Question

question 10
soil texture can be determined in the field by compressing a ball of moist soil in the hand. if it falls apart easily, the soil texture is probably
a sand
b silt
c clay

which of the following elements has low soil mobility?
a nitrogen
b phosphorus
c potassium
2 points

Explanation:

Phosphorus has low soil mobility compared to nitrogen and potassium. Nitrogen can exist in forms that are easily leached or volatilized, and potassium is also relatively mobile in soil. Phosphorus, on the other hand, reacts with soil components to form insoluble compounds, reducing its mobility. In terms of soil texture, if a moist soil ball falls apart easily, it is likely sand as sand particles are large - sized and have poor cohesion.

Answer:

Question 9: B. Phosphorus
Question 10: A. Sand