Soil Conservation

“Erosion occurs when the soil lacks protective vegetative cover”. (Pimentel, Kounang, 1998) “Soil erosion reduces the productivity of the land by loss of water, soil, organic matter, nutrients, biota, and depth of soil.” (Pimentel, Kounang, 1998) With no conservation methods in place in certain places like: no contour farming, no cover crop, no terraces, no water ways, and tillage on steep hills is asking for a loss of productivity from the land. The effects on the land that non-conservation methods have is horrible. “Its effects are pervasive, and its damages are long lasting. (Pimentel and others 1995a)” (Pimentel, Kounang, 1998) Soil loss is a bigger factor then most people think. For an example an comparison of how much soil is actually lost in certain environments: “On sloping agricultural land under tropical rainfall, as much as 400t/ha/yr of soil is lost (Pimentel unpublished report,1990).”(Pimentel, Kounang, 1998) “Under arid conditions with relatively strong winds, as much as 5600t/ha/yr of soil has been reported lost (Gupta and Raina 1996).” (Pimentel, Kounang, 1998) Soil loss is a huge factor when conservation practices are not put into place. “According to some investigators, approximately 75 billion tons a fertile soil are lost annually from the world’s agricultural systems (Myers 1993).” (Pimentel, Kounang, 1998) Soil loss is a huge factor and many different things can be done to help slow it,

Poor soil management can lead to biological, chemical, and physical degradation, which can in turn negatively alter the activity of

7 The concept of the soil conservation way to limit the plowing, and to stop the tractors to pick up and release dust into the sky If the act was not put into place the land would continue to get worse, but only until the sky came.

Soil organisms provide ecosystem services such as maintaining soil fertility and preventing soil erosion. Water, wind, ice, and other agents cause soil erosion, the wearing away or removal of soil from the land. Soil erosion reduces fertility because essential minerals and organic matter are removed. Erosion causes sediments and pesticide and fertilizer residues to pollute nearby waterways ( Wiley, 2009).

They play a key role in regenerating and displacing soil. Earthworm activities changes both physical and chemical characteristic of soil. They help convert organic matter to humus. Additionally, they ingest other particles (sand grains) and when it is digested and excreted, it is accessible for plants to take advantage of its minerals and nutrients. Physically, the earthworm creates tunnels for air and water to navigate the soil. () They play an essential role in fighting erosion and are vital to plant growth. Healthy soil is depended on a thriving worm population. The ability to break down organic matter and excrete nutrients makes the earthworm valuable to restoration projects. Some people have employed earthworms to prepare soil for the return of native flora. Individuals that utilized this idea have seen better results in the return of their soil ecosystem than previously used methods. The number of

Look around you; do you think that we need soil in our everyday lives? Sure we do. Natural flowing water is filtered through the soil thus making it drinkable. We breathe the air that is produced by plants that grow in soil. Our clothes wouldn’t be made if the cotton plant had no soil to grow in.

Franklin D Roosevelt once said, “the history of every Nation is eventually written in the way in which it cares for its soil.” The United States began seeing sustainable management practices in farms, and healthier soil through this act. In 1982 through 2007, the United States soil erosion had declined by 43%” (Montanarella, 2015). Every year the United States loses about $400 billion dollars due to crop soil that is eroded. Soil is a limited resource and the largest resource for growing food, accommodating diverse ecosystems, and providing food resources. Therefore laws, acts, and provisions are necessary to protect this natural resource.

Soil is the word that literally holds this world together. Without the necessity of soil, we probably wouldn’t even be where we are today. It is the main support system for our earth because it holds the roots to the ground, keeping our ground in tact. When we can’t control what happens in nature, like the Dust Bowl, we may be hit with unexpected dangers, but when it comes to things we can control we need to act right away. In the 1930’s, with little to no rainfall, weak soil and no advanced technology the people in the great plains were headed for a major catastrophe. They had no control over the way their land was moving, so it just kept going and eventually ended up to be known around the world as the Dust Bowl. If they would have had the

Soils provide a habitat for a wide range of organisms (ranging from macro-organisms; such as mice to micro-organisms; bacteria and fungi).

No-till farming limits the amount of anthropogenic involvement, which can contribute to the degradation soil by exposing the upper soil horizon, re-introducing noxious weeds to germination, allowing for leeching and erosion of topsoil which is already in short demand. This paper discusses the benefits of no-till farming with comparisons and studies that suggest the benefits of the no-till system. This paper takes an in depth look at the history of tillage, as well as the topics of nutrients, mulch and stabilization, habitat, aggregation and aeration, and the nutrient cycle. Although in some cases tillage may have similar results when compared to the no-till system, implementation of the right cover crop on a given soil reduces evaporation, limits water and nutrient leeching, builds or enhances the soil ecosystem which has the potential to promote better plant nutrient absorption.

Soil is the most important element for agricultural ecosystems. Healthy soil comes with beneficial microbes and insects. Unfortunately, these are often killed off by the abuse of pesticides. Healthy soil can produce strong crops that are less vulnerable to pests. Damaged soils often need strong fertilizers application to produce a high amount of crops. Soil quality can be amplified in many ways, including leaving crop remainders in the field after harvest and adding composted plant material (Union of Concerned Scientists) Compared to industrial agriculture, companies continue to damage and consume natural soil. While intensive plowing and monocrop (does not rotate) agriculture systems have caused nutrient exhaustion and soil erosion. Excessive application of fertilizers and pesticides has contaminated soils and polluted waterways (Grace Communications Foundations)

According to the European Union’s Joint Research Center, soil contains nearly one third of all living organisms, but only about one percent have been identified. Another study in 2003 featured in the journal Ecosystems estimated that 5% of the United State’s soil biodiversity was “in danger of substantial loss, or complete extinction, due to agriculture and urbanization.” (Robbins) The damage comes from multiple sources. Paving or building over soil effectively blocks out the air, water, and light needed to have a functioning soil biome meaning that roads, cities, sidewalks, houses, and businesses have destroyed the soil beneath it. Agricultural practices remove organic material, decreasing food, and then allows fallowed land to become dry and exposed to the elements. Household, industrial, and agricultural toxins can also sterilize soil if not disposed of

The documentary Sustainable is about farmers and others discussing the history leading to the sustainable food movement and how it could change what we eat in the future. It is saying that sustainability is the idea that we can continue to live on limited resources. Not using more resources than we can replenish. In the film David Montgomery the author of dirt: the erosion of civilizations starts off by saying that soil is taken for granted. He says it’s the most undervalued yet invaluable resource humanity has. That it is the foundation for terrestrial life and agriculture. Soil has been treated like dirt. An estimated of 6.9 million tons of soil is lost every year in the United States due to erosion.

Erosion removes the surface soils, containing most of the organic matter, plant nutrients, and fine soil particles, which help to retain water and nutrients in the root zone where they are available to plants. Thus it affects the productivity of plants. The remaining, the subsoil, tends to be less fertile, less absorbent and less able to retain pesticides, fertilizers, and other plant nutrients. There are over 17,000 soil types recognized worldwide. They vary widely in structure, erodibility, fertility, and ability to produce crops. A generalized soil profile for a humid, temperate climate is showed. When the natural vegetation is cleared for agriculture, soils become exposed to erosion and loss of soil fertility. The removal of the above-ground natural

Significantly, desertification also cause soil erosion, which means soil surface is worn by wind and water. Desertification makes soil easy to erode by water or wind, as soil is exposed and soil structure is instable without forest. LaI R(2003) says that ““Land area globally affected by erosion is 1094 million ha (Mha) by water erosion, of which 751 Mha is severely affected, and 549 Mha by wind erosion, of which 296 Mha is severely affected.” To control soil erosion, an obvious way is virescence, enlarging forest cover, which can protect the soil far from exposing to strong wind. Also, the roots of plants under ground play a role as a framework, as they are obstructions to soil movement,