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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
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
As we have observed throughout the centuries, colonialism has immensely shaped the majority of countries of modern society. In the essay “The Impact of Colonization and Western Assimilation on Health and Wellbeing of Canadian Aboriginal People”, Cathy MacDonald & Audrey Steenbeek developed significant points that reflect as connections to the essay “Virgin Soils Revisited” emphasizing the devastating impact colonialism has had on the wellbeing and health initiatives imposed on the Native Americans and the Aboriginal people of Canada to this day. Both indigenous populations have endured the hardships of poor health, racial issues such as oppression, and cultural assimilations due to the long-lasting effects of colonialism.
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
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
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.
“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
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.
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....
Every day, thousands of babies are being born all around the earth, meanwhile our homeland earth is running out of enough space for living, farming and running out of clean drinkable water; Millions of people are desperate for any job opportunities. ’’ By the year 2050, nearly 80% of the earth’s population will reside in urban centers’’ . It is estimated that the population of the earth will increase by about 3 billion people by that time and 80% percent of the usable lands for raising crops will be in use . Vertical farming is one the ideas to move forward towards a healthier and more manageable future for all the human, as well as wildlife and our environment. “Ecologist Dickson Despommier argues that vertical farming is legitimate
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 exact definition of no-till farming is defined as “farming where the soil is left undisturbed from the time you harvest until you go to plant again the next season”, according to the HRWC website. No-till relies on all natural processes to break down residue from the previous years crop. Residue is all of the crop that is left after the actual crop is harvested. Residue can be a difficult thing to deal with when planting but with technology on the rise people have invented new styles of planters and attachments that can handle the residue economically. For all of the knowledge that this practice holds, somebody had to be very dedicated to get this system of farming out into the world. The studies had to start somewhere with all of the no-till farming that is going on today all around the world. The first person to really understand and study this type of farming was a man named Rolf Derpsch. Rolf was born in Chile in 1937, he then studied agronomy at the University of Chile in Santiago where he learned the value of the soil and the need to keep it safe and healthy. After those studies got out into the ...
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...
Soil is the most important non-renewable resource on any farm. Healthy soil is key to a good
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.