This document discusses different types of soil including loamy soil, peat soil, and chalk soil. Loamy soil is composed of sand, silt, and clay and is well-suited for growing crops, trees, and flowers as it retains moisture well while allowing for good drainage. Peat soil is made of partially decomposed organic matter and is used for horticulture, absorbing oil, and biofiltration. Chalk soil is high in calcium carbonate, alkaline, free-draining, and stony. While it dries out quickly, nutrients are not as available to plants due to its alkalinity.

2. Submitted by
Arafat Rahman Parvez
193 017 031

3. TYPES OF SOIL:- LOAMY,PEAT,CHALK
PRESENTATION TOPIC

4. The upper layer of earth in which plants grow, a black or dark brown material
typically consisting of a mixture of organic remains, clay, and rock particles.

5. 1. Sandy
2. Clay
3. Sil
4. Loamy
5. Peat
6. Chalk
Types of soil
From sources across the web

6. LOAMY SOIL
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.

7. COMPOSITION OF LOAMY SOIL

8. THREE MAIN USES OF LOAMY SOIL
 Raising Crops. Loam soil provides vegetable plants with soil conditions needed to
produce abundant crops during the growing season.
 Planting Trees.
 Growing Flowers.

9. ADVANTAGES LOAMY SOIL
 They have more humus (the organic component of the soil)
 The hold more moisture and nutrients.
 They have better drainage.
 Loamy soils have better infiltration of water and air.
 Loam soils are a better habitat for beneficial microorganisms.

10. So while water is retained easily in loam soils, it does not enter into it easily to
increase bulk and density. As a result, the particles in loam soils have a
tendency to detach. If soil is disturbed by rain, wind or construction, its silt and
clay particles are transported easily and the soil can begin to erode.
DISADVANTAGES LOAMY SOIL

11. PEAT SOIL
Peat is the surface organic layer of a soil that consists of partially
decomposed organic matter, derived mostly from plant material, which
has accumulated under conditions of waterlogging, oxygen deficiency,
high acidity and nutrient deficiency.

12. COMPOSITIONS OF PEAT SOIL
Moisture content of natural peat
in comparison to those of
stabilized peats at various
dosages and compositions of
cement and slag at 950 kg/m 3
siliceous sand.

13. USES OF PEAT SOIL
 Horticulture
 Oil absorbent
 Biofiltration
 Peat uses elsewhere in the world

14. ADVANTAGES OF PEAT SOIL
Peat moss offers numerous advantages and benefits to gardeners who wish to make their
plants thrive. It has several important characteristics that gardeners need, such as high
absorbency, sterile material, acidic ph features, compaction prevention properties, and
more.

15. CHALK SOIL
Chalky soil is comprised mostly of calcium carbonate from
sediment that has built up over time. It is usually shallow, stony,
and dries out quickly.

16. COMPOSITION OF CHALK SOIL
 Alkaline, with a pH of 7.5 or more.
 Usually stony.
 Free draining.
 Often overlays chalk or limestone bedrock.
 This means some minerals, such as manganese (Mg) and iron (Fe),
become unavailable to plants, causing poor growth and yellowing of
leaves.
 This can be remedied by adding fertilisers

17. USES OF CHALK SOIL
chalk is used for raising pH in soils with high acidity. The most common
forms are CaCO3 (calcium carbonate) and CaO (calcium oxide). Small
doses of chalk can also be used as an antacid. Additionally, the small
particles of chalk make it a substance ideal for cleaning and polishing.

18. ADVANTAGES & DISADVANTAGES OF CHALK SOIL
Advantage
It is very free draining, and chalky soils hold little water and dry out
easily.
Disadvantage
Chalky soils are fertile, but many of the nutrients are not available to
plants because of the high alkalinity of the soil, which prevents the
absorption of iron by plant roots.