The Changing of Soil Reaction and Exchangeable Aluminum on two Different Soil Order due to Dolomite Application

Abstract The objective of the experiment was to know the effect of Dolomite application on soil reaction and exchangeable Aluminum in two different soil orders. The method was experimental using Factorial Randomized Block Design, which consists of two Factors. The First factor were soil orders consist two levels, i.e. T1= Ultisols Kentrong, dan T2 = Inseptisols Jatinangor, while the second were dolomite dosages, consist four levels, i.e. dO = 0 ton ha-1, d1 = 1 ton ha-1, d2 = 2 ton ha-1, d3 = 3 ton ha-1, d4 = 4 ton ha-1.The result of the experiment showed that on Ultisols Kentrong, dolomite applications significantly increased the value of soil reaction (pH) after two weeks incubation. The treatment of 3 ton/ha showed pH 4.73 or 8 % higher that control. Otherwise, the applications of dolomite also decreased the exchangeable Aluminum. The treatment of 3 ton/ha showed value 7.01 of exchangeable aluminum or 21 % lower than control. In Inceptisols Jatinangor, dolomite applications increased the value of soil reaction (pH) after two weeks incubation and the treatment of 3 tonha-1showed pH 5.83 or 11 % higher than control. Otherwise, the application of dolomite decreased the exchangeable aluminum although were not significantly different for that parameters in this soil order. Based on statistical analysis, it proved that liming unable applied effectively on whole soil types or orders due to its relation with the level of soil acidity.

Keywords Soil Reaction, Exchangeable Aluminum, Ultisols Kentrong, Inceptisols Jatinangor.

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Agriculture Journal: The Changing of Soil Reaction and Exchangeable Aluminum on two Different Soil Order due to Dolomite Application

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