A Few Preliminary Observations on a Fertiliser Experiment on Sugar Cane

The experiment was laid down on October 3rd, 1932, at Hazara Estate, Kearsney, the property of The .pH gives an idea of the "force" .of .the free acids in the soil, but one can easily understand that two different soils, with different physica-l properties but the same degree of acidity in terms of pH, will not react in the same manner to identical lime treatment; for example, sandy soils poor in colloids and ,:ery clayey soils. This indicates a necessity of determining the buffer capacity.' To further illustrate this point the following figures were obtained by Dr. Orchard, Chemist at Cedara, on a red soil type; Y;; acre plots having received applications of agricultural lime showed that only applications of two and four tons improved the pH value at all:-