Hydraulic conductivity of soil is very low in case of

✅Explanation:
-Alkali soils, also known as sodic soils, have a high concentration of sodium ions.
-These sodium ions cause the clay particles to disperse and swell, leading to a reduction in the size and number of pores in the soil.
-This reduced porosity significantly hinders the movement of water through the soil, resulting in very low hydraulic conductivity.

📌 Other Options Explanations:
-Option A: Acid soils: Acid soils can have structural issues due to the leaching of certain cations,
-Option B: Saline soils: Saline soils have high salt content, which can affect plant growth.
-Option C: Loam soils: Loam soils have a balanced mixture of sand, silt, and clay, providing good drainage and water-holding capacity.