Soil Science and Management, 4E

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IN THE NAME OF ALLAH, THE COMPASSIONATE, THE MERCIFUL.

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Presentation transcript:

Soil Science and Management, 4E Chapter 11 Soil pH and Salinity T11-1 Soil Science and Management, 4E

Soil Science and Management, 4E Objectives Describe soil pH and its development Describe how pH affects plant growth Tell how to lime or acidify soil Describe saline and sodic soils Describe methods to treat saline and sodic soils T11-2 Soil Science and Management, 4E

Soil Science and Management, 4E Terms to Know Acid soil Agricultural lime Alkaline soil Basic soil Buffer test Buffering Burned lime Calcareous soils Calcitic limestone Calcium carbonate equivalent Chemical guarantee Dolomitic limestone Fluid lime Gypsum Hydrated lime Marl Physical guarantee Saline soil T11-3 Soil Science and Management, 4E

Soil Science and Management, 4E Terms to Know Saline-sodic soil Sodic soils Sodium adsorption ratio Soil reaction soluble salt Total neutralizing power T11-4 Soil Science and Management, 4E

Soil Science and Management, 4E Soil pH Figure 11-1 T11-5 Soil Science and Management, 4E

Soil Science and Management, 4E Development of Soil pH Figure 11-3 T11-6 Soil Science and Management, 4E

Soil Science and Management, 4E Development of Soil pH Causes of acidity Figure 11-4 T11-7 Soil Science and Management, 4E

Soil Science and Management, 4E Development of Soil pH Causes of acidity Figure 11-5 T11-8 Soil Science and Management, 4E

Soil Science and Management, 4E Effects of pH on Plants Figure 11-6 T11-9 Soil Science and Management, 4E

Soil Science and Management, 4E Effects of pH on Plants Effect of pH on nutrient availability (See Figure 11-7) pH and element toxicity pH and soil organisms T11-10 Soil Science and Management, 4E

Soil Science and Management, 4E Soil pH Figure 11-7 T11-11 Soil Science and Management, 4E

Soil Science and Management, 4E Liming Soil Benefits of liming Liming materials How lime works (See Figures 11-9, 11-10) How much lime to apply Effect of cation exchange capacity on liming (See Figures 11-11, 11-12, 11-13) Neutralizing power of lime (See Figure 11-14) Lime fineness (See Figure 11-15) Lime application T11-12 Soil Science and Management, 4E

Soil Science and Management, 4E Liming Soil Figure 11-9 T11-13 Soil Science and Management, 4E

Soil Science and Management, 4E Liming Soil Figure 11-10 T11-14 Soil Science and Management, 4E

Soil Science and Management, 4E Liming Soil Figure 11-11 T11-15 Soil Science and Management, 4E

Soil Science and Management, 4E Liming Soil Figure 11-12 Figure 11-13 T11-16 Soil Science and Management, 4E

Soil Science and Management, 4E Liming Soil Figure 11-14 T11-17 Soil Science and Management, 4E

Soil Science and Management, 4E Liming Soil Figure 11-15 T11-18 Soil Science and Management, 4E

Soil Science and Management, 4E Acidifying Soil Figure 11-17 T11-19 Soil Science and Management, 4E

Soil Science and Management, 4E Soil Salinity Figure 11-18 T11-20 Soil Science and Management, 4E

Soil Science and Management, 4E Soil Salinity Saline soils (See Figures 11-19, 11-20, 11-21) Sodic soils (See Figure 11-23) Saline-sodic soils Reclaiming salted soils Managing salted soils (See Figures 11-24,11-25) Salted water disposal T11-21 Soil Science and Management, 4E

Soil Science and Management, 4E Saline Soils Figure 11-19 T11-22 Soil Science and Management, 4E

Soil Science and Management, 4E Saline Soils Figure 11-20 T11-23 Soil Science and Management, 4E

Soil Science and Management, 4E Saline Soils Figure 11-21 T11-24 Soil Science and Management, 4E

Soil Science and Management, 4E Sodic Soils Figure 11-23 T11-25 Soil Science and Management, 4E

Soil Science and Management, 4E Managing Salted Soils Figure 11-24 T11-26 Soil Science and Management, 4E

Soil Science and Management, 4E Managing Salted Soils Figure 11-25 T11-27 Soil Science and Management, 4E

Soil Science and Management, 4E Summary Soil pH Alkaline-pH between 7.0 and 10.0 Acid soil-pH between 4.0 and 7.0 Acid soils affect plant growth by lowering the availability of phosphorus and other nutrients Acid soils treated with lime Alkaline soils render several micronutrients unavailable and create problems associated with salted soils Saline soils treated by flooding T11-28 Soil Science and Management, 4E