Soil improvers

anionic polyacrylamide (PAM) has been commonly used as a soil conditioner to reduce erosion by clay flocculation and binding particles and stabilizing the outer aggregate surfaces. Moreover, PAM is highly resistant to microbial degradation, with a decomposition rate of ∼10% yr-1, which has led to its efficient use as a soil conditioner for long periods. Wu et al. (2012) revealed that PAM showed a minor effect on 14C allocation in plant parts and soil in a short-term 14C labeling study. Except the observations

Syndrome and Population Densities of Heterodera Glycines in Naturally Infested Soil; there was 2.4 million tonnes of soybean loss in 2005 due to SDS (One tonnes is equivalent to 1.1 U.S. tons.). Sudden Death Syndrome is caused by two main pathogens, the fungus, Fusarium virguliforme, and the soybean cyst nematode, Heterodera glycines. Sometimes symptoms are confined to certain strips in the field. This may be due to soil structure and if there has been any previous infection of SDS in that field from

and slope gradient influence the soil properties. This is a topic of great interest amongst geographers and Geologists alike, as slight changes within soil structures, characterisation, and soil composition will alter the soil system and its stability. The study of Relief in regards to soils is key in soil study as it will have the most outstanding impact on changes in landscapes and may potentially have detrimental impacts in societies; from an economic view of soil fertility and crop harvesting,

Introduction The first question to be addressed in this study is, will there be varying tree seedling species diversity in relation to varying levels of burn severity? My hypothesis for this question is that we will see the highest tree species diversity where we see a moderate level of burn severity. The second question of the study asks, did the presence of salvage logging lead to a difference in the tree seedling densities as compared to unlogged sites? My hypothesis for this question is that

The decomposition of soil organic matter (SOM), or plant litter, by soil organisms, influences soil chemistry and its physical properties. The breakdown rate of SOM affects plant nutrient availability, the moisture holding capacity of soils, soil structure and the biological activity of soil organisms.01 According to the Food and Agriculture Organization of the United Nations (FAO), these microorganisms carry out processes that are essential for soil health and biodiversity, performing vital functions

of the African continent people are quick to overlook the important role that soil has played in the development of cultures and civilizations in Africa because it can be so easily overshadowed by Africa’s other geographic features such as its rivers, mountains, deserts and grasslands. However, to ignore soil is undoubtedly a mistake because “African soils cannot be separated from African history” (Showers 118). Soils are literally the foundation of life, used for farming, building houses, making

lovely garden that would produce enough vegetables to feed us through what Californians refer to as winter. Being the submissive wife that I was, I asked Ken what I needed to do first. He borrowed a tiller (whatever that is) and began to prepare the soil for seeding. All the weeds were cleared away, so that nothing was left but beautiful rich, brown dirt. Then he made these little indentations, called furrows, down through the freshly plowed dirt and smoothed it all out to perfection. Then I had

area [Mitra et al., 2005]. Wetlands, as ecotones between terrestrial and aquatic systems, have many unique features that set them apart from other natural ecosystems, including the presence of standing water for extended periods of time, particular soil

practices can results erosion and sedimentation within the Upper Wabash River Watershed. When erosion occurs sediment is carried into the water causing sedimentation. The water becomes cloudy due to sedimentation when the soil particles suspend within the water column. The soil particles can also clough

community to contaminants in response to their public health complaint with the City of New Orleans. . The homeowners in the neighborhood started to complain of nausea, headache, and dyspnea when they work in their back yards and reported water runoff and soil erosion from the waste management site. So, they were really concerned about their children health because they used to play in the area. As a result of that, we evaluated some polycyclic aromatic hydrocarbons. Polycyclic aromatic hydrocarbons (PAHs)