial yield benefits from using CA, this was mainly related to input intensification (particularly herbicides) and was limited by constrained financial resources. Overall, the intensity of CA utilization was constrained due to farmer-identified constraints across their physical, financial, human and informational resources. Because of this, stagnation at low intensities of CA utilization was common, reflecting the assumed transformational adoption pathway for CA and the focus on binary adoption, as opposed to modification and the broader utilization process. To overcome this, we propose a more nuanced transitional approach focused on the intensification of four broader principles of CA over time [i.e., (1) strategic tillage, (2) soil protection, (3) crop diversification and (4) input management] as opposed to the strict packaging of CA practices. Such a change in approach will foster increased positive perceptions within the community and allow farmers to locally adapt CA to build their own way toward complete CA utilization and with less need for subsidization.

Over the past few decades, farmers have increasingly integrated cover crops into their cropping systems. Cover-crop benefits can help a farmer to achieve sustainability or reduce negative environmental externalities, such as soil erosion or chemical runoff. However, the impact on farm economics will likely be the strongest incentive to adopt cover crops. These impacts can include farm profits, cash crop yields or both. This paper provides a review of cover-crop adoption, production, risk and policy considerations from an economic perspective. These dimensions are examined through a review of cover-crop literature. This review was written to provide an overview of cover crops and their impacts on the farm business and the environment, especially with regard to economic considerations. Through increasing knowledge about cover crops, the intent here is to inform producers contemplating adoption and policy makers seeking to encourage adoption.

Efficient phosphorus (P) recycling from rural and urban areas is becoming an increasing issue due to the scarcity of natural P deposits. Based on a life cycle assessment (LCA), we analyzed the environmental performance of 17 different P supply and recycling approaches from urban wastes, biosolids and slaughterhouse wastes compared with the two conventional inorganic fertilizers phosphate rock and triple superphosphate. The results show that many recycled P fertilizers (RPFs; e.g., digestates from urban organic wastes, biosolids and their ashes, meat and bone meal (MBM) and its recycling products) are competitive in terms of LCA results compared with conventional P fertilizers. For each of the P recycling sources, one or more treatment options were identified, which have more favorable LCA results than the conventional references. For sewage sludge, we found that direct application of the stabilized biosolids, and incineration with application of the ash showed the lowest LCA impacts per kg P; their treatments even generated net credits from added values. The same applies for the anaerobic digestion treatment of urban organic wastes. For MBM, low environmental impacts were identified for each of the analyzed treatment options, especially for anaerobic digestion, incineration, feeding with application of manure and direct application. Similarly, low environmental impacts and net credits were found for directly applied biomass ash. Some organically based RPFs demonstrate added values, i.e., as nitrogen and potassium fertilizer effect, energy gains during the treatment, or a humus sequestration potential. If these added values are considered in the LCAs, 11 out of 17 RPFs will have advantageous effects for the majority of addressed impact categories.

How to graze livestock sustainably is an important and complex question. The debate between rotational and continuous grazing has been ongoing since the 1950s, yet evidence is perennially mixed. We used scientometrics to understand the structure of science on Holistic Management (HM), the most contentious of these adaptive practices. We used papers in Web of Science since 1980 citing the work of HM's ‘father’, Allan Savory, as a way of delineating a field that is otherwise chaotic with terminology. Results show an increasingly diverse use of Savory's work geographically and in terms of subject areas. Taking a positive position on HM seems most likely for those doing farm-scale (rather than experimental) work in dry climates. Bibliographic factions align with the various disciplines working on grazing research and also their expressed opinion on HM practices. Factions represent disciplinary strength, suggesting barriers for integrative work but also the need for the resolution of competing understandings in specific contexts with diverse participants to inform grazing decisions.

The volume of food purchased by the American military makes it perhaps the single largest intermediated market for food in the USA. Consequently, it is not surprising that those seeking to enhance the economic viability of small and mid-scale farms may view military bases as a promising market for locally produced foods. This is a challenging prospect, however, due to the centralized structure of military command, the nature of the military procurement system and federal mandates to obtain products that maximize value at the lowest available cost. This paper describes the US military food procurement system and the work of a 3-yr initiative to increase the amount of locally produced, source-identified products used at a North Carolina military installation. Our experiences serve as a cautionary tale, with this paper designed as both a primer on ‘how it works’ for food procurement at the federal and base level, and a description of our largely unsuccessful attempts to increase the volume of local food products from small-/mid-scale producers moving through the supply chain into base dining halls and restaurants. Based on our experiences, we also make recommendations on possible entry points for local food and farm advocates to work within the existing system to localize food procurement.

Demonstrated economic benefits of conversion to organic agriculture, combined with solutions to technical and production-related problems, suggest that farmers in Switzerland should have converted in large numbers to organic production. However, the number of organic farms in Switzerland has remained virtually constant in the last 10 yr, so it appears there are other factors that influence the decision of whether or not to convert. Several studies have sought to identify the factors that influence the decisions by farmers whether or not to convert to organic, but have found a range of factors that appear to be context dependent, while others can be seen as context transcendent, which makes it difficult to draw generalizable conclusions. The aim of this study was to identify how Swiss farmers’ decisions reflect the interaction of perceptions, relationships, policies and economic factors, which either enable or provide barriers to conversion. Semi-structured interviews were conducted in 2015 with 39 farmers of mixed and arable farms in the German- (n = 24) and French-speaking (n = 15) parts of Switzerland. The interviews were recorded, transcribed and analyzed according to their content. The results show that the decision of whether or not to convert relies on belief that technical problems have been sufficiently solved, as well as a range of social factors. Farmers perceive social pressure for them to be productive, but non-organic farmers often incorrectly perceive organic farming as not being oriented toward production. Furthermore, ‘official’ advice, which could correct this misperception, is sought about how, rather than whether, to convert and typically comes after farmers have made their decision. Major barriers in an area with a low density of organic farms are the lack of supply and delivery points within an acceptable travel distance, and lack of peer networks to provide informal support. On the basis of these findings, we propose that strategies to encourage conversion should be based around two main pillars: investment to create a network of supply and delivery points in areas with low density of organic farms; and actions, such as information events, to encourage dialogue between conventional and organic farmers to counteract feelings of ‘us vs them’.

Weed control is one of the most important practices for a satisfying crop performance. In organic farming, weeds are mainly controlled by using mechanical methods, which may result in incomplete crop selectivity. Maize is one of the crops for which mechanical weed control is commonly applied. To assess weed control efficacy and the possible crop injuries caused by mechanical interventions (harrowing, hoeing and ridging), a field experiment was carried out in 2013–2014 on traditional flint Italian varieties of maize (Marano, Ottofile, Pignoletto, Nostrano and the hybrid Maranello) suited for organic food production. The study included the following treatments: weed control with a spring tine harrow + hoeing and ridging (STH), manual weed removal all season long (MWR), spring tine harrowing + manual weed removal (STH + MWR) and an untreated check (CHK). In the 2 years, the experiment was carried out in two similar fields in which 60 plots (6 × 10 m) were arranged in a RCBD with three replications. Weed control efficacy was assessed by determining weed density, weed species composition and weed cover after each mechanical intervention in the STH and CHK plots. Weed diversity indices were also calculated at the final assessment. The possible crop injuries caused by mechanical means were assessed by determining maize plant height, number of leaves, and plant density after each mechanical intervention. At maturity, maize yield and other yield-related traits (1000-seed weight, hectolitre weight, and grain moisture) were determined. The results showed that the mechanical treatments lowered the weed infestation, without changing weed species dominance and slightly lowering species richness; even though they were not able to completely control the weeds. In both years, the final weed density in STH plots was of about 50 plants m−2. Better weed control was obtained when weeds were at early growth stages and with a repeated number of harrowing. Mechanical weeding did not cause significant injury in terms of plant height nor density; however, for Marano and Maranello, a delay in the crop cycle was observed as shown by the lower number of leaves in STH compared with MWR. Yield ranged from 0.3 t ha−1 for Marano CHK to 10.4 t ha−1 for the hybrid Maranello in MWR + STH. Yield and yield-related traits were not affected by mechanical weeding.

The benefits of farming organically in the USA are increasingly known; however, organic farmers also encounter considerable risks, especially from weeds. Without herbicides, organic farmers can rely only on crop rotations, mechanical cultivation, manual weeding, beneficial insects and other cultural practices, termed ecological weed management (EWM), to control weeds. Despite promising results and the many ways in which EWM can be employed, it remains poorly adopted by the organic community. Organic farmers resist research and recommendations from University scientists and Extension, instead preferring to rely on local family and friends and their own experience to guide decisions. Here we investigate factors that may lead organic farmers to recognize that they need additional information about EWM and to seek that information out. Using a national survey of organic farmers (n = 554) and a risk-information seeking and processing model, we show that farmers’ risk and benefit perceptions, worry, social norms encouraging seeking out information, and farmers’ own perceived knowledge gaps, particularly with respect to their most problematic weed, influence information-seeking behavior. Identifying characteristics that may distinguish those organic farmers who need and want additional information, we provide recommendations to Extension and University scientists about how best to communicate, build trust and provide decision support to the organic community with respect to EWM.

Unavailability of irrigation water for early sowing has remained a constant problem in cold arid deserts of Ladakh. In order to get a solution to this problem, a 2-yr farmers’ participatory research trial with best bet agronomic management on artificial glacier water harvesting technology was conducted. The technology involves collecting water from natural glaciers that melt during late December. The water is diverted toward a shed constructed with stone embankments set up at regular intervals. The area is chosen where there is minimum interference of solar radiation, generally between two mountain slopes or ridge that is on the leeward side. The melted water is that melts from the natural glacier impeded by the embankments and get frozen here. This frozen water starts melting in late March and is used for both pre sowing and initial crop water requirement. It also ensures early sowing of wheat by creating additional 45-day window which leads to introduction of long- and medium-duration wheat varieties to replace decades old locally grown short-duration varieties. The work was initiated with a benchmark survey of 100 farmers to get an understanding of present irrigation scenario, crop management practices and date of sowing. Data from 99 farmer participating trial of wheat conducted after or from bench mark survey clearly indicated that the effect of water shortage can be seen on yield and yield attributing characters due to unavailability of pre sowing irrigation and water requirement at imperative growth stages and may also lead to terminal heat stress in wheat crop. Out of total number of irrigations applied, initial two irrigations can be compensated by artificial glacier water harvesting technique, leading to a revolution in the agriculture scenario of the tribal population by introduction of long- and medium-duration wheat varieties in cold arid desert of Ladakh for the very first time. It was observed that wheat seeding done in first fortnight of April gave better yields in comparison to late seeded wheat. Moreover, the long-duration varieties (LDVs) or medium-duration varieties (MDVs) sown under late condition gave better yield in comparison to locally grown short-duration varieties sown at same time. Yield potential of LDVs and MDVs of wheat under late sowing was found quite low in comparison to early-sown wheat, still when compared with the performance of locally grown wheat the yields were more even if the local varieties were sown early. The outcome of this study will help the farmers of tribal, cold arid community in harvesting better wheat yields by timely sowing of the wheat crop accompanied with better bet agronomic management practices. Government initiative is further required to ensure better outreach of complete crop management strategies to the tribal farming community of the region in order to ensure food security and improve their socioeconomic status.

Produce auctions are local aggregation points that facilitate access for small-scale fruit, flower and vegetable farmers to wholesale buyers from a broader geography. Buyers purchase lots from multiple farmers to fulfill wholesale demand and then retail the product to the consumers. Sales are held multiple times per week to create a consistent supply for buyers and a regular market for the farmers. With over 70 produce auctions located in eastern North America, this is a growing trend of intermediated markets. Currently, there are six active produce auctions in New York State, with two more in planning stages. Produce auctions have a positive economic impact on the communities in which they are located, as well as on those who sell and/or buy at the auction. Community values inherent to these populations contribute to the success of produce auctions as an intermediated market. As the auction market channel continues to grow, buyer and consumer education on the benefits of local auctions is important. As these auctions are based in horse-and-buggy communities, extension education needs to be tailored to Amish and Mennonite populations. Auction houses, as well as farmers, will need to stay current with federal food safety regulations and market-based requirements to remain competitive.

Short food supply chains, such as those of fruit and vegetable farmers delivering fresh product directly to restaurants, promise potentially higher returns to primary producers by avoiding the expense of intermediary distributors. Direct farm-to-chef supply chains also present a lower barrier to entry for small and beginning farmers, who are often scaled-out of the restaurant market by the volume requirements of food service distributors. High transactions costs for direct exchange, however, impede growth in this type of market channel. This From the Field paper describes an ongoing initiative by a regional food service distributor to play an active and collaborative role in the farm to food service supply chain, acting as a value chain partner to identify produce items desired by chefs, supply this market intelligence to growers and to garner commitments from farmers to grow and chefs to buy these products in upcoming seasons. By the eighth month of the effort, the distributor had assigned one of its produce buyers to act as a local specialist, working directly with chefs and local growers; and had initiated a series of mini local food shows to provide chefs and growers opportunities for face-to-face communication. The ultimate objective—to garner product-specific commitments from chefs and from growers—remains a work in progress.

In recent decades, a diverse community of dairy farmers, consumers and nutrition advocates has campaigned amidst considerable government opposition, to secure and expand the right of individuals to produce, sell and consume fresh unprocessed milk, commonly referred to as ‘raw milk’. This advocacy shares important parallels with battles fought in the organic food movement over the past century. Both the raw milk and organic food movements originated with farmers and consumers who sought to replace industrialized food production and processing practices with more traditional ones. Both movements equate the preservation of natural integrity in farming and food handling with more wholesome, nutritious food and environmental conservation. Both movements have had to work diligently to overcome a false perception that their practices are anachronistic, notably with regard to productive output of organic agriculture and the safety of fresh unprocessed milk. There is also the failure of opponents to acknowledge a growing body of scientific evidence for health benefits associated with drinking of fresh unprocessed milk. The raw milk movement has the potential to economically benefit family farmers, much as organic agriculture has done. Building soil fertility, a foundational principle of organic farming, would benefit from having numerous small pasture-based dairies spread across the land providing fresh unprocessed milk. Agricultural universities and the Cooperative Extension System could seize a real leadership opportunity by promoting and participating in this reinvention of dairy farming, and restoring the ecology of this traditional food and farming system.