Nürnberg - Der Umsatz mit Bio-Lebensmitteln in Deutschland hat 2012 die Marke von sieben Milliarden Euro durchbrochen.
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|Rescooped by AckerbauHalle from Plant Biology Teaching Resources (Higher Education)|
"While some areas show no significant influence of climate variability, in substantial areas of the global breadbaskets, >60% of the yield variability can be explained by climate variability. Globally, climate variability accounts for roughly a third (~32–39%) of the observed yield variability."
Nice paper to remind students of the need for genetic diversity even within major crops like rice, wheat, maize and soybean, as they are grown in regions with tremendously varying conditions and stresses.
Organic yield gap shrinking? Study actually shows it’s less sustainable than conventional ag | Marc Brazeau | January 20, 2015 | Genetic Literacy Project
Was lernen wir? Bei genauer Betrachtung sind Pressemitteilungen oft nicht so ganz korrekt.
Consumers perceive that organic cow milk differs from conventionally produced milk and that these differences justify the premium price for organic milk... researchers in New Zealand found that the differences between organic and conventional milk are not so straightforward.
Reviewing almost 200 publications, researchers concluded that previously conducted controlled studies... have so far been largely ambiguous... "When comparing organic and conventional milk composition... previous studies have generally compared organic dairying with milk produced from grass-fed cows to conventional dairying with milk produced from concentrate-fed cows. The differences in milk composition observed are actually due to the different diets of the cows (i.e. pasture versus concentrate feeding) rather than organic versus conventional farming systems"...
The vast majority of differences reported between organic and conventional milk come from what cows are fed and their breed, and is not anything unique to being organic or conventional in itself." Therefore in terms of nutrients in milk, there is nothing distinct about organic milk that makes it unique from conventionally produced milk once the different factors that influence milk production are compared or adjusted for. If animal genetics, health, breed, diet, management, or environment differs, then so will the composition of the milk produced.
Original article: http://dx.doi.org/10.3168/jds.2014-8389
Ist der Vergleich zwischen konventionell erzeugter Milch und Bio-Milch eigentlich sinnvoll?
Voluntary Sustainability Standards (VSS) are rapidly increasing in global value chains. While consumers, mostly in developed countries, are willing to pay significant premiums for such standards, it is not well understood how effectively these incentives are transmitted to producing countries.
We study VSS in Ethiopia’s coffee sector... We find that transmission of the export quality premiums to coffee pro-ducers is limited, with only one-third of this premium being passed on. Moreover, as quality premiums are small and average production levels in these settings are low, these premiums... have little effect on the welfare of the average coffee farmer.
Spannende Arbeit zu der Frage: wer profitiert eigentlich von Nachhaltigkeitsstandards?
Multiresistente Keime auf Putenfleisch und Gerüchte um die Abschaffung des Spezialitätenschutzes: Grund genug für die „heute Show“ des ZDF, hier auf der Grünen Woche bei ZDG-Chef Dr. Thomas Janning und Bundesagrarminister Christian…
Zum Stand der Debatte über öffentliche Wahrnehmung der Landwirtschaft ein Beitrag in der heute show vom letzten Freitag.
We refine the information available through the IPCC AR5 with regards to recent trends in global GHG emissions from agriculture, forestry and other land uses (AFOLU), including global emissions updates to 2012. By using all three available AFOLU datasets employed for analysis in the IPCC AR5, rather than just one as done in the IPCC AR5 WGIII Summary for Policy Makers, our analyses point to a down-revision of global AFOLU shares of total anthropogenic emissions, while providing important additional information on sub-sectoral trends. Our findings confirm that the share of AFOLU emissions to the anthropogenic total declined over time. They indicate a decadal average of 28.7±1.5% in the 1990s, 23.6±2.1% in the 2000s, and an annual value of 21.2±1.5% in 2010. The IPCC AR5 had indicated a 24% share in 2010. In contrast to previous decades, when emissions from land use (land use, land use change and forestry, including deforestation) were significantly larger than those from agriculture (crop and livestock production), in 2010 agriculture was the larger component, contributing 11.2±0.4% of total GHG emissions, compared to 10.0±1.2% of the land use sector. Deforestation was responsible for only 8% of total anthropogenic emissions in 2010, compared to 12% in the 1990s. Since 2010, the last year assessed by the IPCC AR5, new FAO estimates indicate that land use emissions have remained stable, at about 4.8 Gt CO2eq yr-1 in 2012. Emissions minus removals have also remained stable, at 3.2 Gt CO2eq yr-1 in 2012. By contrast, agriculture emissions have continued to grow, at roughly 1% annually, and remained larger than the land use sector, reaching 5.4 Gt CO2eq yr-1 in 2012. These results are useful to further inform the current climate policy debate on land use, suggesting that as many efforts and resources should be directed to agriculture mitigation in the coming years as they have been devoted to REDD+ in the past decade.
Das ist keine gute Nachricht - im globalen Maßstab ist Landwirtschaft inzwischen wichtiger als Veränderungen der Landnutzung für die Freisetzung von Treibhausgasen.
Efforts to maintain or increase food production in developed agriculture would be compromised if current high-intensity production was degrading supporting ecosystem services, such as the ability of soil to function. The link between cropping intensity, defined by pesticide and fertiliser applications, and soil biophysical status was examined at 70 sites in a high-yielding region of the UK, in which cropping sequences covering a wide range of intensity had diverged from a common low-intensity origin in the 1970s. Two sequences of still low or moderate intensity based on spring cereals or a low frequency of winter cereals formed comparators for three high intensity sequences based on winter wheat and potato which together were associated with adverse effects of −30% on soil carbon content in the upper soil layer (P < 0.001), −11% on soil water holding capacity (P < 0.01) and +15% on soil bulk density (P < 0.001). Negative effects were also found in some high intensity sequences on soil macroporosity and penetrometer resistance. Even in this high-yielding region, therefore, current forms of intensification are associated with adverse trends in soil condition that may be detrimental to future production. The effects of these trends in soil condition on agricultural output now need to be quantified, and the economic burden accounted for, if fields reduce their capacity to yield or need reparation to keep them productive.
Interessante Arbeit zu den Grenzen der Intensivierung. Es ist nicht alles in Ordnung, auch wenn dies auf den ersten Blick so scheinen mag.
Berlin - Die Preisexplosion bei deutschen Ackerflächen hat viele Ursachen; in erster Linie wird der Markt aber von den landwirtschaftlichen Teilnehmern selbst getrieben.
Dieses Resümee ist diese Woche in Berlin beim 12. Bodenforum der Fachzeitschrift „agrarmanager“ gezogen worden, auf dem die Frage nach den bestimmenden Faktoren für die steile Entwicklung der Bodenpreise in den letzten Jahre gestellt wurde. Den Vorwurf einer marktbeherrschenden Rolle der Bodenverwertungs- und -verwaltungsgesellschaft (BVVG) auf dem ostdeutschen Bodenmarkt wies deren Geschäftsführer Stefan Schulz dabei mit Nachdruck zurück. Er betonte den gesetzlichen Privatisierungsauftrag der BVVG und den vergleichsweise geringen Anteil, den sie inzwischen bei freien Transaktionen von Flächen einnehme.
Auch ein gravierender Einfluss außerlandwirtschaftlicher Investoren kann nach einer Untersuchung von Prof. Silke Hüttel von der Universität Rostock zumindest für Sachsen-Anhalt ausgeschlossen werden. Nach Einschätzung des Direktors des Leibniz-Instituts für Agrarentwicklung in Transformationsökonomien (IAMO), Prof. Alfons Balmann, folgen die Preise am landwirtschaftlichen Bodenmarkt auch heute meist den ökonomischen Rahmenbedingungen. Er sieht allenfalls partiell Marktversagen, das politisch und strukturell gelöst werden müsse.
Harker, K. N., O’Donovan, J. T., Turkington, T. K., Blackshaw, R. E., Lupwayi, N. Z., Smith, E. G., Johnson, E. N., Gan, Y., Kutcher, H. R., Dosdall, L. M. and Peng, G. 2015. Canola rotation frequency impacts canola yield and associated pest species. Can. J. Plant Sci. 95: 9–20. Canola (Brassica napus L.) production has been steadily increasing in western Canada. Here we determine the effect of canola rotation frequency on canola seed yield, quality and associated pest species. From 2008 to 2013, direct-seeded experiments involving continuous canola and all rotation phases of wheat (Triticum aestivum L.) and canola or field pea (Pisum sativum L.), barley (Hordeum vulgare L.) and canola were conducted at five western Canada locations. Fertilizers, herbicides, and insecticides were applied as required for optimal production of all crops. Canola rotation frequency did not influence canola oil or protein concentration or the level of major (composition>1%) seed oil fatty acids. High canola yields were associated with sites that experienced cooler temperatures with adequate and relatively uniform precipitation events. For each annual increase in the number of crops between canola, canola yield increased from 0.20 to 0.36 Mg ha−1. Although total weed density was not strongly associated with canola yield, decreased blackleg disease and root maggot damage were associated with greater canola yields as rotational diversity increased. Long-term sustainable canola production will increase with cropping system diversity.
Endlich mal wieder eine Veröffentlichung zu Fruchtfolge und Raps
Fachausstellungen und Tagungen für die Land -und Ernährungswirtschaft, Qualitätstests: Nahrungsmittel (Sensorik), Urlaub auf dem Bauernhof, Maschinen und Betriebsmittel für die Landwirtschaft
Hier noch einmal mit Bild
"This map shows Human Development Index (HDI) for 169 countries in the World. The HDI is a comparative measure of life expectancy, literacy, education, and standard of living for countries worldwide. The HDI sets a minimum and a maximum for each dimension, called goalposts, and then shows where each country stands in relation to these goalposts, expressed as a value between 0 and 1, where greater is better. The Human Development Index (HDI) measures the average achievements in a country in three basic dimensions of human development: health, knowledge and standard of living."
Tags: development, statistics, worldwide.
Genetic resources have a critical role to play in feeding the world — especially as climate change advances faster than expected — and much more needs to be done to study, preserve and utilize the biological diversity that underpins world food production, according to a new book released by FAO today.
"Time is not on our side" warns the book, Coping with climate change: the roles of genetic resources for food and agriculture."In the coming decades, millions of people whose livelihoods and food security depend on farming, aquaculture, fishing, forestry and livestock keeping are likely to face unprecedented climatic conditions."
Die FAO weist auf die Bedeutung von genetischer Diversität zur Bewältigung der Klimaveränderungen hin.