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Sample C.--Remarks and recommendations.
This soil is a clay loam, the colour, especially that of the sub-soil, being a deep
yellow. It is the heaviest soil of the present series. The sub-soil is distinctly heavier than
the top-soil, but there is probably sufficient coarse and fine sand to allow of fair drainage.
The amounts of water-soluble salts are low. The reaction of the soil is strongly acid.
The amounts of the mineral plant food constituents are all very low. The percent-
age of nitrogen is probably sufficient, but the ratio of carbon to nitrogen is decidedly
higher than usual. There is an unusually high percentage of acid-soluble alumina. The
ratio of silica to alumina in the clay fraction of the soil is below 2; this indicates a
tendency for the soil to become lateritised and this is usually a sign of poor fertility.
The soil needs lime both to correct the acidity and also for crop growth, as well
as potash and phosphoric acid.
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