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This page lists all time most cited articles for this title. Please use the publication date filters on the left if you would like to restrict this list to recently published content, for example to articles published in the last three years. The number of times each article was cited is displayed to the right of its title and can be clicked to access a list of all titles this article has been cited by.
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Financial relevance of organic farming payments for Western and Eastern European organic farms
- K. Zander, H. Nieberg, F. Offermann
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- Published online by Cambridge University Press:
- 25 February 2008, pp. 53-61
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Organic farming in the European Union has been supported widely since 1994. Against the background of discussions concerning the design and level of organic farming support, and the relevance of organic payments for the economic success of organic farms, the question emerges as to the impact of support payments on the sustainable development of organic farming in Europe. Different databases and methodological approaches have been chosen to demonstrate the role of organic farming payments for the viability of organic farms for selected Western and Eastern European study countries. Economic analyses are based on national Farm Accountancy Data Network (FADN) in the Western European countries and on ‘typical farms’ in the Eastern European group. As a supplement to the modeling analyses, a detailed survey of 50 organic farms was carried out in each of the study countries. Organic farming payments were assessed to be ‘important’ or ‘very important’ to the economic situation on farms by the majority of the farmers surveyed. The outcome of the economic analyses shows that organic farming payments contribute on average 4–6% of gross output in the Western European countries and 4–19% in the Eastern European countries studied. The results put the level of specific support for organic farming into perspective, as other support payments and market returns contribute larger shares of total farm revenue in all the countries analyzed. Organic farming payments account for 10–30% of family farm income plus wages in Western European study countries and—after EU accession—up to three-quarters in some of the Eastern European countries, thus highlighting the considerable vulnerability of organic farms to changes in organic farming policy. As a general trend in both the West and the East, it can be observed that the policy dependency of farms has increased over recent years. Changes in organic area support, which are actually under discussion in some countries, must be carried out with a sense of proportion, since support payments will continue to play an important role in the profitability of organic farms. Nevertheless, in order to reduce dependency on area payments, organic farming support should follow an integrated approach, using a mix of support measures including, e.g., the improvement of processing and marketing facilities, support for farm cooperation and activities designed to enhance demand.
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International trade of organic food: Evidence of US imports
- Lydia Oberholtzer, Carolyn Dimitri, Edward C. Jaenicke
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- 16 May 2012, pp. 255-262
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Over the past decade, organic food sales and farmland have grown rapidly worldwide. As the US market for organic food has expanded, anecdotal evidence indicates that imports of organic food have increased. US organic handlers may be importing to meet consumer demand for out-of-season products, as well as products not grown domestically. Handlers may also be importing organic products that are in short supply or to reduce input costs. This paper provides the first examination of imports of organic products into the USA. Data from a national survey of certified organic handlers in 2007 are used to examine the extent, types and origins of imported organic commodities. A Heckman model is employed to investigate the factors that influence an organic handler's decision to import organic products, and the level at which organic handlers import a product. Summary results show that while many of the products being imported into the USA are those that cannot be produced domestically, such as coffee and tropical fruits, some oft-imported commodities are those that can be produced in the USA, such as soybeans, wheat, barley and berries. The summary results also show that organic handlers are procuring almost a half of their imported products from a few countries, including Canada, China, Mexico, Brazil and Indonesia. In the econometric analysis, we found those handlers prioritizing local suppliers negatively affected the facility's decision to import products. The use of a social label, such as Fair Trade, positively affected a handler's decision to import. The size of organic sales was important to both the decision to import and the share imported, with larger firms more likely to import and smaller firms less likely to import. However, once a smaller firm had decided to import, they imported a larger share. Finally, our analysis found that experiencing limited supplies or prioritizing price with suppliers did not influence a handler's decision to import products. Based on the findings, we suggest future research avenues, including studies that address consumer preferences and the impact of increased imports on domestic organic farms.
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Peru potato potential: Biodiversity conservation and value chain development
- Daniel Tobin, Rick Bates, Mark Brennan, Tom Gill
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- 26 July 2016, pp. 19-32
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Although crop diversity has been identified as essential to enhance global food security and adapt to climate change, high loss of genetic resources is occurring due to agricultural industrialization and market requirements. Value chain development is an emerging market strategy that seeks to simultaneously achieve agrobiodiversity conservation and economic goals, though little empirical evidence exists regarding the extent to which value chains encourage biodiversity maintenance. This study considers the conservation of native potatoes among households in the highlands of Peru where value chain development is being pursued to create market niches for certain native potato varieties. Utilizing a mixed-methods case study approach, the findings of this study indicate that the conservers of native varieties are the households with more endowed resource bases as well as those that sell native varieties in value chains. However, the findings suggest that value chains themselves likely have only a marginal effect on conservation. Native potato conservation and potato production for value chains exist as two separate livelihood activities, and households with more resources are best positioned to engage in both. While value chains allow households to capitalize on the economic value of certain native varieties, the production of other native varieties allows households to fulfill cultural values. Based on these findings, this study concludes that value chain opportunities for native varieties should continue to be identified but they alone are not an adequate strategy to conserve agrobiodiversity. Therefore, in addition to value chain development, a full suite of conservation schemes should be implemented simultaneously.
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No-till seeded spinach after winterkilled cover crops in an organic production system
- Natalie P. Lounsbury, Ray R. Weil
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- Published online by Cambridge University Press:
- 03 September 2014, pp. 473-485
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Organic no-till (NT) management strategies generally employ high-residue cover crops that act as weed-suppressing mulch. In temperate, humid regions such as the mid-Atlantic USA, high-residue winter cover crops can hinder early spring field work and immobilize nutrients for cash crops. This makes the integration of cover crops into rotations difficult for farmers, who traditionally rely on tillage to prepare seedbeds for early spring vegetables. Our objectives were to address two separate but related goals of reducing tillage and integrating winter cover crops into early spring vegetable rotations by investigating the feasibility of NT seeding spinach (Spinacia oleracea L.), an early spring vegetable, into winterkilled cover crops. We conducted a four site-year field study in the Piedmont and Coastal Plain regions of Maryland, USA, comparing seedbed conditions and spinach performance after forage radish (FR) (Raphanus sativus L.), a low-residue, winterkilled cover crop, spring oat (Avena sativa L.), the traditional winterkilled cover crop in the area, a mixture of radish and oat, and a no cover crop (NC) treatment. NT seeded spinach after FR had higher yields than all other cover crop and tillage treatments in one site year and was equal to the highest yielding treatments in two site years. Yield for NT spinach after FR was as high as 19 Mg ha−1 fresh weight, whereas the highest yield for spinach seeded into a rototilled seedbed after NC was 10 Mg ha−1. NT seeding spring spinach after a winterkilled radish cover crop is feasible and provides an alternative to both high-residue cover crops and spring tillage.
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Who's afraid of Allan Savory? Scientometric polarization on Holistic Management as competing understandings
- Kate Sherren, Carlisle Kent
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- 07 June 2017, pp. 77-92
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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.
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Investment behavior and status quo bias of conventional and organic hog farmers: An experimental approach
- Daniel Hermann, Oliver Mußhoff, Katrin Agethen
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- Published online by Cambridge University Press:
- 22 July 2015, pp. 318-329
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Despite the economic benefits of organic farming, the conversion rates to this production method are low. The reasons for this reluctance are largely unknown; however, understanding this behavior is important for policy recommendations. Therefore, we experimentally investigate and compare the investment behavior of organic and conventional hog farmers. We examine whether the investment behavior depends on the organic or conventional farmers’ status quo of their production method. Our results show that farmers are more reluctant to invest in production methods they are not currently using compared with those already in use on their farm. Conventional, more risk-averse farmers, and those farmers holding a university degree, invest later in a hog barn. The results provide evidence that investment decisions depend on the status quo production method of a farmer and, thus, reveal that current subsidy structures may be ineffective in encouraging farmers to invest in production methods they are not currently using on their farms.
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Strip-tillage renovation of intermediate wheatgrass (Thinopyrum intermedium) for maintaining grain yield in mature stands
- Eugene P. Law, Christopher J. Pelzer, Sandra Wayman, Antonio DiTommaso, Matthew R. Ryan
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- Published online by Cambridge University Press:
- 01 December 2020, pp. 321-327
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Kernza® intermediate wheatgrass [Thinopyrum intermedium (Host) Barkworth & Dewey], the first perennial grain crop to come to market in North America, can provide a number of ecosystem services when integrated into cropping systems that are dominated by annual grain crops. However, grain yield from Kernza is lower than comparable annual cereal crops such as wheat and oats. Also, although Kernza is a long-lived perennial that can persist for decades, grain yield tends to decline over time as Kernza stands age leading most farmers to replant or rotate to a different crop after 3–5 yrs. Increased intraspecific competition as stand density increases with age has been reported to cause grain yield declines. We investigated the effect of strip-tillage applied at two different timings, between the third and fourth grain harvests, from a Kernza stand in upstate New York. Strip-tillage applied in late fall as plants were entering dormancy increased grain yield by 61% when compared to the control treatment without strip-tillage. However, total crop biomass was not reduced resulting in a greater harvest index for the fall strip-tillage treatment. Strip-tillage applied before stem elongation the following spring reduced overall tiller density and total crop biomass but did not impact tiller fertility or grain yield compared to the control treatment without strip-tillage. Increased grain yield in the fall strip-tillage treatment was due to an increase in the percentage of tillers that produced mature seedheads. This suggests that grain yield decline over time is at least partially caused by competition between tillers in dense stands. Results support further research and development of strip-tillage and other forms of managed disturbance as tools for maintaining Kernza grain yield over time.
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Weed management in organic echinacea (Echinacea purpurea) and lettuce (Lactuca sativa) production
- P. Kristiansen, B.M. Sindel, R.S. Jessop
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- Published online by Cambridge University Press:
- 27 May 2008, pp. 120-135
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Weed management is a major constraint in organic production. It can be expensive and time-consuming and severe crop yield losses may be incurred when weeds are not adequately controlled. Research on organic weed management (OWM) in herb and vegetable production is increasing internationally, although in Australia very little work has been done to assess current OWM knowledge among growers, and to test the efficacy and cost effectiveness of the weed management practices used by organic growers. The effect of hand weeding, tillage, hay mulch, pelletized paper mulch (PP) and an unweeded control treatment on weed growth, crop growth and cost effectiveness were evaluated in several field trials on the Northern Tablelands of New South Wales using lettuce (Lactuca sativa L.) and echinacea (Echinacea purpurea Moench. [L.]). In echinacea, hand weeding, hay mulch and PP reduced weed growth by at least 90% compared with the control, while tillage reduced weed levels by about 50%. The more expensive weeding methods such as hand weeding and hay mulch (AU$9600 and 8900 ha−1 respectively) produced higher yields, while the cheaper methods such as tillage ($4000 ha−1) had low crop yields and were therefore 25–50% less cost effective. In lettuce, weed growth was reduced by 96% for hand weeding and PP compared with the control, 85% for hay mulch and 66% for tillage. Weed management was cost-effectively achieved using cheaper weeding methods such as tillage ($985 ha−1) compared with more expensive methods such as hand weeding and hay mulching ($4400 and 7600 ha−1 respectively). PP had lower yields and was expensive ($12,500 ha−1) and was usually not cost effective in these trials. The results highlight several important advantages and disadvantages of currently used OWM methods in the field.
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Essential oil of Ocotea odorifera: An alternative against Sitophilus zeamais
- Altemir J. Mossi, Camila A. Zanella, Gabriela Kubiak, Lindomar A. Lerin, Rogerio L. Cansian, Fernando Scarati Frandoloso, Valéria Dal Prá, Marcio Antonio Mazutti, Jorge Alberto Vieira Costa, Helen Treichel
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- Published online by Cambridge University Press:
- 08 March 2013, pp. 161-166
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Nowadays, the maize weevil Sitophilus zeamais—Motsch 1855 is the most relevant pest found during storage of maize grains. Aiming at protecting the agricultural crops, high amounts of synthetic pesticides are used around the world. In this sense, this work aimed at evaluating the insecticidal and repellent effect of essential oil of Ocotea odorifera (Vellozo) Rohwer (Lauraceae) (O. odorifera (sassafras)) leaves against the maize weevil in maize grains. The essential oil's chemical composition showed that sassafras contains camphor (43%) and safrole (42%) as major compounds. Our results show that sassafras oil was insecticidal and repellent to maize weevil. About 100% mortality was achieved using a concentration of 0.32 μl cm−2, after 24 h of exposure. The LD50 value was 14.1 μl or 0.09 μl cm−2 and the study of the effect on insect mortality at the lethal doses (LD50) showed that after 72 h mortality was 100%. The values of the preference index varied from −0.39 (0.065 μl cm−2) to −0.63 (0.659 μl cm−2), demonstrating that the plant oil presents repellent activity. The repellency bioassay simulating small bins showed the repellent effect level from 0.64 (0.36 μl cm−3) to 0.94 (2.9 μl cm−3). The essential oil of sassafras presented insecticidal and repellency against maize weevil. Although from an economical point of view synthetic chemicals are still more frequently used as repellents, natural products (essential oils) have the potential to provide efficient and safer repellents for humans and the environment.
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From farming to food systems: the evolution of US agricultural production and policy into the 21st century
- Carolyn Dimitri, Anne Effland
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- 12 November 2018, pp. 391-406
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Nearly two decades into the 21st century, we revisit the topic of changes in the US agricultural system. We focus on trends in structure, technology and policy, and on the increasing influence of consumer preferences on this system, particularly for organic agriculture and local and regional foods. We examine technological innovations in the 21st century, including biotechnology, precision agriculture and indoor farming. Within overall trends toward consolidation, we identify an increasing number of vegetable farms and greenhouse operations, accompanied by a decrease in average size of those operations. We note the shift away from price support toward greater reliance on risk management in farm policy, and also track the impact of food movement trends on recent farm bills. While farm bill policies continue to focus on conventional field crop agriculture, some trends—expanded crop insurance, conservation program support and spending on federal data collection, research and community-based grants, for example—have begun to incorporate the growing movement toward organic, local and regional food systems into the mainstream of US agricultural production and policy.
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School districts and their local food supply chains
- Libby O. Christensen, Becca B. R. Jablonski, Jeffrey K. O'Hara
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- 07 November 2017, pp. 207-215
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The 2015 Farm to School Census reports that during the 2013–2014 school year there were over 5200 farm to school (FTS) programs in the USA that involved 39,000 schools and 24.1 million children. These FTS programs are intended, in part, to increase market access and therefore the viability of farms and ranches. Accordingly, the majority of FTS programs involve local food procurement directly from farmers, from non-traditional suppliers that market locally branded food products such as ‘food hubs’, or from traditional suppliers such distributors and food service management companies. Yet, there is reason to believe that transaction costs vary based on the supply chain that schools use to procure local food. Moreover, that the supply chain that schools use to procure local food has a relationship with school's expenditures on local food. We use the 2015 Farm to School Census to estimate the relationship between school district's local food expenditures per student and supply chain structure. We analyzed data using ordinary least squares regressions, controlling for the region of the USA, the type of local food products purchased, and other school-specific characteristics. Importantly, we find a negative and significant relationship between school district's non-milk local food expenditure per student, and purchases directly from the farm and from non-traditional suppliers. This implies that schools that purchase local food from traditional distributors are likely to have higher on average expenditures per student compared with schools that purchase local food directly from farmers or non-traditional distributors. Results point to the need for additional research in determining the efficacy of policies to support direct and non-traditional FTS marketing arrangements.
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Precision planting impacts on winter cereal rye growth, nutrient uptake, spring soil temperature and adoption cost
- Amir Sadeghpour, Oladapo Adeyemi, Dane Hunter, Yuan Luo, Shalamar Armstrong
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- Published online by Cambridge University Press:
- 07 January 2021, pp. 328-333
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Growing winter cereal rye (Secale cereale) (WCR) has been identified as an effective in-field practice to reduce nitrate-N and phosphorus (P) losses to Upper Mississippi River Basin, USA. In the Midwestern USA, growers are reluctant to plant WCR especially prior to corn (Zea mays L.) due to N immobilization and establishment issues. Precision planting of WCR or ‘skipping the corn row’ (STCR) can minimize some issues associated with WCR ahead of corn while reducing cover crop seed costs. The objective of this study was to compare the effectiveness of ‘STCR’ vs normal planting of WCR at full seeding rate (NP) on WCR biomass, nutrient uptake and composition in three site-yrs (ARC2019, ARC2020, BRC2020). Our results indicated no differences in cover crop dry matter biomass production between the STCR (2.40 Mg ha−1) and NP (2.41 Mg ha−1) supported by similar normalized difference vegetative index and plant height for both treatments. Phosphorus, potassium (K), calcium (Ca) and magnesium (Mg) accumulation in aboveground biomass was only influenced by site-yr and both STCR and NP removed similar amount of P, K, Ca and Mg indicating STCR could be as effective as NP in accumulating nutrients. Aboveground carbon (C) content (1086.26 kg h−1 average over the two treatments) was similar between the two treatments and only influenced by site-yr differences. Lignin, lignin:N and C:N ratios were higher in STCR than NP in one out of three site-yrs (ARC2019) indicating greater chance of N immobilization when WCR was planted later than usual. Implementing STCR saved $8.4 ha−1 for growers and could incentivize growers to adopt this practice. Future research should evaluate corn response to STCR compared with NP and assess if soil quality declines by STCR practice over time.
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Pathways to intensify the utilization of conservation agriculture by African smallholder farmers
- Brendan Brown, Ian Nuberg, Rick Llewellyn
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- Published online by Cambridge University Press:
- 14 February 2018, pp. 558-570
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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.
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Farm service agency employee intentions to use weather and climate data in professional services
- Rachel E. Schattman, Gabrielle Roesch-McNally, Sarah Wiener, Meredith T. Niles, David Y. Hollinger
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- Published online by Cambridge University Press:
- 20 February 2018, pp. 212-221
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Agricultural service providers often work closely with producers, and are well positioned to include weather and climate change information in the services they provide. By doing so, they can help producers reduce risks due to climate variability and change. A national survey of United States Department of Agriculture Farm Service Agency (FSA) field staff (n = 4621) was conducted in 2016. The survey was designed to assess FSA employees’ use of climate and weather-related data and explore their perspectives on climate change, attitudes toward adaptation and concerns regarding climate- and weather-driven risks. Two structural equation models were developed to explore relationships between these factors, and to predict respondents’ willingness to integrate climate and weather data into their professional services in the future. The two models were compared with assess the relative influence of respondents’ current use of weather and climate information. Findings suggest that respondents’ perceptions of weather-related risk in combination with their personal observations of weather variability help predict whether an individual intends to use weather and climate information in the future. Importantly, climate change belief is not a significant predictor of this intention; however, the belief that producers will have to adapt to climate change in order to remain viable is. Surprisingly, whether or not an individual currently uses weather and climate information is not a good predictor of whether they intend to in the future. This suggests that there are opportunities to increase employee exposure and proficiency with weather and climate information to meet the needs of American farmers by helping them to reduce risk.
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Landscape positions dictating crop fertilizer responses in wheat-based farming systems of East African Highlands
- Tilahun Amede, Tadesse Gashaw, Gizachew Legesse, Lulseged Tamene, Kindu Mekonen, Peter Thorne, Steffen Schultz
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- 30 January 2020, pp. S4-S16
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Improving fertilizer use efficiency has remained a challenge, particularly for small-scale farming in undulating ‘abnormal’ landscapes of East Africa. Milne's 1930s concept on ‘Catena’ was considered as a breakthrough in understanding soil variability and its implication on productivity in East African highlands. However, there is limited information on how the ‘Catena’ features could be used for fine tuning fertilizer recommendations. We initiated multiple on-farm replicated experiments in three wheat-growing districts (Endamohoni, Lemo and Worreilu) in the Ethiopian highlands in 2014, 2015 and 2016 to assess landscape positions affecting crop-nutrient responses, identify yield limiting nutrients across the ‘Catena’ (N, P, K, S and Zn) and quantify effects of landscape positions on resources use efficiency. We clustered farmlands across the ‘Catena’ (Hillslopes, Midslopes and Footslopes) based on land scape positions in the respective locations. Wheat yield was more strongly and significantly affected by landscape positions (P < 0.001) than by nutrient sources or rates. The crop response to fertilizers was 50 to 300% higher in foot slopes than in hillslopes, depending on locations and inputs levels. With increasing slope, there was a decrease in a crop fertilizer response due to a significant decrease in soil organic carbon, clay content and soil water content, with r2 of 0.95, 0.86 and 0.96, respectively. The difference in the crop response between landscape positions was significantly higher (P < 0.05) with higher rates of nutrient applications (>N92 P46) while differences between landscape positions diminish at lower rates. Yield benefits due to application of K was significant only in the dry years (P < 0.05), while there was hardly any yield benefit from the application of zinc and sulfur. The crop nitrogen recovery fraction and crop water productivity decreased with an increasing slope regardless of nutrient combinations. The results indicated that the landscape position could be considered as a proxy indicator for targeted fertilizer application, particularly in farms with undulating topographic features. Hillslopes are better served by the application of organic fertilizers along with conservation measures as applying higher rates of mineral fertilizer in hillslopes would rather increase the risk of downstream nutrient movement.
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Organic farmer perceptions of reduced tillage: A Michigan farmer survey
- Carolyn J. Lowry, Daniel C. Brainard
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- 11 July 2017, pp. 103-115
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A common critique of organic farming is that it is very tillage intensive, and therefore deleterious to soil quality. However, little information is available on the tillage practices currently employed by organic farmers, as well as organic farmers’ attitudes toward reduced tillage (RT). To address these knowledge gaps, a detailed written survey of Michigan organic field crop and vegetable farmers was conducted to investigate their current tillage practices, as well as their perceptions of the barriers and benefits to adoption of RT. Respondents reported a wide range in tillage frequency and intensity, both across and within production of specific crops, with operations split evenly between field preparation and cultivation. Compared with field crop growers, vegetable growers were generally smaller scale and relied more heavily on a limited set of tillage (e.g., rototiller) and cultivation tools. Interest in adoption of RT practices among respondents was low to moderate with median Likert scale ratings (0–7 scale with 0 representing no interest and 7 extreme interest) of 4 or less for all forms of RT. Vegetable growers were most interested in permanent beds, rotational tillage and strip tillage, whereas field crop growers were most interested in rotational tillage and strip tillage. The greatest perceived benefits to adoption of RT were improved soil quality and fuel savings. Both groups ranked weeds, impacts on yields, residue management and crop establishment as high barriers to RT adoption. Vegetable growers also cited lack of scale appropriate equipment as a major barrier. Survey results suggest that future research efforts should focus on overcoming key barriers to adoption, such as weed management and access to low-cost adaptable RT equipment rather than reiterating relatively well-known soil quality benefits. Our results also suggest that promotion of incremental reductions in the frequency and intensity of tillage operations on organic farms may be more realistic and equally valuable compared with promotion of more extreme forms of RT such as no-till.
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Farmer research: Conventional experiences and guidelines for alternative agriculture and multi-functional agro-ecosystems
- C.S. Wortmann, A.P. Christiansen, K.L. Glewen, T.A. Hejny, J. Mulliken, J.M. Peterson, D.L. Varner, S. Wortmann, G.L. Zoubek
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- 12 February 2007, pp. 243-251
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Crop producers are challenged to operate profitably, use resources efficiently, meet high standards of quality and protect the environment, while sustaining rural economies and societies. Cropping systems are generally fine-tuned and improved through changes that have small effects which can often be verified only through research. The processes and successes of two farmer research projects were studied. Results of these studies, information from other sources and the authors' reflections on their own experiences were integrated to develop guidelines for the implementation of farmer research projects for alternative agriculture and multi-functional agro-ecosystems with diverse stakeholders. Surveys were mailed to 118 farmers currently or previously participating in a farmer research project, and to 15 advisors. Responses show that involvement in a farmer research project was profitable, stimulating, enjoyable and worthwhile, despite a substantial time requirement. Tillage and soil fertility research had greater impact on annual farm profit than research on other topics. Farmers and advisors emphasized the importance of the farmers' roles in identification of research topics, research planning and implementation, and interpretation of the results. Replicated trials conducted over 2 or 3 years were recognized as necessary to adequately verify practices for the corn–soybean rotation of eastern Nebraska, USA. Such trials may need to be complemented with alternative research approaches for improving alternative agriculture and multi-functional agro-ecosystems where knowledge about some system components is relatively scarce and there is a need to evaluate long-term effects. In conclusion, organized farmer research is an efficient means to cropping system improvement. Guidelines are given for initiation and implementation of farmer research projects.
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Where have all the houses (among other things) gone? Some critical reflections on urban agriculture
- Laura B. DeLind
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- 22 January 2014, pp. 3-7
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Urbandale Farm (Lansing, MI) has much in common with other urban agricultural projects throughout the US and especially those in the rust-belt cities of the Midwest. It raises food for an economically challenged neighborhood. It offers opportunities for local participation, education and job creation, and it is supported by diverse public and private institutions. By all official accounts, Urbandale Farm is good at what it does. Its acreage, production, income and entrepreneurial activities are all increasing, and it has become a poster child for urban agriculture throughout the city. However, despite its good work (or possibly because of it), Urbandale Farm, and urban agriculture more generally, may unwittingly be helping to rationalize the displacement and continued social and political inequity of urban neighbors rather than reinforcing greater place-making, neighborhood empowerment and sustainability. Using Urbandale Farm as a case in point, this paper critically explores how urban agriculture is being used by some scholars, activists, governmental offices and agencies to transform fragile neighborhoods. It questions some of the movement's underlying assumptions as well as some of its actual benefits and beneficiaries. The paper also offers suggestions—for the purpose of initiating a more nuanced conversation—on how urban agriculture can be reconfigured philosophically and practically to shed its neoliberal tendencies and contribute to a more structurally based social and political transformation.
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Evaluating anaerobic soil disinfestation and other biological soil management strategies for open-field tomato production in Florida
- Bodh R. Paudel, Francesco Di Gioia, Xin Zhao, Monica Ozores-Hampton, Jason C. Hong, Nancy Kokalis-Burelle, Cristina Pisani, Erin N. Rosskopf
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- Published online by Cambridge University Press:
- 20 November 2018, pp. 274-285
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In the search for alternative practices to chemical soil fumigation (CSF), anaerobic soil disinfestation (ASD) has proven to be a promising tool for soil-borne pest management and crop production improvement. The ASD treatment with composted poultry litter (CPL) and molasses (M, a labile carbon source) was identified as an effective approach for a biologically based soil disinfestation system in tomato (Solanum lycopersicum L.) production in Florida. However, environmental and food-safety concerns are associated with animal manure-based amendments, which led to the exploration of composted yard waste (CYW) as a potential substitute for CPL in ASD application. In this study, field trials were conducted in Citra and Immokalee, FL to examine the effects of ASD using CYW, CPL and M compared with a commercially available microbial amendment system on root-knot nematodes, weeds, fruit yield and quality of fresh-market tomato. Treatments included (1) ASD with CPL (11 Mg ha−1) and M (6.9 m3 ha−1) (ASD0.5), (2) ASD with CYW (26.9 Mg ha−1) and M (CYW1 + M), (3) ASD with CYW (13.5 Mg ha−1) and M (CYW0.5 + M), (4) Soil Symphony Amendment (SSA), (5) CYW (26.9 Mg ha−1) alone (CYW1) and (6) a combination of CYW1 + SSA, in comparison with (7) untreated control and (8) CSF (Pic-Clor 60 at 224 kg ha−1). Cumulative soil anaerobiosis was greater in ASD0.5 compared with all the other treatments. The root-knot nematode gall index ratings on the tomato crop were significantly lower in CSF, ASD0.5, CYW1 + M and CYW0.5 + M than untreated control in Citra. Although CYW1 and SSA alone had a moderately suppressive effect on weed coverage and root-knot nematodes, their positive impact on crop performance was limited when used alone. ASD0.5, CYW1 + M and CSF had significantly higher marketable and total fruit yields than untreated control in both locations, while all treatments showed promising results in the Immokalee trial in comparison with untreated control. In general, few differences in major fruit quality attributes were found. Although using CYW in ASD was not as effective as CPL in creating soil anaerobic conditions, the enhanced crop performance in CYW1 + M and CYW0.5 + M suggests the potential of using CYW as an alternative source of organic amendment in combination with M to achieve benefits similar to those obtained with CPL-based ASD.
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Contracting and gender equity in Tanzania: using a value chain approach to understand the role of gender in organic spice certification
- Renee Bullock, Amos Gyau, Dagmar Mithoefer, Marilyn Swisher
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- Published online by Cambridge University Press:
- 03 April 2017, pp. 60-72
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Value chain development (VCD) initiatives within the horticultural and organic sectors in Africa are promising strategies to improve smallholder welfare. Contracting institutional arrangements are a common feature of VCD initiatives and are increasing in number in sub-Saharan Africa as a way to source organic products from smallholder producers. The objective of this study is to better understand men and women's participation in spice producing households that sell under contract and in conventional market chains in the East Usambaras, Tanzania. We draw on New Institutional Economics, political economy and the value chain analysis framework to assess the potential role of contracting to promote gender equity among smallholder organic horticultural producers. We describe intra-household decision making over resources and marketing, access to benefits of contracting, and labor distribution between men and women in contracting and non-contracting households. We then extend the gender analysis to evaluate the role of gender in contracting and conventional value chains operating within the community and district. Using a cross-sectional research design and data collected through 13 focus group discussions, 54 personal interviews and 156 household questionnaires, we show that contracting reduces transaction costs in the chain compared with the conventional trade. However, norms in the wider political economic context give rise to gendered patterns of participation in both household and chain activities in contracting and non-contracting households. Our findings suggest that contracting does not provide significant opportunities for women in married households to participate and benefit based on limited participation in decision-making and access to trainings. Divorced women and widows gain access to contract employment opportunities to earn income. This study highlights the importance of understanding gender relations in the household and community to guide the development of gender equitable VCD initiatives and contracting approaches.