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Homework_3 (1)

Homework_3 (1) - Soil Science 100 Name ID Fall 2009 Lab...

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Soil Science 100 Name ID __________________ Fall 2009 Lab. Section____________________ Homework 3 Due Monday October 12 Value 10 points 1. Add the master horizon and subordinate horizon symbols (see Table 12-4 in the text) in the blank space to the left of the horizon depths. (5 points) ___--0 to 1 inch; slightly decomposed needles, leaves, twigs, and woody materials. ___--1 to 4 inches; dark brown (7.5YR 4/4) gravelly loam, light brown (7.5YR 6/4) dry; moderate very fine subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; many fine and very fine roots; many fine irregular pores; 25 percent gravel; very strongly acid (pH 4.8); clear smooth boundary. (2 to 4 inches thick) ___--4 to 8 inches; yellowish red (5YR 5/6) gravelly loam, reddish yellow (7.5YR 6/6) dry; moderate very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many fine and very fine roots; many very fine continuous tubular pores; few faint clay films on ped faces and in pores; 25 percent gravel; very strongly
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Homework_3 (1) - Soil Science 100 Name ID Fall 2009 Lab...

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