Introduction to Soil Science - JSS3 Agricultural Science Past Questions and Answers - page 2
Which type of farming involves constant movement of livestock in search of grazing land?
Subsistence farming
Shifting agriculture
Nomadic herding
Commercial farming
What is the primary goal of soil conservation methods?
To increase soil erosion
To deplete soil fertility
To enhance soil health
To promote desertification
Which branch of agricultural science focuses on the study of soil?
Animal science
Crop science
Soil science
Horticulture
What is the main advantage of traditional farming methods?
High productivity
Adoption of modern technology
Minimal environmental impact
Reliance on synthetic pesticides
Which type of erosion involves the removal of a thin layer of soil across a broad area?
Sheet erosion
Wind erosion
Gully erosion
Coastal erosion
What is the significance of soil conservation techniques in agriculture?
Soil conservation techniques are essential for maintaining soil health and fertility, preventing erosion, and promoting sustainable agriculture. By implementing these techniques, farmers can safeguard their land against degradation, preserve valuable topsoil, and ensure long-term productivity. Ultimately, soil conservation plays a critical role in supporting food security and environmental sustainability.
How do erosion and its types impact agricultural productivity?
Erosion, whether it's sheet, gully, or wind erosion, can significantly diminish agricultural productivity by stripping away fertile topsoil, reducing water retention capacity, and destabilising land. This can lead to decreased crop yields, loss of arable land, and increased vulnerability to extreme weather events.
What are some common soil conservation methods employed by farmers?
Farmers utilise various soil conservation methods such as contour ploughing, terracing, strip cropping, and no-till farming to mitigate erosion, improve soil structure, and conserve moisture. These methods help to minimise soil disturbance, enhance water infiltration, and promote the retention of organic matter.
How do conservation structures contribute to soil conservation efforts?
Conservation structures such as retention ponds, check dams, and grassed waterways help to control runoff, reduce soil erosion, and manage water flow on agricultural lands. These structures effectively trap sediment, slow down water movement, and promote infiltration, thereby minimising the risk of soil erosion and preserving soil fertility.
Why is soil conservation planning essential for sustainable agriculture?
Soil conservation planning involves assessing soil erosion risks, identifying conservation measures, and implementing strategies to protect soil resources. It allows farmers to tailor conservation practices to their specific land conditions, cropping systems, and environmental challenges.