Background information:
Dispersion of fine soil particles is controlled by a similar mechanism, dispersion is directly influenced by ions adsorbed on particle surfaces, particularly clay minerals. The presence of high sodium, especially at the low salt concentration in the soil water, causes dispersion and movement of fine particles within the pores. The particles may then become lodged in smaller pores, blocking water or air.
The effect of soil pH is great on the solubility of minerals or nutrients. Fourteen of the seventeen essential plant nutrients are obtained from the soil. Before a nutrient can be used by plants it must be dissolved in the soil solution
If the level of salt in the soil water is too high, water may flow from the plant roots back into the soil. This results in dehydration of the plant cause yield decline or even death of the plant.
Each type of soil has its characteristics in terms of water holding capacity. The first type is sand. Sand has the largest particles, with huge spaces between them, this is why sand doesn’t have the ability to hold water. Clay has the smallest particles compared to the other type, so it has good water storage qualities. It’s sticky to the touch when wet, but smooth when dry. () Clay has many fine pores, which gives it a higher capacity to hold water, than other types of soil. Eventually, it holds a higher amount of water than sand does.
Research question: How does pH and salinity affect soil types in terms of water holding capacity ?
Hypothesis :
I assume that if the water poured in the soils is not fully absorbed in the soils, then the salinity and the pH have had an
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Eventually, the salinity will be affecting both soils, as sand will lose its capacity to hold water, in contrast with Clay that will absorb more
Water that has changed throughout the hydrologic process travels from the irrigation treatment and enters into the aquifers. First...
How does the bare soil surface type affect the amount of runoff? Speculate why this happens.
In terms of agriculture, the potting soil is of equal and oftentimes greater quality and fertility
Vertisols are mainly soils that have a high content of expending clay and that have at some time of the year deep wide cracks. They shrink when drying and swell when they become wetter. Vertisols are mineral soils that have a exist in a well-balanced supply of moisture or warmer soil temperatu...
Fertilizers play a major role in increasing the yield of a crop. Both organic and inorganic fertilizers supplement a plant’s nutrient source with macronutrients such as nitrogen, phosphorus, and potassium as well as some micronutrients such as boron, copper, and chloride. These nutrients are all directly affected by the pH of the soil. Certain nutrients such as nitrogen and phosphorus can only be absorbed by a plant in a higher pH level. Nutrients such as boron and copper can only be absorbed in a lower pH level. A balanced soil will provide the optimum benefits of each nutrient (“Plant Nutrients”, n.d.).
The largest of the primary types of soil particles is sand, which ranges between 0.05 and 2 millimeters in diameter. Silt particles are smaller than sand particles, ranging between 0.002 and 0.05 millimeters in diameter. Clay particles are the smallest of all, at less than 0.002 millimeters in diameter. Soils that are more than 50 percent sand particles are considered to be "sandy soils."Soils made up of more than 80 percent sand are simply referred to as "sand." Sandy soils tend to be easier to work than clay soils, and sandy soils are well-aerated, which helps to keep plants' roots
Effect of overburden pressure. Soils of same density will give smaller count near ground surface.
Once a soil becomes hydrophobic it doesn’t always remain that way; in fact, most soils become less hydrophobic or lose their hydrophobicity with time. Both burned and unburned soils become less hydrophobic or completely lose their hydrophobicity as soil moisture increases.
The goal of this experiment was to determine the pH and salinity of the soil and to understand how the different levels of pH and salinity can affect the bacteria living within it. The ecosystem is affected by the pH of the soil.The more basic the pH level is the more bacteria that grow in the soil (Rousk et al 2009). In addition to pH, electrical conductivity also affects the nutrients and gases in the soil by calculating its salinity. Greenhouse gases, like nitrogen oxides, methane, and carbon dioxide, and nutrient availability are regulated by conductivity of the soil. When the salinity of the soil is changed, the plants need to be maintained differently because there would be more or less of the nutrients and greenhouse gases. The less saline in the soil is the less it affects the plant's growth and microbial processes (USDA -NRCS nd). The increase of salinity in the soil affects the number of fungal and bacterial species present in the soil and soil enzymes. As the salinity of the soil increases the number bacterial and fungal species decrease. The soil enzymes also experience a reduction as the soil salinity is increased (Omar et al 1993).This probably affected the microbes within the soil, which provides another explanation for the decrease in microbial species.
You may never think about the issues that could occur from a little factor such as soil permeability. Soil permeability is the amount of water or air the soil can take in. People who work in the agriculture field have to pay attention to this kind of issue when finding the right place to plant and grow their products. Soil Permeability can also play a role when making a baseball or football field. The soil has to be able to drain the water, so players can play after storms. Infiltration rates are how much water the soil can take up in an amount of time. This is also a big factor. For example, coarsely textured soils, including sand and gravel, generally have high soil permeabilities and high infiltration rates. (Rebekah Richards) Solids, like rocks, are also considered soil. The creases in between these rocks are called pores.
Hydrometer test is needed as more than 10 % of soil sample passes the 63 µ m sieve (BS 1377-2:1990). It covers the quantitative determination of the particle size distribution in a soil from coarse sand size to clay size. Particles settle under gravity during testing (Head, 1984). The results of hydrometer analysis can be referred to Appendix C1. The calibrations which used in the hydrometer analysis and water viscosity are shown in Appendix C2 and Appendix C3.
Soil structure is the size, shape and arrangement of mineral grains which form the soil mass. Soil structure is a major characteristic that influences all other engineering properties of the soil. Due to the processes of laterization, lateritic soils have attained distinct structural characteristics. It is an over-simplification to identify all temperate zone soils with dispersed structure and lateritic soils with concretionary structure (Remillon, 1967), lateritic soils may be on the whole more concretionary than most temperate zone soils.
Soil is the most important non-renewable resource on any farm. Healthy soil is key to a good
Soil is one of the most important natural resources. We use soil for everything. We use it to grow our food, we use it for fuel and we use it to build homes. It is important that we understand the soil that we build, design, work, and grow on. When we understand the soil we can work to preserve and protect it.
Plant roots absorb nutrients in order to be sustained. The mineral nutrients include nitrogen and iron when they are dissolved in water. If the soil solution is too acidic or basic, some nutrients will not dissolve easily. This means they will not be available for uptake by roots and plants will be deprived of them.