The best topsoil for growing plants is loam Consider the following with regard to loamy soil 1 ...........

Geography World - Soil and Vegetation

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The best topsoil for growing plants is loam. Consider the following with regard to loamy soil :

1. It is a mixture of sand, clay and silt.

2. For food production, a loam soil containing a small amount of organic material is considered ideal.

3. Loam, combined with straw, can be used as a construction material to build walls in green buildings.

Which of the statements given above is/are correct?

1 and 2

2and 3

1 and 3

All of above

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Explanation:

Loam is soil composed mostly of sand and silt, and a smaller amount of clay (about 40%-40%-20% concentration, respectively). .

Loam soils generally contain more nutrients, moisture, and humus than sandy soils, have better drainage and infiltration of water and air than silty soils, and are easier to work than clay soils. The different types of loam soils each have slightly different characteristics, with some draining liquids more efficiently than others. For food production, a loam soil containing a small amount of organic material is considered ideal. The mineral in a loam soil ideally is about 40% sand, 40% silt and 20% clay by weight. The soil's texture, especially its ability to retain nutrients and water are crucial.

Bricks made of loam, mud, sand, and water, with an added binding material such as rice husks or straw, have been used in construction since ancient times.