Explain soil erosion, its effects on farmers, prevention methods, causes, and the impact of agricultural waste disposal.

1.1 The phenomenon displayed in the picture is soil erosion.

1.2 Two adverse effects of soil erosion on the farmer are:

• Loss of fertile topsoil, leading to reduced crop yields.
• Damage to agricultural infrastructure like roads and irrigation systems.

1.3 Three measures a farmer can employ to prevent soil erosion are:

• Contour ploughing: Ploughing across the slope rather than up and down.
• Terracing: Creating level steps on slopes to reduce water runoff.
• Cover cropping: Planting non-cash crops to protect the soil when the main crop is not growing.

1.4 Three possible causes of soil erosion are:

• Deforestation: Removal of trees exposes the soil to direct impact from rain and wind.
• Overgrazing: Too many livestock remove vegetation, leaving the soil bare and compacted.
• Poor farming practices: Ploughing up and down slopes or continuous monoculture can degrade soil structure.

1.5 Three negative effects of the incorrect disposal of agricultural waste on soil quality are:

• Soil contamination: Accumulation of harmful chemicals (e.g., pesticides, heavy metals) from waste, making the soil toxic.
• Nutrient imbalance: Excessive application of certain nutrients from waste can lead to nutrient leaching or toxicity, disrupting soil health.
• Reduced soil fertility: Changes in soil pH, microbial activity, and organic matter content due to improper waste, hindering plant growth.