How Crops Grow a Treatise of the Chemical Composition Structure And Life of Th

Cover How Crops Grow a Treatise of the Chemical Composition Structure And Life of Th
How Crops Grow a Treatise of the Chemical Composition Structure And Life of Th
Samuel W Samuel William Johnson
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Illustrations of the former condition are often seen. Bones and masses of manure are not infre quently found, completely covered and penetrated by a fleece of stout roots. On the other hand, the roots which grow in poor, sandy soils, are very long and slender.
Nobbe has described some experiments which com pletely establish the point under notice. ( Vs. St. , IV, p. 212. ) lie allowed maize to grow in a poor clay soil, con tained in glass cylinders, each vessel having in it a quan tity of a fer
...tilizing mixture disposed in some peculiar man- wr for the purpose of observing its influence on the roots. When the plants had been nearly four months in growth, THE VEGETATIVE ORGANS OF PLANTS. 241 the vessels were placed in water until the earth was soft ened, so that by gentle agitation it could be completely removed from the roots. The . Atter, on being suspended in a glass vessel of water, assumed nearly the position they had occupied in the soil, and it was observed that where the fertilizer had been thoroughly mixed with the soil, the roots uniformly occupied its entire mass.

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