Predicting soil water repellency using hydrophobic organic
... The water drop penetration time (WDPT) test is widely accepted and used to evaluate the extent of SWR (Van’t Woudt, 1959; Krammes and DeBano, 1965; Wessel, 1988; Dekker and Ritsema, 1994; Doerr et al., 2005). To obtain the WDPT of all oven-dried soils before extraction, the WDPT value of each soil w ...
... The water drop penetration time (WDPT) test is widely accepted and used to evaluate the extent of SWR (Van’t Woudt, 1959; Krammes and DeBano, 1965; Wessel, 1988; Dekker and Ritsema, 1994; Doerr et al., 2005). To obtain the WDPT of all oven-dried soils before extraction, the WDPT value of each soil w ...
Acid sulfate soil risk maps
... The ASS risk maps are available at http://www.dec.wa.gov.au/ass and have been specifically developed to assist developers, environmental scientists and planners in identifying areas where ASS may be present so that disturbance of ASS is avoided where possible. Where development cannot be redesigned ...
... The ASS risk maps are available at http://www.dec.wa.gov.au/ass and have been specifically developed to assist developers, environmental scientists and planners in identifying areas where ASS may be present so that disturbance of ASS is avoided where possible. Where development cannot be redesigned ...
Soil fertility basics
... manganese, molybdenum, and zinc. These elements occur in very small amounts in both soils and plants, but their role is equally as important as the primary or secondary nutrients. A deficiency of one or more of the micronutrients can lead to severe depression in growth, yield, and crop quality. Some ...
... manganese, molybdenum, and zinc. These elements occur in very small amounts in both soils and plants, but their role is equally as important as the primary or secondary nutrients. A deficiency of one or more of the micronutrients can lead to severe depression in growth, yield, and crop quality. Some ...
Revisiting agro-ecological sub-regions of India – a
... encourages soil degradation in arid to semi-arid areas dominated by Vertisols and vertic intergrades4. Rainfed cultivated area to the total cultivated area is highest in Jharkhand (91%), followed by Maharashtra (81%), Chhattisgarh (74%), Andhra Pradesh (53%) and Karnataka (71%)5. Managing natural re ...
... encourages soil degradation in arid to semi-arid areas dominated by Vertisols and vertic intergrades4. Rainfed cultivated area to the total cultivated area is highest in Jharkhand (91%), followed by Maharashtra (81%), Chhattisgarh (74%), Andhra Pradesh (53%) and Karnataka (71%)5. Managing natural re ...
Morphologic evidence of lamellae forming directly from
... concentration of clay and have the faintest color contrast from the overlying eluvial horizon. These lamellae are generally more wavy and discontinuous than those below. Lamellae in the middle zone appear to have the highest concentration of clay near the top of each lamella. In the lower part of th ...
... concentration of clay and have the faintest color contrast from the overlying eluvial horizon. These lamellae are generally more wavy and discontinuous than those below. Lamellae in the middle zone appear to have the highest concentration of clay near the top of each lamella. In the lower part of th ...
Evaluation of Alternative Causes of Widespread, Low Concentration
... levels for groundwater. Improper use (i.e., incomplete combustion or misfires) or poor housekeeping (i.e., exposure to oxygen or temperature during storage of bleach) can increase the levels of perchlorate found in the environment. Thus, it is critical that unused fireworks, flares, and explosives b ...
... levels for groundwater. Improper use (i.e., incomplete combustion or misfires) or poor housekeeping (i.e., exposure to oxygen or temperature during storage of bleach) can increase the levels of perchlorate found in the environment. Thus, it is critical that unused fireworks, flares, and explosives b ...
Nitrogen - Napa Valley College
... loss. All ammonium-containing fertilizers are volatile to some extent. Losses of up to 40% of the total nitrogen applied are possible in a very short period. Insofar as possible, the broadcasting of nitrogen fertilizer should be scheduled so that rainfall or irrigation water will immediately carry t ...
... loss. All ammonium-containing fertilizers are volatile to some extent. Losses of up to 40% of the total nitrogen applied are possible in a very short period. Insofar as possible, the broadcasting of nitrogen fertilizer should be scheduled so that rainfall or irrigation water will immediately carry t ...
9.5. Combined Methods: Electrochemical
... 9.2. Chemical Modification Methods Some of the chemical modification methods have been investigated for many years, even though the analytical aspects were not envisaged initially. The simplest technique involves the treatment with an oxidizing acid solution such as nitric acid or chromic acid. ...
... 9.2. Chemical Modification Methods Some of the chemical modification methods have been investigated for many years, even though the analytical aspects were not envisaged initially. The simplest technique involves the treatment with an oxidizing acid solution such as nitric acid or chromic acid. ...
Soil type determines how root and rhizosphere traits relate
... (Wissuwa et al. 2009). Therefore, there is a need to develop future crops with superior root traits for a better acquisition of P from soils (Lynch 2007). The acknowledged root traits enabling soil P acquisition can be classified into two main strategies: ‘foraging’ and ‘mining’. Foraging strategy i ...
... (Wissuwa et al. 2009). Therefore, there is a need to develop future crops with superior root traits for a better acquisition of P from soils (Lynch 2007). The acknowledged root traits enabling soil P acquisition can be classified into two main strategies: ‘foraging’ and ‘mining’. Foraging strategy i ...
Technical Digest - The National Lime Association
... lime companies and from other publications. ...
... lime companies and from other publications. ...
Erosion and Sediment Control - International Erosion Control
... Sediment control suitable for stormwater outlets Rock filter dams (RFD) – Type 2 sediment trap for concentrated flows Sediment weirs (SW) – Type 2 sediment trap for concentrated flows Sediment basins (SB) – Type C (dry) basins Sediment basins (SB) – Type F & D (wet) basins Sediment basin spillways ...
... Sediment control suitable for stormwater outlets Rock filter dams (RFD) – Type 2 sediment trap for concentrated flows Sediment weirs (SW) – Type 2 sediment trap for concentrated flows Sediment basins (SB) – Type C (dry) basins Sediment basins (SB) – Type F & D (wet) basins Sediment basin spillways ...
Fusarium wilt Resistance in Eight Identified Multiple Disease Resistant
... wilt causing pathogen from nursery raised ‘Pusa Madhuras’ (PM) seedlings. Pathogenicity of a pure Fusarium oxysporum f. sp. melonis isolate, the wilt causing pathogen in Cucumis melo, has been established which causes yellowing, necrosis and finally wilting under conditions of artificial inoculation ...
... wilt causing pathogen from nursery raised ‘Pusa Madhuras’ (PM) seedlings. Pathogenicity of a pure Fusarium oxysporum f. sp. melonis isolate, the wilt causing pathogen in Cucumis melo, has been established which causes yellowing, necrosis and finally wilting under conditions of artificial inoculation ...
from nerc.ac.uk
... Use of critical metal loads in assessing the risk of metal inputs Concern about the input of metals to terrestrial ecosystems is related to: (i) the ecotoxicological impact on soil organisms and plants (e.g. Bringmark et al. 1998; Palmborg et al. 1998) and also on aquatic organisms due to runoff to ...
... Use of critical metal loads in assessing the risk of metal inputs Concern about the input of metals to terrestrial ecosystems is related to: (i) the ecotoxicological impact on soil organisms and plants (e.g. Bringmark et al. 1998; Palmborg et al. 1998) and also on aquatic organisms due to runoff to ...
biological indicators of soil health
... international conferences such as the United Nations Conference on Environment and Development (UNCED) in Rio de Janeiro, Brazil in 1992; the Soil Resilience and Sustainable Land Use Symposium in Budapest, Hungary in 1992; the Sustainable Land Management Conference in Lethbridge, Canada in 1993; and ...
... international conferences such as the United Nations Conference on Environment and Development (UNCED) in Rio de Janeiro, Brazil in 1992; the Soil Resilience and Sustainable Land Use Symposium in Budapest, Hungary in 1992; the Sustainable Land Management Conference in Lethbridge, Canada in 1993; and ...
THE ROLE OF LIVING PLANT ROOTS AND CATTLE MANURE
... particularly the use of conventional methods. Therefore, the challenge is to use the potential practices to ameliorate compacted soils. The proposed investigations, which are envisaged to solve harmful effects of soil compaction on plant growth, include biological activities, achieved through appro ...
... particularly the use of conventional methods. Therefore, the challenge is to use the potential practices to ameliorate compacted soils. The proposed investigations, which are envisaged to solve harmful effects of soil compaction on plant growth, include biological activities, achieved through appro ...
Information Sheet: Clothianidin and Drinking Water (PDF)
... The most common exposure to clothianidin is through eating foods that contain small amounts of residues. The EPA has set limits on the amount of clothianidin residue allowed in various food products to reduce this exposure. Exposure can also occur through drinking water contaminated with clothianidi ...
... The most common exposure to clothianidin is through eating foods that contain small amounts of residues. The EPA has set limits on the amount of clothianidin residue allowed in various food products to reduce this exposure. Exposure can also occur through drinking water contaminated with clothianidi ...
soilcrop - Harvard University Department of Physics
... for drinking purpose while more than 90% is used for crop-irrigational requirements. The present communication deals with the source of arsenic contamination in groundwater, accumulation of the toxin in soils and crops in the affected belt of West Bengal irrigated with contaminated groundwater, and ...
... for drinking purpose while more than 90% is used for crop-irrigational requirements. The present communication deals with the source of arsenic contamination in groundwater, accumulation of the toxin in soils and crops in the affected belt of West Bengal irrigated with contaminated groundwater, and ...
Appendix 6 - Potato seed system development WA
... disease freedom, high quality seed potatoes need to be free from bruising. Bruising and mechanical damage caused during harvesting increases tuber susceptibility to breakdown and can lead to rots in storage and poor seed piece performance. The increased susceptibility to disease is due to the cut su ...
... disease freedom, high quality seed potatoes need to be free from bruising. Bruising and mechanical damage caused during harvesting increases tuber susceptibility to breakdown and can lead to rots in storage and poor seed piece performance. The increased susceptibility to disease is due to the cut su ...
Groundwater Science Relevant to the Great Lakes Water Quality
... science in the Great Lakes Basin was focused on finding drinking water. In the last several decades, however, efforts are being devoted to understanding groundwater as part of the overall water budget and ecosystems in the basin. Awareness is growing of the strong interaction between surface water a ...
... science in the Great Lakes Basin was focused on finding drinking water. In the last several decades, however, efforts are being devoted to understanding groundwater as part of the overall water budget and ecosystems in the basin. Awareness is growing of the strong interaction between surface water a ...
Land – CoastaL oCean InteraCtIons In the tropICs and subtropICs
... landscape and subsequent leaching of significant proportions of these materials into water courses, (2) the release of sewage into aquatic systems, including directly into coastal ocean waters, (3) the diversion of water flows through channelized structures and dams resulting in changes in retention ...
... landscape and subsequent leaching of significant proportions of these materials into water courses, (2) the release of sewage into aquatic systems, including directly into coastal ocean waters, (3) the diversion of water flows through channelized structures and dams resulting in changes in retention ...
Remediation of Sites with Dispersed Radioactive Contamination
... The IAEA environmental remediation project includes an IAEA Coordinated Research Project [1], as well as the participation of IAEA experts in concrete remediation projects when requested by individual Member States. The IAEA has prepared several documents dedicated to particular technical or concept ...
... The IAEA environmental remediation project includes an IAEA Coordinated Research Project [1], as well as the participation of IAEA experts in concrete remediation projects when requested by individual Member States. The IAEA has prepared several documents dedicated to particular technical or concept ...
Iron Ochre And Related Sludge Deposits In Subsurface Drain Lines1
... detected at drain outlets within the first few months after drain installation. If drains can be maintained in working order, ferrous iron reaching them may diminish over a period of time. Permanent ochre is the most serious problem because it continues to be a clogging agent for the life of the dra ...
... detected at drain outlets within the first few months after drain installation. If drains can be maintained in working order, ferrous iron reaching them may diminish over a period of time. Permanent ochre is the most serious problem because it continues to be a clogging agent for the life of the dra ...
In situ thermal remediation of DNAPL and LNAPL using electrical
... are reached in the following order: separate-phase NAPL in contact with water or soil moisture, followed by dissolved VOCs, and, finally, uncontaminated groundwater.This order is advantageous for ERH remediation, because contaminated water will tend to boil off before uncontaminated water, reducing ...
... are reached in the following order: separate-phase NAPL in contact with water or soil moisture, followed by dissolved VOCs, and, finally, uncontaminated groundwater.This order is advantageous for ERH remediation, because contaminated water will tend to boil off before uncontaminated water, reducing ...
Biochar in Agricultural Systems
... manure that has a moisture content of around 95 percent must have the solids separated from the liquids before combustion is possible. Biochar is not the same as activated carbon, which is a compound used for purifying liquids and gases due to its high absorption capacity. Biochar would need to go t ...
... manure that has a moisture content of around 95 percent must have the solids separated from the liquids before combustion is possible. Biochar is not the same as activated carbon, which is a compound used for purifying liquids and gases due to its high absorption capacity. Biochar would need to go t ...
Surface runoff
Surface runoff (also known as overland flow) is the flow of water that occurs when excess stormwater, meltwater, or other sources flows over the earth's surface. This might occur because soil is saturated to full capacity, because rain arrives more quickly than soil can absorb it, or because impervious areas (roofs and pavement) send their runoff to surrounding soil that cannot absorb all of it. Surface runoff is a major component of the water cycle. It is the primary agent in soil erosion by water.Runoff that occurs on the ground surface before reaching a channel is also called a nonpoint source. If a nonpoint source contains man-made contaminants, or natural forms of pollution (such as rotting leaves) the runoff is called nonpoint source pollution. A land area which produces runoff that drains to a common point is called a drainage basin. When runoff flows along the ground, it can pick up soil contaminants including, but not limited to petroleum, pesticides, or fertilizers that become discharge or nonpoint source pollution.In addition to causing water erosion and pollution, surface runoff in urban areas is a primary cause of urban flooding which can result in property damage, damp and mold in basements, and street flooding.