| Massachusetts - 1922 - 992 стор.
...year the northern part of the county was surveyed. The official report, to be prepared and published by the Bureau of Soils of the United States Department of Agriculture, will not be ready for some time, but some of the general results can be stated. The county was found... | |
| 1910 - 1160 стор.
...synthesis ; minerals of agricultural importance ; and soil formation, classification, and description, as conducted by the Bureau of Soils of the United States Department of Agriculture. It also contains a brief reference to crop requirements, and to sources of plant food. This part, though... | |
| New Jersey Agricultural Experiment Station - 1919 - 1160 стор.
...New Jersey has been engaged in making a detailed soil survey. The work is being carried out jointly by the Bureau of Soils of the United States Department of Agriculture, the State Geological Survey, and the State Experiment Station. It consists of mapping the soils by... | |
| 1921 - 654 стор.
...accompanying this report the field work was supplemented by making use of the county soil maps prepared by the Bureau of Soils, of the United States Department of Agriculture; of the Reconniosance Survey of the Ozark Region, by CF Marbut, of the Bureau of Soils; and of the Geological... | |
| 1922 - 682 стор.
...in certain water-softening processes. SOIL SURVEY The Soil Survey, carried on in co-operation with the Bureau of Soils of the United States Department of Agriculture, is providing a detailed inventory of the soil resources of New Jersey, area by area. The progress of the... | |
| North Carolina. Dept. of Agriculture - 1901 - 990 стор.
...from virgin and cultivated areas have been collected and have been and are being analyzed physically by the Bureau of Soils of the United States Department of Agriculture, to ascertain the kinds and amounts of the various materials, as sand, clay, silt, etc., of which they... | |
| American Geographical Society of New York - 1909 - 902 стор.
...Agriculture of the University of Wisconsin are soon to begin a co-operative soil survey of the state assisted by the Bureau of Soils of the United States Department of Agriculture. The last session of the legislature authorized the making of a soil survey and a soil map "to ascertain... | |
| Harold Child Bryant - 1913 - 454 стор.
...science to the answering of man's needs and desires in certain well-defined directions. For example, the Bureau of soils of the United States Department of Agriculture is for the purpose of applying chemistry, physics, and geology to the end of increasing the productivity... | |
| 1907 - 494 стор.
...laboratory for study. Learn to distinguish and name different soils according to the classification by the Bureau of Soils of the United States Department of Agriculture. Study root system of the leading farm crops, noting their general characteristics and how these are... | |
| Philippines. Bureau of Agriculture - 1903 - 224 стор.
...recommended by the chief of the Bureau that soil investigations be carried on, similar to the work conducted by the Bureau of Soils of the United States Department of Agriculture. Arrangements were made for t tie temporary transfer of some one employed in the Bureau of Soils to... | |
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