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Intensifying a crop–fallow system: impacts on soil properties, crop yields, and economics 强化作物休耕系统:对土壤性质、作物产量和经济的影响
3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1017/s1742170523000133
S. J. Ruis, S. Stepanovic, H. Blanco-Canqui
Abstract Intensifying crop–fallow systems could address increased weed control costs, increased land or rental costs, reduced crop diversity, and degraded soil properties in water-limited environments. One strategy to intensify such systems could be the insertion of a short-season crop during fallow. But, how this strategy affects soils, crop production, and farm economics needs further research. Thus, we studied the impacts of replacing fallow in a winter wheat ( Triticum aestivum L)–corn ( Zea mays L.)–fallow system with a short-season spring crop [field pea ( Pisum sativum L.)] on crop yields and economics from 2015 to 2019 and 5-yr cumulative effects on soil properties using an experiment in the west-central US Great Plains. After 5 yr, replacing fallow with field pea increased microbial biomass by 294 nmol g −1 and plant available water by 0.08 cm 3 cm −3 , and reduced bulk density by 0.1 g cm −3 and cone index by 0.73 MPa in the 0–5 cm depth. It had, however, no effect on other soil properties. Field pea yield averaged 2.24 Mg ha −1 . Field pea reduced subsequent crop yield by 15–25% in two of three crops compared with fallow. However, economic analysis showed replacing fallow with field pea may improve net income by $144–303 ha −1 , although income across the 5 yr differed by $65 ha −1 in favor of fallow. Replacing fallow in winter wheat–corn–fallow rotation with a short-season spring crop offers promise to improve some near-surface soil properties while increasing net economic return during fallow under the conditions of this study.
在水资源有限的环境中,强化作物休耕制度可以解决杂草控制成本增加、土地或租赁成本增加、作物多样性减少和土壤性质退化等问题。强化这种系统的一个策略是在休耕期间种植短季作物。但是,这种策略如何影响土壤、作物生产和农业经济还需要进一步的研究。因此,我们在美国大平原中西部进行了一项试验,研究了2015 - 2019年冬小麦(Triticum aestivum L) -玉米(Zea mays L.) -休耕系统以短季春作物[田间豌豆(Pisum sativum L.)]替代休耕系统对作物产量和经济的影响,以及对土壤性质的5年累积效应。5年后,以大田豌豆代替休耕,微生物量增加294 nmol g−1,植物有效水分增加0.08 cm 3 cm−3,0 ~ 5 cm深度的容重降低0.1 g cm−3,锥指数降低0.73 MPa。然而,它对其他土壤性质没有影响。大田豌豆产量平均为2.24 Mg ha - 1。与休耕相比,大田豌豆在三种作物中有两种使随后的作物产量减少了15-25%。然而,经济分析表明,用大田豌豆代替休耕可使净收入增加144-303公顷- 1,尽管休耕的5年收入差异为65公顷- 1。在本研究条件下,以短季春作物代替冬小麦-玉米-休耕轮作的休耕有望改善近地表土壤的一些性质,同时增加休耕期间的净经济收益。
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引用次数: 1
Does grazing winter cereal rye in Iowa, USA, make it profitable? 在美国爱荷华州放牧冬季黑麦是否有利可图?
3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1017/s1742170523000388
A. Plastina, J. Acharya, F. M. Marcos, M. R. Parvej, M. A. Licht, A. E. Robertson
Unproven economic returns at the farm level are a major barrier to large-scale adoption of cover crops. The objective of this study was to evaluate the short-run private net returns to producers implementing a cereal rye ( Secale cereale L.) cover crop preceding the no-till corn ( Zea mays L.) phase of a US Midwest corn–soybean ( Glycine max [L.] Merr.) rotation in an integrated crop and cow–calf operation. We used experimental agronomic data from six location-years in Iowa to estimate private net returns to cereal rye across alternative scenarios in a partial budget framework. Net returns in the absence of grazing averaged −$123.74 ha −1 and were negative for 82.2% of the treatments, while net returns under partial grazing averaged −$15.24 ha −1 and were negative for 54.8% of the treatments. Early-broadcast cereal rye produced higher biomass and larger net cost savings in the livestock enterprise than late-drilled cereal rye, but it also resulted in higher corn yield penalties. In the no-grazing scenario, net losses for early-broadcast cereal rye were $165.97 ha −1 larger, on average, than for late-drilled cereal rye. Our findings should raise awareness about the low probability of obtaining positive annual private net returns to cereal rye in Iowa in the absence of sizable targeted financial incentives, and inform the policy discussion on the cost-effectiveness of government-sponsored conservation programs.
农场层面未经证实的经济回报是大规模采用覆盖作物的主要障碍。本研究的目的是评估在美国中西部玉米-大豆(Glycine max [L.])免耕玉米(Zea mays L.)阶段之前实施谷物黑麦(Secale cereale L.)覆盖作物的生产者的短期私人净回报。在作物和小牛的综合经营中轮作。我们使用爱荷华州6个地点年的试验农艺数据,在部分预算框架下估算不同方案下谷物黑麦的私人净回报。在不放牧的情况下,净收益平均为- 123.74 ha - 1, 82.2%的处理为负,而在部分放牧的情况下,净收益平均为- 15.24 ha - 1, 54.8%的处理为负。在畜牧业中,早播黑麦比晚播黑麦产生了更高的生物量和更大的净成本节约,但也导致了更高的玉米产量损失。在不放牧情况下,早播黑麦的净损失平均为165.97公顷- 1,比晚播黑麦大。我们的研究结果应该提高人们对爱荷华州谷物黑麦在缺乏可观的目标财政激励的情况下获得正年度私人净回报的可能性很低的认识,并为政府资助的保护计划的成本效益的政策讨论提供信息。
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引用次数: 0
Pollination practices and grower perceptions of managed bumble bees (Bombus spp.) as pollinators of cranberry in Quebec and Wisconsin 在魁北克和威斯康辛州,作为蔓越莓传粉者的管理大黄蜂(Bombus spp.)的授粉实践和种植者的看法
3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1017/s1742170523000352
Nolan D. Amon, Monica Quezada, Didier Labarre, Christelle Guédot
Abstract Globally, honey bees are the most utilized animal pollinator in agriculture. However, fluctuations in honey bee colony availability have led to a demand for diversification among crop pollinators. Managed bumble bees are commercially available and highly efficient at pollinating many crops, including cranberries, yet utilization of these managed bees has remained relatively low in North America, with the cranberry industry remaining heavily reliant on honey bees. Here, we surveyed growers from Wisconsin (WI) and Quebec (QC), two of the world's largest cranberry producers, to assess their current crop pollination practices and attitudes regarding managed bumble bees as crop pollinators. To this end, we inquired about their farm demographics, usage of pollination practices, factors influencing those pollination practices, sources of information on crop pollination, and perceptions of managed bumble bees. QC respondents placed a greater importance on their relationships with beekeepers than WI respondents, while WI respondents were more concerned about fruit quality than QC respondents. QC respondents also stocked bumble bees and planted pollinator gardens at a higher percentage than WI respondents, believed that honey bees are more efficient pollinators of cranberry than bumble bees, and a greater proportion of QC respondents reported feeling well informed about bumble bees compared to WI respondents. Importantly, respondents in both regions rank bumble bees' ability to pollinate in inclement weather as their greatest benefit, and the costs of bumble bees as the greatest barrier to their use. We propose that trusted sources of pollination information in both regions, including university specialists, crop consultants, and beekeepers, are well suited to clarify misconceptions regarding bumble bee pollination.
在全球范围内,蜜蜂是农业中利用最多的传粉动物。然而,蜂群可用性的波动导致了作物传粉媒介多样化的需求。有管理的大黄蜂在商业上是可用的,在为包括蔓越莓在内的许多作物授粉方面效率很高,但在北美,这些有管理的蜜蜂的利用率仍然相对较低,蔓越莓产业仍然严重依赖蜜蜂。在这里,我们调查了威斯康星州(WI)和魁北克省(QC)的种植者,这两个世界上最大的蔓越莓生产商,以评估他们目前的作物授粉实践和对管理大黄蜂作为作物授粉者的态度。为此,我们询问了他们的农场人口统计、授粉实践的使用情况、影响这些授粉实践的因素、作物授粉信息的来源以及对管理大黄蜂的看法。QC受访者比WI受访者更重视他们与养蜂人的关系,而WI受访者比QC受访者更关心水果质量。QC受访者还以比WI受访者更高的比例饲养了大黄蜂和种植了传粉者花园,他们认为蜜蜂比大黄蜂更有效地为蔓越莓授粉,与WI受访者相比,QC受访者中有更大比例的人表示对大黄蜂有更充分的了解。重要的是,这两个地区的受访者都认为大黄蜂在恶劣天气下授粉的能力是他们最大的利益,而大黄蜂的成本是使用它们的最大障碍。我们建议,这两个地区值得信赖的授粉信息来源,包括大学专家、作物顾问和养蜂人,都非常适合澄清关于大黄蜂授粉的误解。
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引用次数: 0
Geospatial characteristics of allotment garden provision in Tokyo 东京都分配花园供应的地理空间特征
3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1017/s1742170523000376
Keidai Kishimoto, Wanglin Yan
Abstract Allotment gardens (AGs), one of the most popular forms of urban agriculture (UA), have attracted social attention because of the ecosystem services they provide to citizens. However, the services and availability of AGs may be unevenly distributed, owing to their geographic location. The patterns underlying the provision of AG plots and facilities to users in Tokyo are unclear. Thus, this study quantitatively examines the characteristics of different types of AG provision and their determinants in the metropolitan region of Tokyo. We classified a sample of 313 AGs gathered from governmental open data via a non-hierarchical cluster analysis of AG provision patterns based on their properties, including number of plots, plot size, contract price and duration, and facilities such as agricultural equipment and access to instructors. Moreover, we examined the influence of urban development and residential characteristics on these classes using the Kruskal–Wallis test. The analysis identifies six AG provision patterns based on their properties. It also revealed that AG provision in Tokyo was differentiated by the percentage of agricultural land and the socio-demographic characteristics of residents, including population, percentage of young population, and income levels from the city center to the suburban areas, corresponding to urban sprawl. These findings could provide valuable insights to help local governments, farmers, and non-profit organizations address the challenges and opportunities arising from each AG provision pattern and to make AG plots and facilities more adaptable to upcoming urban shrinkage, business opportunities, and possible excessive subdivision and price hikes.
摘要分配花园(AGs)是城市农业(UA)最流行的形式之一,因其为市民提供的生态系统服务而引起了社会的关注。然而,由于地理位置的原因,AGs的服务和可用性可能分布不均匀。东京向用户提供AG地块和设施的模式尚不清楚。因此,本研究定量地考察了东京大都市区不同类型农业供应的特征及其决定因素。通过对政府公开数据中收集的313个农用地提供模式的非分层聚类分析,我们根据农用地的性质,包括地块数量、地块大小、合同价格和期限,以及农用设备和教师等设施,对农用地提供模式进行了分类。此外,我们使用Kruskal-Wallis检验了城市发展和居住特征对这些类别的影响。该分析根据其属性确定了六种AG供应模式。该研究还发现,东京的农业用地比例和居民的社会人口特征(包括人口、年轻人口比例和从市中心到郊区的收入水平)与城市扩张相对应,从而区分了农业用地的供应。这些发现可以提供有价值的见解,帮助地方政府、农民和非营利组织应对各种农业供应模式带来的挑战和机遇,并使农业用地和设施更适应即将到来的城市萎缩、商业机会、可能的过度细分和价格上涨。
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引用次数: 0
Using three consecutive years of farmer survey data to identify prevailing conservation practices in four Midwestern US states 使用连续三年的农民调查数据来确定美国中西部四个州的普遍保护措施
3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1017/s1742170523000364
Tian Guo, Sandra T. Marquart-Pyatt, G. Philip Robertson
Abstract Granular temporal and spatial scale observations of conservation practices are essential for identifying changes in the production systems that improve soil health and water quality and inform long-term agricultural research and adaptive policy development. In this study, we demonstrate an innovative use of farmer practice survey data and what can be uniquely known from a detailed survey that targets specific farm groups with a regional focus over multiple consecutive years. Using three years of survey data ( n = 3914 respondents), we describe prevailing crop rotation, tillage, and cover crop practice use in four Midwestern US states. Like national metrics, the results confirm dominant practices across the landscape, including corn-soybean rotation, little use of continuous no-till, and the limited use of cover crops. Our detailed regional survey further reveals differences by state for no-till and cover crop adoption rates that were not captured in federal datasets. For example, 66% of sampled acreage in the Midwest has corn and soybean rotation, with Illinois having the highest rate (72%) and Michigan the lowest (41%). In 2018, 20% of the corn acreage and 38% of the soybean acreage were in no-till, and 13% of the corn acres and 9% of the soybean acres were planted with a cover crop. Cover crop adoption rates fluctuate from year to year. Results demonstrate the value of a farmer survey at state scales over multiple years in complementing federal statistics and monitoring state and yearly differences in practice adoption. Agricultural policies and industry heavily depend on accurate and timely information that reflects spatial and temporal dynamics. We recommend building an agricultural information exchange and workforce that integrates diverse data sources with complementary strengths to provide a greater understanding of agricultural management practices that provide baseline data for prevailing practices.
保护措施的粒度时空尺度观测对于识别生产系统中改善土壤健康和水质的变化以及为长期农业研究和适应性政策制定提供信息至关重要。在本研究中,我们展示了对农民实践调查数据的创新使用,以及从连续多年针对特定农场群体的区域重点的详细调查中可以获得的独特信息。利用三年的调查数据(n = 3914名受访者),我们描述了美国中西部四个州普遍的作物轮作、耕作和覆盖作物的实践使用。与国家指标一样,结果证实了整个景观的主导做法,包括玉米-大豆轮作、很少使用连续免耕和有限使用覆盖作物。我们详细的区域调查进一步揭示了各州在免耕和覆盖作物采用率方面的差异,这些差异未被纳入联邦数据集。例如,中西部地区66%的取样面积采用玉米和大豆轮作,其中伊利诺伊州的比例最高(72%),密歇根州最低(41%)。2018年,20%的玉米种植面积和38%的大豆种植面积实行免耕,13%的玉米种植面积和9%的大豆种植面积实行覆盖作物。覆盖作物采用率每年都在波动。结果表明,多年来对各州农民进行的调查在补充联邦统计数据和监测各州和年度实践采用差异方面的价值。农业政策和工业在很大程度上取决于反映时空动态的准确和及时的信息。我们建议建立农业信息交流和劳动力队伍,整合具有互补优势的各种数据源,以便更好地了解农业管理实践,为普遍做法提供基线数据。
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引用次数: 0
Perceptions of genetically modified and bioengineered organisms and corresponding food labels among undergraduate students at Binghamton University 宾厄姆顿大学本科生对转基因和生物工程生物及相应食品标签的认知
IF 2.7 3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2022-12-22 DOI: 10.1017/S1742170522000400
Rachel D. Marcus, S. Velardi
Abstract In January 2020, the United States implemented a federal bioengineered labeling standard for food products that contain genetically modified material set to go into effect in January 2022. This bioengineered label indicates which products contain detectable levels of genetic material that have been modified through lab techniques that cannot be achieved in nature. An already existing alternative to the bioengineered label is the Non-GMO Project verified label which has been on the market since 2007, and indicates products free of genetically modified material through lab techniques. As consumers are now confronted with multiple labels pertaining to information related to genetic engineering, it is important to understand how people interpret these labels as it can lead to a greater understanding of how they inform consumer choice. We conducted a survey with 153 biology and environmental studies undergraduate students at Binghamton University in Binghamton, New York, asking questions about participants' views on genetically modified organisms (GMOs) and related terminology, corresponding food labels and how these labels influence their purchasing decisions. Results demonstrated a lack of awareness of the bioengineered label compared to the Non-GMO Project verified label. Additionally, individuals associated ‘bioengineered’ and ‘genetically modified’ with differing themes, where ‘bioengineered’ was more often associated with a scientific theme and ‘genetically modified’ was more often associated with an agricultural theme. There was also a discrepancy in how individuals said these labels influenced their purchases vs how the labels actually influenced purchasing decisions when participating in choice experiments. While the majority of participants reported that neither the Non-GMO Project verified label nor the bioengineered label influenced their purchasing decisions, in choice experiments, the majority of respondents chose products with the Non-GMO Project verified label. This study can give insight into overall perceptions of different terminologies associated with genetic engineering, in addition to how these labels are interpreted by consumers, and how they could affect purchasing decisions with the implementation of the new bioengineered label.
摘要2020年1月,美国对含有转基因材料的食品实施了联邦生物工程标签标准,该标准将于2022年1月生效。这种生物工程标签表明,哪些产品含有可检测水平的遗传物质,这些物质通过实验室技术进行了改造,而在自然界中是无法实现的。生物工程标签的一个现有替代品是非转基因项目验证标签,该标签自2007年以来一直在市场上销售,通过实验室技术表明产品不含转基因材料。由于消费者现在面临着与基因工程相关信息的多个标签,了解人们如何解读这些标签很重要,因为这可以让人们更好地了解它们如何为消费者的选择提供信息。我们对纽约宾厄姆顿宾厄姆顿大学的153名生物学和环境研究本科生进行了一项调查,询问了参与者对转基因生物和相关术语的看法、相应的食品标签以及这些标签如何影响他们的购买决定。结果表明,与非转基因项目验证的标签相比,对生物工程标签缺乏认识。此外,个体将“生物工程”和“转基因”与不同的主题联系起来,其中“生物工程化”更经常与科学主题联系在一起,而“转基因”则更经常与农业主题联系在。在参与选择实验时,个人所说的这些标签如何影响他们的购买,与标签实际如何影响购买决策也存在差异。虽然大多数参与者报告说,非转基因项目验证标签和生物工程标签都不会影响他们的购买决定,但在选择实验中,大多数受访者选择了具有非转基因项目认证标签的产品。这项研究可以深入了解与基因工程相关的不同术语的总体看法,以及消费者如何解释这些标签,以及它们如何随着新的生物工程标签的实施而影响购买决策。
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引用次数: 0
How about choosing environmentally friendly beef? Exploring purchase intentions among Italian consumers 选择环保牛肉怎么样?探索意大利消费者的购买意愿
IF 2.7 3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2022-12-21 DOI: 10.1017/S1742170522000357
S. Stranieri, E. Ricci, Alice Stiletto, S. Trestini
Abstract The increasing global demand for livestock products and its large environmental impact ask for urgent policy and managerial strategies. With regard to meat consumption, feasible actions relate to its reduction and orienting consumers toward more sustainable meat choices. The aim of the study is to investigate the determinants affecting meat consumers in their intention to buy beef whose label clearly expresses environmentally friendly characteristics. To do so, we hypothesized to apply an institutional system of ecological labeling on beef products. An extended framework based on the Theory of Planned Behavior was applied to understand the factors affecting the consumer decision-making process toward eco-labeled beef. A survey was conducted with 1139 consumers in Italy. Data were analyzed by means of confirmatory factor analysis and structural equation models. Results highlight that beef consumers are likely to change their habits, in favor of more sustainable beef choices. The analysis highlights that, together with consumer attitudes, social norms and perceived behavioral control, institutional trust and food shopping habits play an important role in activating the consumer's cognitive decision-making process toward more sustainable beef. Results add to the literature on the determinants of green food-choices and introduce new insights on the role of institutional trust in the intention to buy beef labeled with a public standard. Findings highlight that particular attention should be devoted to build trust for public institutions in order to promote sustainable food consumption behavior. Moreover, results validate previous studies on the effectiveness of information-based policies in fostering more sustainable consumption choices.
摘要全球对畜产品的需求不断增加及其对环境的巨大影响,迫切需要制定政策和管理战略。关于肉类消费,可行的行动涉及减少肉类消费,并引导消费者选择更可持续的肉类。这项研究的目的是调查影响肉类消费者购买标签明确表达环保特征的牛肉意向的决定因素。为此,我们假设在牛肉产品上应用生态标签的制度体系。应用基于计划行为理论的扩展框架来理解影响消费者对生态标签牛肉决策过程的因素。对意大利1139名消费者进行了调查。采用验证性因素分析和结构方程模型对数据进行分析。结果表明,牛肉消费者可能会改变他们的习惯,转而选择更可持续的牛肉。分析强调,除了消费者态度、社会规范和感知的行为控制外,机构信任和食品购物习惯在激活消费者对更可持续牛肉的认知决策过程中发挥着重要作用。研究结果增加了关于绿色食品选择决定因素的文献,并为机构信任在购买标有公共标准的牛肉的意图中的作用提供了新的见解。调查结果强调,应特别关注建立对公共机构的信任,以促进可持续的食品消费行为。此外,研究结果验证了先前关于基于信息的政策在促进更可持续的消费选择方面的有效性的研究。
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引用次数: 2
Pro-environmental diversification of pasture-based dairy and beef production in Ireland, the United Kingdom and New Zealand: a scoping review of impacts and challenges 爱尔兰、联合王国和新西兰牧场奶制品和牛肉生产的环保多样化:影响和挑战的范围审查
IF 2.7 3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2022-12-21 DOI: 10.1017/S1742170522000382
M. Markiewicz-Kęszycka, Aileen Carter, D. O'Brien, M. Henchion, S. Mooney, P. Hynds
Abstract Milk and beef derived from pasture-based systems have been characterized by higher nutritional values and a lower environmental footprint than their equivalents obtained via indoor systems. However, intensification of pasture-based production can have adverse impacts on biodiversity and the environment. To date, studies on pro-environmental diversification options leading to improvement of environmental performance of pasture-based dairy and beef production have rarely been synthesized. The present study sought to review current on-farm pro-environmental measures with the potential for enhancing biodiversity status and/or reducing the environmental impacts of pasture-based agriculture. Literature on farmer attitudes toward these measures was also reviewed to identify potential obstacles and opportunities for transitioning to pro-environmental agriculture. A systematic search of published research from high-income island countries characterized by oceanic temperate climate with a high dependence on pasture-based agriculture—the Republic of Ireland, the United Kingdom and New Zealand, was conducted. Thirty studies that assessed the impact of pro-environmental measures, eight ‘attitudinal’ studies of dairy and beef farmers and one study covering both aspects were identified. Inductive thematical analysis was subsequently undertaken. Environmentally sensitive management practices such as hedgerows and field margins management, mixed grazing (where two or more herbivorous animals graze the same land), rare livestock breeds, multispecies swards, organic farming and agroforestry were identified as primary themes studied under the auspices of pro-environmental diversification, while forestry, bioenergy crops and organic farming were the main themes identified within attitudinal research studies. Findings suggest that environmentally sensitive practices have varied effects on biodiversity. Mixed grazing was found to improve livestock production, while studies of organic farming reported multiple positive impacts on biodiversity and animal welfare. Effect of multispecies swards on methane emissions and urinary nitrogen extraction were found to be inconsistent. Attitudinal research suggests that the main barrier to implementing afforestation is its lack of attractiveness compared to ‘traditional’ farming and that organic farmer decisions regarding agricultural management practices might be less profit-oriented and influenced by ecological beliefs to a greater extent than decisions of conventional farmers. The results of this study confirm that pro-environmental diversification inherently encompasses multiple scientific disciplines; however, previous study designs and outcomes were found to be fragmented and narrowly focused. Considering the urgency and importance of climate and biodiversity crises, pro-environmental diversification of pasture-based dairy and beef production has rarely been holistically approached and remains understudied. The devel
摘要牧场系统生产的牛奶和牛肉的特点是,与通过室内系统生产的同等产品相比,它们具有更高的营养价值和更低的环境足迹。然而,牧场生产的集约化可能对生物多样性和环境产生不利影响。迄今为止,很少有人综合研究有利于环境的多样化选择,以改善牧场奶制品和牛肉生产的环境绩效。本研究旨在审查目前的农场环保措施,这些措施有可能提高生物多样性状况和/或减少牧场农业对环境的影响。还审查了关于农民对这些措施态度的文献,以确定向环保农业过渡的潜在障碍和机会。对爱尔兰共和国、英国和新西兰等以海洋温带气候为特征、高度依赖牧场农业的高收入岛国的已发表研究进行了系统检索。确定了30项评估环保措施影响的研究、8项对奶农和牛肉农的“态度”研究以及一项涵盖这两个方面的研究。随后进行了归纳专题分析。对环境敏感的管理做法,如树篱和田缘管理、混合放牧(两种或两种以上草食性动物在同一土地上放牧)、稀有牲畜品种、多品种草地、有机农业和农林业,被确定为在有利于环境的多样化的主持下研究的主要主题,生物能源作物和有机农业是态度研究中确定的主要主题。研究结果表明,对环境敏感的做法对生物多样性有不同的影响。混合放牧被发现可以改善牲畜生产,而有机农业的研究报告对生物多样性和动物福利产生了多重积极影响。多物种草地对甲烷排放和尿氮提取的影响不一致。态度研究表明,与“传统”农业相比,实施植树造林的主要障碍是缺乏吸引力,有机农民关于农业管理实践的决策可能不那么以利润为导向,在很大程度上受到生态信仰的影响。这项研究的结果证实,有利于环境的多样化本质上包括多个科学学科;然而,先前的研究设计和结果被发现是零散的,关注范围很窄。考虑到气候和生物多样性危机的紧迫性和重要性,很少对牧场奶制品和牛肉生产的环保多样化进行全面研究,而且研究不足。决策者、咨询机构和科学机构应优先考虑在循环经济和尊重自然的基础上制定切实可行的可持续农业解决方案,以及提高农民和消费者环境意识的额外战略。
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引用次数: 3
Fall-sown small grain cover crops for weed suppression and soil moisture management in an irrigated organic agroecosystem 灌溉有机农业生态系统秋播小粒覆盖作物的杂草抑制和土壤水分管理
IF 2.7 3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2022-12-19 DOI: 10.1017/S174217052200028X
R. Pratt, B. Schutte, O. Idowu, M. Uchanski, Lois Grant
Abstract 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.
摘要干旱农业生态系统中覆盖作物的采用一直很缓慢,因为人们担心水资源有限和土壤水分可能耗尽。在灌溉有机系统中,还必须考虑到对水资源保护的关注,考虑覆盖作物的潜在生态系统服务。秋季播种的小型粮食覆盖作物可以实现建设性的平衡;然而,人们对其对灌溉有机系统的影响知之甚少。我们的第一个目标是确定秋季播种的小谷物[谷类黑麦(Secale cereale L)、冬小麦(Triticum aestivum L.)、大麦(Hordeum vulgare L.)和燕麦(Avena sativa L.)]在美国西南部灌溉的有机过渡田中抑制冬季杂草的能力。前A.W.Hill)。2013年春季和2014年春季,在每种覆盖作物处理中确定了杂草密度和生物量,并与未种植的对照进行了比较。结果表明,大麦和燕麦均能有效地抑制冬季杂草。我们的第二个目标是比较美国西部开发的七个大麦品种的杂草抑制和土壤水分水平。大麦品种(“Rivat”、“Hayes Beardles”、“P919”、“Robust”、《UC603》、《UC937》、《Washford Beardles》)于2016年秋季在复制条形地块中进行了秋季播种。2017年春季测量了杂草密度,并在2016年12月至2017年3月的时间间隔测量了土壤表面附近(5.1厘米深)的体积土壤湿度。除“UC937”外,与未种植的对照相比,大麦品种的杂草密度显著降低。未播种对照的土壤水分含量始终低于大麦地块的土壤水分。大麦品种不影响土壤体积水分。在2017年至2018年的生长季节,我们重新检查了三个被认为最符合种植制度要求的大麦品种(“稳健”、“UC603”和“P919”),再次发现这些品种支持很少的杂草(≤5.0杂草m−2)。我们得出的结论是,几种有机认证的大麦品种可以满足美国西南部灌溉有机系统中抑制冬季杂草的“非干旱”覆盖作物的需求。
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引用次数: 0
Agroecological and agroforestry strategies to improve organic hibiscus productivity in an Indigenous non-governmental organization from Mexico 墨西哥土著非政府组织提高有机木槿生产力的农业生态和农林业战略
IF 2.7 3区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2022-12-19 DOI: 10.1017/S1742170522000369
A. Silva-Galicia, J. Larsen, R. Álvarez-Espino, E. Ceccon
Abstract La Montaña region, in southern Mexico, is characterized as a highly human-modified landscape with a rough topography, extreme poverty and structural violence. In this region, Xuajin Me'Phaa, an Indigenous non-governmental organization conformed by ca. 300 peasants, implements productive restoration projects and trades organic hibiscus (Hibiscus sabdariffa L.) as its main monetary income. Nonetheless currently, organic hibiscus yield is low compared to the potential yields in the region. Thus, it is necessary to explore alternative sustainable land management systems which enable farmers to increase hibiscus crop productivity, while halting land degradation. This study assessed the impact of six different agroecological fertilization protocols (AFPs) on hibiscus productivity planted in an alley cropping system with Calliandra houstoniana trees. The AFPs were based on the combination of three local plant amendments: C. houstoniana mulch, Mucuna pruiriens var. utilis green manure and hibiscus stover, and a commercial bio-fertilizer (Azospirillum + Rhizophagus). Simultaneously, the performance of C. houstoniana trees was assessed. The AFPs were applied in the alley cropping system and evaluated from 2016 to 2018. After 3 years, in the AFPs which included C. houstoniana mulch, hibiscus yielded significantly more (419 ± 27 kg dry calyxes ha−1 in average) than AFPs which did not include this species (264 ± 15 kg ha−1). The 18-month-old C. houstoniana trees yielded 0.6 t ha−1 of dry biomass and 1.12 t ha−1 of wooden stakes, a relatively low production. In conclusion, our results show that alley cropping with a denser arrangement of C. houstoniana trees in combination with mulching of this tree species, and use of mucuna green manure represent a promising agroforestry system for organic hibiscus production.
La Montaña地区位于墨西哥南部,其特点是高度人为改造的景观,地形崎岖,极端贫困和结构暴力。在该地区,由大约300名农民组成的土著非政府组织“Xuajin Me'Phaa”实施生产性恢复项目,并以有机木槿(hibiscus sabdariffa L.)作为主要的货币收入。尽管如此,目前有机木槿的产量与该地区的潜在产量相比仍然很低。因此,有必要探索可替代的可持续土地管理系统,使农民能够提高木槿作物的生产力,同时阻止土地退化。本研究评估了六种不同的农业生态施肥方案(AFPs)对褐花花木混作系统中木槿生产力的影响。AFPs是基于三种当地植物改良物的组合:C. houstoniana地膜、Mucuna pruriens vari . utilis绿肥和木槿秸秆,以及一种商业生物肥料(Azospirillum + Rhizophagus)。同时,还对休斯顿树的生长性能进行了评价。在2016 - 2018年进行了田间试验,并进行了评价。3年后,在覆盖了休士顿花的AFPs中,木槿的干花萼产量(平均419±27 kg)显著高于未覆盖休士顿花的AFPs(平均264±15 kg)。18月龄的休士顿树的干生物量为0.6 t ha - 1,木桩产量为1.12 t ha - 1,产量较低。综上所述,旱地种植密集布置的褐木槿配以地膜覆盖,以及施用黏液绿肥是一种很有前途的有机木槿农林复合生产系统。
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Renewable Agriculture and Food Systems
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