Letters On Modern Agriculture
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A knowledge of the quantity of ammonia or nitrogen in a soil is, therefore, not sufiicient to enable us to judge of its facility or capacity for production. For, even though a better crop be obtained from many fields by the applica- 60 THEOKETICAL AND PKACTICAL AGKICULTURE.
tion of ammonia, on by far tlie great majority of others, the largest quantities of this food produce no effect ; because though the nitrogen must indeed be there, and takes part in the formation of the vegetable mass, yet i...t produces by itself no effect when the conditions are awanting which render it active.
The experiments of Schattenmann made in 1843 in Alsace, are in this respect very instructive. Wheat fields manured by him with salts of ammonia gave a smaller return of grain than another portion of the same land which had received none of this manure. In like manner the experi- ments of the General Committee of the Agricultural Soci- ety of Bavaria in 1857 (see p. 46), show that the produce of barley in grain and straw was rather reduced than other- wise in a field to which carbonate of ammonia had been applied; and that the use of sulphate, phosphate, and nitrate of ammonia raised the produce only a few per cents.
What to read after Letters On Modern Agriculture?
You can find similar books in the "Read Also" column, or choose other free books by Liebig Justus Freiherr Von to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A knowledge of the quantity of ammonia or nitrogen in a soil is, therefore, not sufiicient to enable us to judge of its facility or capacity for production. For, even though a better crop be obtained from many fields by the applica- 60 THEOKETICAL AND PKACTICAL AGKICULTURE.
tion of ammonia, on by far tlie great majority of others, the largest quantities of this food produce no effect ; because though the nitrogen must indeed be there, and takes part in the formation of the vegetable mass, yet i...t produces by itself no effect when the conditions are awanting which render it active.
The experiments of Schattenmann made in 1843 in Alsace, are in this respect very instructive. Wheat fields manured by him with salts of ammonia gave a smaller return of grain than another portion of the same land which had received none of this manure. In like manner the experi- ments of the General Committee of the Agricultural Soci- ety of Bavaria in 1857 (see p. 46), show that the produce of barley in grain and straw was rather reduced than other- wise in a field to which carbonate of ammonia had been applied; and that the use of sulphate, phosphate, and nitrate of ammonia raised the produce only a few per cents.
What to read after Letters On Modern Agriculture?
You can find similar books in the "Read Also" column, or choose other free books by Liebig Justus Freiherr Von to read onlineMoreLess
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