nitrate leaching thailand

nitrate leaching thailand

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.

More

GIS-based and laboratory-scaled leaching assessment of ...

Sep 30, 2014  高达10%返现  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 ...

More

(PDF) Application of PESTFADE to Simulate Nitrate Leaching ...

Mar 01, 2002  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

More

Application of PESTFADE to Simulate Nitrate Leaching in a ...

Jan 23, 2013  (2002). Application of PESTFADE to Simulate Nitrate Leaching in a Fertigated Corn Field in Thailand. Canadian Water Resources Journal / Revue

More

Nitrates in drinking water Philippines and Thailand

nitrates levels above the World Heath Organization safety limit of 50 mg l-1 of nitrate (NO3-). This nitrate pollution was highest in the most intensive crops, with nitrate levels 3 times the WHO safety limit (>150 mg l-1) in asparagus farms in Kanchanaburi, Thailand. Groundwater wells in vegetable farming areas in Benguet, the ‘salad bowl’ of

More

Acidification and buffering mechanisms of tropical sandy ...

Jan 01, 2017  Nitrate leaching increased after saturation of sandy soil in northeast Thailand. • Crop tree plantation limits nitrate leaching from soil due to N assimilation. • Acidification of sandy soil was accelerated by product removal in cropland. • Net mineralization of native soil organic matter can neutralize most of the acidity. •

More

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.

More

Nitrogen in the Environment: Leaching MU Extension

Nitrate leaching can have a direct impact on water quality. Nitrate is very mobile and easily leaches with water. Heavy rains can cause nitrates to leach downward in the soil below the root zone. Whether nitrates continue to leach downward, and into groundwater, depends on underlying soil and/or bedrock conditions, as well as depth to groundwater.

More

Nitrates in drinking water Philippines and Thailand

nitrates levels above the World Heath Organization safety limit of 50 mg l-1 of nitrate (NO3-). This nitrate pollution was highest in the most intensive crops, with nitrate levels 3 times the WHO safety limit (>150 mg l-1) in asparagus farms in Kanchanaburi, Thailand. Groundwater wells in vegetable farming areas in Benguet, the ‘salad bowl’ of

More

CiteSeerX — Monitoring of Nitrogen Leaching from a ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A study on monitoring of nitrogen (N) leaching was conducted in acid- sulfate clayey soil in the central region of Thailand. The objective was to measure the N leaching to shallow groundwater from a tropical paddy field to assess the consequences of agricultural management practices.

More

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 ...

More

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

More

Identifying the sources of nitrate contamination using a ...

Environmental issues triggered by increasing nitrate in agricultural river has become global concern. Identifying nitrate sources and transformation are crucial for water sources protection and eliminating nitrate contamination in an agricultural watershed. In this study, chemical and dual isotopic

More

Use of tensiometer for in situ measurement of nitrate leaching

Jul 01, 1999  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}).

More

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 ...

More

Estimation of the Effect of Soil Texture on Nitrate ...

leaching, thereby becoming an environmental hazard [4]. Many of the major sources of nitrate come from the use and production of fertilizers and waste materials, which are anthropogenic sources of nitrate contamination of groundwater [5]. Although nitrogen exists in many forms, nitrate is the most available form to plants [6].

More

Assessment of nitrate leaching loss on a yield-scaled ...

Aug 20, 2013  Background and aims It is so far a gap in knowledge to assess nitrate (NO3 −) leaching loss linking with crop yield for a given cereal cropping system. Methods We conducted a meta-analysis on 32 published studies reporting both NO3 − leaching losses and crop yields in the maize (N = 20) and wheat (N = 12) systems. Results On average, 22 % and 15 % of applied fertilizer N to wheat and

More

Fertigation - Wikipedia

"Impacts of fertigation Via sprinkler irrigation on nitrate leaching and corn yield on an acid - sulphate soil in Thailand. Agricultural Water Management" 52(3): 197–213. Asadi, M.E., 2004.

More

Effect of Mangrove Biochar Residue Amended Shrimp Pond ...

Jun 28, 2021  leaching [24]. Nan et al. [5] showed that application of 2%, 4%, and 8% biochar reduced nitrogen leaching, increased water-holding capacity, enhanced microbial biomass, and changed the bacterial community structure of the soil. Thus far, the effects of adding biochar to sediment from shrimp ponds in terms of nutrient leaching and the abundance of

More

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.

More

Dissolved organic carbon and nitrogen in precipitation ...

Sep 30, 2005  Dissolved organic matter (DOM) is important for the cycling and transport of carbon (C) and nitrogen (N) in soil. In temperate forest soils, dissolved organic N (DON) partly escapes mineralization and is mobile, promoting loss of N via leaching. Little information is available comparing DOC and DON dynamics under tropical conditions.

More

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

More

Impacts of fertigation via sprinkler irrigation on nitrate ...

Asadi, Mohammad Esmaeil Clemente, Roberto S. Gupta, Ashim Das Loof, Rainer Hansen, Gunner K., 2002. "Impacts of fertigation via sprinkler irrigation on nitrate leaching and corn yield in an acid-sulphate soil in Thailand," Agricultural Water Management, Elsevier,

More

Use of tensiometer for in situ measurement of nitrate leaching

Jul 01, 1999  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}).

More

Nitrate leaching in a corn silage field fertigated via ...

No nitrate leaching occurred from the 0.85 ET c and 0.7 ET c treatments. The major portion of the fertilizer that was applied for 0.85 ET c and 0.7 ET c treatments remained unused in the soil, while a small amount was taken up by the corn crop and the remainder was volatilized.

More

Drinking-Water Nitrate, Methemoglobinemia, and Global ...

Oct 01, 2004  Guidelines and regulatory limits relating to the amount of nitrate in drinking water, of 10 mg/L nitrate–nitrogen (NO 3 –N) and 50 mg/L nitrate [nitrate concentrations are typically expressed either as mg/L NO 3 –N or nitrate (NO 3); 50 mg/L NO 3 is equivalent to 11.3 NO 3 –N], were established to prevent infantile methemoglobinemia [U.S. Environmental Protection Agency (EPA) 1977; WHO ...

More

[PDF] Nitrate leaching through climatologic water balance ...

Nitrate losses from soil profiles by leaching should preferentially be monitored during high rainfall events and during irrigation when fertilizer nitrogen applications are elevated. Using a climatologic water balance, based on the models of Thornthwaite and Penman Monteith for potential evapotranspiration, drainage soil water fluxes below the root zone were estimated in a fertigated coffee crop.

More

Estimation of the Effect of Soil Texture on Nitrate ...

leaching, thereby becoming an environmental hazard [4]. Many of the major sources of nitrate come from the use and production of fertilizers and waste materials, which are anthropogenic sources of nitrate contamination of groundwater [5]. Although nitrogen exists in many forms, nitrate is the most available form to plants [6].

More

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 ...

More

Fertigation - Wikipedia

"Impacts of fertigation Via sprinkler irrigation on nitrate leaching and corn yield on an acid - sulphate soil in Thailand. Agricultural Water Management" 52(3): 197–213. Asadi, M.E., 2004.

More

Dissolved organic carbon and nitrogen in precipitation ...

Sep 30, 2005  Dissolved organic matter (DOM) is important for the cycling and transport of carbon (C) and nitrogen (N) in soil. In temperate forest soils, dissolved organic N (DON) partly escapes mineralization and is mobile, promoting loss of N via leaching. Little information is available comparing DOC and DON dynamics under tropical conditions.

More

NITRATE LEACHING - svensk översättning - bab.la engelskt ...

Svensk översättning av 'nitrate leaching' - engelskt-svenskt lexikon med många fler översättningar från engelska till svenska gratis online. bab.la arrow_drop_down bab.la - Online dictionaries, vocabulary, conjugation, grammar Toggle navigation share

More

Irrigation sprinkler hose (rain pipe, rain tape, rain hos ...

"Impacts of fertigation Via sprinkler irrigation on nitrate leaching and corn yield on an acid - sulphate soil in Thailand. Agricultural Water Management" 52(3): 197-213. Asadi, M.E., 2004.

More

Blue babies and nitrate-contaminated well water ...

Oct 01, 2018  The use of nitrate-contaminated drinking water to prepare infant formula is a well-known risk factor for infant methemoglobinemia. Affected infants develop a peculiar blue-gray skin color and may become irritable or lethargic, depending on the severity of their condition.

More

About Us — Department of Plant Science

About Us. The first 'Green Revolution' in the 1960s was based on dwarf varieties of wheat and rice that were capable of responding to fertilizer and irrigation without lodging. The 'Second Green Revolution' will consist of crop genotypes with superior yield with limited supplies of water and nutrients The UN estimates that about 800 million ...

More

Sustainability Free Full-Text Effect of Mangrove ...

Mangrove biochar residue was used for nitrogen adsorption and retention in sediment, which is beneficial for plant germination. The present study investigated the effect of contact time (5–360 min), biochar dosage (0.2–2 g L−1), pH (5–6), and initial concentration (2–10 mg L−1) on NH4+-N and NO3−-N adsorption. Three different adsorption isotherm models were used to fit the ...

More

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

More

Nitrate leaching in a corn silage field fertigated via ...

No nitrate leaching occurred from the 0.85 ET c and 0.7 ET c treatments. The major portion of the fertilizer that was applied for 0.85 ET c and 0.7 ET c treatments remained unused in the soil, while a small amount was taken up by the corn crop and the remainder was volatilized.

More

Drinking-Water Nitrate, Methemoglobinemia, and Global ...

Guidelines and regulatory limits relating to the amount of nitrate in drinking water, of 10 mg/L nitrate–nitrogen (NO 3 –N) and 50 mg/L nitrate [nitrate concentrations are typically expressed either as mg/L NO 3 –N or nitrate (NO 3); 50 mg/L NO 3 is equivalent to 11.3 NO 3 –N], were established to prevent infantile methemoglobinemia [U.S. Environmental Protection Agency (EPA) 1977; WHO ...

More

[PDF] Nitrate leaching through climatologic water balance ...

Nitrate losses from soil profiles by leaching should preferentially be monitored during high rainfall events and during irrigation when fertilizer nitrogen applications are elevated. Using a climatologic water balance, based on the models of Thornthwaite and Penman Monteith for potential evapotranspiration, drainage soil water fluxes below the root zone were estimated in a fertigated coffee crop.

More

Nitrate leaching through oxisols of the Loyalty islands ...

Nitrate leaching through oxisols of the Loyalty Islands ( New Caledonia) under intensified agricultural practices C. Duwig * , T. Becquer a, B.E. Clothier b, M. Vauclin a ORSTOM, Laboratoire d’Agropédologie, B. P. AS, 98848 Noutnia Cedex, New Caledonia Environment Group, HortResearch, P.B. I 1-030, Palnzerston North, New Zealand

More

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 ...

More

To study the effect of natural Zeolites on nitrate, and ...

In order to study the effect of natural Zeolite on reduction of nitrate and ammonium leaching and also Yield increase of Maize Silage (Zea mays L.) single cross 704, a field experiment was conducted. Since the nitrogen fertilizer after entering the soil is quickly converted from ammonium nitrate, and nitrate ions produced in soil are negatively charged and are repelled by negatively charged ...

More

Nitrate removal from groundwater: a review of natural and ...

Nitrate contamination of groundwater is governed by natural biogeochemical processes that control nitrate leaching into groundwater. Within the root zone of the topsoil, nitrogen fixation and nitrification processes make nitrogen available to plants in the form of ammonium (NH 4 +) and nitrate

More

Using a Nitrogen Budget in Farm Management - Alabama ...

Oct 23, 2019  Leaching is the loss of nitrate nitrogen (NO3-N) with the downward movement of water through the soil profile. It is predominant in sandy soils such as the Coastal Plain soils of Alabama. Denitrification is the loss of nitrate nitrogen to the atmosphere in the form of various NxO gases (figure 3). Denitrification is favored when water stagnates ...

More

Why Would A Farmer Use Potassium Nitrate Rather Than ...

Jun 12, 2019  Potassium nitrate in fertilizer is an example of Uses Potash In Agriculture Fields. Its effectiveness has won many farmers over in using it to their crops and plants. The benefits stated above just enhance the advantages of using fertilizer with Potassium Nitrate compared to Ammonia Nitrate or other fertilizer available in the market.

More

User's Guide for the DNDC Model

crop yield, soil C dynamics, nitrate leaching loss, and trace gas emissions. A list of relevant publications is included in Part VII. These publications provide more information about the scientific background and applications of DNDC far beyond this User’s Guide. DNDC can run in two modes: site or regional. By selecting the mode, the users will

More

Nitrogen Balances, Nitrate Leaching and Energy Efficiency ...

Nitrogen Balances, Nitrate Leaching and Energy Efficiency of Conventional and Organic Farming Systems on Fertile Soils in Northern Germany (English) Loges, R. / Kelm F, M. R. / Taube / International Soil Tillage Research Organization

More

Irrigation sprinkler hose (rain pipe, rain tape, rain hos ...

"Impacts of fertigation Via sprinkler irrigation on nitrate leaching and corn yield on an acid - sulphate soil in Thailand. Agricultural Water Management" 52(3): 197-213. Asadi, M.E., 2004.

More

New plantain research a turning point for dairy

Jun 16, 2021  New plantain research a turning point for dairy. The Plantain Potency and Practice programme is designed to help dairy farmers meet environmental goals, government regulations and market expectations. Modelling by DairyNZ forecasts a potential reduction of 15,000 tonnes per year of nitratenitrogen leached on 4200 New Zealand dairy farms in ...

More