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Discuss the positive effects of tillage
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Introduction
Tillage is the mechanical modification of soil structure through many tools such as cutting, milling, crushing, beating, and rebound. Tillage is classified into two types primary and secondary tillage. Primary tillage such as plowing have a tendency to produce a rough surface finish, whereas secondary tillage tends to produce a smoother surface finish, for instance that required to make a good seedbed for many crops. Harrowing and rototilling often syndicate primary and secondary tillage into one operation. The condition or state being dependent or addicted to repeated tilling activity to overcome issues of soil for crop production is called “Tillage addiction.” Tillage results in structural degradation of soil. Soil structure
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The following are the details of tillage systems with advantages and disadvantages: plowing, chiseling, ridge-tilling, strip-tilling, and …show more content…
Some soils have exceptionally good properties which is useful for plant growth and some soils are hard to cultivate. One of the major causes of tillage addiction is soil compaction also known as tillage pan.The intensity of tillage depends on the level of soil compaction. The huge mechanical stress applied to soil by powerful machinery is also an outcome of compaction. These forces lead to the loss of soil aggregates and pore spaces.
Tillage addiction looses and aerates the top layer of soil, which facilitates planting the crop. Mechanically it destroys the weeds. It dries the soil before seeding. When autumn is done it helped exposing soil crumble over winter through frosting and defrosting which helps prepare a smooth surface for spring planting. It dries the soil before seeding. Tillage addiction causes the soil to lose a lot of nutrients like nitrogen and fertilizer and also loses its ability to store water. It decreases the water infiltration rate of soil. This results in more runoff and erosion since the soil absorbs water slower than before. Tilling the soil results in dislodging the cohesiveness of the soil particles, thereby inducing erosion. It causes chemical runoff. Tillage not only reduces organic matter in the soil but also reduces microbes, earthworms, ants, etc. It destroys soil aggregates. It also causes eutrophication, nutrient runoff into a body of
“Farming techniques such as strip cropping, terracing, crop rotation, contour plowing, and cover crops were advocated.” ("About the Dust Bowl")These new techniques were advocated in order to try and prevent more dust from getting picked up by wind and starting the dust storm again. “But for years, farmers had plowed the soil too fine, and they contributed to the creation of the Dust Bowl.”(Ganzel) This was a big mistake farmers had made. This was one of the huge factors in contributing to the Dust Bowl. This has definitely changed now. “Now, many farmers are learning how to raise crops without tilling their fields at all. (Ganzel) Farmers now not tilling their fields at all is a new farming
The nature of the Southern Plains soils and the periodic influence of drought could not be changed, but the technological abuse of the land could have been stopped. This is not to say that mechanized agriculture irreparably damaged the land-it did not. New and improved implements such as tractors, one-way disk plows, grain drills, and combines reduced plowing, planting, and harvesting costs and increased agricultural productivity. Increased productivity caused prices to fall, and farmers compensated by breaking more sod for wheat. At the same time, farmers gave little thought to using their new technology in ways to conserve the
This chapter discusses the result of experiment of soil properties at the Orthosiphon Stamineus plot, INSAT as describe in chapter three. The experimental were aimed to study the impact of compaction on soil properties at different depth for Orthosiphon Stamineus cultivation in order to determine the suitable soil classes, and propose best depth to plough the area to in order to have high yield with cost effective practice to manage the area.
The European settlers who first arrived at the Great Plains found hardy grasslands that held the fine-grained soil in place in spite of the long recurrent droughts and occasional torrential rains. A large number of the travelers settled down in this area and built farms and ranches. These land uses led to soil exposure and great erosion. The cattle ranches were very profitable for the settlers; unfortunately, this led to overgrazing and degradation of the soil. In addition, farmers began to plow the natural grass cover and plant their own crops. Without the original root systems of the grass to anchor the soil, much of it blew away. The wide row crops were very disastrous because between the crops, the land was kept bare; as a result, this area was exposed to the elements. Also, the nutrients in the soil were used up by the plants faster than they could be replaced. The soil had become exhausted.
The reason farmers have concerned about high residue or No till is because the water holding capacity and soil moisture. In the cold spring season if soil moisture is high, it can delay the growth of the crop. Corn gets delayed the most since corn is planted very early in the year. With
Plowing is when a machine is drawn and used to cut soil, then is repeatedly turned over. The purpose of plowing was to give farmers the fresh nutrients at the surface, but bury weeds at the same time. What this did was push previous crops below the surface, once they are deep in the ground they would break down and allow new fields to be opened. Deep plowing was not effectively used by farmers. In the 1930s, farmers believed in the myth "rain follows the plow." With expectations of rainfall in the future, farmers kept plowing and sowing wheat. They plowed up to five million acres of land attempting to make profit. But for many years, the farmers plowed the soil too fine. With the wheat market flooded and reduced prices, people were too poor to buy. With people being too poor farmers did not receive their financial gain. Following the market farmers were convinced that if they tear up more grassland they could break even. Although, the over plowing of the land for wheat reduced the agricultural value of the
One way no-till can prove an advantage is that it conserves moisture in the soil. By not turning up the soil, more moisture remains underneath, allowing crops to hold a supply of water during dry periods of little or no rain. Since more water remains in the ground, it benefits the crops because in hot months like July when there is little rain, crops need water, and no-till helps to supply that water. Crops like corn pollinate in July when it is the hottest and the driest, and a little extra water in the soil never hurts. During dry spells while conventional farmer’s crops burn up, crops that were no-tilled have extra water to drink and can often survive through these dry periods. Since stubble and trash remains behind to shade the ground, the earth remains unexposed to the sun and is less vulnerable to evaporation. As one no-till farmer, Darnell Poage says, “The cover on the field holds the moisture in from the sun and wind.” Because the sun is not shining directly on the groun...
Not only can clear-cutting can lead to deforestation, but can lead to soil erosion, as plants act as a barrier to slow down water as it runs off the land. The root fix the soil, and prevents it from washing away, the absence of vegetation causes the topsoil to erode more quickly, allowing difficulty for plants to grow in a less nutrition soil quality.
The following is an analysis of Herb Field’s editorial titled “Saving Farmland.” The author’s purpose was to inform the reader about Pennsylvania’s program on preserving farmland. His thesis is clearly stated, although it doesn't appear until the third paragraph: “Pennsylvania has the best, most ambitious farm preservation program going, a model for the country.” The author is also trying to persuade the reader that Pennsylvania, even with it’s many problems, does rather well at preserving farmland. In fact, the author further states that, “Pennsylvania is to receive the largest annual allocation of federal farm preservation funds ever made -- $3.9 million.” Despite this seemingly uninspiring subject, Fields communicates well with his readers
Farming has changed a lot over time, new technology has been invented, more food can now be produced, and more farms have opened. Most of the new technology that has been invented for farming was made to make farming faster. In the 18th century horses and oxen were used for power, hay and grain cutting was done with a sickle, cultivating by hoe threshing was done with a flail, ("Spielmaker"). A lot also happened in the 17th century; The scythe and cradle was introduced, the invention of cotton gin in 1793, Thomas Jefferson's plow with a moldboard with the least resistance tested (1794) ("Spielmaker"). A very common fertilization technique in the middle age was called "marling". The technique Marling is when a farmer would spread clay which contained lime carbonate on to their soil. This process restored the nutrients needed to grow crops. Some farmers also used manure as a fertilizer which they got from livestock they raised ("Newman"). Farmers had a spring and a fall crop....
Due to many benefits of this practice, no-till farming should become the most common farming practice all around the country. To even begin to describe the benefits of no-till it would first be beneficial to know exactly what no-till is and, where it came from. After the basics of this practice are understood it will make more sense when it is explained how it will impact the earth, what physical changes one will see on the ground that is no tilled along with how the farmer’s equipment handles it, and finally you will see that financially you are better off no tilling all of your ground rather than the “old style” tilling it.
Soil is the most important non-renewable resource on any farm. Healthy soil is key to a good
An efficient system of rotational grazing allows the farmers achieve this. There are various systems available including Paddock Grazing, Strip Grazing, Block Grazing, Set Stocking, Creep Feeding, leader follower system, Zero grazing and Mixed Grazing.
As a result of this process, the mine sites "do not develop normal soil structure or support the establishment of a plant cover". Many mine sites have...
It will lead to a reduction in crop yields. There will also be irreparable damage to forests and wildlife. Being corrosive, it can cause extensive damage to buildings. Skin problems, hair loss heart and respiratory problems can also be aggravated by it. Furthermore, organic farming can also prevent climatic changes as agriculture can trap carbon and thus reducing the carbon emissions in the atmosphere.