The Journal of the Royal Agricultureal Society of England

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Seite 490 - ... alone, by 400 Ibs. ammonia-salts alone, and by the " mixed mineral manure" and 400 1 bs. ammonia-salts together— 1. During 8 years (1856-63) in the experimental field in which the results recorded in this paper were obtained. 2. During the same 8 years in an adjoining field, after several wheat crops had previously been taken without manure. 3. During 3 years (1852-54) at Holkham, in Norfolk, on a soil described as a light, thin, and rather shallow, brown sandloam, but resting upon an excellent...
Seite 501 - Carbonic acid, water and ammonia, contain the elements necessary for the support of animals and vegetables. The same substances are the ultimate products of the chemical processes of decay and putrefaction. All the innumerable products of vitality resume...
Seite 333 - Moisture 4-72 Organic matter and water of combination .. .. 11-03 Oxides of iron 9-98 Alumina 6'06 Carbonate of lime 12-10 Sulphate of lime -75 Magnesia and alkalies 1-43 Soluble silica (soluble in...
Seite 93 - Rothamsted, the first commenced was on turnips ; and in accordance with the results previously obtained on a small scale, and apparently quite consistently with the views put forth by Liebig as to the relative importance of supplying the mineral constituents, the effects of the phosphatic • manures were most striking, especially in the early stages of growth ; though, when the experiments of the first year were concluded, it was found that certain organic manures had very materially influenced...
Seite 501 - It follows, then, from the preceding observations, that the advantage of the alternate system of husbandry consists in the fact that the cultivated plants abstract from the soil unequal quantities of certain nutritious matters. " A fertile soil must contain in sufficient quantity, and in a form adapted for assimilation, all the inorganic materials indispensable for the growth of plants. " A field artificially prepared for culture, contains a certain amount of these ingredients, and also of ammoniacal...
Seite 501 - Ammonia, when used as a manure alone, and when there is a want of mineral constituents in the soil, is like the spirits which the labourer takes in order to increase his available labour, power, or imagination ; and, like that stimulant, its action, in this case, is followed by a corresponding exhaustion.
Seite 502 - I shall adopt it as being generally understood. Organic manures are those which are capable of yielding to the plant, by decomposition or otherwise, organic matter — carbon, hydrogen, oxygen, and nitrogen — constituents which uncultivated plants derive originally from the atmosphere. Inorganic manures are those substances which contain the mineral ingredients, of which the ash of plants is found to consist.
Seite 89 - ... for twenty successive seasons, without either fallow or a fallow crop, and in which the lowest produce was in the first year 15, and in. the last...
Seite 267 - I know not what epithet to give this soil ; sterility falls short of the idea ; a hungry vitriolic gravel — I occupied for nine years the jaws of a wolf. A nabob's fortune would sink in the attempt to raise good arable crops in such a country...
Seite 126 - ... country at large was, according to the reports, by no means so good as that in the experimental field is seen to have been. Eighth Season, 1859. The concluding quarter of 1858 was much drier than usual, and, during a considerable portion of it, it was very cold. The latter part of December, however, and January and February, 1859, were very fine and mild; March was also, upon the whole, mild, but with more rain ; in April, too, a good deal of rain fell, and the latter part of the month was stormy,...

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