Experimental Field Research On Nitrate
Balance In Agricultural Soils
Author(s)
A. M. Marinov, M. Pele, E. M. Draghici, G. Vasile
& M. Artimon
Abstract
High nitrate levels in groundwater endanger public water supplies. Although the
European Community sets 50 mg NO3
─/L as the maximum tolerated
concentration in drinking water, this level is exceeded in many aquifers. The
input concentrations of nitrates into the groundwater have to be reduced to
acceptable levels. One of the measures to facilitate this reduction is the
application of fertilizers according to the actual demand of plants and the
existing quantity of nitrogen in the root zone prior to the application. Our work
focuses on reducing soil contamination due to agricultural practices by analysis
of irrigation and drainage with respect to transport of nitrogenous fertilizer
through the soil. This paper describes our experimental field research developed
in tunnels during the plants’ (Lactuca Sativa L) life time. The concentration of
nitrogen compounds in soil and the nitrogen uptake by plants were measured and
compared for different fertilization schedules. We compare existing methods of
fertilizer application, water management, and agricultural practices to improve
nitrate pollution control in soils and we propose corresponding best management
practices.
Keywords: soil pollution with nitrate, fertilization, irrigation, agricultural
practices, experimental research.
Keywords
soil pollution with nitrate, fertilization, irrigation, agricultural
practices, experimental research
Related Book
Other papers in this volume
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