Soil classification

The use of biochar on a widespread and large-scale has thus been shown to be greatly beneficial in the fight against climate change, as well as for sustainable soil management. But before this can be seriously implemented and developed into policy, scientific evidence must be expanded to fully cover implication of its use on soil properties, processes and functions (Verheijen et al 2012). Until this has been comprehensively quantified, regulations have a higher likelihood of unsuccessfully…

1.Soil forming factors 1) Climate- The climate of the Pullman series leans on the side of ustic and is in fact a Paleustoll, but can boarder on aridic at times. Ustic is an intermediate between udic and aridic with the winters being relatively dry, and the growing season is characterized by plant available moisture between significant periods of drought. The Pullman series meets this descriptions, in that it’s driest periods lie between July and August, and then December through February, with…

prevalent among wetlands. Wetlands are a complicated part of the ecosystem and come in a multitude of different forms. Swamps for example are dominated by woody species, and have two more specific classifications, shrub or forested. Other wetland types include bogs which are characterized by the spongy soil and low nutrient levels or fens which are similar to bogs but less acidic and more nutrient rich (Wetlands). These wetlands add to…

cohesive soils. There are many factors linked to the existence of quicksand. Holtz, Kovacs, and Sheahan describe how the seepage forces, liquefaction, earthquakes, soil stress and underground water table are crucial elements to the understanding of quicksand. Additionally, the book provides practical methods to understand liquefaction and how it has affected engineering structures around the world. “If the seepage forces are large enough, the effective stress can go to zero and the soil becomes…

Introduction: Soil samples where collected to test at Green River College, King County Washington, Sec 16 T21N R05E, W.M. in the gator pond retention area. Testing was done every half chain, for a distance of 528 feet to the north/south, 16 lines. Plots to the east/west where done until the water no longer flowed into the water shed. Data collected included, amounts of sand silt and clay, the amount of gravel, and dominate and co-dominate species in a 4 foot radius and the density of each plot.…

DROUGHT ADAPTATIONS IN KENYA INTRODUCTION The Lancet commission on Health and Climate change June 2015 list four direct effect of climate change; ’Increase heat stress, floods, drought and increased frequency of intense storms”( The Lancet, 2015). Who. int (2015) describes drought as a period in the climate cycle caused by lack of rainfall that result in lack of water that then leads to food shortages. The populations mostly affected by this climate induced disaster are; people of low social…

Within recent decades, there has been an experience in the decrease of the soil health and fertility around the world. There are many causes to this, which will be explained later on into this essay. This is a problem that needs to have more focus put on it because soil health and fertility is arguably the basis for all of our foods and without having healthy and fertile soil, there will be a decrease in the amount of crops produced. But not only is the amount of crops produced affected, the…

Soil erosion is one of the most serious threats in our world. Humans cause 40% of soil erosion. Soil erosion is topsoil, which is organic soil made up with rich nutrients. Erosion can be caused by careless farming techniques that lead to water erosion. When it is raining and you are walking to class you can see soil erosion where they have been working beside the English building. Soil erosion and water erosion is practically the same thing. No one will ever notice soil erosion because nobody…

utilized agricultural, animal and human residue as fertilizer (Howard, 1943, Food and Agriculture Organization, 1978). Many of these residues either were placed in pits or placed in heaps and allowed to rot for long period of time for the production of soil amendment. The first waste pits made out of stone and built outside the houses were found in Sumerian cities about 6000 years ago (Uhlig, H. 1976). India is characterized by a mosaic of distinct agro-ecosystem conditioned by its geological…

Plant Science - Seed germination and growth The research question: What is the effect of changing the pH of the soil on the germination and growth of mustard peas? Hypothesis: The greatest number of peas will germinate and will grow the most when the pH is 5 or 7. Theory: Enzymes play a vital role in the cells of plants (especially when growing) and enzymes work best when at their optimum pH value. Moreover, all chemical reactions have an optimum pH at which they work best (Howard and…