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  • Cambridge University Press (CUP)  (7)
  • 2010-2014  (7)
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  • Cambridge University Press (CUP)  (7)
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  • 2010-2014  (7)
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  • 1
    Online Resource
    Online Resource
    Cambridge University Press (CUP) ; 2011
    In:  The Journal of Agricultural Science Vol. 149, No. S1 ( 2011-02), p. 55-61
    In: The Journal of Agricultural Science, Cambridge University Press (CUP), Vol. 149, No. S1 ( 2011-02), p. 55-61
    Abstract: Improvements in farming systems and food supply will come from: increased production efficiencies per unit land area or per unit input of key components such as water or fertilizer; from less negative impact on local and global environments, allowing sustainable biodiversity goals to be integrated with production performance; and from enhanced approaches to bringing global supply and demand in balance, allowing internationally agreed goals for biosphere stability to be shaped, managed and delivered. Each stage will deliver significant improvements to current farming approaches. Modern engineering methods and technology advances have enhanced productivity in all major industries, and farming is yet to make much progress by developing and adopting these technologies. Sensors, control and integrated management systems will be major features, delivering enhanced farming productivity per unit input and per person employed, complemented by decreased environmental impacts and lower losses in the food chain. New insights into modelling and interpreting systems' performance will provide key contributions to optimization and control under complex challenges.
    Type of Medium: Online Resource
    ISSN: 0021-8596 , 1469-5146
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2011
    detail.hit.zdb_id: 1498349-7
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  • 2
    Online Resource
    Online Resource
    Cambridge University Press (CUP) ; 2011
    In:  The Journal of Agricultural Science Vol. 149, No. S1 ( 2011-02), p. 29-36
    In: The Journal of Agricultural Science, Cambridge University Press (CUP), Vol. 149, No. S1 ( 2011-02), p. 29-36
    Abstract: This review introduces the main concepts behind integrated soil management (ISM) and examines the ways in which it currently operates. It suggests the scope for future technological development. The review also highlights the potential of ISM to address the challenge of meeting the demands of the increasing world population, while maintaining sustainable agro-ecosystems, as judged from long-term soil fertility, environmental and socio-economic perspectives. Changes to policy, governance and funding worldwide will be needed to conserve and manage the soil resource, and to restore already degraded systems. Research should be prioritized to ensure continued delivery of new soil technologies. Such changes must engage all land-use stakeholders, must involve educational, training and extension programmes and must embrace the multidisciplinarity required for effective soil conservation and management.
    Type of Medium: Online Resource
    ISSN: 0021-8596 , 1469-5146
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2011
    detail.hit.zdb_id: 1498349-7
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  • 3
    Online Resource
    Online Resource
    Cambridge University Press (CUP) ; 2013
    In:  The Journal of Agricultural Science Vol. 151, No. 2 ( 2013-04), p. 163-188
    In: The Journal of Agricultural Science, Cambridge University Press (CUP), Vol. 151, No. 2 ( 2013-04), p. 163-188
    Abstract: Climate change biology is witnessing a significant quantity of new publications each year, which compromises efforts to keep up-to-date on the rapidly growing body of climate change biology literature. The present paper provides an overview on research approaches and challenges in climate change biology with respect to plant pathogens, insect pests and weeds (collectively termed ‘pests’ here). It also summarizes the suggestions of researchers about how to conceptualize and prioritize future research strategies. Recently published key studies demonstrate that climate change research is qualitatively advancing and that the interactions among environmental and biotic factors which have been found are complex. This complexity hinders attempts to generalize responses of pests to changes in climate. The challenge remains to identify the most significant causal relationships and to separate them from other factors such as crop management practices, which may also influence the observed changes in pest distribution and prevalence in managed ecosystems. In addition, the present overview shows that there are still gaps in many research areas, while other fields have been intensively investigated. For example, the identification of potential benefits in plant protection that may emerge from future climate change has not been explored as extensively as the potential threats. However, encouraging developments can be observed in recent climate change research, for instance the increased number of studies performed under subtropical and tropical climatic conditions, the increased availability of results from multi-factorial field experiments and modelling studies do consider increasingly pest–crop–climate interactions. Further progress can be expected, provided that researchers, sponsors and other stakeholders maintain their interest in climate change biology research.
    Type of Medium: Online Resource
    ISSN: 0021-8596 , 1469-5146
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2013
    detail.hit.zdb_id: 1498349-7
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  • 4
    Online Resource
    Online Resource
    Cambridge University Press (CUP) ; 2014
    In:  The Journal of Agricultural Science Vol. 152, No. S1 ( 2014-12), p. 9-19
    In: The Journal of Agricultural Science, Cambridge University Press (CUP), Vol. 152, No. S1 ( 2014-12), p. 9-19
    Abstract: Current production systems for crops, meat, dairy and bioenergy in the European Union (EU) rely strongly on the external input of nitrogen (N). These systems show a high productivity per unit of land. However, the drawback is a complex web of N pollution problems contributing in a major way to degradation of ecosystems. European Union Directives and national policies have improved nutrient management and reduced fertilizer N use in most European countries, which has curbed the N pollution trends particularly in regions with high stocking rates of animals. However, improvement is slowing down and environmental targets for N are not within reach. Building on the 2011 European Nitrogen Assessment, the current paper reviews key features of the complex relationships between N use and food production in Europe in order to develop novel options for a more N-efficient, less N-polluting and secure European food system. One option is to relocate feed and livestock production from Northwestern to Central and Eastern Europe. This would allow a reduction of N rates and N pollution in cereal production in Northwest Europe by 30% (50 kg N/ha), while increasing total cereal production in Europe. Another option is a change towards legume-based cropping systems to produce animal feed, in order to decrease dependence on N fertilizer and feed imports. The greatest challenge for Europe is to decrease the demand for feed commodities, and thus for land and N, by a shift to more balanced (and healthier) diets with less animal protein. These drastic changes can be stimulated by targeted public–private research funding, while the actual implementation can be enhanced by smart payment schemes using, for example money from the Common Agricultural Policy, certification and agreements between stakeholders and players in the food and energy chain. Involving networks of consumers, producers and non-governmental organizations is critical. An effective strategy starts with convincing consumers with a Western diet to eat less meat and dairy by communicating the associated health benefits and smaller ecological footprints. Internalizing the cost of N pollution leading to increased prices for N-intensive food products may also enhance involvement of consumers and provide financial resources to compensate farmers for loss of income and extra costs for stricter N measures.
    Type of Medium: Online Resource
    ISSN: 0021-8596 , 1469-5146
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2014
    detail.hit.zdb_id: 1498349-7
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  • 5
    Online Resource
    Online Resource
    Cambridge University Press (CUP) ; 2011
    In:  The Journal of Agricultural Science Vol. 149, No. S1 ( 2011-02), p. 1-7
    In: The Journal of Agricultural Science, Cambridge University Press (CUP), Vol. 149, No. S1 ( 2011-02), p. 1-7
    Abstract: To meet the increasing global demand for food that is predicted over the coming decades it will be necessary to increase productivity and to do this in a way that is sustainable and efficient in its use of resources. Productivity is currently determined by the intrinsic genetic potential of the domestic plants and animals on which mankind is dependent as well as by components of the biophysical environment (temperature, water availability and quality, soil fertility, parasites, pathogens, weeds) from which terrestrial or aquatic food production is derived. Within certain limits, it is possible to manipulate plant and animal genotypes, the production environment, and the inevitable interaction between these factors, to relax constraints on productivity and potential output. Looking to the future, increased scientific understanding will undoubtedly permit this manipulation to be achieved more effectively, thus enabling the scale of production to be elevated predictably while reducing reliance on non-renewable inputs and limiting the use of more forest, grassland, wetland or coastal margin. The present paper introduces a collection of reviews that were commissioned as part of the UK's Government Office of Science Foresight Project on Global Food and Farming Futures which reports early in 2011. The reviews explore opportunities for advances in science and technology to impact in coming decades on the sustainable productivity of terrestrial and aquatic food production systems. Collectively, they describe many of the approaches currently being considered to define, remove or relax the different genetic or environmental constraints limiting sustainable food production. These include: potential impacts of climate change on aquatic systems, the application of biotechnology, genetics and the development of systems to improve livestock, fish and crop production; approaches to the management of parasites and pathogens; weed control in crops; management of soil fertility; approaches to countering problems of water shortage; reducing post-harvest wastage; the role of advanced engineering and the potential for increasing food production in urban environments.
    Type of Medium: Online Resource
    ISSN: 0021-8596 , 1469-5146
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2011
    detail.hit.zdb_id: 1498349-7
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  • 6
    Online Resource
    Online Resource
    Cambridge University Press (CUP) ; 2013
    In:  The Journal of Agricultural Science Vol. 151, No. 2 ( 2013-04), p. 154-162
    In: The Journal of Agricultural Science, Cambridge University Press (CUP), Vol. 151, No. 2 ( 2013-04), p. 154-162
    Abstract: Successful crop production depends initially on the availability of high-quality seed. By 2050 global climate change will have influenced crop yields, but will these changes affect seed quality? The present review examines the effects of elevated carbon dioxide (CO 2 ) and temperature during seed production on three seed quality components: seed mass, germination and seed vigour. In response to elevated CO 2 , seed mass has been reported to both increase and decrease in C 3 plants, but not change in C 4 plants. Increases are greater in legumes than non-legumes, and there is considerable variation among species. Seed mass increases may result in a decrease of seed nitrogen (N) concentration in non-legumes. Increasing temperature may decrease seed mass because of an accelerated growth rate and reduced seed filling duration, but lower seed mass does not necessarily reduce seed germination or vigour. Like seed mass, reported seed germination responses to elevated CO 2 have been variable. The reported changes in seed C/N ratio can decrease seed protein content which may eventually lead to reduced viability. Conversely, increased ethylene production may stimulate germination in some species. High-temperature stress before developing seeds reach physiological maturity (PM) can reduce germination by inhibiting the ability of the plant to supply the assimilates necessary to synthesize the storage compounds required for germination. Nothing is known concerning the effects of elevated CO 2 on seed vigour. However, seed vigour can be reduced by high-temperature stress both before and after PM. High temperatures induce or increase the physiological deterioration of seeds. Limited evidence suggests that only short periods of high-temperature stress at critical seed development stages are required to reduce seed vigour, but further research is required. The predicted environmental changes will lead to losses of seed quality, particularly for seed vigour and possibly germination. The seed industry will need to consider management changes to minimize the risk of this occurring.
    Type of Medium: Online Resource
    ISSN: 0021-8596 , 1469-5146
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2013
    detail.hit.zdb_id: 1498349-7
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  • 7
    Online Resource
    Online Resource
    Cambridge University Press (CUP) ; 2014
    In:  The Journal of Agricultural Science Vol. 152, No. S1 ( 2014-12), p. 45-56
    In: The Journal of Agricultural Science, Cambridge University Press (CUP), Vol. 152, No. S1 ( 2014-12), p. 45-56
    Abstract: The need for nitrogen (N) efficiency measures for dairy systems is as great as ever if we are to meet the challenge of increasing global production of animal-based protein while reducing N losses to the environment. The present paper provides an overview of current N efficiency and mitigation options for pastoral dairy farm systems and assesses the impact of integrating a range of these options on reactive N loss to the environment from dairy farms located in five regions of New Zealand with contrasting soil, climate and farm management attributes. Specific options evaluated were: (i) eliminating winter applications of fertilizer N, (ii) optimal reuse of farm dairy effluent, (iii) improving animal performance through better feeding and using cows with higher genetic merit, (iv) lowering dietary N concentration, (v) applying the nitrification inhibitor dicyandiamide (DCD) and (vi) restricting the duration of pasture grazing during autumn and winter. The Overseer ® Nutrient Budgeting model was used to estimate N losses from representative farms that were characterized based on information obtained from detailed farmer surveys conducted in 2001 and 2009. The analysis suggests that (i) milk production increases of 7–30% were associated with increased N leaching and nitrous oxide (N 2 O) emission losses of 3–30 and 0–25%, respectively; and (ii) integrating a range of strategic and tactical management and mitigation options could offset these increased N losses. The modelling analysis also suggested that the restricted autumn and winter grazing strategy resulted in some degree of pollution swapping, with reductions in N leaching loss being associated with increases in N loss via ammonia volatilization and N 2 O emissions from effluents captured and stored in the confinement systems. Future research efforts need to include farm systems level experimentation to validate and assess the impacts of region-specific dairy systems redesign on productivity, profit, environmental losses, practical feasibility and un-intended consequences.
    Type of Medium: Online Resource
    ISSN: 0021-8596 , 1469-5146
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2014
    detail.hit.zdb_id: 1498349-7
    Location Call Number Limitation Availability
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