Write the meanings for the following :-
1. Clayey soil :-
2. Sandy soil :-
3. Loamy soil :-
4. Humus :-
5. Percolation :-
6. Water retention :-
7. Moisture :-
8. Soil profile :-
Answers
Answer:
1. a soil that contains a high percentage of fine particles and colloidal substance and becomes sticky when wet.
2.Sandy Soil is light, warm, dry and tend to be acidic and low in nutrients. Sandy soils are often known as light soils due to their high proportion of sand and little clay (clay weighs more than sand). These soils have quick water drainage and are easy to work with.
3.Loam is soil composed mostly of sand, silt, and a smaller amount of clay. By weight, its mineral composition is about 40–40–20% concentration of sand–silt–clay, respectively.
4.the organic component of soil, formed by the decomposition of leaves and other plant material by soil microorganisms.
5.In physics, chemistry and materials science, percolation refers to the movement and filtering of fluids through porous materials. It is described by Darcy's law.
6.Water retention occurs when excess fluids build up inside your body. It is also known as fluid retention or edema. Water retention occurs in the circulatory system or within tissues and cavities. It can cause swelling in the hands, feet, ankles and legs.
7.water or other liquid diffused in a small quantity as vapour, within a solid, or condensed on a surface.
8.A soil profile is a vertical section of soil like the diagram above. It allows you to examine the structure of soil. A soil profile is divided into layers called horizons. The main soil horizons are A, B, C and D. Most important for plant growth, the A and B horizons are the top two layers of the soil.