Abstract
IT has long been recognised that the chemical composition of the soil affords a very imperfect index to its fertility, partly due to the fact that only recently have methods of analysis been devised to discriminate between the total plant food in the soil and that which is active and likely to be immediately available for the plant, but chiefly because the physical texture of the soil and its power of maintaining a supply of water to the growing plant is a much larger factor in crop production than its store of nutrient material.
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H., A. A New Theory of the Soil 1 . Nature 69, 58–59 (1903). https://doi.org/10.1038/069058c0
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DOI: https://doi.org/10.1038/069058c0