Effect of growing cereals in crop rotation and monoculture on carbamide and ammonium sulphate transformation in soil
1996
Kucharski, J. | Niewolak, T. (Akademia Rolniczo-Techniczna, Olsztyn (Poland). Katedra Mikrobiologii Rolnej)
Soil acidity, sum of exchangeable bases, sorption complex capacity, level of soil base saturation and activities of urease, dehydrogenases, acid- and alkaline phosphatase, organic carbon content and the number of soil microorganisms were studied. Transformations of ammonium sulphate and carbamide in the soil were also investigated in a laboratory experiment. Monoculture of spring barley and oats more favourably affected nitrification of ammonium N and carbamide hydrolysis than the crop rotation, while crop rotation stronger acidified the soil, decreased sum of exchangeable bases, soil sorption capacity and level of base saturation, also stimulated dehydrogenase and acid phosphatase and inhibited urease and alkaline phosphatase activities
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