In what way is color an indicator of soil drainage?
A)Well-drained soils tend to be well aerated and red in color.
B)Poorly drained soils tend to be well oxidized and red in color.
C)Moderately drained soils tend to be green in color.
D)Colors of soils are more reflective of organic matter than of drainage.

Question

Quizplus · Accepted Answer

Well-drained soils tend to have good aeration, which encourages the presence of iron oxides. Iron oxides give soils a reddish color. So, well-drained soil tends to be red in color.

Answer: B
 Poorly drained soils tend to be boggy or waterlogged, which reduces the amount of oxygen present in the soil. This leads to poorly oxidized soils, which tend to be red in color.

Answer: D
 While soil color can provide some indications of the drainage status, other factors like the organic matter content of the soil can also influence soil color. Therefore, color alone cannot always be used as a reliable indicator of soil drainage.

In What Way Is Color an Indicator of Soil Drainage