Soil Science Exam I - October 2, 2006, Exams of Agricultural engineering

Download Soil Science Exam I - October 2, 2006 and more Exams Agricultural engineering in PDF only on Docsity! SC-440 Exam I October 2, 2006 1. (15 Points) The following questions pertain to Soil Morphological Properties in Soils. Point out the Major chemical, physical or morphological differences between the following genetic horizons a) Bt horizon versus Bk horizon - b) Ap horizon versus BC horizon - c) A horizon versus E horizon - d) Ab horizon versus Oa horizon - e) Btn horizon versus By horizon - 2. (16 Points) Please Define the following: a) Ped – b) Polypedon – c) Soil Taxonomy – d) 1:1 Minerals – e) CaCO3 - f) Soil Structure – g) pH – h) CEC - 5. (24 Points) .A simplified model of soil formation identifies 4 major categories of processes important to governing the degree of soil develpment. Please list each of the major categories and identify and define at least 3 processes within each category that are important in soil formation 6. (15 Points) . In the space below please sketch a simplified soil profile with the major the genetic horizons associated with each of the pedogenic processes listed below. Bsed on your knowledge of soil weathering indicate the dominantnt mineralogy of the clay fraction and whether the soil would be acidic or alkaline. a) Calcification b) Podzolization c) Salinization d) Laterization