engleski

Liming effects on improving acid soil properties

In order to evaluate the residual effect of liming on soil pH and phosphorus and potassium availability, soil samples from field trial was analyzed five years after application of liming material. Trial was conducted on the acid stagnosol with low phosphorus and potassium availability, in 2008 in the central Croatia. Granulated dolomite (trade name Fertdolomite) containing 24.0% CaO and 16.0% MgO was applied in the six rates: 0, 5, 10, 20, 30 and 40 t ha-1. Liming gradually raised soil pH value up to 1.5 pH units. Increased pH considerably improved soil phosphorus status (AL-method) from low to very high, and at the highest rate, phosphorus content increased by 24.8 mg compared to the control. Impact of liming was less pronounced on potassium as its availability was improved from class of very low to low soil supply. Soil organic matter contents were independent on applied treatments.

liming ; acid soil ; soil pH ; phosporus

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