Rotating crops involves growing different crops in a particular area across growing seasons. Topography, or elevation, plays a major role in making possible erosion, itself a process that can be either beneficial or detrimental. Among such structures are banks, hedgerows, walls of earth or other materials, and silt fences such as one sees at construction sites. This practice of farming on slopes takes into account the slope gradient and the elevation of soil along the slope. Various crops ripen at different times of the year and are harvested at intervals. The A horizon itself contains a large amount of , and thus it may be black, or at least much darker than the soil below it.
Many factors such as length, the steepness of slopes, type of soil, and amount of precipitation determine the feasibility of terracing. Individuals may opt to find a less harmful way to till the soil. Desertification Much of North Africa lies under the cover of a vast desert, the. Karen Marshall Soil conservation Soil conservation refers to maintaining the productivity of agricultural land by control of the erosion of soil by wind or water. Water flow gains momentum when moving over such surfaces and can then erode stream banks and lakeshores. Mulches two to three inches thick reduce soil moisture, evaporation and increase amount of soil moisture through the addition of organic matter to soil. Crops planted up and down hillsides create pathways for water to flow.
Certainly the ravages of the dust bowl, when they came, were particularly unwelcome in a land already reeling from several years of widespread unemployment and a sagging economy. Reforestation means replanting of forests at places where they have been destroyed by uncontrolled forest fires, excessive felling and lopping. Reduce Polluted Runoff In industrial farms, there are residues of chemical fertilizers, pesticides and herbicides in soil which also get carried too during erosion. Water then evaporates from the soil leaving the salt behind. Soil conservation is the preventing of soil loss from or reduced fertility caused by over usage, acidification, salinization or other chemical.
Some farmers claimed that no-till complicates weed control, delays planting and that post-harvest residues, especially for corn, are hard to manage. Contouring reduces the velocity of surface runoff by impounding water in small depressions. . Pagal Organisms In Soil Yellow fungus, a that assists in organic decay. They are grown in strips between the crops.
In broad base ridge terrace a canal is formed on the contour by exavating the mud. They also help in checking soil erosion. The uptake of nutrients by plants also depends on the pH of soil. There are several different types of water-caused erosion: sheet, rill, gully, and stream channel. For heavily eroded soil it is recommended to grown grass for many years to let the soils naturally repair themselves. When the deep rooted crops le they add humus in the soil which is future storehouse of plant nutrients. This keeps the soil from being left bare and unprotected.
It not only plays a role in how things grow, but in the air that we breathe. Windbreaks — Rows of tall trees are used in dense patterns around the farmland and prevents wind erosion. Contouring is plowing, planting, cultivating, or harvesting across the slope of the land, instead of up and down the hillside. Because soil and water are so intimately related, the program also deals with water conservation and water quality. The aim of organic farming is to attain a balanced ecological production management system that can encourage and improve soil biological activity and biodiversity. No-Till Farming There are a number of approaches used when it comes to farming. Preserve Your Dirt Any of these 10 ways to conserve soil will help protect this important natural resource and provide a solution for one of the most important environmental issues.
Examples of mulch materials include straw, wood chips, peat. Biological methods: These employ the use of plant or vegetation cover. The soil then ends up in aquatic resources bringing in pesticides and fertilizers used on agricultural land. Only about 780 acres 316 hectares of it, or little more than 1 sq. No-till farming is a relatively effective means of soil conservation and can still lead to generous crop yields.
As their name suggests, these people maintained herds of animals and also practiced basic agriculture. Crop residues also reduce wind velocity at the surface, trap eroding soil, and slow down surface and subsurface runoff of water. It involves minimum use of synthetic chemicals or inputs outside the farm while ensuring management practices that preserve, replenish, and enhance the soil and ecological stability. For example, rows of annual cultivated crops such as corn or potatoes, which have the most potential to cause erosion because of frequent plowing, are rotated with small grains such as oats that allow less erosion, and also with dense perennial grasses and legumes such as lespedeza and clover, which provide the best erosion control because the soil is not disturbed very often. The soil conservation movement has spawned a number of professional societies, including the Soil and Water Conservation Society and the World Association of Soil and Water Conservation. History of Soil Conservation Soil erosion and conservation measures to tackle it were first chronicled by ancient Romans, after which the phenomena received little attention until 1815 when the modern initiatives began in Germany.