SCSC 301 Exams 1,2,3,4 Questions and Answers Already Passed
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SCSC 301
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SCSC 301
SCSC 301 Exams 1,2,3,4 Questions and
Answers Already Passed
What is soil porosity, and why is it important?
Soil porosity refers to the amount of open space between soil particles, which is crucial for
water and air movement.
How does soil texture influence water retention?
Clay soils...
SCSC 301 Exams 1,2,3,4 Questions and
Answers Already Passed
What is soil porosity, and why is it important?
✔✔Soil porosity refers to the amount of open space between soil particles, which is crucial for
water and air movement.
How does soil texture influence water retention?
✔✔Clay soils retain water well due to their fine particles, while sandy soils drain quickly
because of larger particles.
What is the role of gypsum in soil management?
✔✔Gypsum improves soil structure by reducing compaction and helping with water infiltration.
Why is soil conservation important in agriculture?
✔✔Soil conservation prevents erosion, maintains fertility, and ensures sustainable crop
production.
What is a soil horizon?
1
,✔✔A soil horizon is a distinct layer of soil with specific characteristics, such as color and
texture, found at different depths.
How does organic matter affect soil fertility?
✔✔Organic matter enhances soil fertility by providing nutrients and improving water retention.
What does a soil pH of 7 indicate?
✔✔A soil pH of 7 is neutral, meaning it is neither acidic nor alkaline.
What is the impact of high soil salinity on plants?
✔✔High soil salinity can inhibit plant growth by reducing water uptake through the roots.
How does soil compaction occur?
✔✔Soil compaction happens when soil particles are pressed tightly together, reducing pore
space and air flow.
Why is crop rotation beneficial for soil health?
✔✔Crop rotation prevents nutrient depletion and reduces the buildup of pests and diseases.
2
,What is the purpose of contour plowing?
✔✔Contour plowing helps reduce soil erosion on slopes by following the natural contours of the
land.
How can over-irrigation affect soil?
✔✔Over-irrigation can lead to waterlogged soil, reducing oxygen availability for roots.
What is the difference between macronutrients and micronutrients in soil?
✔✔Macronutrients are needed in larger quantities, like nitrogen, phosphorus, and potassium,
while micronutrients are required in trace amounts.
Why is soil aeration important?
✔✔Aeration increases oxygen levels, promoting root growth and microbial activity.
What is a cover crop, and why is it used?
✔✔A cover crop is grown to protect and enrich the soil during off-seasons, preventing erosion
and improving fertility.
3
, How does soil color indicate its health?
✔✔Dark soil often indicates high organic matter content, while pale soil may suggest low
fertility.
What causes soil acidification?
✔✔Soil acidification can result from acid rain, the use of certain fertilizers, and natural processes
like plant root activity.
What is leaching, and how does it affect soil?
✔✔Leaching is the loss of nutrients as water drains through the soil, potentially reducing soil
fertility.
Why are legumes beneficial in soil management?
✔✔Legumes fix nitrogen in the soil, improving its nutrient content for future crops.
What is the purpose of soil sampling?
✔✔Soil sampling helps determine nutrient levels and soil health to guide fertilization and
planting decisions.
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