Agricultural Pollution Problems and Practical Solutions by Graham Merrington, Dr Linton Winder Nfa, R. Parkinson, Mark
By Graham Merrington, Dr Linton Winder Nfa, R. Parkinson, Mark Redman, L. Winder
This finished textual content offers a concise evaluate of environmental difficulties attributable to agriculture (such as pesticide toxins and elevated nitrate degrees) and provides functional strategies to them. it truly is good illustrated and features a fully-referenced advent to the most modern agricultural pollutants matters within the united kingdom. it's going to support supply transparent, clinical and technical knowing of crucial resources of agricultura toxins.
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Extra info for Agricultural Pollution Problems and Practical Solutions
1993). 4 NITROGEN FERTILISER USE IN AGRICULTURE Sustained agricultural production depends upon the continual fixation of atmospheric N 2 to replenish the N lost from the soil in harvested crops, livestock production and the natural soil loss processes, such as leaching and denitrification, already described above. Since the late 1940s agriculture has undergone rapid modernisation as political and economic support created a favourable economic climate in which technical efficiency and technological advancement were encouraged and flourished.
1997). The balance of the two major N inputs to agricultural soils, mineral fertilisers and livestock manures varies greatly across Europe, with the former being of greater importance in Denmark, Germany, Greece, France, Luxembourg, Finland and Sweden and the latter in Belgium and The Netherlands (Pau Vall and Vidal, 1999). It is widely acknowledged that a major factor contributing to the increased pollution of the aquatic environment by NO3− has been the specialisation and intensification of agricultural enterprises (Chapter 3) (Edwards and Withers, 1998).
Agricultural soils can be prone to ‘leak’ substantial quantities of NO3− in drainage water and this is frequently cited as one the main causes of N loss from soils (>40 kg N ha−1 in many UK soils) (Lord and Anthony, 2000). e. the influx of water (either rainfall or irrigation) is greater than the evapotranspiration. This is further influenced by soil texture and structure that may affect the hydraulic conductivity and water storage capacity of the soil. Nitrate leaching losses are generally greater from poorly structured sandy soils than well structured clay soils.