Journal of Sustainable Agriculture最新文献_第4页

Soil Carbon Dioxide Fluxes in Conventional and Conservation Tillage Corn Production Systems Receiving Poultry Litter and Inorganic Fertilizer 常规耕作和保护性耕作玉米生产系统中禽畜废弃物和无机肥料的土壤二氧化碳通量

Journal of Sustainable Agriculture Pub Date : 2012-06-22 DOI: 10.1080/10440046.2012.695330

E. Nyakatawa, D. Mays, T. Way, D. Watts, H. Torbert, D. Smith

{"title":"Soil Carbon Dioxide Fluxes in Conventional and Conservation Tillage Corn Production Systems Receiving Poultry Litter and Inorganic Fertilizer","authors":"E. Nyakatawa, D. Mays, T. Way, D. Watts, H. Torbert, D. Smith","doi":"10.1080/10440046.2012.695330","DOIUrl":"https://doi.org/10.1080/10440046.2012.695330","url":null,"abstract":"Soil management practices can alter the natural balance at the soil-plant-atmosphere ecosystem interface, which can significantly affect the environment. This study compared CO2 fluxes in conventional tillage (CT) and no-tillage (NT) corn (Zea mays L.) production systems receiving poultry litter (PL) and ammonium nitrate (AN) fertilizers on a Decatur silt loam soil in the Tennessee Valley region of North Alabama from Spring 2008 to Fall 2009. Soil CO2 flux in CT plots (9.5 kg CO2 ha−1 day−1) was significantly greater than that in NT plots (4.9 kg CO2 ha−1 day−1 in summer. Soil CO2 fluxes were lowest in fall where CT plots had a mean soil CO2 emission of 0.8 kg CO2 ha−1 day−1, while plots under NT and grass fallow system were sinks of CO2 with fluxes −0.6 and −1.0 kg CO2 ha−1 day−1, respectively. Mean soil CO2 flux averaged over seasons in NT plots was 36% lower than that in CT plots. Grass fallow plots were net sinks of CO2 with a mean CO2 flux of −0.4 kg CO2 ha−1 day−1. Our study showed that application of PL or AN fertilizer in NT systems can significantly reduce soil CO2 emissions compared to CT systems in corn production.","PeriodicalId":50032,"journal":{"name":"Journal of Sustainable Agriculture","volume":"36 1","pages":"873 - 892"},"PeriodicalIF":0.0,"publicationDate":"2012-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10440046.2012.695330","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59669336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Moving Beyond the Dilemma: Practices that Contribute to the On-Farm Management of Agrobiodiversity 走出困境:有助于农业生物多样性农场管理的实践

Journal of Sustainable Agriculture Pub Date : 2012-06-06 DOI: 10.1080/10440046.2012.695329

W. D. de Boef, M. Thijssen, P. Shrestha, A. Subedi, R. Feyissa, G. Gezu, A. Canci, Maria Aldete Justiniano Da Fonseca Ferreira, T. Dias, S. Swain, B. Sthapit

引用次数: 17

Can Birds Be Used as Tools To Inform Resilient Farming and Environmental Care in the Development of Biodiversity-Friendly Market Accreditation Systems? Perspectives of New Zealand Sheep and Beef Farmers 在发展生物多样性友好型市场认证制度的过程中，鸟类能否成为告知抗灾农业和环境保护的工具?新西兰羊和牛肉养殖户的观点

Journal of Sustainable Agriculture Pub Date : 2012-06-06 DOI: 10.1080/10440046.2012.672375

Sarah Meadows

引用次数: 10

Peasant Innovations and the Search for Sustainability: The Case of Carnaubais Territory in Piauí State, Brazil 农民创新与可持续发展:以巴西Piauí州Carnaubais地区为例

Journal of Sustainable Agriculture Pub Date : 2012-06-01 DOI: 10.1080/10440046.2012.656342

Francisco das Chagas Oliveira, Ángel Calle Collado, Luiz Fernando Carvalho Leite

{"title":"Peasant Innovations and the Search for Sustainability: The Case of Carnaubais Territory in Piauí State, Brazil","authors":"Francisco das Chagas Oliveira, Ángel Calle Collado, Luiz Fernando Carvalho Leite","doi":"10.1080/10440046.2012.656342","DOIUrl":"https://doi.org/10.1080/10440046.2012.656342","url":null,"abstract":"This article pursues two aims. The first is to assess the degree of sustainability in peasant agroecosystems through the application of the systemic approach, allowing an integrated understanding of technical, environmental, economic, and social impacts to support the agroecological transition process; the second is to comprehend the basis farmers have and the strategies they use in locally favoring the emergence of the innovations that constitute the object of analysis. The conceptual framework used ia that of the MESMIS method, which is based on a set of system attributes for agroecosystem assessment. Results indicate that innovations made by family farmers favored improvements in essential elements of system sustainability, making possible sustainable land use, assuring an increase in income, and maintenance of family employment and farm structuring. These factors cast light on the relevance of local knowledge as a key factor in policies that promote the sustainability of family systems, and as a basis for an agroecological transition process.","PeriodicalId":50032,"journal":{"name":"Journal of Sustainable Agriculture","volume":"36 1","pages":"523 - 544"},"PeriodicalIF":0.0,"publicationDate":"2012-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10440046.2012.656342","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59669371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Managing the Pathosystem with Agroecology 用农业生态学管理病害系统

Journal of Sustainable Agriculture Pub Date : 2012-06-01 DOI: 10.1080/10440046.2012.684201

S. Gliessman

引用次数: 0

Agroecology and Shifting Paradigms 农业生态学与范式转换

Journal of Sustainable Agriculture Pub Date : 2012-06-01 DOI: 10.1080/10440046.2012.684200

S. Gliessman

引用次数: 7

A Preliminary Assessment of the Local Diversity of Family Farms Change Trajectories Since 1950 in a Pyrenees Mountains Area 1950年以来比利牛斯山区家庭农场多样性变化轨迹的初步评估

Journal of Sustainable Agriculture Pub Date : 2012-04-12 DOI: 10.1080/10440046.2012.672547

C. Rueff, J. Choisis, G. Balent, A. Gibon

{"title":"A Preliminary Assessment of the Local Diversity of Family Farms Change Trajectories Since 1950 in a Pyrenees Mountains Area","authors":"C. Rueff, J. Choisis, G. Balent, A. Gibon","doi":"10.1080/10440046.2012.672547","DOIUrl":"https://doi.org/10.1080/10440046.2012.672547","url":null,"abstract":"In agriculture and environmental sustainability research, assessment of local diversity of individual farm dynamics and farmers' behaviors appears of special interest for enlightening changes in ecological, social, and economical functions related to farming in rural communities and landscapes. It also includes challenges due to current methodology limitations. In this study, we developed a method for assessing the variety in individual change trajectories since 1950 of farms in a case study area in the Pyrenees (France). Changes in individual farms and households over the period were described at a five-year step using a set of indicators selected in reference to a social-ecological model of family farm dynamics. They were respectively categorized using a spatial-temporal multivariate analysis method. Results gained on a 24-farm sample showed four contrasted farm-development trajectories that could be related to lifecycle patterns of individual households. This opens new prospects for integrated assessment of individual farms' dynamics within a local agricultural system.","PeriodicalId":50032,"journal":{"name":"Journal of Sustainable Agriculture","volume":"55 1","pages":"564 - 590"},"PeriodicalIF":0.0,"publicationDate":"2012-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10440046.2012.672547","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59669634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 29

Explaining Farmers' Decisions to Abandon Traditional Varieties of Crops: Empirical Results from Ethiopia and Implications for On-Farm Conservation 解释农民放弃传统作物品种的决定:来自埃塞俄比亚的实证结果及其对农场保护的影响

Journal of Sustainable Agriculture Pub Date : 2012-04-11 DOI: 10.1080/10440046.2012.672379

E. Wale

引用次数: 14

Pulse Crops Improve Energy Intensity and Productivity of Cereal Production in Montana, USA 脉冲作物提高了美国蒙大拿州谷物生产的能量强度和生产力

Journal of Sustainable Agriculture Pub Date : 2012-04-10 DOI: 10.1080/10440046.2012.672380

Macdonald H. Burgess, P. Miller, Clain Jones

引用次数: 43

Cover Crop Root Composition and Density in a Long-Term Vegetable Cropping System Trial 长期蔬菜种植制度试验中覆盖作物根系组成和密度

Journal of Sustainable Agriculture Pub Date : 2012-04-10 DOI: 10.1080/10440046.2012.672548

M. Gardner, M. Sarrantonio

{"title":"Cover Crop Root Composition and Density in a Long-Term Vegetable Cropping System Trial","authors":"M. Gardner, M. Sarrantonio","doi":"10.1080/10440046.2012.672548","DOIUrl":"https://doi.org/10.1080/10440046.2012.672548","url":null,"abstract":"The contribution of cover crop roots to soil dynamics is poorly understood, in part because little information is available on the distribution, depth, chemical compositional changes over time, and nutrient mineralization rates of typical cover crop roots. A study was conducted to investigate the role of cover crop roots in a long-term trial on the effects of cover crop species and seasonal placement on soil properties in a vegetable rotation. Root length density (RLD), chemical composition, and nitrogen mineralization during incubation were measured in roots of red clover (Trifolium pratense L.) and winter rye (Secale cereale L.) of varying ages. Nearly 50% of the fine root RLD was measured in the top 5 cm for all roots, with no significant differences between species and ages. Lignin concentration in red clover roots increased nearly four-fold as they aged from 4 to 24 months, while N concentration were 22% lower in the older roots. N concentration decreased by 50% in rye roots from 0 to 9 months, leading to doubling of C:N. During incubation, net N mineralization was greater from 24 month-old red clover roots than 12-month roots, while winter rye roots showed net N immobilization over the incubation period.","PeriodicalId":50032,"journal":{"name":"Journal of Sustainable Agriculture","volume":"36 1","pages":"719 - 737"},"PeriodicalIF":0.0,"publicationDate":"2012-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10440046.2012.672548","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59669687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20