Soil Chemistry Lesson Notes For Advanced Level - senkolink.ac.tz

 

SOIL CHEMISTRY LESSON NOTES FOR ADVANCED LEVEL

OBJECTIVES OF THE TOPIC:

After studying this topic, you will be able to:

♠ explain the meaning and significance of soil colloids.

♠ describe the properties of soil colloids.

♠ explain the mechanism of ion exchange in a soil.

♠ describe cation exchange capacity of a soil sample.

♠ calculate the percentage base saturation of the soil sample.

♠ explain the concept of soil reaction,

(i.e. the soil pH; the acidity and alkalinity of soil) and the significance of soil pH.

♠ describe the organic and inorganic causes of soil acidity.

♠ explain the meaning and significance of liming.

♠ describe the beneficial effects of liming and detrimental effects of over liming.

♠ explain the similarities and differences between fertilizers and manures.

♠ mention the commonly used N, P, and K fertilizers.

♠ classify straight and mixed fertilizers.

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