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Q: How many years for 1 cm of topsoil to form?
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How long does it take for one cm of topsoil to form?

It depends on where your at, in the rainforest it can happen in a year, while in other places take hunreds of years.


How long did it take to form 30 cm of chalks on the south downs?

30 years


Examples of food crops that may produce poor quality when the topsoil is eroded?

All of them.Topsoil is absolutely necessary to grow any plant, unless you wanna get into hydroponics (growing some plants such as tomatoes in water only).This is what Wikipedia says about topsoil:Topsoil is the upper, outermost layer of soil, usually the top 2 inches (5.1 cm) to 8 inches (20 cm). It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biological soil activity occurs.Plants generally concentrate their roots in and obtain most of their nutrients from this layer. The actual depth of the topsoil layer can be measured as the depth from the surface to the first densely packed soil layer known as subsoil.A major environmental concern known as topsoil erosion occurs when the topsoil layer is blown or washed away. Without topsoil, little plant life is possible. It takes approximately 100 years for 1 inch (2.5 cm) of topsoil to be deposited, if there is the correct ratio of organic material, inorganic material, and moisture. This can be improved by using the terra preta system. However, there are 25 billion tons of topsoil lost each year.


What is topsoil?

Topsoil is made of humus and mineral particles weathered from the soil's parent material.


How many cm is 6.5?

The answer will depend on what 6.5 is: 6.5 cm, 6.5 micrometres, kilometres, light years? Who knows? And you are not telling!


How do you planting petchay?

To plant petchay by direct seeding into soil, but can be transplanted, cover seeds to a depth of 1 cm by raking or spreading more topsoil. Plant spacing is 10 cm between plants and 20 cm between rows. Water immediately after planting.


Can top soil hold water?

yes. topsoil always has some water in it. The amount varies with soil type. from 4 to 10 cm. of soil per cm. of water. That is how plants stay alive between rainfalls.


How much is a centimeter of topsoil?

The cost of a centimeter of topsoil can vary depending on factors such as location, quality, and supplier. On average, prices can range from $0.50 to $3 per square foot. However, it's important to contact local suppliers for accurate pricing information in your specific area.


How do you plant a petchay plant?

To plant petchay by direct seeding into soil, but can be transplanted, cover seeds to a depth of 1 cm by raking or spreading more topsoil. Plant spacing is 10 cm between plants and 20 cm between rows. Water immediately after planting.


How many years does it take for a stalactite to grow?

it takes 1 million years for a stalagtite to grow 1 cm


How do you write 25 centimetres as a fraction?

25 cm in fraction form can be 25/1 cm Thats the easiest anywayit can also be 625/25 cm there are many combinations that way


How do you write centimeter in short form?

The abbreviation is "cm".