Problems Nitrates

So what can be done about the mercuric nitrate problem The authors in the original paper from which this recipe came from, clearly call for an amount of mercuric nitrate that is exactly equal... 

At the root of the nitrate problem lies a very simple relationship ... 

Fertilizer nitrogen is usually applied in the spring, but to assess its overall contribution to the nitrate problem we need to consider what happens not only in the period between its application and the harvest of the crop but also after harvest. 

The fact that is not radioactive means that it can be used safely in experiments in the field, but it also means that much patient work is needed to obtain results. The approach is demanding in terms of time, equipment, and skilled manpower, but it has made a great contribution to the understanding of the nitrate problem. The results that are outlined here are from experiments made by staff at Rothamsted, but key contributions have also come from Scotland and France. " The majority of the Rothamsted experiments involved winter wheat, but oilseed rape, potatoes, beans, and sugar beet were also grown. The soil is a factor in nitrate leaching, and three types were used, the flinty, silty clay loam at Rothamsted, a sandy loam at Woburn in Bedfordshire and a heavy sandy clay at Saxmimdham in Suffolk. 

Even when horticultural crops leave substantial amounts of nitrate in the soil at harvest, they are not usually a very important factor in the nitrate problem because horticulture occupies only about 6% of the cultivable land. However, there could be a problem if, because of the type of soil, a number of market gardens were concentrated above an aquifer that was an important source of potable water. 

The Contribution of Factors other than Nitrogen Fertilizers to the Nitrate Problem... 

Dividing the nitrate problem into topics is inevitably a somewhat arbitrary process, because of the interactions between the nitrogen fertilizer and the other factors . The various crops, for example, could arguably have come in this section rather than Section 2, while the structure of the soil, discussed in this Section,... 

In view of experience with the groundwater nitrate problem and the possibility of a large unsaturated time-lag in British aquifer systems (especially in the Chalk), it is necessary to address the following questions in the above investigation ... 

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