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The Use of Phosphatic Fertilisers in France

Nature volume 88, page 429 (25 January 1912) | Download Citation

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Abstract

COME years ago M. Risler took an inventory of the soils of France, classing them as complete if they contained sufficient food material to yield fair crops, and incomplete if they were markedly deficient in any particular food constituent. Out of a total agricultural area of 49,000,000 hectares, no fewer than 36,000,000 were deficient in phosphates, and could not be made to yield profitable crops without liberal dressings of phosphatic fertilisers—a state of affairs that was not the result of previous bad cropping, but of lack of phosphorus in the original rock material.

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https://doi.org/10.1038/088429a0

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