Controlled mineralizing acetaldehyde condensation urea (CM ...
Abstract To reduce nitrogen (N) loss from vegetable fields with minimum labor, the effects of a single application of different types of controlled mineralizing acetaldehyde condensation urea (CM-CDU) fertilizer on crop yield and N uptake, nitrate leaching from the surface soil (0–20 cm) and N2O emission from the soil after two continuous croppings of a leafy vegetable (na, Brassica ...
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Trinity AgTech | LinkedIn
Dr Milad Toolabi, Trinity AgTech's Director of AI-ML Advanced Analytics, was one of the co-developers of the module which utilises two metrics, nitrate leaching and nitrogen uptake efficiency, to increase understanding and assessment of leaching at farm, crop and field level. "By bringing historic information in alongside real-time data ...
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Impacts of fertigation via sprinkler irrigation on nitrate ...
Abstract A study was conducted in an acid–sulphate soil in the central region of Thailand, in 1999, and 2000 to assess the influence of different rates of N fertigation on corn ( Zea mays L.) yield and nitrate leaching. Nitrogen source was urea and there were four N fertigation treatments which include 0 (control), 100, 150 and 200 kg N ha −1, each having three replications arranged in a ...
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Fortis™ Protect - Orica
Fortis™ Protect is a premium bulk explosive product specifically designed for use in the most arduous wet blast hole applications, such as dynamic water or when the minimisation of the risk of nitrate leaching is required. The product uses a combination of advanced surface chemistry in combination with increased viscosity to significantly ...
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Fertilizer Industry Handbook 2018 - Yara International
Nitrate leaching occurs when the soil is saturated with water and nitrate is washed below the root zone by percolating rainfall or irrigation. Nitrate leaching is independent from the source of nitrogen, it can be caused by mineral fertilizer, organic manure or even soil organic matter. Most loss of nitrate to water occurs during winter.
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Nitrogen leaching from soil treated with sludge
Average nitrogen leach in the form of NO3- was 25 times more concentrated than the NH4+. Nitrate concentrations in the leachate exceeded the drinking water standard. Nitrate and ammonium leaching were measured to be between 1.50-3.00% and 0.03-0.14% of the total treated nitrogen, respectively.
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NITRATE | meaning in the Cambridge English Dictionary
nitrate definition: 1. a chemical that includes nitrogen and oxygen, often used as a fertilizer (= a substance that…. Learn more.
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Use of tensiometer for in situ measurement of nitrate leaching
Abstract. In order to monitor nitrate leaching from non-point source pollution, this study used tensiometers to measure in situ nitrate concentration and soil-moisture potential. Instead of filling the tensiometers with pure water, the study filled the tensiometers with nitrate ionic strength adjuster (ISA, 1 M (NH {sub 4}) {sub 2}SO {sub 4}).
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Ammonium Nitrate : Manufacturers, Suppliers, Wholesalers ...
Ammonium nitrate prilled porous (ppan) for fireworks Trade standard Purity (ammonium nitrate- dry basis) 99.5% min Moisture (free water content) 0.3% max Oil absorptive(oil absorbency) 7% min Density g/cm3 0.76-0.83g/cm3 Size : 0.5-2.5mm (granularity)90% min 10% ammonium nitrate aqueous solution ph value 4.0min Packing 25 kg bags Chemical compound / molecular formula nh4no3 Cas number …
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CARIUMA : Factories | Cariuma
This cotton is grown with regenerative methods, without harmful pesticides or fertilizers, and directly combats heavy soil erosion and nitrate leaching (both characteristic of conventional farming). Organic cotton also means farmers, agricultural workers, and anyone involved in the manufacturing process of our sustainable sneakers are safe from ...
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Nitrate Leaching - FAR
Nitrate Leaching Nitrate leaching is a naturally occurring process, it occurs when nitrate leaves the soil in drainage water. Nitrate is soluble and mobile. It is no problem when it is within the root-zone, but once it gets into the ground water and other fresh water bodies it is an environmental pollutant.
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(PDF) Application of PESTFADE to Simulate Nitrate …
Simulate Nitrate Leaching in a Fertigated Corn Field in Thailand, Canadian Water R esources Journal / Revue canadienne des ressources hydriques, 27:1, 1-24, DOI: 10.4296/cwrj2701001
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Nitrate Leaching by Charles Butler | eBay
In addition he has plans on how to build your own Pachuca tank as well as order a video on the entire processes. The wholesale direct from the manufacturer list …
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Geostatistical Assessment of Subsurface Heterogeneity and ...
The studying area is located in Suphanburi province of Thailand. This area has been identified with nitrate contamination in groundwater aquifer underneath. Attempts to spatially estimate nitrate concentration profile in soil and groundwater by employing deterministic recharge rate from an empirical relationship between infiltration rate and ...
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A critical review of the impacts of cover crops on ...
Nitrogen leaching from agricultural soils is of great concern due to its contribution to excess nitrate (NO 3) concentrations in ground water and run‐off (Ascott et al., 2017), indirect emissions of greenhouse gases (GHGs), for example, nitrous oxide (N 2 O) (Delgado et al., 2008), and loss of expensive N fertilizer (Cardenas et al., 2011).
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HydroMetrics | LinkedIn
Nitrate contamination of groundwater, and drinking water, is increasingly becoming an issue worldwide due to the overuse of fertilisers and subsequent leaching. This issue is prevalent in areas of ...
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Hydrotalcite: leaching-retarded fertilizers for sandy soils
Sandy soils of Northeast Thailand are predisposed to high acidification rates due to leaching and the export of alkalinity is associated with crop removal in these intensive cropping systems. Despite significant acid release, soil pH generally remains stable at a threshold value of around 4.0. ... nitrate…
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Impacts of fertigation via sprinkler irrigation on nitrate ...
Impacts of fertigation via sprinkler irrigation on nitrate leaching and corn yield in an acid–sulphate soil in Thailand February 2002 Agricultural Water Management 52(3):197-213
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GIS-based and laboratory-scaled leaching assessment of ...
12%A series of column experiments were also conducted to explore the leaching characteristics of nitrate from contaminated soil samples collected from the study area in Suphanburi province of Thailand. Because S2, S3, and S8 were nitrate-free samples, they were sieved and employed only in a series of nitrate column transport experiments. Nitrate ...
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Agriculture, Ecosystems & Environment | Agro-contaminants ...
Relationships between agroecosystems and the natural environment, particularly impact on water quality is a burning worldwide issue. Pollution generated in agroecosystems is primarily transferred to the natural environment through waterways. Identification of pollutant sources and load dynamics at the catchment scale is thus crucial for evaluating and predicting human and …
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Water Quality Fact Sheet: Nitrate
Nitrate fertiliser application (kg/ha/year) 1 7 4 6 3 5 2 The nitrate concentration in groundwater is normally low but can reach very high levels as a result of leaching or runoff from agricultural land together with contamination from human or animal wastes, (Laftouhi et al. 2003). Sources of nitrate pollution in groundwater Agriculture
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Estimation of the Effect of Soil Texture on Nitrate ...
The use of chemical fertilizers in Thailand increased exponentially by more than 100-fold from 1961 to 2004. Intensification of agricultural production causes several potential risks to water supplies, especially nitrate-nitrogen (NO3−-N) pollution. Nitrate is considered a potential pollutant because its excess application can move into streams by runoff and into groundwater by leaching.
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Archive - California Agriculture
The E-G model (Pang and Letey 1998) was developed to simulate (1) water, salt and nitrate movement through soil with a growing plant; (2) plant response to stresses associated with matric water potential, salinity and N deficiency; (3) water, salt and nitrate leaching below the root zone; (4) cumulative relative transpiration and N uptake and ...
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Evaluation of CERES-Maize of DSSAT model to simulate ...
The CERES-Maize of DSSAT v3.5 model was used to simulate nitrate leaching, nitrogen uptake, corn yield and soil moisture content in an acid sulphate soil in the central region of Thailand. The validation data was obtained from a two-year study with conventional tilled corn (Zea mays L.) …
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MOVEMENT OF NITRATE, CHLORIDE, AND
Since chloride and nitrate are transported in similar ways by mois-ture, this method, using chloride as a tracer for nitrate, permits bet-ter evaluation of the nitrate movement. Leaching can be followed by repeatedly measuring the chloride content in the different layers of the soil profile. Treatment 2, which received 405 kg/ha of chloride
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Identifying the sources of nitrate contamination using a ...
NH 4 + concentrations in middle Mun and lower Mun in wet season were significantly higher than NO 3-, suggesting enhanced runoff processes by flood promote agricultural fertilized NH 4 + leaching into the river. Higher Cl-concentration and NO 3-/Cl-indicated that manure and sewage was the dominate nitrate source in the Lam Takhong River and the ...
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nitrate leaching – Advanced BioFuels USA
Tag "nitrate leaching" Back To Homepage. Working the Calculator: The Digest's 2016 Multi-Slide Guide to Choosing a Feedstock ... technology transfer tech transfer telephone utility poles Tennessee termites terpenes terrestrial carbon testing Texas textbook Thailand theft therapeutics Thermal catalytic depolymerization (TCD) ...
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Nitrate Accumulation and Leaching in Surface and Ground ...
Nitrate is both soluble and mobile, it is prone to leaching through soil with infiltrating water, and it can persist in shallow groundwater for years [ 32 ]. Moreover, the hydrogeological settings, seasonal trends and anthropogenic activities are major factors that influence the mobility and accumulation of nitrates [ 33 ].
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Dicyandiamide - The Chemical Company
Dicyandiamde (DICY) is a strongly alkaline and water-soluble white crystalline compound with the scientific name of cyanoguanidine. The chemical is the dimer of cyanamide or cyanoguanidine, which is mainly used in the production of melamine. DICY is also used as a curing agent for epoxy resins and laminates for circuit boards, powder coatings and adhesives. Cyanamide, the amide of normal ...
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Nitrogen Reducing Technologies for Onsite Wastewater ...
Nitrate in particular, because of its mobility in groundwater, is the form of nitrogen that is the primary focus of nitrogen removal technology. The Nitrogen Cycle (see . Figure 1 in Appendix A) illustrates the interrelationship of the environment and nitrogen products. The …
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Beef + Lamb New Zealand | LinkedIn
Dr Robyn Dynes is a farm system scientist at AgResearch, the podcast discusses certain elements of farm systems and what progress is being made in the reduction of nitrate leaching on farms, and importantly how farmers can meet the targets that are being set for them - and doing this while keeping their businesses healthy.
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Water use and soil nitrate nitrogen changes under ...
Impacts of fertigation via sprinkler irrigation on nitrate leaching and corn yield in an acid–sulphate soil in Thailand Agric. Water Manage., 52 ( 2002 ), pp. 197 - 213 Article Download PDF View Record in Scopus Google Scholar
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Fertilizer Industry Handbook 2018 - Yara International
nitrate leaching . Supply of N fertilizer to the crop 11 . Choosing the right nitrogen fertilizer to avoid ammonia volatilization losses . 0.7 . 1.8 . 3 10.8 . 19.9 CN. CAN. AN. UAN. Urea. Ammonia volatilization in % NH3- N per unit N applied : Reference: EMEP/EEA emission inventory guidebook 2013 ...
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