Soil

Soil Health Assessment on the Sanborn Field Long-Term Experiment Study: a review Saranya Norkaew Department of Soil, Environmental, and Atmospheric Sciences School of Natural Resources, University of Missouri-Columbia MO Introduction Degradation of soil resources is still the most serious and widespread threat to humankind. Soil has an important role to play in the global environment of food security, water security, climate stability, biodiversity, and ecosystem services (McBratney et al.,…

The purpose of this lab was to test for which soil type would be best for food production. The tests included Forest Soil, Floodplain Soil, and Garden Soil. We predicted that garden soil will have the best properties for food production because we expected it to have the highest value of nutrients for plants to grow in and a soil composition that is fit for food production (ex. Water Holding, etc). To test our hypothesis, we ran tests measuring Percent Water Content, Organic Material, Nitrates,…

CONSISTENCY LIMITS OF A SOIL 3.1 Introduction 3.1.1 Objective To determine the Atterberg Limits of Soils 3.1.2 Learning Outcomes Understand the Principle of Consistency and Atterberg Limits of Clay Soils Describe the Atterberg Limit Tests and their uses Perform the tests and obtain the Atterberg Limits Calculate some Indices (Flow Index, Plasticity Index and Toughness Index) for the Clay Soil 3.1.3 Consistency indices Fine-grained soils are formed in nature by the gradual deposition of soil…

Introduction The seven soil formation factors have created unique soils throughout Saskatchewan. Through time soil processes such as additions, losses, translocation, and transformations have continued to form soils and make different horizons. Two catena's in Saskatchewan, one in the prairie and another in the boreal forest, were examined and classified into taxonomic group. The objective was to identify, compare, and contrast the major soil formation factors, morphological features, and…

accelerated by human activities, notably those that disturb the soil or that alter or remove plant life. All building activities hold the capacity to cause excessive loss of topsoil and soil erosion generally. Environmental stewardship practices for erosion prevention reduce the threat of environmental…

of farming poor soils in Australia. https://www.youtube.com/watch?v=P4pX5W_WwU4 Australia's soils are naturally unsuitable for agriculture with most land being shallow, high in salt stores and low in nutrients. Only 6% of the land is farmland without irrigation and salt, waterlogging or acidity. 91% of Australia is covered by native flora, though native plants cover most of Australia’s desert landscapes. Australia is one of the oldest land surfaces on earth but the soils and seas are…

Soil Erodibility Factor (K) The soil erodibility factor (K), a measure of the susceptibility of soil to erosion under standard conditions, is a function of the percentage of silt and coarse sand, the soil structure, the permeability of the soil, and the percentage of organic matter. Wischmeier et al. (1971) defined the soil erodibility factor mathematically and Foster et al. (1996) converted the equation into the following SI unit equation: The soil erodibility factor (K) is determined for each…

Brown describes mass soil erosion as “a catastrophic form of natural erosion and can be produced by road construction in unstable, steep topography”, one of the most common forms of erosion in Oregon due to poorly places logging roads. Not only does clearcutting in northern parts of Oregon create compacted roads, but when these mass soil movements occur along these roads that are built to transport the wood being taken out they flow right into river systems that can greatly affect the biotic…

Modern peat soil research focus on peat soil improvement using chemical stabilization since 19th century. The stabilizer that can be used for the peat soil chemical stabilization have increased in varieties. Ordinary Portland cement and lime are two of the most common peat soil stabilizer found. However, due to the scarcity of the natural resources, substitution for the peat soil stabilization study was done in recent. In this context, few of the researches that related to the peat soil basic…

There are also some biological factors that contributes to the degradation of Nigerian soil. However, these biological factors refer to the human, animal, and plant activities that have the tendency to reduce the soil’s quality and fertility. Although the effects of biological factors are less noticeable compared to other factors. Most of the leaders in the country lack the ability to conserve and manage the land resources. Image 3 shows how the land is littered with rubbishes like biochemical…