Results of mineral nitrogen content investigation in soils
1999
Timbare, R. | Busmanis, M. (State Scientific Production Enterprise "Raziba", Riga (Latvia))
The mineral nitrogen content in Latvia's soils was investigated to predict the amount of soil nitrogen used by plants and to regulate the rate of nitrogen fertilizers for crops under definite growing conditions. The trials were carried out on farmers' fields as well as on experimental fields in spring and during the vegetation period of cereals. The factors influencing Nmin content in soil were determined, the main of them are - meteorological conditions, soil properties, previously grown crops, use of fertilizers. To predict the Nmin content in soils the whole complex of the influencing factors must be considered.
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