Percolation rate in different types of soil | Soil | Biology скачать в хорошем качестве

Percolation rate in different types of soil | Soil | Biology

In this activity, we measure the percolation rate of different kinds of soils like sandy soil, loamy soil and clay. Percolation rate is the speed at which water flows though a column of soil. Take three identical conical flasks with funnels and plug the funnels with some cotton as shown. Add 20 grams of sandy soil, loamy soil and clay in the three funnels, then slowly add 50 g of coloured water over the soil and leave the flasks undisturbed for some time. After a while, pour the water collected in the flasks into three beakers. You will see that the flask under the sandy soil has the most water and the flask under the clay has the least water. The sandy soil has the largest particle size while the clay has the smallest particle size. This tells us that the percolation rate depends directly on particle size and is the highest for sandy soil while the clay soil has the highest retention capacity.