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Nitrate Leaching Thailand

(PDF) Application of PESTFADE to Simulate Nitrate

Mar 01, 2002Simulate Nitrate Leaching in a Fertigated Corn Field in Thailand,Canadian Water R esources Journal / Revue canadienne des ressources

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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 canadienne des ressources hydriques: Vol. 27, No. 1, pp. 1-24.

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GIS-based and laboratory-scaled leaching assessment of

高达10%返现Sep 30, 2014A 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.

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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

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Impacts of fertigation via sprinkler irrigation on nitrate

Jan 23, 2002Leaching of NO 3 –N is economically and environmentally undesirable. Nitrate that leaches below the crop rooting zone represents the loss of a valuable plant nutrient, and, hence, an economic cost to agriculture. If the nitrate enters groundwater supplies, two major environmental problems can occur.

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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

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Nitrate-nitrogen leaching and modeling in intensive

The findings in this stone help to demonstrate the distribution and migration of nitrogen in intensive agriculture farmlands, as well as to explore the mechanism of groundwater contamination resulting from agricultural activities. Publication types Research Support, Non-U.S. Gov't MeSH terms Agriculture*

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Nitrate Accumulation and Leaching in Surface and Ground

Aug 20, 2015Nitrate 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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Agronomic Management for Reduced Nitrate Leaching

Jan 07, 2020The cost of reducing NO 3- leaching with fertilizer-N reductions of up to 50 lb/ac varies from $0.29 to 0.69/lb of leached nitrate-N (1.1 to 2.6% reduction in net return to fertilizer-N) for corn after corn and $0.53 to 1.18/lb N of leached nitrate-N (1.7 to 4.1% reduction in net return to fertilizer-N) for corn after soybean.

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Nitrate leaching, direct and indirect nitrous oxide fluxes

Mar 01, 2012Nitrate leaching was the dominant N loss pathway and annual leaching fluxes ranged from 19.2 to 53.4 kg N ha −1, with significant differences between individual observation years ( P < 0.05). Direct N 2 O emissions due to N fertilizer use were 1.72 ± 0.34 kg N ha −1 yr −1, which corresponds to an emission factor of 0.58 ± 0.12%.

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(PDF) Application of PESTFADE to Simulate Nitrate Leaching

Mar 01, 2002Simulate 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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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 canadienne des ressources hydriques: Vol. 27, No. 1, pp. 1-24.

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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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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

Contact

GIS-based and laboratory-scaled leaching assessment of

Sep 30, 2014A 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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(PDF) The Leaching Potential of Pesticides in Song Phi

Jun 11, 2019Due to the intensive agricultural activities, nitrate (NO3-) contamination is one of the problems for groundwater resource protection in

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Impacts of fertigation via sprinkler irrigation on nitrate

Jan 23, 2002A 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

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Nitrate Leaching from Maize Intercropping Systems with N

Sep 01, 2012However, compared to the CK treatment, nitrate leaching losses during the maize growing period were reduced by 20.9- 174.8 (CGT), 35.2-130.8 (CHM), 60.4-122.0 (CMX), and 30.6-82.4 kg ha -1 (CST). The results also suggested that intercropping is an effective way to reduce nitrogen leaching in fields with N fertilizer over-dose.

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nitrate leaching Research Papers Academia.edu

In general, nitrate leaching in biochar 4% less than control and biochar 2%. Also, at a height of 20 cm, the nitrate leaching rate decreased from the soil column. Conclusion: Regarding the results, the use of untreated combination of brassica napus and wheat biochar resulted in lower nitrate leaching from the soil.

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Monocropping an overview ScienceDirect Topics

A similar study with 0 ~ 200 kg N/ha input treatments in tropical Thailand indicated that the model tended to underestimate nitrate leaching, with a coefficient of determination of 0.86 (Asadi and Clemente, 2003).

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Contamination of nitrate in groundwater and its potential

Apr 01, 2015Nitrate contamination in groundwater is a worldwide problem especially in agricultural countries. Environmental factors, such as land-use pattern, type of aquifer, and soil-drainage capacity, affect the level of contamination. Exposure to high levels of nitrate in groundwater may contribute to adverse health effects among residents who use groundwater

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Nitrogen and phosphorus leaching losses from paddy fields

Jan 13, 2011NO 3 −-N, NH 4 +-N, and organic N leaching losses accounted for 19.8, 53.9, and 26.4% of the T-N during the entire limestone cultivation period in a field experiment in the central region of Thailand (Pathak et al. 2004). P in the soil exists as the negatively charged phosphate ion, but unlike nitrate, it does not leach easily with the downward

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Precipitation and irrigation dominate soil water leaching

Jan 01, 2019Impacts of fertilization 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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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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(PDF) Application of PESTFADE to Simulate Nitrate Leaching

Mar 01, 2002Simulate 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

Contact

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 canadienne des ressources hydriques: Vol. 27, No. 1, pp. 1-24.

Contact

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.

Contact

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

Contact

GIS-based and laboratory-scaled leaching assessment of

Sep 30, 2014A 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

Contact

(PDF) The Leaching Potential of Pesticides in Song Phi

Jun 11, 2019Due to the intensive agricultural activities, nitrate (NO3-) contamination is one of the problems for groundwater resource protection in

Contact

Impacts of fertigation via sprinkler irrigation on nitrate

Jan 23, 2002A 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

Contact

Nitrate Leaching from Maize Intercropping Systems with N

Sep 01, 2012However, compared to the CK treatment, nitrate leaching losses during the maize growing period were reduced by 20.9- 174.8 (CGT), 35.2-130.8 (CHM), 60.4-122.0 (CMX), and 30.6-82.4 kg ha -1 (CST). The results also suggested that intercropping is an effective way to reduce nitrogen leaching in fields with N fertilizer over-dose.

Contact

nitrate leaching Research Papers Academia.edu

In general, nitrate leaching in biochar 4% less than control and biochar 2%. Also, at a height of 20 cm, the nitrate leaching rate decreased from the soil column. Conclusion: Regarding the results, the use of untreated combination of brassica napus and wheat biochar resulted in lower nitrate leaching from the soil.

Contact

Monocropping an overview ScienceDirect Topics

A similar study with 0 ~ 200 kg N/ha input treatments in tropical Thailand indicated that the model tended to underestimate nitrate leaching, with a coefficient of determination of 0.86 (Asadi and Clemente, 2003).

Contact

Contamination of nitrate in groundwater and its potential

Apr 01, 2015Nitrate contamination in groundwater is a worldwide problem especially in agricultural countries. Environmental factors, such as land-use pattern, type of aquifer, and soil-drainage capacity, affect the level of contamination. Exposure to high levels of nitrate in groundwater may contribute to adverse health effects among residents who use groundwater

Contact

Nitrogen and phosphorus leaching losses from paddy fields

Jan 13, 2011NO 3 −-N, NH 4 +-N, and organic N leaching losses accounted for 19.8, 53.9, and 26.4% of the T-N during the entire limestone cultivation period in a field experiment in the central region of Thailand (Pathak et al. 2004). P in the soil exists as the negatively charged phosphate ion, but unlike nitrate, it does not leach easily with the downward

Contact

Precipitation and irrigation dominate soil water leaching

Jan 01, 2019Impacts of fertilization 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

Contact

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

Contact