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In the field experiment on very light, acid soil pig slurry was applied of in doses with 60-300 kg N/ha under each plant. The slurry effect was compared with mineral fertilization of 60 and 120 kg N/ha. After 4, 8 and 12 years there were taken soil samples and determined: reaction, hydrolytic acidity, exchange cations, aluminium content, available iron and manganese content. There was showed that...
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