SOIL AND WATER MANAGEMENT CCA INTERNATIONAL EXAM ACTUAL 2025/2026 Q&A LATEST 100% PASS

SOIL AND WATER MANAGEMENT CCA INTERNATIONAL EXAM ACTUAL 2025/2026 Q&A LATEST 100% PASS Which of the following is negatively charged? anion cation AEC hyperion - Answer -anion cations are held on the CEC by ______charges on clay and organic matter neutral gravitational positive negative - Answer -negativewhich of the following clays contributes most to CEC if the same amount of each clay is present? montmorillonite hydroxyapatite illite kaolinite - Answer -montmorillonite potassium fixation occurs when which of the following clays is present in soil? montmorillonite humite illite kaolinite - Answer -illite If a soil has an EC of 0.6 siemens per meter and contains 20 percent sodium on the CEC, it is a ______ soil. a. saline b. sodic c. saline-sodic d. acid - Answer -saline-sodicwhat is the textural class of soil that is 10 percent clay and 35 percent sand? sandy loam sand silt loam loamy sand - Answer -silt loam which of the following increases as a soils clay content increases? surface area bulk density pore size particle size - Answer -surface area Which of the soil textures listed below has the highest porosity and lowest bulk density? sandy loam silt loam loamy sand clay - Answer -clay the maximum value for plant avaliable water is_______greatest in soils with large pores smallest in soils with small pores the difference between field capacity and wilting point different in different climates - Answer -the difference between field capacity and wilting point which of the following textural classes has the largest potential available water? silt loam sandy loam silty clay loam clay - Answer -silt loam which kind of soil structure would be typical for a good seed bed? granular blocky platy massive - Answer -granular