Phosphorus losses in water and sediments in runoff of the water erosion in oat and vetch crops seed in contour and downhill

Barbosa, Fabrício Tondello; Bertol, Ildegardis; Luciano, Rodrigo Vieira; González, Antônio Paz

doi:10.1016/j.still.2009.09.004

Cited by 48 publications

(46 citation statements)

References 19 publications

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“…This confirms that, in effect, NT is not fully a soil conservation system. The sediments resulting from the erosion of this management system are richer in chemical species than CT, as verified by Bertol et al (2007a), Barbosa et al (2009), and Dantas and Monteiro (2010). In the topsoil, the ratio between the contents of Ca and Mg was 2:1, whereas in the sediments from erosion, that ratio was 1.9:1 on average in the treatments and seasons.…”

Section: Resultsmentioning

confidence: 82%

“…The more soil conservationist tillage system is, the more pronounced the selectivity of erosion, because in such systems, these sediments carried by the runoff are mostly colloidal, with higher capacity for adsorption of chemical species than non-colloidal sediments, as demonstrated by Lewis and Wurtsbaugh (2008) and Barbosa et al (2009). Thus, NT, for example, presents a potential pollutant of the environment, considering the ratio between the contents of chemical species existing in the soil and the content existing in the sediments and water of erosion.…”

Section: Total Losses Of P K Ca Mg and Organic Matter (Om) And Thmentioning

confidence: 99%

“…The effectiveness of the NT system in controlling the loss of plant nutrients and organic matter is unsatisfactory, due to their high contents present in the runoff water and in the eroded sediments (Barbosa et al, 2009). Phosphorus constitutes a source of contamination outside the place of origin of erosion, causing eutrophication of waters (Sharpley et al, 2001;Hart et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…The ER in nutrients, particularly P, is an indicator of the contamination potential erosion has in the environments of erosion deposition. Despite this importance, very few studies have been conducted in Brazil with a view to determining the ER of nutrients in agricultural areas (Barbosa et al, 2009 There is a positive linear correlation between the P, K, and organic C contents contained in the eroded sediments and the contents existing in the 0.00-0.02 m layer of soil at the erosion site, thus establishing ER (Schick et al, 2000). The reasons for this type of ratio, according to these authors, are based on the fact that the nutrients and organic matter, concentrated on the soil surface in NT, are easily transported by the runoff, since erosion is selective (Langdale et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

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Nutrient and Organic Carbon Losses, Enrichment Rate, and Cost of Water Erosion

Bertol

Luciano

Bertól

et al. 2017

Rev. Bras. Ciênc. Solo

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Soil erosion from water causes loss of nutrients and organic carbon, enriches the environment outside the erosion site, and results in costs. The no-tillage system generates increased nutrient and C content in the topsoil and, although it controls erosion, it can produce a more enriched runoff than in the conventional tillage system. This study was conducted in a Humic Cambisol in natural rainfall from 1997 to 2012 to quantify the contents and total losses of nutrients and organic C in soil runoff, and to calculate the enrichment rates and the cost of these losses. The treatments evaluated were: a) soil with a crop, consisting of conventional tillage with one plowing + two harrowings (CT), minimum tillage with one chisel plowing + one harrowing (MT), and no tillage (NT); and b) bare soil: one plowing + two harrowings (BS). In CT, MT, and NT, black oat, soybean, vetch, corn, turnip, and black beans were cultivated. Over the 15 years, 15. were used in the soil. The P, K, Ca, Mg, and organic C contents in the soil were determined and also the P, K, Ca, and Mg sediments in the runoff water. From these contents, the total losses, the enrichment rates (ER), and financial losses were calculated. The NT increased the P, K, and organic C contents in the topsoil. The nutrients and organic C content in the runoff from NT was greater than from CT, showing that NT was not a fully conservationist practice for soil. The linear model y = a + bx fit the data within the level of significance (p≤0.01) when the values of P, K, and organic C in the sediments from erosion were related to those values in the soil surface layer. The nutrient and organic C contents were higher in the sediments from erosion than in the soil where the erosion originated, generating values of ER>1 for P, K, and organic C. The value of the total losses of nutrients in the form of triple superphosphate fertilizer, potassium chloride, and urea and limestone by water erosion was higher in CT than in NT. For triple superphosphate, the cost of erosion losses was 29 % higher in NT than in CT, while in urea and limestone, the effectiveness of NT in reducing costs was 65 and 50 %, respectively.

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Section: Resultsmentioning

confidence: 82%

Section: Total Losses Of P K Ca Mg and Organic Matter (Om) And Thmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nutrient and Organic Carbon Losses, Enrichment Rate, and Cost of Water Erosion

Bertol

Luciano

Bertól

et al. 2017

Rev. Bras. Ciênc. Solo

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“…Values of the coefficients were determined on the basis of an integrated analysis of literature sources [1][2][3][4] and the IEEP experimental data and were further used to calculate the nutrient load from farmland in the North-West Russia (Table 1). To determine the basic coefficients, which define the share of nitrogen and phosphorus leaching, the characteristics of sod-podzolic soils were taken as the basis because they are the most common type on the studied areas.…”

Section: The Ieepagrdlm Modelmentioning

confidence: 99%

Comparison of phosphorus leaching on different soils to tuning IEEPAgrDLM model

Subbotin

Брюханов

Ogluzdin

2018

Engineering for Rural Development

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Abstract. Laboratory study of phosphorus leaching from the plow horizon was conducted. The purpose of the study is to examine and compare the values of leaching phosphorus mass from the plow horizon in order to obtain the values of the coefficients for the IEEPAgrDLM model (Agricultural Diffuse Load Model by IEEPthe Institute for Engineering and Environmental Problems). The IEEPAgrDLM model allows to calculate the diffuse load on water bodies from agricultural fields depending on the field area, field soil nutrient content, type of soil by mechanical composition, doses of mineral and organic fertilizers, structure of crop rotation and distance from the field to the nearest water body. The influence of soil factors was studied. In the experiment 4 types of soil of different mechanical composition were used. Triplicate repeatability was used -for each type of soil, three vessels were used. The laboratory installation was a rack with vessels filled with soil. The vessels have a cover for introduction of water at the top and the filter element, bung with a glass tube and stopper at the bottom. During the study, once every two weeks, water was poured into the vessels and water which passed through the soil was taken. The volumes of water passed through the soil were measured and the concentrations of phosphorus and nitrogen in the water were analyzed. Based on the results of a six-month experiment (from April to October 2017), the values of the masses of nitrogen and phosphorus washed from the vessels were obtained. In this article, the results of the experiment on phosphorus are considered. The processing of laboratory data made it possible to calculate the coefficients reflecting the dependence of the mass of phosphorus leaching on the type of soils, which were used to update the coefficient values of the IEEPAgrDLM model. Keywords: phosphorus, soil, modelling, water protect, phosphorus leaching. IntroductionThe topic of water protection is currently very relevant. And there is a need for practical tools to assess the negative impact on water bodies at the farm level. One such tool is the IEEPAgrDLM model. This model (Agricultural Diffuse Load Model by IEEP -the Institute for Engineering and Environmental Problems) allows to calculate the diffuse load on water bodies from agricultural fields. This model was created on the basis of theoretical studies and initially its coefficients were obtained on the basis of literary sources. The goal of this study was to investigate the properties of the four most common soils in the Leningrad Oblast region in order to refine the corresponding coefficients of the model, which will improve the model's accuracy for the Leningrad Oblast region. Leningrad region is an area of the most intensive livestock production in the Russian part of the Baltic Sea region. The soil samples used in the experiment were taken from the arable horizon of actively used crop fields.

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Controllability of Phosphorus Losses in Surface Runoff from Sloping Farmland Treated by Agricultural Practices

et al. 2017

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Phosphorus (P) loss from arable sloping land due to water erosion causes off‐site environment pollution in the Three Gorges area in China. This study aims to estimate the effects of agricultural practices on the reduction of P losses during water erosion processes under natural precipitation conditions: contour culturing with organic matter addition (CT + OM), contour culturing with wheat straw mulching (CT + SM), contour culturing with straw mulching and organic matter addition (CT + OM + SM) and conventional downslope culturing framework as a control (CK). Results demonstrated that CT + OM + SM could viably diminish runoff, sediment yields and P losses from arable sloping land. Compared with CK, CT + OM, CT + SM and CT + OM + SM lessened the surface runoff depths by 19%, 34% and 50%, respectively. A high curve number value induced a notable runoff potential from the plot. The surface‐runoff‐related total P (TP) loads for CK with yearly measures of 1·56 kg ha−1 were significantly higher than those for CT + OM, CT + SM and CT + OM + SM at 1·07, 0·77 and 0·51 kg ha−1 (p < 0·05), respectively. With all things considered, the particulate P losses represented a significant division of TP losses, adding up to almost 80% in 2014 and 79% in 2015. The outcomes demonstrated that surface protection and organic matter addition are two of the greatest agricultural protection practices that lessen P losses in the surface runoff from sloping farmland by water erosion. Copyright © 2017 John Wiley & Sons, Ltd.

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Phosphorus losses in water and sediments in runoff of the water erosion in oat and vetch crops seed in contour and downhill

Cited by 48 publications

References 19 publications

Nutrient and Organic Carbon Losses, Enrichment Rate, and Cost of Water Erosion

Nutrient and Organic Carbon Losses, Enrichment Rate, and Cost of Water Erosion

Comparison of phosphorus leaching on different soils to tuning IEEPAgrDLM model

Controllability of Phosphorus Losses in Surface Runoff from Sloping Farmland Treated by Agricultural Practices

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