Effect of nitrogenous fertilizers on nutrient leaching from brown soil
1999
Noskovic, J. | Urminska, J. | Porhajasova, J. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic). Katedra Ochrany Zivotneho Prostredia a Zoologie)
In laboratory lysimetric experiment the effect of slowly affecting nitrogenous fertilizers on nutrient leaching and migration was observed. Migration of anorganic N-forms (N-NO3, N-NH4+), bivalent cations (Ca2+, Mg2+) and monovalent cations (K+, Na+) depending on both applied nitrogenous fertilizers (ammonium nitrate with dolomite, urea-formaldehyde condensates with different activity index) were observed. Soil type - brown soil. It was found that anorganic N and cations are leaching as follows: Ca2+ Mg2+ N-NO3- Na+ K+ N-NH4+. The obtained results confirmed the dependence of leaching anorganic N and cations as well as form of applied fertilizers. A significant effect of activity index of urea-formaldehyde fertilizers was observed. The most intensive migration was in variants with easily soluble fertilizers
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