Question

17 which soil texture would be most helpful for growing plants that require good drainage?
(a) sandy clay loam
(b) silt loam
(c) silty clay
(d) sandy loam

1. a soil sample contains 20% sand, 70% silt and 10% clay, what texture describes this soil?

(a) silty clay
(b) sandy clay
(c) silt loam
(d) loam

1. if you have a soil with 70% clay, 10% sand and 20% silt, what characteristics would you expect this soil to exhibit regarding water retention and nutrient availability?

(a) high drainage and low nutrient retention
(b) high water retention and high nutrient availability
(c) low water retention and high nutrient availability
(d) low water retention and moderate nutrient availability

Explanation:

• Question 17: Sandy loam has larger sand particles which allow for good drainage.
• Question 19: A soil with 20% sand, 70% silt and 10% clay falls into the silt loam category as per soil texture triangle.
• Question 20: Clay has high water - holding capacity and also holds nutrients well. So a soil with 70% clay will have high water retention and high nutrient availability.

Answer:

1. D. Sandy Loam
2. C. Silt Loam
3. B. High water retention and high nutrient availability