engleski

Influences of liming on nutritional status of soil

Soil acidity and problems associated with it (elemental toxicities and deficiencies, primarily an inadequate level of phosphorus) are in many cases limiting factor of crops yield in Croatia The aim of this study was testing the impact of liming with carbocalk (waste of sugar beet factory with total Ca contents about 340 g kg-1) on the nutritional status of soil surface layer on a stagnic albeluvisol. Liming treatments were as follows: 0, 15, 30, 45, 60 and 90 t ha-1. Increasing rates of carbocalk gradually raised soil pH value and that effect was significant at all treatments in the fourth year after liming. Overall, increased soil pH had the positive impact on phosphorus availability, whilst the micronutrients solubility mostly was reduced. Due to antagonism with Ca-ions, whose contents were considerably increased, potassium availability were declined, but that effect were significant only at the higher liming rates. As regards Fe, Al and Zn status, there weren’ t notable differences among liming treatments. It can be concluded, that the most positive effect on nutritional status of investigated stagnic albeluvisol had the carbocalk rates of 30 and 45 t ha-1, while the higher rates led to nutrient unbalances.

liming ; corn ; carbocalk ; soil properties ; NH4-Acetate+EDTA extraction

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