PES Final Exam Study Guide with Complete Solutions!!

PES Final Exam StudWhat are three types of soil water from a physical standpoint? What are the four terms used to describe their upper and lower boundaries (moisture levels)? - ANSWER-Gravitational, capillary, hygroscopic Maximum retentive capacity, field capacity, wilting point, hygroscopic coefficient What are the 2 types of water from a biological standpoint - ANSWER-Available (between FC and PWP) Unavailable (held at tensions too high) Give the equation and units for volumetric water content - ANSWER-Ov = (Om * Db) / (1g/cm3) units: cm3/cm3 Give the equation (and units) for gravimetric water content - ANSWER-Om = (mass of wet soil - mass of dry soil) / mass of dry soil OR Om = mass of water / mass of dry soil units: g/g Give the equation for bulk density - ANSWER-Db = mass of dry soil (g) / total volume (cm3) units: g/cm3 Give the equation for volume of a cylinder - ANSWER-V = (pi)(r^2)(h) Give the common cations present in soil solution - ANSWER-Na+, Ca+, Mg2+, and Al3+ What is flocculation? Dispersion? Ions associated with each? - ANSWER-Flocculation: attraction of colloids (Ca+ and Mg2+) Dispersion: repulsion of colloids (Na+) y Guide with Complete Solutions!!