Topsoil is filled with nutrients which helps the plants grow. So is topsoil and dirt the same? Looking at the graph below, you can see there diff levels or horizons. The top lay, Horizon Organic, is about zero to two inches deep. This is the basic life giver, which Horizon O is important in the movement of nutrients from the above the soil from the environment, to below the soil. Organic was created from decaying of plants, animals, and our wastes. The organic pulls the nutrients to the other lays which roots feed off. Organic also and plays a role in water retention on the surface of the …show more content…
With this experiment we tried to decrease any forms of error. We didn’t have to write down the other groups finding, which cut out if they had any errors. We recheck the levels twice, and also, cleaned out all the cups, and measured twice. The only error, I could think of having was using all the dirt, we should have saved some. Also, Sample B which I picked had sticks, and a worm in it. This was also one of the reasons why I picked sample B. The ribbon test was performed, but the finding weren’t good. Only good thing was that we stated sample A was some kind of clay, because it did roll into a ball, and sample B didn’t. Sample B was a lot more gritty than sample A. I felt this could also be an error, because I didn’t know if we were doing it right. Sample A did make a ribbon at 5cm, others being 4cms So when one person thinks is dirt dirty? Remember there are 12 diff types of soil, with sample A being possible clay, and sample B could be have been silty loam. If you want grow a perfect garden, when researching this topic, I found tons of websites with, http://extension.missouri.edu/p/MG4 being a very good one. Also, I added a good chart I found on Google images at the bottom. So go out there and get