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Articoli di riviste sul tema "Nitrate leaching"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Ritu, Nagdev1 2. Ambrina Sardar Khan3 and Shakeel Ahmed Khan4. "Nitrate leaching from agriculture fields." Trends In Agriculture Science 2, no. 3 (2023): 176–78. https://doi.org/10.5281/zenodo.7753670.

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Abstract (sommario):

Nitrate leaching is a naturally occurring process, it occurs when mobile nitrate from the mineral nitrogen pool is washed out of the root zone by runoff.  The main form of nitrogen that is leached is nitrate (NO3). Other forms of nitrogen, such as ammonium (NH4+), generally do not leach. Nitrate is very mobile therefore it can be easily transported by water. Manures, decompose of plants and other organic materials, fertilisers are possible sources of nitrates. When it is within the root zone, there is no issue, but if it enters the groundwater and other freshwater areas, it becomes a

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2

Castellón, César I., Pía C. Hernández, Lilian Velásquez-Yévenes, and María E. Taboada. "An Alternative Process for Leaching Chalcopyrite Concentrate in Nitrate-Acid-Seawater Media with Oxidant Recovery." Metals 10, no. 4 (2020): 518. http://dx.doi.org/10.3390/met10040518.

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An alternative copper concentrate leaching process using sodium nitrate and sulfuric acid diluted in seawater followed by gas scrubbing to recover the sodium nitrate has been evaluated. The work involved leaching test carried out under various condition by varying temperature, leaching time, particle size, and concentrations of NaNO3 and H2SO4. The amount of copper extracted from the chalcopyrite concentrate leached with seawater, 0.5 M of H2SO4 and 0.5 M of NaNO3 increased from 78% at room temperature to 91% at 45 °C in 96 h and 46 h of leaching, respectively. Gas scrubbing with the alkaline

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3

Ma, Xi Xi, and Jian Jun Yuan. "Study on the Leaching of Sodium Nitrate from Nitratine." Advanced Materials Research 236-238 (May 2011): 2539–43. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.2539.

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The technology on the leaching process of sodium nitrate from nitratine was developed in this work. The effects of leaching duration, solid-to-liquid ratio on the leaching were studied. The results show that the utilizable sodium nitrate leaching ratio from the nitratine reach 90.2%, for leaching duration of 15 minute and at the solid-to-liquid ratio of 1.0 g.g-1. A new scheme of step-by-step spray is advanced, according to the result of leaching repeatedly, which increased the concentration of lixiviation up to 29.58%( 400g.L-1) at 25°C. The results reported will be useful for leaching proces

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4

Ji, Shu Hua, and Jiang Yang Deng. "Numerical Simulation on Characteristics of Nitrate Nitrogen Leaching under Different Irrigation Levels." Applied Mechanics and Materials 662 (October 2014): 153–59. http://dx.doi.org/10.4028/www.scientific.net/amm.662.153.

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The characteristics of nitrate nitrogen leaching in soil under different irrigation levels were studied by soil column simulation experiment with numerical simulation done using LEACHM model taking nitrate nitrogen leaching under different irrigation levels as the research background. In sandy soils, an irrigation amount of 300 mm would cause nitrate nitrogen to leach downward 75~150 cm, with a leaching amount of 10~30.7 kg/ha; and an irrigation amount of 700 mm would make nitrate nitrogen leach downward about 3.5 m, with a leaching amount of 98 kg/ha. Research data showed that the amount of n

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5

Kaluli, J. W., C. A. Madramootoo, and Y. Djebbar. "Modeling nitrate leaching using neural networks." Water Science and Technology 38, no. 7 (1998): 127–34. http://dx.doi.org/10.2166/wst.1998.0285.

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Accurate evaluation of nitrate leaching potential in agricultural fields is a major challenge. Field data are expensive to gather and use of existing prediction models is limited by inadequate understanding of the physical and chemical processes underlying nitrate leaching. A neural network model was developed to acquire the inherent characteristics of an experimental data set, and successfully used to simulate nitrate leaching in agricultural drainage effluent under various management systems. Simulation results indicated that: (i) sub-irrigation with a 0.5 m water table depth could reduce ni

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6

Aoun, Omar, Salem Benamara, Farid Dahmoune, et al. "Modeling of nitrate leaching kinetics during Spinach Leaf Midribs blanching." North African Journal of Food and Nutrition Research 2, no. 4 (2018): 112–20. http://dx.doi.org/10.51745/najfnr.2.4.112-120.

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Background: Although nitrates, are sometimes favorable to health, they can however convert to nitrosamines inside the body thanks to the acidic medium of gastrointestinal tract. So, the investigation of the nitrate content in food products becomes an imperative since it allows consumers to choose their food deliberately. Aims: The leaching kinetics of nitrates during water blanching of spinach leaf midribs (SLM) was investigated at different conditions of time and temperature. Methods and Material: The nitrate leaching kinetics, during the water blanching of SLM samples, was studied at 60, 70

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7

Defterdarović, Jasmina, Lana Filipović, Filip Kranjčec, et al. "Determination of Soil Hydraulic Parameters and Evaluation of Water Dynamics and Nitrate Leaching in the Unsaturated Layered Zone: A Modeling Case Study in Central Croatia." Sustainability 13, no. 12 (2021): 6688. http://dx.doi.org/10.3390/su13126688.

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Nitrate leaching through soil layers to groundwater may cause significant degradation of natural resources. The aims of this study were: (i) to estimate soil hydraulic properties (SHPs) of the similar soil type with same management on various locations; (ii) to determine annual water dynamics; and (iii) to estimate the impact of subsoil horizon properties on nitrate leaching. The final goal was to compare the influence of different SHPs and layering on water dynamics and nitrate leaching. The study was conducted in central Croatia (Zagreb), at four locations on Calcaric Phaeozem, Calcaric Rego

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8

Pote, John W., Chhandak Basu, Zhongchun Jiang, and W. Michael Sullivan. "Relationship between Nitrate Leaching under Turf and Nitrate Uptake by Turfgrasses." HortScience 35, no. 5 (2000): 827B—827. http://dx.doi.org/10.21273/hortsci.35.5.827b.

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Leaching-induced N losses have been shown to be minimal under turfgrasses. This is likely due to superior ability of turfgrasses to absorb nitrate. No direct evidence for this theory has been reported. The present study quantified nitrate leaching under miniature turf and nitrate uptake by individual turfgrass plants, and established the relationship between nitrate leaching loss and nitrate uptake rate. Seedlings of six Kentucky bluegrass (Poa pratensis L.) cultivars, `Blacksburg', `Barzan', `Connie', `Dawn', `Eclipse', and `Gnome', were planted individually in polystyrene containers filled w

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9

Sazali, Norsuhailizah, Norazlianie Sazali, Zawati Harun, et al. "The Comparative Study on the Influence of Inorganic Soil Amendment on the Growth and Leaching Analysis of the Brassica Family." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 124, no. 1 (2024): 79–92. https://doi.org/10.37934/arfmts.124.1.7992.

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Research on the positive effects of inorganic soil amendments in the agricultural sector has been steadily increasing to demonstrate their impact on plant development and the reduction of leaching. In this study, kaolin, metakaolin, zeolite, and perlite, which operate as inorganic soil amendments, were mixed with soil to determine their effectiveness in promoting Brassica growth and reducing the leaching of nitrite and nitrate. Seven alternative treatments; control standard (SS), control low (SL), 3g kaolin (3gK), 3g metakaolin (3gM), 3g zeolite (3gz), 5g of zeolite (5gZ), and 5g of perlite (5

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10

Adelman, D. D., and M. A. Tabidian. "The potential impact of soil carbon content on ground water nitrate contamination." Water Science and Technology 33, no. 4-5 (1996): 227–32. http://dx.doi.org/10.2166/wst.1996.0509.

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A potential buildup of nitrate in the ground water resources of the eastern Sandhills of Nebraska has been projected to occur due to the intensive use of nitrogen fertilizer on irrigated cropland. A root-zone nitrate leaching study in this area revealed that soils with a high carbon concentration had minimal leaching compared to soils with lower concentrations. Soils high in carbon have an active population of denitrifying bacteria possibly causing denitrification and in turn reduction of nitrate leaching. Denitrifying bacteria are principally heterotrophic using soil organic carbon for both a

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11

Vogeler, Iris, Adeline Blard, and Nanthi Bolan. "Modelling DCD effect on nitrate leaching under controlled conditions." Soil Research 45, no. 4 (2007): 310. http://dx.doi.org/10.1071/sr06177.

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Effects of nitrogen losses through nitrate leaching are one of the major environmental issues worldwide. To determine the potential effect of dicyandiamide (DCD), a nitrification inhibitor, on the transformation of urea nitrogen and subsequent nitrate leaching, incubation and column leaching experiments were performed. Tokomaru silt loam soil was treated with urea, DCD, or urea plus DCD. A control was also used. In the laboratory incubation experiment, the conversion of urea to ammonium (i.e. ammonification process or urea hydrolysis) occurred within a day, thereby increasing the soil pH from

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12

AOUN, Omar, Salem BENAMARA, Farid DAHMOUNE, et al. "Modeling of nitrate leaching kinetics during Spinach Leaf Midribs blanching." North African Journal of Food and Nutrition Research 02, no. 04 (2018): 111–19. https://doi.org/10.5281/zenodo.1484488.

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Abstract (sommario):

<strong>Background:</strong>  Although nitrates, are sometimes favorable to health, they can however convert to nitrosamines inside the body thanks to the acidic medium of gastrointestinal tract. So, the investigation of the nitrate content in food products becomes an imperative since it allows consumers to choose their food deliberately. <strong>Aims:</strong>  The leaching kinetics of nitrates during water blanching of spinach leaf midribs (SLM) was investigated at different conditions of time and temperature.  <strong>Methods and Material:</strong>  The nitrate leaching

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13

Hu, Caixia, Jie Li, Yaxu Pang, et al. "Deep-Learning-Driven Insights into Nitrogen Leaching for Sustainable Land Use and Agricultural Practices." Land 14, no. 1 (2025): 69. https://doi.org/10.3390/land14010069.

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Nitrate leaching from soil presents a significant threat to soil health, as it can result in nutrient loss, soil acidification, and structural damage. It is crucial to quantify the spatial heterogeneity of nitrate leaching and its drivers. A total of 509 observational data points regarding nitrate leaching in northern China were collected, capturing the spatial and temporal variations across crops such as winter wheat, maize, and greenhouse vegetables. A machine learning (ML) model for predicting nitrate leaching was then developed, with the random forest (RF) model outperforming the support v

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14

van Bochove, E., M. M. Savard, G. Thériault, R. Cherif, N. Ziadi, and J. MacLeod. "Nitrogen fertilizer impact on the Wilmot watershed aquifer in Prince Edward Island, Canada." Water Science and Technology 56, no. 1 (2007): 243–51. http://dx.doi.org/10.2166/wst.2007.458.

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The objective of this study is to estimate the soil N flux from the vadose zone to the aquifer of the Wilmot watershed (Prince Edward Island, Canada) for a typical three-year cropping rotation (barley–red clover–potato). A conceptual model estimates that 199–221 tons of N were yearly available for leaching at the watershed scale. A significant portion of this N amount was available for leaching at the end of the crop season representing 80–90% of the annual N balance. Drainage water nitrate concentrations were significantly higher after the potato-rotation year than during the crop season. Low

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15

KOWALENKO, C. G. "THE DYNAMICS OF INORGANIC NITROGEN IN A FRASER VALLEY SOIL WITH AND WITHOUT SPRING OR FALL AMMONIUM NITRATE APPLICATIONS." Canadian Journal of Soil Science 67, no. 2 (1987): 367–82. http://dx.doi.org/10.4141/cjss87-032.

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Nitrogen in fallow soil in four field trials was monitored at Agassiz to examine the response of N processes under humid weather conditions of south coastal British Columbia. Inorganic N in the soil profile of control and ammonium-nitrate-treated plots were compared at various time intervals. In two trials (Spring-78 and Spring-81) treatments were applied in late May and in two (Fall-79 and Fall-82) in early November. Leaching of spring-applied N was quite limited during the spring and summer. In the Spring-78 trial, there was negligible nitrate movement until September whereas in the Spring-8

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16

Sukreeyapongse, O., S. Panichsakpatana, and J. Thongmarg. "Nitrogen leaching from soil treated with sludge." Water Science and Technology 44, no. 7 (2001): 145–50. http://dx.doi.org/10.2166/wst.2001.0410.

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The amount of sludge generated from urban centers is increasing more and more, so wastewater treatment plants are being constructed. Recycling of sludge by application to agricultural land can alleviate the disposal pressure, and, at the same time, utilize the plant nutrients in the waste. Organic nitrogen in sludge is mineralized to inorganic forms such as nitrate and ammonium that can be taken up by plants. The inorganic forms of nitrogen, especially nitrates, can easily be leached because of its negative charge. Not only do nitrates cause eutrophication, but, at high concentration in drinki

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17

White, R. E., L. K. Heng, and G. N. Magesan. "Nitrate leaching from a drained, sheep-grazed pasture. II. Modelling nitrate leaching losses." Soil Research 36, no. 6 (1998): 963. http://dx.doi.org/10.1071/s98012.

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Nitrate (NO-3 ) concentrations in 0·5-mm increments of drainage from adjacent mole- and pipe-drained paddocks of a silt loam soil under pasture near Palmerston North, New Zealand, were measured during 2 winters. The data were simulated using a simple analytical transfer function model (TFM). Urea fertiliser applied at the rate of 120 kg N/ha to one paddock was treated as a pulse input to the pool of resident soil NO-3. A source{sink term was included for plant uptake and net mineralisation (including any effect of denitrification). During the first winter (1990), a TFM using either a 1-paramet

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18

Lilburne, L. R., T. H. Webb, and G. S. Francis. "Relative effect of climate, soil, and management on risk of nitrateleaching under wheat production in Canterbury, New Zealand." Soil Research 41, no. 4 (2003): 699. http://dx.doi.org/10.1071/sr02083.

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The GLEAMS simulation model was used to determine the relative effects of climate (19 years of data), soil type (4 soils distinguished by effective soil depth), and farm management (6 sowing dates and 5 levels of nitrogen fertiliser) on leaching of nitrate under wheat production. All combinations of inputs were simulated and the effects of each input were estimated with sensitivity analysis software (SimLab). Soil type, climate, and sowing date explained about equal amounts of the variance in nitrate leaching, whereas fertiliser application explained only about one-third of the variance of the

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19

Koós, Sándor, Béla Pirkó, Gábor Szatmári, et al. "Influence of the Shortening of the Winter Fertilization Prohibition Period in Hungary Assessed by Spatial Crop Simulation Analysis." Sustainability 13, no. 1 (2021): 417. http://dx.doi.org/10.3390/su13010417.

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The Nitrates Directive aims (a) to protect water quality across Europe from nitrates originating from agricultural sources that pollute ground and surface water, and (b) to promote good farming practices. One of the most controversial measures of the directive is the winter prohibition period of fertilization, which has been extended by a month in two steps in recent years. According to the regulation, it is forbidden to apply nitrogen fertilization in Hungary between 31st October and 15th February, even though the winter climate is gradually becoming milder. Using the fertilization data of ne

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20

Swinton, Scott M., and David S. Clark. "Farm-Level Evaluation of Alternative Policy Approaches to Reduce Nitrate Leaching from Midwest Agriculture." Agricultural and Resource Economics Review 23, no. 1 (1994): 66–74. http://dx.doi.org/10.1017/s1068280500000423.

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Policies to reduce nitrate leaching are evaluated using a mixed integer linear programming model of a representative Michigan cash grain farm. At spring 1993 prices, elimination of the current deficiency payment program is found to be more efficient at reducing leaching than a nitrogen input tax, a tax credit on biologically fixed nitrogen, a rotation payment, or obligatory use of the Integrated Farm Management Program Option (IFMPO). However, elimination of the deficiency payment program would significantly reduce farm income. Modeling risk management and nitrate leaching dynamics are useful

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Németh, T., L. Pásztor, and J. Szabó. "Stochastic modelling of N-leaching using gis and multivariate statistical methods." Water Science and Technology 38, no. 10 (1998): 191–97. http://dx.doi.org/10.2166/wst.1998.0401.

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After the growing season, a part of the nitrogen remains in forms sensitive to changes of the conditions, such as nitrate. In years with above-average precipitation a significant amount of nitrate can leave the rooting zone. Integration of knowledge related to environmental conditions of a certain area with the soil, water, and crop management practices helps to prevent the simultaneity of the unfavourable processes leading to nitrate leaching, thus water resources may be protected from nitrate pollution of agricultural origin. In our work we present a stochastic approach for the evaluation of

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Liu, Hu, Hui Zhou, and Hongfang Li. "Assessing the Impact of Organic-Inorganic Nitrogen Application on Maize Yield and Nitrogen Leaching Using the DNDC Model." E3S Web of Conferences 573 (2024): 01017. http://dx.doi.org/10.1051/e3sconf/202457301017.

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In order to optimize maize yield and minimize nitrogen leaching, field experiments and DNDC model simulations assessed various organic-inorganic nitrogen application treatments. Trials were conducted in the Hetao irrigation area of Inner Mongolia, comparing six treatments: no nitrogen (CK), solely inorganic nitrogen (U1), and combinations where 25%, 50%, 75%, and 100% of inorganic nitrogen was replaced with organic nitrogen (U3O1, U1O1, U1O3, O1). The DNDC model was calibrated using the U1 treatment data from 2018-2020 and validated with other treatments. Results indicated the model accurately

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Solomon, Rejoice Ibrahim. "Biochar Amendments for Reducing Nitrate Leaching from Soils of Different Textural Classes in the Nigerian Savanna." Turkish Journal of Agriculture - Food Science and Technology 10, no. 8 (2022): 1363–68. http://dx.doi.org/10.24925/turjaf.v10i8.1363-1368.4855.

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This study was carried out with the aim of assessing the effectiveness of four biochar materials; in reducing nitrate leaching from soils of three different textural classes in the Nigerian Savanna region. Soil samples (0-20 cm depth) were collected from three different soil types and three different locations each in the Nigerian Savanna using stratified random sampling. Two hundred and fifty (250) g of soil samples were amended with 0, 2.5, 5, 7.5 and 10 tonha-1 of Maize cob biochar (MCB), rice husk biochar (RHB), cow dung biochar (CDB) and poultry litter biochar (PLB) and were subjected to

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Curk, Miha, Matjaž Glavan, and Marina Pintar. "Analysis of Nitrate Pollution Pathways on a Vulnerable Agricultural Plain in Slovenia: Taking the Local Approach to Balance Ecosystem Services of Food and Water." Water 12, no. 3 (2020): 707. http://dx.doi.org/10.3390/w12030707.

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Groundwater pollution with nitrate of agricultural origin is a major problem in many countries. A great deal of effort is focused on finding ways to reduce leaching from agricultural land. In this study, different land management scenarios were evaluated with the SWAT model in order to determine which are the most effective in reducing nitrate leaching on specific soil types in the Krška kotlina alluvial plain (Slovenia). The area is very important both for agriculture production and drinking water resources. The model was calibrated for three soil moisture field trial sites, each representing

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Curk, Miha, Matjaž Glavan, and Marina Pintar. "Analysis of Nitrate Pollution Pathways on a Vulnerable Agricultural Plain in Slovenia: Taking the Local Approach to Balance Ecosystem Services of Food and Water." Water 12, no. 3 (2020): 707. https://doi.org/10.3390/w12030707.

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Abstract (sommario):

Groundwater pollution with nitrate of agricultural origin is a major problem in many countries. A great deal of effort is focused on finding ways to reduce leaching from agricultural land. In this study, different land management scenarios were evaluated with the SWAT model in order to determine which are the most effective in reducing nitrate leaching on specific soil types in the Kr&scaron;ka kotlina alluvial plain (Slovenia). The area is very important both for agriculture production and drinking water resources. The model was calibrated for three soil moisture field trial sites, each repre

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Ritter, W. F., R. W. Scarborough, and A. E. M. Chirnside. "Nitrate Leaching under Irrigated Corn." Journal of Irrigation and Drainage Engineering 119, no. 3 (1993): 544–53. http://dx.doi.org/10.1061/(asce)0733-9437(1993)119:3(544).

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Shepherd, M. A. "Poultry manure and nitrate leaching." World's Poultry Science Journal 49, no. 2 (1993): 171–72. http://dx.doi.org/10.1079/wps19930015.

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Shepherd, M. A., D. J. Hatch, S. C. Jarvis, and A. Bhogal. "Nitrate leaching from reseeded pasture." Soil Use and Management 17, no. 2 (2006): 97–105. http://dx.doi.org/10.1111/j.1475-2743.2001.tb00014.x.

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Glavan, Matjaž, and Rozalija Cvejić. "Evaluation of Agricultural Measures to Safeguard the Vulnerable Karst Groundwater Habitat of the Black Olm (Proteus anguinus parkelj) from Nitrate Pollution." Sustainability 16, no. 24 (2024): 11309. https://doi.org/10.3390/su162411309.

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The black olm (Proteus anguinus parkelj Sket & Arntzen) is an endemic species found exclusively in the Dobličica River subterranean water systems of the Dinaric karst in southern Slovenia. These unique habitats are vulnerable to contamination due to rapid water flow, primarily from nitrates from agricultural fertilisers and untreated urban wastewater. The safe limit of nitrate concentration for olms is 9.2 mg NO3−/L, yet measurements in karst springs have shown levels ranging from 3 mg to over 20 mg NO3−/L. The SWAT modelling tool assessed agri-environmental and land use scenarios for thei

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Haberle, Jan, Pavel Svoboda, Tomáš Šimon, Gabriela Kurešová, Barbora Henzlová, and Jan Klír. "Distribution of Mineral Nitrogen in Soil in Relation to Risk of Nitrate Leaching in Farms with Irrigated Vegetables and Early Potatoes." Journal of Horticultural Research 26, no. 2 (2018): 47–54. http://dx.doi.org/10.2478/johr-2018-0015.

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Abstract Vegetable production may be the source of excessive residual nitrate that is prone to leaching to waters. To ascertain the risk of nitrate leaching in water collection area, the content of soil mineral nitrogen (Nmin = N-NO3− + N-NH4+) down to 120 cm depth was monitored in the years 2013–2016 on vegetable farms along lower Jizera river (in the Czech Republic). The risk of nitrate leaching below 30, 60, 90 and 120 cm during winter period was simulated with a simple model. The depths represent the limits of effective root depth and N depletion of groups of vegetables and field crops. Th

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Shekofteh, Hosein, Majid Afyuni, Mohammad Ali Hajabbasi, et al. "Nitrate leaching from a potato field using adaptive network-based fuzzy inference system." Journal of Hydroinformatics 15, no. 2 (2012): 503–15. http://dx.doi.org/10.2166/hydro.2012.075.

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The conventional methods of application of nitrogen fertilizers might be responsible for the increased nitrate concentration in groundwater of areas dominated by irrigated agriculture. Appropriate water and nutrient management strategies are required to minimize groundwater pollution and to maximize nutrient use efficiency and production. Design and operation of a drip fertigation system requires understanding of nutrient leaching behavior in cases of shallow rooted crops such as potatoes which cannot extract nutrient from a lower soil depth. This study deals with neuro-fuzzy modeling of nitra

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Asibi, Aziiba Emmanuel, Wen Yin, Falong Hu, et al. "Optimized nitrogen rate, plant density, and irrigation level reduced ammonia emission and nitrate leaching on maize farmland in the oasis area of China." PeerJ 10 (January 19, 2022): e12762. http://dx.doi.org/10.7717/peerj.12762.

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Nitrogen fertilizers play a key role in crop production to meet global food demand. Inappropriate application of nitrogen fertilizer coupled with poor irrigation and other crop management practices threaten agriculture and environmental sustainability. Over application of nitrogen fertilizer increases nitrogen gas emission and nitrate leaching. A field experiment was conducted in China’s oasis irrigation area in 2018 and 2019 to determine which nitrogen rate, plant density, and irrigation level in sole maize (Zea mays L.) cropping system reduce ammonia emission and nitrate leaching. Three nitr

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Curk, Miha, and Matjaž Glavan. "Assessing and Mapping the Environmental Impacts of Best Management Practices in Nitrate-Vulnerable Areas." Water 15, no. 13 (2023): 2364. http://dx.doi.org/10.3390/w15132364.

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This investigation explores the impact of various management practices on nitrate leaching and crop yield in two specific areas in Slovenia. The issue of nitrate leaching from agricultural land is a worldwide threat to drinking water, and despite years of research efforts, universal solutions are still unknown. The two chosen study sites are significant because of their importance for agricultural production and because groundwater aquifers beneath are main sources of drinking water, which makes imposing mitigation measures challenging. One of the areas was reported to be of “bad” status accor

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Pandorf, Madelyn, Leila Pourzahedi, Leanne Gilbertson, Gregory V. Lowry, Pierre Herckes, and Paul Westerhoff. "Graphite nanoparticle addition to fertilizers reduces nitrate leaching in growth of lettuce (Lactuca sativa)." Environmental Science: Nano 7, no. 1 (2020): 127–38. http://dx.doi.org/10.1039/c9en00890j.

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This study focused on nitrate leaching through soil during growth of romaine lettuce where 2-D graphite (CNPs) were combined with fertilizer and applied to soil to test the CNP effect on yield, nitrate leaching, and plant nutrient uptake.

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Heinrich, Aaron, Richard Smith, and Michael Cahn. "Winter-killed Cereal Rye Cover Crop Influence on Nitrate Leaching in Intensive Vegetable Production Systems." HortTechnology 24, no. 5 (2014): 502–11. http://dx.doi.org/10.21273/horttech.24.5.502.

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Abstract (sommario):

High levels of residual soil nitrate are typically present in cool-season vegetable fields in coastal regions of California in the fall, after the production of multiple crops over the course of the growing season. This nitrate is subject to leaching with winter rains when fields are left fallow. Although the benefits of growing nitrate scavenging cover crops on soil and water quality are well documented, the portion of vegetable production fields planted to winter cover crops in this region is low. Most growers leave their fields unplanted in bare-fallow beds because the risk of having too mu

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36

Luo, Xiaosheng, Changlin Kou, and Qian Wang. "Optimal Fertilizer Application Reduced Nitrogen Leaching and Maintained High Yield in Wheat-Maize Cropping System in North China." Plants 11, no. 15 (2022): 1963. http://dx.doi.org/10.3390/plants11151963.

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Abstract (sommario):

Agricultural nitrogen (N) non-point source pollution in the North China Plain is a major factor that affects water quality and human health. The characteristics of N leaching under different N application conditions should be further quantified accurately in winter wheat (Triticum aestivum L.) and summer maize (Zea mays L.) rotation farmland in North China, and a basis for reducing the risk and evaluation of N leaching in this area. A three-year field experiment was conducted using an in situ leakage pond method at a typical farmland in Henan in 2017–2020. Crop yield, soil nitrate N residues,

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37

Thorn, R. H. "Factors affecting the Leaching of Nitrate to Groundwater in the Republic of Ireland." Irish Geography 19, no. 1 (2016): 23–32. http://dx.doi.org/10.55650/igj.1986.706.

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Abstract (sommario):

The results of a field investigation into the factors affecting the leaching of nitrate to groundwater in the Republic of Ireland are presented. The leaching of nitrate is shown to be affected by the amount of fertiliser nitrogen applied and the number of applications. No clear relationship was found between soil texture and the amount of nitrate leached and the leaching of mineralised and nitrified nitrogen occurred in only a small number of plots. The data on the effect that the amount of infiltration had on the amount of nitrate leached were inconclusive but dilution was shown to have a mar

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38

Huber, B., J. Luster, S. M. Bernasconi, J. Shrestha, and E. Graf Pannatier. "Nitrate leaching from short-hydroperiod floodplain soils." Biogeosciences Discussions 9, no. 5 (2012): 5659–94. http://dx.doi.org/10.5194/bgd-9-5659-2012.

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Abstract (sommario):

Abstract. Numerous studies have shown the importance of riparian zones to reduce nitrate (NO3–) contamination coming from adjacent agricultural land. Much less is known about nitrogen (N) transformations and nitrate fluxes in riparian soils with short hydroperiods (1–3 days of inundation) and there is no study that could show whether these soils are a N sink or source. Within a restored section of the Thur River in NE Switzerland, we measured nitrate concentrations in soil solutions as an indicator of the net nitrate production. Samples were collected along a quasi-successional gradient from f

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39

Huber, B., J. Luster, S. M. Bernasconi, J. Shrestha, and E. Graf Pannatier. "Nitrate leaching from short-hydroperiod floodplain soils." Biogeosciences 9, no. 11 (2012): 4385–97. http://dx.doi.org/10.5194/bg-9-4385-2012.

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Abstract (sommario):

Abstract. Numerous studies have shown the importance of riparian zones to reduce nitrate (NO3−) contamination coming from adjacent agricultural land. Much less is known about nitrogen (N) transformations and nitrate fluxes in riparian soils with short hydroperiods (1–3 days of inundation) and there is no study that could show whether these soils are a N sink or source. Within a restored section of the Thur River in NE Switzerland, we measured nitrate concentrations in soil solutions as an indicator of the net nitrate production. Samples were collected along a quasi-successional gradient from f

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40

JONES, R. DAVID, and A. PAUL SCHWAB. "NITRATE LEACHING AND NITRITE OCCURRENCE IN A FINE-TEXTURED SOIL." Soil Science 155, no. 4 (1993): 272–82. http://dx.doi.org/10.1097/00010694-199304000-00006.

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41

Gasser, M. O., M. R. Laverdière, R. Lagacé, and J. Caron. "Impact of potato-cereal rotations and slurry applications on nitrate leaching and nitrogen balance in sandy soils." Canadian Journal of Soil Science 82, no. 4 (2002): 469–79. http://dx.doi.org/10.4141/s01-050.

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Abstract (sommario):

Groundwater quality is at risk when high levels of N fertilizers are used on sandy soils. A monitoring program was initiated in the summer of 1995, to quantify nitrate leaching in sandy soils used for potato production near Quebec city, Canada. Three drainable lysimeters were installed in each of five fields, for a total of 15 lysimeters. During a 5-yr monitoring period, crop N uptake, mineral and organic N fertilizers use, nitrate concentrations and fluxes from drainage water at 1-m soil depth were assessed under potato, cereal and hay crops. In one field, a clover and timothy sod that receiv

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42

Merhaut, Donald J., and Julie P. Newman. "(127) Effects of Substrate on Nutrient Uptake and Nitrate Leaching in Lilies." HortScience 40, no. 4 (2005): 1085E—1086. http://dx.doi.org/10.21273/hortsci.40.4.1085e.

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Abstract (sommario):

Lilies are produced throughout the year in coastal areas of California. Cultural practices involve daily applications of water and fertilizer, using both controlled release fertilizers (CRF) and liquid fertilizers (LF). However, many production facilities are in proximity to coastal wetlands and are therefore at greater risk of causing nitrogen pollution via runoff and leaching. Due to federal and state regulations, nurseries must present a plan of best management practices (BMPs) to mitigate nutrient runoff and leaching and begin implementing these practices in the next 2 years. In the follow

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43

Neelam Patel and T.B.S. Rajput. "Effect of Subsurface Drip System in Nitrate Leaching." Journal of Agricultural Engineering (India) 47, no. 1 (2024): 43–47. http://dx.doi.org/10.52151/jae2010471.1401.

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Abstract (sommario):

Fertigation enables the application of soluble fertilizers and other chemicals along with irrigation water, uniformly and more efficiently. Improved water efficiency under drip irrigation, by reducing percolation and evaporation losses, provides for environmentally safer fertilizer application through the irrigation water. The overall problem is to identify economically viable practices that offer a significant reduction of NO3-N losses through leaching, which also fit in the farming systems practiced under a particular soil type and set of climate conditions. An experiment was conducted at Pr

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44

Ball-Coelho, B. R., R. C. Roy, and A. J. Bruin. "Nitrate leaching as affected by liquid swine manure and cover cropping in sandy soil of southwestern Ontario." Canadian Journal of Soil Science 84, no. 2 (2004): 187–97. http://dx.doi.org/10.4141/s03-047.

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Abstract (sommario):

To assess the risk that liquid swine manure (LSM) application posed to groundwater quality and determine how to manage excess nitrates, LSM pre-plant injected at 75% (LSMlow) and >100% (LSMhigh) of corn (Zea mays L.) N requirements was compared to inorganic fertilizer (Fert), with (RC) or without (NC) a rye (Secale cereale L.) cover crop in 2 dry years (1999, 2001) and 1 wet year (2000) on sandy soil in Ontario. Corn yields in LSM and Fert treatments were comparable each year. When drainage potential was high, solution nitrates below the root zone in Fert (14 mg L-1) > LSM (7 mg L-1) in

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45

Wong, M. T. F., and K. Wittwer. "Positive charge discovered across Western Australian wheatbelt soils challenges key soil and nitrogen management assumptions." Soil Research 47, no. 1 (2009): 127. http://dx.doi.org/10.1071/sr08098.

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Abstract (sommario):

Nitrogen management in Western Australia (WA) and in cropping areas elsewhere in Australia assumes that soil contains negligible or no positive charge and is therefore unable to retain nitrate against leaching. The amount of water needed to displace nitrate is thus assumed to be the drainable volume of water held by the soil (1 pore volume), and in sandy soils about 100 mm drainage is assumed to be required to displace nitrate by 1 m. The clay mineralogy of the highly weathered soils of the WA wheatbelt is dominated by kaolinite and iron and aluminium oxides. This mineralogy suggests likely oc

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46

ERIKSEN, J. "Nitrate leaching and growth of cereal crops following cultivation of contrasting temporary grasslands." Journal of Agricultural Science 136, no. 3 (2001): 271–81. http://dx.doi.org/10.1017/s0021859601008802.

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Abstract (sommario):

Intensive dairy farming with low N use efficiencies may have adverse environmental impact through nitrate leaching. The residual effects of six different temporary grasslands (1994–96) on yield and nitrate leaching in the following cereal crops (1997–99) were investigated on a loamy sand in central Jutland. The grasslands were unfertilized grass–clover and fertilized ryegrass subject to cutting or continuous grazing by dairy cows with two levels of N in feed supplements. In the first year there was sufficient residual effect of the grazed grasslands to obviate the need for supplementary fertil

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47

El-Sadek, Alaa. "Modeling of Nitrate Leaching during the Fall–Winter Season in Artificially Drained Soils." Scientific World JOURNAL 2 (2002): 1006–16. http://dx.doi.org/10.1100/tsw.2002.204.

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Abstract (sommario):

The nitrogen processes that occur within the soil play a major role in determining the nitrate leaching to shallow groundwater. In this study, the transport and fate of nitrate within the soil profile were analyzed by comparing field data with the simulation results of a mathematical model. The objective was to study the transport and fate of nitrate within the soil profile and nitrate leaching to shallow groundwater for the fall-winter season, by applying the methodology in Elverdinge experiment, situated in the sandy loam region in Belgium, from October 1, 2000 to March 31, 2001. The analysi

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48

Beukes, Pierre, Alvaro Romera, Kathryn Hutchinson, et al. "Benefits and Trade-Offs of Dairy System Changes Aimed at Reducing Nitrate Leaching." Animals 9, no. 12 (2019): 1158. http://dx.doi.org/10.3390/ani9121158.

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Abstract (sommario):

Between 2011 and 2016, small-scale farm trials were run across three dairy regions of New Zealand (Waikato, Canterbury, Otago) to compare the performance of typical regional farm systems with farm systems implementing a combination of mitigation options most suitable to the region. The trials ran for at least three consecutive years with detailed recording of milk production and input costs. Nitrate leaching per hectare of the milking platform (where lactating cows are kept) was estimated using either measurements (suction cups), models, or soil mineral nitrogen measurements. Post-trial, detai

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49

Burkitt, Lucy L. "A review of nitrogen losses due to leaching and surface runoff under intensive pasture management in Australia." Soil Research 52, no. 7 (2014): 621. http://dx.doi.org/10.1071/sr13351.

Testo completo

Abstract (sommario):

This paper reviews the literature on nitrate leaching and nitrogen (N) runoff under intensive dairy pasture systems in Australia and draws comparisons with research undertaken under similar climates and farming systems internationally, with the aim to inform future research in this area. An Australian nitrate-leaching study suggests that annual nitrate-leaching loads are lower (3.7–14.5 kg N ha–1 year–1 for nil N and 6–22 kg N ha–1 year–1 for 200 kg N ha–1 applied) than the range previously measured and modelled on New Zealand dairy farms (~18–110 kg N ha–1 year–1). It is likely that nitrate-l

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50

Shams, Zohreh, Maryam Heidari, and Reza Mokhtari. "Residues, An Alternative for Reducing Water Contamination, Leaching, and Greenhouse Gas Emission." Agriprima : Journal of Applied Agricultural Sciences 7, no. 2 (2023): 154–61. http://dx.doi.org/10.25047/agriprima.v7i2.555.

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Abstract (sommario):

This study investigated the efficacy of grape residue in reducing water contamination. Our findings revealed significant reductions in nitrate leaching upon the application of grape residues. Smaller residue particle sizes recorded greater reductions in nitrate leaching compared to larger ones. Utilizing grape waste branches for biochar production offers a sustainable solution, improving water retention, organic matter content, and reducing nutrient leaching. Biochar not only enhances nutrient retention but also promotes microbial activity and nitrogen-fixing bacteria, benefiting soil health a

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