Intercropping
Explanation
Soil conservation encompasses various agricultural techniques designed to prevent soil erosion caused by agents such as water and wind. Specific planting patterns are often utilized to minimize the physical impact of rainfall on the topsoil.Analysis of Options:
- Crop rotation Crop Rotation: This refers to the practice of growing different crops in succession on the same piece of land to maintain soil fertility and control pests. While it aids soil health, it does not specifically define the spatial arrangement of alternate rows to prevent rain wash.
- Intercropping: This is the correct answer. Intercropping involves growing different crops in alternate rows and sowing them at different times. Since different crops have varying growth rates and canopy covers, this practice ensures that the soil is not left bare at any one time. This structure breaks the force of falling rain and obstructs the flow of surface runoff, effectively protecting the soil from rain wash.
- Terrace farming Terrace Farming: This method involves cutting broad flat steps or terraces on steep slopes to provide a flat surface for cultivation. It reduces surface runoff and soil erosion on hilly terrain but is structurally distinct from the row-based planting of intercropping.
- Mixed farming Mixed Farming: This is an agricultural system where the land is utilized for growing food and fodder crops while simultaneously rearing livestock. It describes the economic mix of activities rather than a specific soil conservation technique.
Key Takeaway: Intercropping is a soil conservation method where diverse crops are planted in alternate rows to shield the soil from rain impact and reduce runoff velocity.