| Outcomes of Nasek / Mineral circle / From soil to roughage / Soil | Wednesday 11.2.2009 |
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Soil Different soil types Sandy There are many kinds of sand. For example till and silt. Every sand type is defined by the size of the rocks in it. Water leaching is quite good in sand and it's not good for plants. Farmes think that sandy is quite hard to cultivate because of a leaching of nutrients. Sandy is the most common soil type in many countries. Turf Turf is dark and soft soil type. It is born when plants die and go into the ground. This process takes a long time and to be successful it needs a lot of water. Leaching of water is not good and it can cause problems with ditchies on a field. Turf contains a lot of nitrogen and also phosphorous but not so much calium. Clay Well workable type of soil. Humidity and airy are moderate. Cracing improves its structure. Clay includes plenty of nutrient, for example potassium and calsium. Farmers think that clay soil is good for plants because of nutrients but water leaching is not so good and it causes same kind of problem as with turf. Using machines is also hard because clay sticks to tyres very easily.
What things affect on structure of soil? Cultivating is good for soil, because you get more air into soil. So the micro organisms can work better. But too much cultivating is bad for soil structure. When you just the right crop rotation you can just much more minerals in the soil. When you spread your manure on a field and it’s begins to rain very hard, it’s not good for minerals in soil. It’s leaching into water. But when it’s too dry nothing will grow on it. And the structure of soil will be closed. It’s the same with heavy machines. The machines make tracks into the ground. When farmers inject manure into soil it damages the structure of soil. According to farmers that can be seen all the year. Summarize:+ - Cultivating (air in the soil) Cultivating (too much can) Crop rotation Water (too much/less) Direct seeding Heavy machines Ground frost Inject of manure Big roots
How the bad structure of soil affects on plants and minerals? - Water leaching - Anaerobic soil -> Minerals get lost -> Micro organismes can't work Cause: Plants don't grow Page updated 16.5.2006 |
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