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Management Options for Organic Winter Wheat Production under Climate Change 气候变化下有机冬小麦生产的管理选择
Q3 Agricultural and Biological Sciences Pub Date : 2016-04-19 DOI: 10.12924/OF2016.02010001
R. Bloch, J. Heß, J. Bachinger
An effective adaptive strategy for reducing climate change risks and increasing agro-system resiliency is broadening cropping system diversity, heightening the flexibility of cultivation and tillage methods. Climate change impacts on standard cultivation practices such as mineralisation and nitrate leaching due to mild and rainy winters, as well as frequent drought or water saturation, not only limiting fieldwork days, but also restricting ploughing. This calls for alternative methods to counteract these propensities. From 2010 to 2013, a farming system experiment was conducted on a distinctly heterogeneous organic farm in Brandenburg, Germany. With the intention of devising a more varied and flexible winter wheat cultivation method, standard organic farming practices (winter wheat cultivation after two years of alfalfa-clover-grass and ploughing in mid-October) were compared to four alternative test methods, which were then evaluated for their robustness and suitability as adaptive strategies. Two of the alternative methods, early sowing and catch crop , entailed moving up the date for alfalfa-clover-grass tilling to July. Instead of a plough, a ring-cutter was used to shallowly (8 cm) cut through and mix the topsoil. In the early sowing test method, winter wheat was sown at the end of August, after repeated ring-cutter processing. With the catch crop method, winter wheat seeding followed a summer catch crop and October tillage. The two oat methods ( oat/plough ; oat/ring-cutter ) entailed sowing winter wheat in September, following oat cultivation. Overall, the cultivation methods demonstrated the following robustness gradation: standard practice = catch crop ≥ early sowing > oat/plough > oat/ring-cutter . When compared to standard procedures, the catch crop and early sowing test methods showed no remarkable difference in grain yields. Measured against early sowing , the catch crop test method was significantly more robust when it came to winterkill, quality loss, and weed infestation (40% lower weed-cover). High N min- values (up to 116 kg N ha -1 ) in autumn could have caused the chamomile and thistle infestation in both oat/plough oat/ring-cutter test methods, which led to crop failure in the hollows. Compared to standard practices, the oat ring-cutter test method brought in over 50% less grain yield. This was attributed to ring-cutter processing, which reduced N mineralisation and caused high weed infestation. However, the ring-cutter effectively regulated alfalfa-clover-grass fields in both exceedingly wet and very dry weather; a temporal flexibility which increases the number of fieldwork days. The catch crop and early sowing test methods contributed most to boosting future agronomic diversity.
减少气候变化风险和提高农业系统抗灾能力的有效适应战略是扩大种植系统多样性,提高耕作和耕作方法的灵活性。由于冬季温和多雨,以及频繁的干旱或水分饱和,气候变化对矿化和硝酸盐浸出等标准耕作方式产生了影响,不仅限制了田间工作时间,而且限制了耕作。这就需要其他方法来抵消这些倾向。2010 - 2013年,在德国勃兰登堡州一个具有明显异质性的有机农场进行了耕作制度试验。为了设计一种更加多样化和灵活的冬小麦种植方法,将标准有机耕作方法(苜蓿-三叶草-草种种植两年并在10月中旬耕作)与四种替代试验方法进行了比较,然后评估了它们作为适应性策略的稳健性和适用性。其中两种替代方法,早播和收割作物,需要将苜蓿-三叶草-草的耕作日期提前到7月。不用犁,而是用环切器浅切(8厘米)并混合表层土。在早播试验方法中,冬小麦在8月底播种,经过多次环切加工。采用捕收作物法,冬小麦播种后夏收作物和十月耕作。两种燕麦方法(燕麦/犁;燕麦(环切)需要在9月份播种冬小麦,之后是燕麦种植。总体而言,栽培方法表现出以下稳健性等级:标准做法=捕获作物≥早播>燕麦/犁>燕麦/环切。与标准方法相比,捕茬和早播试验方法在籽粒产量上无显著差异。与早播相比,在冬杀、质量损失和杂草侵染(杂草覆盖减少40%)方面,捕获作物试验方法明显更有效。秋季高氮最小值(高达116 kg N ha -1)可能在燕麦/犁燕麦/环切试验方法中引起洋甘菊和蓟侵食,导致洼地作物歉收。与标准做法相比,燕麦环切试验方法使谷物产量降低50%以上。这是由于环形切割加工,减少了N矿化,导致杂草丛生。然而,环切器在极湿和极干的天气下都能有效地调节苜蓿-三叶草田;时间上的灵活性增加了实地工作的天数。捕获作物和早播试验方法对提高未来农艺多样性贡献最大。
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引用次数: 2
Exploring the Feasibility of Using Silage-Based Feed with Alternative Sources of Protein in Organic Pig Rations 探讨有机猪饲料中青贮饲料替代蛋白质来源的可行性
Q3 Agricultural and Biological Sciences Pub Date : 2015-11-05 DOI: 10.12924/OF2015.01010050
R. Clements, L. Higham, Jo U. Smith, C. Gerrard, Mike C. Colley, K. Zaralis, Rebecca Nelder, B. Pearce, A. Rayner, A. Bright
Current regulations for organic pig and poultry production systems permit feed ingredients of non-organic origin at an inclusion rate of up to 5 per cent. This is primarily due to concerns that there is an insufficient supply of organic protein on the European Union market, in terms of quality and quantity, to meet the nutritional requirements of pigs and poultry raised on organic farms. However, 100 per cent organic diets for monogastric livestock will become compulsory in the EU from 1 January 2018, and there is therefore a need to develop sustainable feeding strategies based on organic feeds. This feed trial conducted in the UK explores the feasibility of using a silage-based feeding system for Gloucester Old Spot pigs, and compares the inclusion of soya, beans and peas as protein sources in terms of pig growth performance. No significant difference in the pen mean daily live weight gain was observed during the grower phase (pen mean age of 11-14 weeks) between the diet groups. However, during the finisher phase (pen mean age of 15-22 weeks), pigs on the soya and pea rations had significantly faster growth rates than pigs fed the bean ration. It is speculated that the slight shortfall in growth rate observed in the pigs fed the bean ration may be offset by the lower cost of production of beans in the UK. This feasibility trial demonstrates that a 100 per cent organic diet for pigs using alternative, locally-grown sources of protein as part of a forage-based ration can provide a viable alternative to a soya-based diet.
目前的有机猪和家禽生产系统法规允许非有机来源的饲料成分的掺入率高达5%。这主要是因为人们担心欧盟市场上的有机蛋白质供应在质量和数量上都不足,无法满足有机农场饲养的猪和家禽的营养需求。然而,自2018年1月1日起,欧盟将强制要求单胃牲畜使用100%有机饲料,因此有必要制定基于有机饲料的可持续喂养策略。在英国进行的饲料试验探讨了Gloucester Old Spot猪使用青贮饲料系统的可行性,并比较了大豆、豆类和豌豆作为蛋白质来源对猪生长性能的影响。生长期(平均年龄11-14周龄)各组仔猪平均日增重无显著差异。然而,在育肥期(平均栏龄15-22周龄),大豆和豌豆日粮的生长率显著高于豆类日粮。据推测,饲喂豆类日粮的猪的生长速度略有下降,这可能被英国较低的豆类生产成本所抵消。这项可行性试验表明,100%有机饲粮的猪使用替代,当地种植的蛋白质来源作为饲料基础日粮的一部分,可以提供一个可行的替代大豆为基础的日粮。
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引用次数: 0
A Review of 'Crop Protection in Medieval Agriculture. Studies in Pre-Modern Organic' 中世纪农业作物保护研究述评。前现代有机研究
Q3 Agricultural and Biological Sciences Pub Date : 2015-10-07 DOI: 10.12924/OF2015.01010046
M. Pautasso
This brilliant and original book by Jan Zadoks, a renowned, prolific and polyglot Dutch plant epidemiologist [2], provides a systematic, learned and well-structured overview of our understanding of medieval crop protection in Europe.
Jan Zadoks是一位著名的、多产的、精通多种语言的荷兰植物流行病学家,他的这本精彩的原创著作为我们对欧洲中世纪作物保护的理解提供了一个系统的、博学的、结构良好的概述。
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引用次数: 1
100% Organic Poultry Feed: Can Algae Replace Soybean Expeller in Organic Broiler Diets? 100%有机家禽饲料:有机肉鸡饲粮中藻类能否替代大豆?
Q3 Agricultural and Biological Sciences Pub Date : 2015-05-07 DOI: 10.12924/OF2015.01010038
C. Gerrard, Jo U. Smith, Rebecca Nelder, A. Bright, Mike C. Colley, R. Clements, B. Pearce
Current EU regulations allow 5% of feed for organic poultry to come from non-organic production. This is due to concerns about a 100% organic diet meeting the requirements for specific amino acids such as methionine. This exception is due to end on 31st December 2017. While this may match consumer expectations, protein sourced from global organic production may have a negative impact on perceptions of organic poultry in other ways. Soybean is a commonly used ingredient in poultry feed but soybean production has negative environmental and social impacts. Consumers may also prefer organic poultry to have been fed on locally produced feed and, indeed, this would be in line with organic principles. Preliminary feasibility feed trials were carried out during a summer and a winter season using organic broilers in the UK to test three 100% organic feeds: a control diet with globally sourced ingredients including soybean expeller, a diet based on locally sourced (i.e. within Europe) organic ingredients, and a diet based on locally sourced organic ingredients and algae (a good source of methionine). The results of the summer feed trial showed that there were no significant differences in broiler weight gains. In the winter feed trial differences were found. There was a significant difference ( P = 0.034) in weight gain between the local feed (lower weight gain) and the local feed with algae but no significant difference between the control diet with soybean and the two local diets. These preliminary feed trials indicate that there is no significant impact on broiler performance or animal welfare parameters when replacing soybean with European protein sources, possibly including algae, suggesting that, although the research is still at a very early stage, such feeds may be a viable option for 100% organic poultry feed in the future.
目前欧盟法规允许5%的有机家禽饲料来自非有机生产。这是由于对100%有机饮食满足特定氨基酸如蛋氨酸要求的担忧。该例外将于2017年12月31日结束。虽然这可能符合消费者的期望,但来自全球有机生产的蛋白质可能会在其他方面对有机家禽的看法产生负面影响。大豆是家禽饲料中常用的一种成分,但大豆生产对环境和社会都有负面影响。消费者也可能更喜欢用当地生产的饲料喂养有机家禽,事实上,这将符合有机原则。在夏季和冬季对英国的有机肉鸡进行了初步的可行性饲料试验,以测试三种100%有机饲料:一种对照饲料采用全球来源的成分,包括大豆提取物,一种饲料采用当地来源(即欧洲境内)的有机成分,以及一种饲料采用当地来源的有机成分和藻类(蛋氨酸的良好来源)。夏饲试验结果表明,饲粮对肉鸡增重无显著影响。在冬季饲料试验中发现了差异。增重较低的地方饲料与添加藻类的地方饲料增重差异显著(P = 0.034),而添加大豆的对照饲料与这两种地方饲料的差异不显著(P = 0.034)。这些初步饲料试验表明,用欧洲蛋白质来源(可能包括藻类)替代大豆对肉鸡的生产性能或动物福利参数没有显著影响,这表明,尽管研究仍处于非常早期的阶段,但此类饲料可能是未来100%有机家禽饲料的可行选择。
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引用次数: 4
A New Evaluation Culture Is Inevitable 新的评价文化不可避免
Q3 Agricultural and Biological Sciences Pub Date : 2015-04-23 DOI: 10.12924/OF2015.01010036
J. Spaapen
Changes in the production of research (more collaborative, more inter- and transdisciplinary, more oriented towards societal demand) are influencing the ways in which research is evaluated. Traditional methods of evaluation primarily focussing on the production of scientific articles have long since given way to more comprehensive methods in which researchers’ other activities are assessed too. Beyond these developments, evaluation also involves research endeavours concerning collaboration with other stakeholders in society, such as industry, NGO’s, consumer groups, or governmental organisations.
研究成果的变化(更多的合作、更多的跨学科和跨学科、更面向社会需求)正在影响评估研究的方式。传统的评估方法主要集中在科学文章的生产上,这种方法早已让位于更全面的方法,在这种方法中,研究人员的其他活动也被评估。除了这些发展,评估还涉及与社会其他利益相关者(如工业、非政府组织、消费者团体或政府组织)合作的研究工作。
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引用次数: 5
Applications of Open Source 3-D Printing on Small Farms 开源3d打印在小农场的应用
Q3 Agricultural and Biological Sciences Pub Date : 2015-04-16 DOI: 10.12924/OF2015.01010019
Joshua M. Pearce
There is growing evidence that low-cost open-source 3-D printers can reduce costs by enabling distributed manufacturing of substitutes for both specialty equipment and conventional mass-manufactured products. The rate of 3-D printable designs under open licenses is growing exponentially and there arealready hundreds of designs applicable to small-scale organic farming. It has also been hypothesized that this technology could assist sustainable development in rural communities that rely on small-scale organic agriculture. To gauge the present utility of open-source 3-D printers in this organic farm context both in the developed and developing world, this paper reviews the current open-source designs available and evaluates the ability of low-cost 3-D printers to be effective at reducing the economic costs of farming.This study limits the evaluation of open-source 3-D printers to only the most-developed fused filament fabrication of the bioplastic polylactic acid (PLA). PLA is a strong biodegradable and recyclable thermoplastic appropriate for a range of representative products, which are grouped into five categories of prints: handtools, food processing, animal management, water management and hydroponics. The advantages and shortcomings of applying 3-D printing to each technology are evaluated. The results show a general izabletechnical viability and economic benefit to adopting open-source 3-D printing for any of the technologies, although the individual economic impact is highly dependent on needs and frequency of use on a specific farm. Capital costs of a 3-D printer may be saved from on-farm printing of a single advanced analytical instrument in a day or replacing hundreds of inexpensive products over a year. In order for the full potential of open-source 3-D printing to be realized to assist organic farm economic resiliency and self-sufficiency, future work is outlined in five core areas: designs of 3-D printable objects, 3-D printing materials, 3-Dprinters, software and 3-D printable repositories.
越来越多的证据表明,低成本的开源3d打印机可以通过分布式制造来替代专业设备和传统的批量生产产品,从而降低成本。开放许可下的3d打印设计呈指数级增长,已经有数百种设计适用于小规模有机农业。还有一种假设认为,这种技术可以帮助依赖小规模有机农业的农村社区实现可持续发展。为了衡量目前开源3d打印机在发达国家和发展中国家有机农场环境中的效用,本文回顾了目前可用的开源设计,并评估了低成本3d打印机在降低农业经济成本方面的有效能力。本研究将开源3d打印机的评估局限于目前最先进的生物塑料聚乳酸(PLA)熔丝制造。PLA是一种强大的可生物降解和可回收的热塑性塑料,适用于一系列代表性产品,这些产品分为五类印刷品:手工工具,食品加工,动物管理,水管理和水培。评估了将3d打印应用于每种技术的优点和缺点。结果表明,采用开源3d打印技术的任何一种技术都具有普遍的技术可行性和经济效益,尽管个别经济影响高度依赖于特定农场的需求和使用频率。一台3d打印机的资本成本可以从农场一天打印一台先进的分析仪器或在一年内替换数百种廉价产品中节省下来。为了充分发挥开源3d打印的潜力,帮助有机农场实现经济弹性和自给自足,未来的工作将在五个核心领域进行概述:3d打印对象的设计、3d打印材料、3d打印机、软件和3d打印库。
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引用次数: 55
Strategies towards Evaluation beyond Scientific Impact. Pathways not only for Agricultural Research 超越科学影响的评价策略。途径不仅仅用于农业研究
Q3 Agricultural and Biological Sciences Pub Date : 2015-04-15 DOI: 10.12924/OF2015.01010003
Birge Wolf, A. Häring, J. Heß
Various research fields, like organic agricultural research, are dedicated to solving real-world problems and contributing to sustainable development. Therefore, systems research and the application of interdisciplinary and transdisciplinary approaches are increasingly endorsed. However, research performance depends not only on self-conception, but also on framework conditions of the scientific system, which are not always of benefit to such research fields. Recently, science and its framework conditions have been under increasing scrutiny as regards their ability to serve societal benefit. This provides opportunities for (organic) agricultural research to engage in the development of a research system that will serve its needs. This article focuses on possible strategies for facilitating a balanced research evaluation that recognises scientific quality as well as societal relevance and applicability. These strategies are (a) to strengthen the general support for evaluation beyond scientific impact, and (b) to provide accessible data for such evaluations. Synergies of interest are found between open access movements and research communities focusing on global challenges and sustainability. As both are committed to increasing the societal benefit of science, they may support evaluation criteria such as knowledge production and dissemination tailored to societal needs, and the use of open access. Additional synergies exist between all those who scrutinise current research evaluation systems for their ability to serve scientific quality, which is also a precondition for societal benefit. Here, digital communication technologies provide opportunities to increase effectiveness, transparency, fairness and plurality in the dissemination of scientific results, quality assurance and reputation. Furthermore, funders may support transdisciplinary approaches and open access and improve data availability for evaluation beyond scientific impact. If they begin to use current research information systems that include societal impact
各种研究领域,如有机农业研究,致力于解决现实问题,为可持续发展做出贡献。因此,系统研究和跨学科和跨学科方法的应用日益得到认可。然而,研究绩效不仅取决于自我概念,还取决于科学体系的框架条件,这些条件并不总是有利于这些研究领域。最近,科学及其框架条件在服务于社会利益的能力方面受到越来越多的审查。这为(有机)农业研究提供了机会,使其能够参与开发满足其需求的研究系统。这篇文章的重点是可能的策略,以促进一个平衡的研究评估,承认科学质量以及社会相关性和适用性。这些战略是(a)加强对科学影响之外的评价的一般支持,(b)为这种评价提供可获得的数据。在开放获取运动和关注全球挑战和可持续性的研究团体之间发现了利益的协同作用。由于两者都致力于增加科学的社会效益,它们可能支持评估标准,例如适合社会需求的知识生产和传播,以及开放获取的使用。在所有审查当前研究评价系统服务科学质量的能力的人之间存在额外的协同作用,这也是社会效益的先决条件。在这方面,数字通信技术为提高科学成果传播的有效性、透明度、公平性和多样性、质量保证和声誉提供了机会。此外,资助者可以支持跨学科方法和开放获取,并改善数据的可用性,以供科学影响之外的评估。如果他们开始使用当前的研究信息系统,包括社会影响
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引用次数: 11
A Fresh Start for Organic Farming Research 有机农业研究的新开始
Q3 Agricultural and Biological Sciences Pub Date : 2013-12-13 DOI: 10.12924/OF2015.01010001
T. Döring
Over the past few decades the area of farmland underorganic management has significantly and continuously increased  [1]. This trend, observed across all continents, has been accompanied by a strong expansion of the market for organically produced goods, and a substantial increase of organic farming research efforts, funded through national and international programmes. At the same time, with the tremendous expansion of organic agriculture and food systems the organic sector has experienced a remarkable diversification and it is therefore essential to conduct research in, and find practical solutions for, an increasing diversity of organic farming systems across the globe.
在过去的几十年里,未进行有机管理的农田面积显著且持续增加Â[1]。这一趋势遍及各大洲,与之相伴的是有机产品市场的强劲扩张,以及由国家和国际项目资助的有机农业研究工作的大幅增加。与此同时,随着有机农业和食品系统的巨大扩张,有机部门经历了显著的多样化,因此,在全球范围内对日益多样化的有机农业系统进行研究并找到切实可行的解决方案至关重要。
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引用次数: 4
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Organic Farming
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