Abstract
IT is a healthy sign of the broad-minded, practical way in which agricultural research is being conducted that this handsome book on weeds should come from Rothamsted. It is necessary to employ the utmost refinements of mathematical and physical discussion in order to determine the water-retaining power of soil particles, and to make recurring counts of the bacteria and other organisms present in a gram of soil, if the expert is to be furnished with the data he requires in order to advise the farmer on the manuring and cultivation of his soil. But the best of manures will fail of effect if the land is not clean, and agricultural investigators run the danger of performing harmonics on the academic string if they do not constantly vitalise their thinking by watching the farmer at work and learning from him where the real difficulties arise.
Weeds of Farm Land.
By Dr. Winifred E. Brenchley. Pp. x + 239. (London: Longmans, Green, and Co., 1920.) Price 12s. 6d. net.
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H., A. Weeds of Farm Land . Nature 106, 496–497 (1920). https://doi.org/10.1038/106496a0
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DOI: https://doi.org/10.1038/106496a0
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