THE GREAT DEPRESSION 1929 1940
THE DUST BOWL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Farmers rotated crops and used terracing
|
|
|
Farmers were careful to not to let the soil lose nutrients and rested the soil often
|
|
|
Farmers forgot to tend their crops
|
|
|
Farmers planting in long straight rows and lack of crop rotation
|
Detailed explanation-1: -The primary causes of soil erosion due to poor farm management are excessive fertilization or irrigation, conventional tillage, monocropping, overgrazing, and more.
Detailed explanation-2: -The two main agents of soil erosion are wind and water. The type of erosion that occurs is generally related to climate. Because the climate of the Great Plains is relatively dry, and strong winds are common, wind erosion is widespread throughout the region.
Detailed explanation-3: -Soil compaction, low organic matter, loss of soil structure, poor internal drainage, salinisation and soil acidity problems are other serious soil degradation conditions that can accelerate the soil erosion process. This fact sheet looks at the causes and effects of water, wind and tillage erosion on agricultural land.
Detailed explanation-4: -Causes – Over-grazing, Deforestation, Action of wind, water, glacier, etc. Topography viz. steep slopes & heavy rainfall; Faulty methods of agriculture, over – irrigation, shifting agriculture etc; Other anthropogenic factors viz. mining, industrial activities etc.