How does soil lose its fertility?

Answer 1

If you mean "how can rain deplete nutrients from soil" then there are a number of processes by which this can happen. As well as physically eroding soil, rainwater can "leach" nutrients from soil and move then downward in the soils profile or laterally in groundwater. The composition of the rainwater can affect this process. E.g. when acid rain falls on soils, cation exchange can occur and minerals such as calcium, magnesium and potassium bonded to soil particles are released by the acid and "washed" out of the soil into deeper strata where they are no use to plants. Under natural circumstances a balance may be achieved and as plants decay they replace nutrients that are used by plants and leached. If an area of vegetation is suddenly cleared however, thus exposing it to increased rainfall and lack of organic matter input in the system, the nutrient levels may decrease over time as they are leached but not replaced.

Answer 2

Depending on the nutrient that is missing, a plant may suffer from several diseases with symptoms such as leaf discolouration. Yellow on newly grown leaves of a plant are usually a clear indicator that a plant is not getting enough of a certain nurtient. Other symptoms may be that the plant aborts growing preparations for fruits, flowers and other buds. If a plant is receiving no nutrients whatsoever, it is likely to die if exposed to common bacteria found in most gardens. If kept in a fairly sterile environment (as plant still need certain types of bacteria to live), they may live but their growth will be hindered.

Plants that grow in areas of low nutrient soil, such as swamps, have adapted themselves to obtain nutrients by other methods. The venus fly trap is one such example, as it traps insects and other small creatures into its traps and gains nutrients by digesting the creature with acid. The fact that plants have evolved such unique ways of gathering nutrients show that they are a very important part of a plant's life and that those completely without them did not survive.

Answer 3

When soil loses nutrients, nothing will grow there.

Answer 4

Well, the rain may flood the ground to wash away neutrients, or push them under ground. of course, the rain may also carry neutrients of its own, so it is rather up to you to decide.

Answer 5

An abundance of rainfall washes out valuable nutrients from the soil which causes plants to die. This is because they can't get the amount of nutrients they need to function.

Answer 6

soil loses its fertlity when it does not get enough water

Answer 7

The loss of nutrients from soil is referred to as soil erosion.

Answer 8

it turns thicker as in the grains