[Formation of winter wheat yield depending on nitrogen regime conditions of soils]
1999
Lapa, V.V. | Bosak, V.N. | Germanovich, T.M. | Trofimova, T.P. | Malej, E.S. (Belarus Research Inst. for Soil Science and Agrochemistry, Minsk (Belarus))
In field experiences was found that maximum winter wheat yield 52,3 c/ha on high cultivated sod-podzolic light loamy soil is formed at the application of N60 in spring at the beginning of plant vegetation on the background P60 K90 and after effect of 20 t/ha manure. Coefficient of nitrogen using from mineral fertilizers on this variant amounted to 53%. Content of nitrogen forms in soil (potential assimilable, ammonium, nitrate) depends in considerable measure on the level of nitrogen fertilizer application and plant development stage. Ammonium nitrogen forms take more stable part in nutrition of winter wheat plants. Nitrate nitrogen is more active in plant nutrition in the first growth and development stages
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