نتایج جستجو برای: arable

تعداد نتایج: 3340  

Journal: :Japanese Journal of Crop Science 1998

Journal: :Annals of Botany 1913

2017
Gisela Lüscher Philippe Jeanneret

Farmland species provide key ecological services that support agricultural production, but are under threat from agricultural intensification and mechanization. In order to design effective measures to mitigate agricultural impact, simultaneous investigations of different taxonomic groups across several regions are required. Therefore, four contrasting taxonomic groups were investigated: plants...

2015
Harpinder Sandhu Steve Wratten Robert Costanza Jules Pretty John R. Porter John Reganold

Background. Ecosystem services (ES) generated within agricultural landscapes, including field boundaries, are vital for the sustainable supply of food and fibre. However, the value of ES in agriculture has not been quantified experimentally and then extrapolated globally. Methods. We quantified the economic value of two key but contrasting ES (biological control of pests and nitrogen mineralisa...

2016
Anikó Kovács-Hostyánszki Rita Földesi Edina Mózes Ádám Szirák Joern Fischer Jan Hanspach András Báldi

Farmland biodiversity is strongly declining in most of Western Europe, but still survives in traditional low intensity agricultural landscapes in Central and Eastern Europe. Accession to the EU however intensifies agriculture, which leads to the vanishing of traditional farming. Our aim was to describe the pollinator assemblages of the last remnants of these landscapes, thus set the baseline of...

Journal: :Environmental biosafety research 2008
Yann Devos Mathias Cougnon Olivier Thas Dirk Reheul

Spatially isolating genetically modified (GM) maize fields from non-GM maize fields is a robust on-farm measure to keep the adventitious presence of GM material in the harvest of neighboring fields due to cross-fertilizations below the European labeling threshold of 0.9%. However, the implementation of mandatory and rigid isolation perimeters can affect the farmers' freedom of choice to grow GM...

Journal: :Remote Sensing 2015
Olena Dubovyk Gunter Menz Alexander Lee Jürgen Schellberg Frank Thonfeld Asia Khamzina

Acquiring multi-temporal spatial information on vegetation condition at scales appropriate for site-specific agricultural management is often complicated by the need for meticulous field measurements. Understanding spatial/temporal crop cover heterogeneity within irrigated croplands may support sustainable land use, specifically in areas affected by land degradation due to secondary soil salini...

2016
Terence Epule Epule Christopher Robin Bryant Sibylle Stöckli

Research has proven that, at a national scale in Cameroon, arable crop production is either declining or stagnant. In the face of these trends, governments, local and international organizations, communities and peasant farmers have developed adaptation options to sustain arable production and reduce poverty. Given this general context, and based on population perceptions and four study sites i...

2006
Zdeňka Lososová Milan Chytrý Ingolf Kühn Ondřej Hájek Viera Horáková Petr Pyšek Lubomı́r Tichý

Man-made habitats in central Europe can be broadly divided into arable land with weed vegetation, and settlements and their surroundings, harbouring ruderal vegetation. The former is a predictable environment with frequent, regular and large-scale disturbances, while the latter is an unpredictable environment with irregular disturbances of varying spatial extent producing heterogeneous mosaics ...

2005
P. Kardol T. M. Bezemer A. van der Wal W. H. van der Putten

Conversion of arable land into semi-natural grassland or heath land is a common practice for restoring and conserving plant diversity. However, little is known about the effectiveness of land conversion for restoring and conserving taxonomic and functional diversity in the soil. We studied soil nematode community development in a chronosequence of abandoned fields and related this to plant comm...

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