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By Thomas Jason Barrett

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Additional resources for Harnessing the earthworm; a practical inquiry into soil-building, soil-conditioning and plant nutrition through the action of earthworms

Sample text

We have shown earthworms working in the soils of England in concentrations of from 25,000 to 53,000 per acre or more and in the soils of the United States in concentrations of from 250,000 to upwards of 2,000,000 per acre. We have shown earthworms in ; England in an annual production of ten tons of castings per acre, favorable environment of the Upper Nile while in the more we have reported on the annual production of more than two hundred tons of castings per acre. The value of the earthworm in nature has been established beyond question.

In work. 59 tons of each acre inhabited by worms. 00056 per cent. It therefore appears that the action of the worms has increased the ammonia content of the soil acted upon . added . to the soil may ; . more than . threefold (321 per cent). 24 pounds. per acre and perhaps not the most important, of the constituents made available in the topsoil by the life- functions of earthworms. Quoting further from Dr. Stockbridge, "This, be it borne in mind, is but a change wrought in one year and capable of yearly THE EARTHWORM IN SCIENTIFIC LITERATURE And, moreover, the entire mass of mould on every few years through their alimentary repetition.

L. " This, too, is a very good descriptive name to indicate the activity of earthworms in soil-building. They literally serve as colloid mills and mechanical homogenized mixture of fine organic and inorganic matter which forms their In the mixing which takes place in the alimentary canal castings. to produce the intimate chemical of earthworm, the ingested materials undergo chemical changes, deodorization and neutralization, so that the resultant the castings (manure) are a practically neutral humus, rich in watersoluble plant food, immediately available for plant nutrition.

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