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Agriculture and water

By Ryan Sims, Alexander Schmucker, Evelina Gretschko and Philipp Heinzel. Agriculture and water. Increasing population New techonologies Economic reasons - export. Why is the use of fertilizers growing?. Toxic – nerve poisoners Algae bloom Pesticide pollution – hard to regulate

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Agriculture and water

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  1. By Ryan Sims, Alexander Schmucker, Evelina Gretschko and Philipp Heinzel Agriculture and water

  2. Increasing population New techonologies Economic reasons - export Why is the use of fertilizers growing?

  3. Toxic – nerve poisoners Algae bloom Pesticide pollution – hard to regulate Natural doesn’t mean good. Nitrogen and phosphorus Problem with photosyntesis „dead zones“ Pesticides

  4. One of the biggest problem is the nitrate content in the water. • The problem has emerged because of the use of nitrogen fertilizers. • Nitrate ion content in the water in Estonia used to be: 60 mg/l...100 mg/l, almost 20% of the people living in polluted area couldn’t use their wells, now the number has reduced 10%. • Natural nitrate ion content in the water is 5- 6 mg/l. Nitrate

  5. Taking water from one place to another. Improves crop productivity Also an environmental concern. The amount of water use varies. Irrigation

  6. Salinization is the collection of soluble salts in soil. Salinization can be caused due to poor irrigation techniques. Nearly half of all land watered in dry areas are affected by salinization. By planting saltbush along with barley in the affected fields, the concentration of salt can be reduced. Salinization

  7. When fields are irrigated, plants are sometimes provided with too much water and they cannot take in the whole amount. The water that is left evaporates leaving all of its minerals behind. Plants can only take in so much minerals which can then lead to salinization which if continued on for years can then lead to the whole field becoming infertile and then having to wait hundreds of years for the field to produce new soil leading to it become fertile again. There is no problem in Germany, Scotland and Estonia because there are no droughts or very high temperatures. But it can be caused by fertilizer and road salt

  8. Soil degradation is the decline in soil quality caused by its improper use. • It’s used for agricultural, pastural, industrial or urban purposes. • Soil degradation is a serious global environmental problem and may be aggravated by climate change. • Examples of soil degradation is the loss of organic matter, decline in soil fertility, decline in structural condition and erosion. Increases in soil carbon can help to reduce greenhouse gas emissions and enhance adaptation to climate change. • In Germany, more than 30,000 km ² is soil degraded, which is more than 9% of the total area. Soil degradation

  9. www.elfond.ee www.maaamet.ee www.loodusajakiri.ee/eesti_loodus/artikkel1070_1062.html www.nationalgeographic.com en.wikipedia.org/wiki/Soil_degradation www.eea.europa.eu Usedsources

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