scholarly journals Paddy husk compost addition for improving nitrogen availability

2019 ◽  
Author(s):  
Omar Latifah ◽  
Osumanu Haruna Ahmed ◽  
Nik Muhammad Abdul Majid
Keyword(s):  
Nitrogen Availability ◽  
Nitrogen Loss ◽  
Soil Incubation ◽  
Nitrate Losses ◽  
Leaching Experiment ◽  
Soil Retention ◽  
Mature Compost ◽  
Leaching Experiments

Mature compost with good agronomic properties can be used to control nitrogen loss from soil. Soil incubation and leaching experiments were conducted to determine the effects of paddy husk compost addition on controlling ammonium and nitrate losses from Bekenu Series soil. Retention of soil exchangeable ammonium and available nitrate were significantly improved in soil amended with paddy husk compost treatments compared with urea alone thus, reducing leaching of these ions. At 30 days of the leaching experiment, ammonium and nitrate losses were highest in urea without paddy husk compost addition compared with co-application of urea and paddy husk compost because the treatment significantly improved retention of soil exchangeable ammonium and available nitrate. Urea can be co-applied with paddy husk compost to improve release of ammonium and nitrate and to retain nitrogen availability.

scholarly journals Improving Ammonium and Nitrate Release from Urea Using Clinoptilolite Zeolite and Compost Produced from Agricultural Wastes

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Latifah Omar ◽  
Osumanu Haruna Ahmed ◽  
Nik Muhamad Ab. Majid
Keyword(s):  
Chemical Properties ◽  
Soil Incubation ◽  
Soil Leaching ◽  
N Loss ◽  
Incubation Study ◽  
Leaching Experiment ◽  
Improper Use ◽  
Leaching Experiments ◽  
Clinoptilolite Zeolite ◽  
Better Than

Improper use of urea may cause environmental pollution throughNH3volatilization andNO3-leaching from urea. Clinoptilolite zeolite and compost could be used to control N loss from urea by controllingNH4+andNO3-release from urea. Soil incubation and leaching experiments were conducted to determine the effects of clinoptilolite zeolite and compost on controllingNH4+andNO3-losses from urea. Bekenu Series soil (Typic Paleudults) was incubated for 30, 60, and 90 days. A soil leaching experiment was conducted for 30 days. Urea amended with clinoptilolite zeolite and compost significantly reducedNH4+andNO3-release from urea (soil incubation study) compared with urea alone, thus reducing leaching of these ions. Ammonium andNO3-leaching losses during the 30 days of the leaching experiment were highest in urea alone compared with urea with clinoptilolite zeolite and compost treatments. At 30 days of the leaching experiment,NH4+retention in soil with urea amended with clinoptilolite zeolite and compost was better than that with urea alone. These observations were because of the high pH, CEC, and other chemical properties of clinoptilolite zeolite and compost. Urea can be amended with clinoptilolite zeolite and compost to improveNH4+andNO3-release from urea.

Nitrogen mineralisation in soil after addition of wine distillery waste compost: laboratory and field evaluation

Soil Research ◽  
2016 ◽  
Vol 54 (2) ◽  
pp. 144 ◽  
Author(s):  
M. I. Requejo ◽  
M. C. Cartagena ◽  
R. Villena ◽  
L. Giraldo ◽  
A. Arce ◽  
...  
Keyword(s):  
Field Evaluation ◽  
N Mineralisation ◽  
Soil Incubation ◽  
Nitrogen Mineralisation ◽  
Growing Seasons ◽  
Mature Compost ◽  
Distillery Waste ◽  
Aerobic Soil ◽  
Different Doses

The application of wastes from the wine-distillery industry as source of organic matter and nutrients could be a good option of agricultural management. This study is focused on soil nitrogen (N) mineralisation after addition of compost derived from this industry at different doses (7, 13 and 20 t ha–1). An aerobic soil incubation in controlled conditions was carried out to study N mineralisation from the soil-compost mixture as well as isolating the compost from the soil. The data were fitted to a non-linear regression obtaining low values of potentially mineralisable N (N0) and constants of mineralisation (k) (from 81 to 104 mg kg–1 and from 0.008 to 0.013 L day–1 for the soil-compost mixtures, and from 42 to 71 mg kg–1 and from 0.009 to 0.015 L day–1 for the increasing doses of compost) which indicates that it is a mature compost very resistant to mineralisation. Nitrogen mineralised (NM) in the field during two growing seasons (2011 and 2012) of a melon crop was calculated through a N balance, taking into account N inputs and outputs in the soil-plant system. NM in the unamended plots accounted to 31 kg ha–1 and 24 kg ha–1 in 2011 and 2012, respectively, and increased proportionally to the dose of compost applied until 113 kg ha–1 and 98 kg/ha in the consecutive years. The constants of mineralisation obtained in the laboratory were adjusted by field temperatures to predict NM in the field and a general overestimation was observed. The best estimates were obtained when considering the mixture of soil and compost, which reflects the important role of the soil to evaluate N mineralisation caused by the addition of organic wastes.

scholarly journals Controls of terrestrial ecosystem nitrogen loss on simulated productivity responses to elevated CO<sub>2</sub>

2018 ◽  
Vol 15 (18) ◽  
pp. 5677-5698 ◽  
Author(s):  
Johannes Meyerholt ◽  
Sönke Zaehle
Keyword(s):  
Plant Growth ◽  
Elevated Co2 ◽  
Large Scale ◽  
Nitrogen Availability ◽  
Carbon Sink ◽  
Nitrogen Loss ◽  
Terrestrial Ecosystem ◽  
Turnover Rates ◽  
Terrestrial Biosphere ◽  
Loss Rates

Abstract. The availability of nitrogen is one of the primary controls on plant growth. Terrestrial ecosystem nitrogen availability is not only determined by inputs from fixation, deposition, or weathering, but is also regulated by the rates with which nitrogen is lost through various pathways. Estimates of large-scale nitrogen loss rates have been associated with considerable uncertainty, as process rates and controlling factors of the different loss pathways have been difficult to characterize in the field. Therefore, the nitrogen loss representations in terrestrial biosphere models vary substantially, adding to nitrogen cycle-related uncertainty and resulting in varying predictions of how the biospheric carbon sink will evolve under future scenarios of elevated atmospheric CO2. Here, we test three commonly applied approaches to represent ecosystem-level nitrogen loss in a common carbon–nitrogen terrestrial biosphere model with respect to their impact on projections of the effect of elevated CO2. We find that despite differences in predicted responses of nitrogen loss rates to elevated CO2 and climate forcing, the variety of nitrogen loss representation between models only leads to small variety in carbon sink predictions. The nitrogen loss responses are particularly uncertain in the boreal and tropical regions, where plant growth is strongly nitrogen-limited or nitrogen turnover rates are usually high, respectively. This highlights the need for better representation of nitrogen loss fluxes through global measurements to inform models.

scholarly journals Controls of terrestrial ecosystem nitrogen loss on simulated productivity responses to elevated CO<sub>2</sub>

2018 ◽  
Author(s):  
Johannes Meyerholt ◽  
Sönke Zaehle
Keyword(s):  
Plant Growth ◽  
Large Scale ◽  
Nitrogen Availability ◽  
Carbon Sink ◽  
Nitrogen Loss ◽  
Terrestrial Ecosystem ◽  
Turnover Rates ◽  
Terrestrial Biosphere ◽  
Considerable Uncertainty ◽  
Loss Rates

Abstract. The availability of nitrogen is one of the primary nutritional controls on plant growth. Terrestrial ecosystem nitrogen availability is not only determined by inputs of fixation, deposition, and mineralization, but also regulated by the rates with which nitrogen is lost through various pathways. Large-scale nitrogen loss rates have been associated with considerable uncertainty, as process rates and controlling factors of the different loss pathways have been difficult to characterize in the field. Therefore, the nitrogen loss representations in terrestrial biosphere models vary substantially, adding to nitrogen cycle-related uncertainty and resulting in varying predictions of how the biospheric carbon sink will evolve under future scenarios of elevated atmospheric CO2. Here, we test three published approaches to represent ecosystem level nitrogen loss in a common carbon-nitrogen terrestrial biosphere model with respect to their impact on projections of the carbon effect of elevated CO2. We find that despite differences in predicted responses of nitrogen loss rates to biogeochemical and climate forcing, the variety of nitrogen loss representation between models only leads to small variety in carbon sink predictions. The nitrogen loss responses are particularly uncertain in the boreal and tropical regions, where plant growth is strongly nitrogen limited or nitrogen turnover rates are usually high, respectively. This highlights the need for better resolution of nitrogen loss fluxes through global measurements to inform models.

scholarly journals Nitrogen losses from two contrasting agricultural catchments in Norway

2019 ◽  
Vol 6 (12) ◽  
pp. 190490 ◽  
Author(s):  
Xueli Chen ◽  
Marianne Bechmann
Keyword(s):  
Nitrogen Loss ◽  
Runoff Water ◽  
N Losses ◽  
Total N ◽  
Agricultural Catchments ◽  
Nitrate Losses ◽  
High Precipitation ◽  
Agricultural Areas ◽  
Two Peaks ◽  
Main Factor

Nitrogen (N) losses from agricultural areas, especially into drinking water and marine environments, attract substantial attention from governments and scientists. This study analysed nitrogen loss from runoff water using long-term monitoring data (1994–2016) from the Skuterud catchment in southeastern Norway and the Naurstad catchment in northern Norway. Precipitation and runoff were lower in the Skuterud catchment than in the Naurstad catchment. However, in the Skuterud catchment, the annual total N (TN) losses ranged from 27 to 68 kg hm −2 . High precipitation (1247 mm) in the Naurstad catchment resulted in substantial runoff water (1108 mm) but relatively low total TN losses ranged from 17 to 35 kg hm −2 . The proportion of nitrate losses to TN loss was 51–86% and 28–50% in the Skuterud and Naurstad catchments, respectively. Furthermore, the monthly average TN concentrations and nitrate losses had two peaks, in April–May and October, in the Skuterud catchment; however, no significant fluctuations were found in the Naurstad catchment. The contributions of N and runoff water to TN and nitrate losses were calculated using multiple linear regression, and runoff water was the major contributor to TN loss in both catchments. Runoff water was the main factor in the Skuterud catchment, and the nitrate-N concentration was the main factor in the Naurstad catchment.

scholarly journals Producción y pérdida de nitrato en Brachiaria humidicola y Panicum maximum en el valle del río Sinú

2012 ◽  
Vol 13 (1) ◽  
pp. 55 ◽  
Author(s):  
Manuel Espinosa C. ◽  
José Marrugo ◽  
María Hurtado S. ◽  
Sony Reza G.
Keyword(s):  
Nitrogen Loss ◽  
Nitrification Inhibitor ◽  
Nitrous Oxide Emissions ◽  
Panicum Maximum ◽  
Brachiaria Humidicola ◽  
Nitrate Production ◽  
Nitrate Losses ◽  
Biological Nitrification ◽  
Nitrogen Treatments ◽  
Del Rio

<p>Las pérdidas de nitrógeno a partir de la nitrificación de las fertilizaciones nitrogenadas generan contaminación por las emisiones de óxido nitroso y lixiviación de nitrato. Los reportes de <em>Brachiaria </em>como inhibidor biológico de la nitrificación fueron evaluados al determinar las pérdidas de nitrato de <em>Brachiaria humidicola </em>CIAT 679 (planta indicadora de inhibición biológica de nitrificación) y <em>Panicum maximum </em>cv. tanzania (planta no inhibidora). Para la producción de nitrato se empleó la técnica de suelo incubado y para las pérdidas de nitrato se emplearon resinas de intercambio iónico PRSTM Probes. Los tratamientos de fertilización nitrogenada fueron de 0, 150 y 300 kg ha-1 por año; las resinas se instalaron a tres profundidades en el suelo, los análisis de laboratorio se realizaron mediante espectroscopía de ultravioleta visible con longitud de onda de 410 nm para nitrato. <em>B. humidicola </em>redujo las producciones de nitrato en el suelo y las dosis de nitrógeno no generaron variaciones en las producciones, lo que evidenció un efecto en la inhibición de la nitrificación. Las pérdidas de nitrato, se redujeron después de 18 meses en la <em>B. humidicola; </em>y para <em>P. maximum </em>puede evitar las pérdidas de nitrato por su habilidad de tomar el nitrógeno en forma amoniacal del suelo, pero no reduce la producción de nitrato, ya que no inhibe la nitrificación. Los suelos dedicados a la producción ganadera con la pastura <em>B. humidicola </em>pueden reducir las producciones y las pérdidas de nitrato. <em>P. maximum</em>, por su habilidad y buena respuesta a la fertilización nitrogenada pudo reducir las pérdidas, pero no logró reducir las producciones de nitrato. </p><p> </p><p><strong>Production and loss of nitrate in <em>Brachiaria humidicola </em>and <em>Panicum maximum </em>in the Sinu river valley</strong></p><p>Nitrogen loss, from the nitrification of nitrogen fertilizer, creates pollution through nitrous oxide emissions and nitrate leaching. The reports on <em>Brachiaria </em>as a biological nitrification inhibitor were evaluated to determine nitrate losses of <em>Brachiaria humidicola </em>CIAT 679 (indicator plant for biological nitrification inhibition) and <em>Panicum maximum </em>cv. tanzania (non-inhibiting plant). The incubated soil technique was used for the production of nitrate and for losses of nitrate, ion exchange PRSTM Probes resins were used. The nitrogen treatments were 0, 150 and 300 kg ha-1 per year, the resins were installed at three depths in the soil, laboratory analysis was performed using ultraviolet-visible spectroscopy with a wavelength of 410 nm for nitrate. <em>B. humidicola </em>reduced outputs of nitrate in the soil and the nitrogen doses did not generate variations in production, which showed an effect on the inhibition of nitrification. Nitrate losses were reduced after 18 months in <em>B. humidicola</em>, and <em>P. maximum </em>can avoid nitrate losses with its ability to take nitrogen from the soil in an ammonia form, but does not reduce nitrate production, and does not inhibit nitrification. In cattle pasture soils, <em>B. humidicola </em>can reduce nitrate production and loss. <em>P. maximum </em>with its ability and good response to nitrogenated fertilization could have reduced losses, but failed to reduce nitrate production. </p>

scholarly journals Effect of Mangrove Biochar Residue Amended Shrimp Pond Sediment on Nitrogen Adsorption and Leaching

2021 ◽  
Vol 13 (13) ◽  
pp. 7230
Author(s):  
Sokkeang Be ◽  
Soydoa Vinitnantharat ◽  
Anawat Pinisakul
Keyword(s):  
Contact Time ◽  
Nitrogen Loss ◽  
Nitrogen Adsorption ◽  
Nitrogen Leaching ◽  
Water Volume ◽  
Isotherm Models ◽  
Freundlich Model ◽  
Shrimp Pond ◽  
Adsorption Isotherm Models ◽  
Leaching Experiments

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 experimental data. Column leaching experiments were conducted to investigate the effect of biochar with sediment from a shrimp pond on nitrogen leaching at varying biochar dosages (0–8% w/w). The results showed that the maximum percentage of both NH4+-N and NO3−-N adsorption was achieved at an equilibrium contact time of 240 min, with an adsorbent dosage of 2 g L−1, and pH at 5.5 and 5, respectively. The adsorption of NH4+-N and NO3−-N were fitted to the Freundlich model and the adsorption process followed the physisorption and ion exchange. The addition of 8% biochar reduced both cumulative water volume and nitrogen leaching from the sediment. The biochar amendment increased the relative abundance of nitrifying and denitrifying bacteria in the sediment. This result suggested that biochar amended with sediment could be useful for nitrogen loss reduction.

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