Soil Erosion Control Measures Presented By: Krishna Vala Urmila Parmar Agricultural Information Technology, A nand
What is Erosion control Erosion control is the practice of preventing or controlling wind or water erosion in agricultural land development, river banks ,coastal areas, and construction. The three main principles: Use land according to its capability. Protect the soil surface with some form of cover. Control runoff before it develops by an erosive force.
Vegetation The simplest and most natural way to prevent erosion Plants establish root systems , which stabilizes soil and prevents soil erosion .
Water management mechanisms: Transpiration is the process in water is evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants so amount of infiltrate water taken up by the roots. The root system abstract water from the soil which decrease erosion by water Soil Stabilization: The plant root system bind the soil at the surface. Increase strength of the soil. Soil erosion by runoff water and wind is decrease
2. Contour Farming Contour farming or Contour plowing or Contour bunding is the farming practice of level rows around a hill, as opposed to farming up and down on the hill.
It reduce :- (1)Amount and (2)Velocity of water moving across the soil surface or hill surface The water break allows more time for moving the water by infiltrate into the soil . Can reduce soil erosion by as much as 50% as compare uphill/downhill farming
3. Build retaining walls A retaining wall is a structure that keeps soil, rock and water in place so that it won’t be washed away from the rain. The retaining wall is to one of the purposes prevent soil is eroded by wind, rain and flowing water, but in most likely to be due to the wind and the rain.
Retaining walls
4. Wind Breakers Field windbreaks are linear planting of trees/plant designed to reduce wind speed in open fields, preventing soil erosion and protecting crops from wind damage . Field windbreaks are typically planted in multiple rows perpendicular to prevailing winds.
Windbreaks Reduces soil erosion from wind. Increased relative humidity. Reduced evaporation and. Increased soil moisture. Protects crops from wind damage.
Wind barriers reduce the speed of wind and soil carrying ability of the wind. Tree windbreaks protect an area about 10 times their height . Grass wind barriers are more flexible and can be pushed down by high winds, reducing the protected distance to 5 to 7 times the barrier height .
Conservation tillage Conservation tillage is method of soil cultivation that leaves of the previous year’s crop residue (such as corn stalks or wheat stubble ) on fields before and after planting the next crop to reduce soil erosion and runoff , as well as other benefits such as carbon store in soil.
Mulching In a mulching a material placed on the soil surface to maintain moisture , reduce weed growth , reduce soil erosion and improve soil conditions . Mulching can help to improve crop yield and optimise water use reduce soil and water erosion .
Grass Clippings, Small Leaves, Wood Chips, Pine Needles, Banana Leaves, Palm Fronds, Coconut Husks, Branches. Examples of Organic Mulch:
1.BLACK MULCH Doesn’t allow sunlight to pass, hence arrests the weed growth. Examples of Inorganic Mulch: 2. CLEAR & TRANSPARENT MULCH Allows sunlight to pass & weeds grow.