What is the main cause of loss of soil fertility?a)Excessive use of or...
Compaction of soil
Soil compaction is the main cause of loss of soil fertility. When soil becomes compacted, it reduces the ability of plants to access essential nutrients, water, and oxygen. This leads to a decline in soil fertility over time.
Causes of soil compaction:
- Heavy machinery: The use of heavy machinery on agricultural land can cause soil compaction as the weight of the equipment presses down on the soil, reducing pore space.
- Foot traffic: Excessive foot traffic in gardens or fields can also lead to soil compaction, especially in areas where people walk frequently.
- Rainfall: Heavy rainfall can cause soil particles to become compacted, particularly in clay soils.
Effects of soil compaction on fertility:
- Reduced water infiltration: Compacted soil has fewer pores, which limits the ability of water to penetrate the soil. This can lead to water runoff and erosion.
- Decreased root growth: Compacted soil makes it difficult for plant roots to grow and spread, resulting in stunted plant growth and reduced nutrient uptake.
- Poor aeration: Compacted soil lacks adequate oxygen, which is essential for root respiration and nutrient absorption by plants.
Preventing soil compaction:
- Avoid working on wet soil: Working on wet soil can increase the likelihood of compaction. Wait until the soil is dry enough to crumble easily before tilling or planting.
- Use cover crops: Cover crops can help improve soil structure and reduce compaction by adding organic matter to the soil.
- Implement conservation tillage practices: Reduced tillage or no-till practices can help prevent soil compaction by minimizing soil disturbance.
What is the main cause of loss of soil fertility?a)Excessive use of or...
Compaction of soil reduces pore space, limiting the movement of air, water, and nutrients, thus negatively impacting soil fertility.