Download Agricultural Pollution Problems and Practical Solutions by Graham Merrington, Dr Linton Winder Nfa, R. Parkinson, Mark PDF

By Graham Merrington, Dr Linton Winder Nfa, R. Parkinson, Mark Redman, L. Winder

This entire textual content offers a concise evaluate of environmental difficulties brought on by agriculture (such as pesticide pollutants and elevated nitrate degrees) and provides useful options to them. it really is good illustrated and incorporates a fully-referenced advent to the most modern agricultural pollutants matters within the united kingdom. it's going to aid offer transparent, clinical and technical figuring out of crucial resources of agricultura toxins.

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The future extension of schemes to limit nitrate losses from agricultural land will depend on the success of the NVZ scheme and the on-going debate surrounding the health risks associated with the supply of drinking water containing elevated nitrate concentrations. Technological developments will play a major role in the continuing advances made to enhance the efficiency of nitrogen use in agriculture.

1998). , 1986). Indeed, 92% of all ammonia in Western Europe originates from agriculture of which about 30% is from livestock (Isherwood, 2000). Ammonia loss is likely to be greatest where high concentrations of ammoniacal N occur. For example, from urine or slurry. Losses of N as NH 3 may be as great as 80% of the total when slurry is surface applied to grassland (depending on weather and sward conditions) (Whitehead, 2000). 22 CHAPTER 2 In arable soils, the greatest losses occur when ammoniacal fertilisers or urea are applied under alkaline conditions.

The most important agricultural example is the Rhizobia bacteria that form a close symbiotic relationship with leguminous crops such as peas, beans and clover. Legumes are mainly grown on the farm as either arable or forage crops. g. g. red and white clover) are commonly grown mixed with grass, and are either used for livestock grazing or cut for hay and silage. Legume crops usually leave large quantities of high protein content crop residues which can make a significant contribution to levels of organic N in the soil and, upon decomposition and mineralisation, to soil mineral N levels and the growth and yield of subsequent crops.

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