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A trial on calcium-magnesium amendment. Effect on soil characteristics and dark tobaccos


, : A trial on calcium-magnesium amendment. Effect on soil characteristics and dark tobaccos. Annales du Tabac, 2 14: 169-178

Magnesian limestone was applied at rates of 0, 2, 4 and 6 t/ha to plots of alluvial soil which had shown decreases in pH during previous long-term fertilizer trials. Soil pH increased by about 0.5 units for every 4 tons of limestone applied over a three-year period. Exchangeable Ca levels in the soil increased relatively little (60%) compared with the rates applied, but exchangeable Mg increased greatly, in proportion to the rates applied.

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