Soil Survey of Milwaukee County, Issue 56

Front Cover
State, 1919 - Soil surveys - 63 pages
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Page 96 - The average date of the last killing frost in the spring is April 9, and the average date of the first killing frost in the fall is October 31.
Page 42 - ... they are, intermediate in chemical composition between these two extremes. Moreover, their position is such that they have received a considerable deposition of fine silt from the higher land with its larger content of plant food. These soils have in the surface 8 inches approximately 2000 pounds of phosphorus per acre; from 30,000 to 40,000 pounds of potassium; and approximately 10,000 pounds of nitrogen.
Page 8 - A report is also made, to accompany and explain the map, and this is based upon a careful study of the soils within the region surveyed, and upon such other features as have a direct bearing upon the agriculture of the area. It is the object of this survey to make an inventory of the soils of the State, and to be of practical help to farmers by...
Page 23 - Very litle of the type is for sale, but prices generally quoted range from $60 to $100 an acre. The following table gives the results of mechanical analyses of samples of the soil and subsoil of this type : Mechanical Analyses of Holston Silt Loam.
Page 42 - These soils have in the surface 8 inches approximately 2,000 pounds of phosphorus per acre; from 30,000 to 40,000 pounds of potassium; and approximately 10,000 pounds of nitrogen. Since they are surrounded by highland, the subsoils of which are rich in ground limestone which is being continuously dissolved and carried to the lower lands by percolating waters, they are as a rule not acid, and in fact usually contain considerable quantities of lime carbonate. In spite of their large content of both...
Page 95 - The Rock River Basin has the longest growing season in the state, averaging about 170 days, "which is as long as that of central Illinois, longer than central Indiana or Ohio, and about equal to the valley of Virginia and -central Maryland. The annual temperature curves also show here a northward bend, and though the winters (20) are cooler than along the lake, the springs (45) and the summers (70) are warmer. Hence this section is the best corn area in the state. The temperature of the Rock...
Page 7 - Texture is determined in the field by rubbing the soil between the thumb and fingers, and with experience one soon becomes expert at judging the size of soil grains. This field judgment is verified in the laboratory by a mechanical analysis, which is made by a simple method of separating soil grains into -different groups, of which there are seven. These are known as clay, silt, very fine sand, fine sand, medium sand, coarse sand, and fine gravel. A chemical analysis is also made of the soil to determine...
Page 8 - ... surface area to which moisture may adhere. Texture is determined in the field by rubbing the soil between the thumb and fingers, and with experience one soon becomes expert at judging the size of soil grains. This field judgment is verified in the laboratory by a mechanical analysis, which is made by a simple method of separating soil grains into -different groups, of which there are seven. These are known as clay, silt, very fine sand, fine sand, medium sand, coarse sand, and fine gravel. A...
Page 67 - Clerk and Stenographer. Angeline Doll, Clerk. GEOLOGY DIVISION: William O. Hotchkiss, In charge. Ernest F. Bean, Geologist, Mineral Land Classification. Thomas C. Chamberlin, Consulting Geologist. Pleistocene Geology. Edward O. Ulrich, Consulting Geologist, Stratigraphy, by cooperation of the USGS Henry R.
Page 152 - If three tons of refuse lime are to be applied per acre, and the machine is set at four loads per acre, as on lowest gear, then each load must contain at least 1500 pounds of lime. It should be remembered that most acid soils are also deficient in available phosphorus, but applying lime will not add to the total amount of phosphorus in the soil. The need of phosphorus may be so great that but little result will be secured from liming until phosphorus is also added. Frequently the application of phosphorus...