Loam soil, clay soil, and sandy soil were observed and tested to determine the best soil for growing plants. Loam soil was found to be the best as it contained a mix of particle sizes, allowing for air and water retention as well as organic matter. Clay soil contained very small particles that compacted easily without draining water well. Sandy soil drained quickly without retaining moisture. An experiment showed radish seeds grew best in loam soil, confirming it provides the necessary support, nutrients, air, and water for optimal plant growth. The right soil type is important for sufficient food production.

1. SOIL
by Y5 St. Gregory´s College

2. Y5 Students
Emiliano Matías Francisco Valentín Tomás
Martiniano Theo Nicolás Juan
Federico Andrés Juan Franco Tomás
Blas Juan Santiago Fernando
Alfonso Santiago Agustín Iván Lucca
Isabella Florencia Donatella Jazmín
Nazarena Malena Lucía Lucía Matilde Mora
María Julieta Sofia Candelaria Flor Gali
Isabella Angelina Juliana Belén
ManuelaTrinidad Martina María Milagros

3. Soil
Soil provides plants with the
support and nutrients they need
to grow.
We want to determine the best
soil for growing plants in a
garden.

4. Observation of the soil in an ecosystem
1. We collected a sample of loam (garden)
soil, clay (construction) soil and sandy soil.
We labelled the pots.
2. We observed the three samples and
compared the physical differences. We felt
each sample with our hands and recorded
the results.

5. SAMPLE OF
SOIL
COLOUR SIZE OF
PARTICLES
ORGANIC
MATTER
WATER AIR
LOAM
(garden)
Dark
brown
Big and
small
A lot of
humus
wet A lot
CLAY grey Very small No or
little
dry A little
SAND Light
brown
big A little dry A lot
Results: Properties

6. We investigated the types of soils
Loam
(garden soil)

7. Loam soil is dark brown and contains a
lot of organic matter called humus. It has
big and small particles that form air
spaces. It can also retain water so it is
moisted.

8. Clay
(used in construction)

9. Clay soil is grey and has almost no organic
matter. It has very small particles that
forms very small air gaps. When it rains,
the water forms puddles and the clay feels
sticky since the clay soil is impermeable.

10. Sandy soil

11. Sandy soil is light brown and has little
organic matter. It has big particles that
forms big air gaps. Water drains easily
through the sand and it is not retained.
This soil becomes dry as water evaporates
on its surface.

12. SOIL PROFILES
• We wanted to see the composition of each soil. For this:
3. We got three flasks with water and we put
the soils into them.
4. We stirred and allowed the samples to settle
for 30 min. We observed the results.

13. Soil Layers (Horizons)
5. Then we mixed the three soils to compare them.

14. 6. Finally, we germinated radish seeds for a week and planted them in the
three different soils.
We germinated radish seeds for 7 days

15. The best soil to grow plants is the
loam because it has a lot of air,
moisture and organic matter that
will be decomposed for the plants to use.
It is very important to choose the
right soil for crops and to take care
of it to produce enough food for the
people.
Conclusions

16. THE END
Thank you