Question

How do texture and composition vary in case of mountain soil???​

Answer 1

As Somanagouda has suggested, you can alter the proportion of sand silt and clay (that affects soil texture), but adding sand silt or clay to an existing soil. This may be by using soil or aggregate materials with particular particle size (or waste by products such as power station fly ash) to influence workability, geotechnical stability, drainage or moisture holding capacity  This is rarely economical except for high value or intensive land use such as construction sites of sports pitches. Careful regulation of soil texture is