Mineralogy and nutrient desorption of suspended sediments during a storm event

Bortoluzzi, Édson Campanhola; Santos, Danilo Rheinheimer dos; Santanna, Maria Alice; Caner, Laurent

doi:10.1007/s11368-013-0692-4

Cited by 26 publications

(8 citation statements)

References 36 publications

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“…Erosion contributed most to K loss-over 90% for all treatments; K dissolved in runoff comprised less than 10% of the total across all treatments. Bertoluzzi et al (2013) observed that the composition of suspended sediment differed significantly from that of the soil from which it was lost. During a 39-mm rainfall event with a peak intensity of 3.25 mm min À1 , they sampled suspended solids from a stream monitoring point at the outlet of a 36-farm, 480 ha watershed in the Rio Grande do Sul State in southern Brazil.…”

Section: Water Erosionmentioning

confidence: 99%

“…Potassium, defined as "labile K," was lost in both phases. Bertoluzzi et al (2013) defined labile K as the quantity of K in the soil solution plus the quantity of K most readily desorbed into solution from particle surfaces (i.e., the most soluble K in soil). To quantify labile K, they extracted K from soil with a cation/anion exchange resin for 16 h and then measured the K adsorbed to the resin.…”

Section: Water Erosionmentioning

confidence: 99%

“…Composition of sediment lost from a 480-ha watershed during a single rainfall event totaling 39 mm with a peak intensity of 3.25 mm min À1 (Bertoluzzi et al 2013). …”

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confidence: 99%

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Outputs: Potassium Losses from Agricultural Systems

Goulding

Murrell

Mikkelsen

et al. 2020

Improving Potassium Recommendations for Agricultural Crops

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Potassium (K) outputs comprise removals in harvested crops and losses via a number of pathways. No specific environmental issues arise from K losses to the wider environment, and so they have received little attention. Nevertheless, K is very soluble and so can be leached to depth or to surface waters. Also, because K is bound to clays and organic materials, and adsorbed K is mostly associated with fine soil particles, it can be eroded with particulate material in runoff water and by strong winds. It can also be lost when crop residues are burned in the open. Losses represent a potential economic cost to farmers and reduce soil nutritional status for plant growth. The pathways of loss and their relative importance can be related to: (a) the general characteristics of the agricultural ecosystem (tropical or temperate regions, cropping or grazing, tillage management, interactions with other nutrients such as nitrogen); (b) the specific characteristics of the agricultural ecosystem such as soil mineralogy, texture, initial soil K status, sources of K applied (organic, inorganic), and rates and timing of fertilizer applications. This chapter provides an overview of the main factors affecting K removals in crops and losses through runoff, leaching, erosion, and open burning.

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Section: Water Erosionmentioning

confidence: 99%

Section: Water Erosionmentioning

confidence: 99%

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Outputs: Potassium Losses from Agricultural Systems

Goulding

Murrell

Mikkelsen

et al. 2020

Improving Potassium Recommendations for Agricultural Crops

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“…In addition, when plant nutrition is the only consideration, K can be applied before each crop to provide appropriate amounts of K and high exchangeable K, regardless of the soil K status. However, when K fertilization reaches a K surplus due to the clay mineral buffer capacity, exchangeable K favors K leaching, as verified in agricultural lands by Bortoluzzi et al (2013). The challenge for adequate K fertilization is to know the K soil buffer capacity, including the clay soil mineralogy composition (Rao et al, 2000; Rev Bras Cienc Solo 2019;43:e0180166 Castilhos and Meurer, 2002;Bortoluzzi et al, 2005Bortoluzzi et al, , 2008Britzke et al, 2012).…”

Section: K Dynamics Following K Application and Crop Cultivationmentioning

confidence: 99%

Does Ferralsol Clay Mineralogy Maintain Potassium Long-Term Supply to Plants?

Moterle

Bortoluzzi

Kaminski

et al. 2019

Rev. Bras. Ciênc. Solo

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Ferralsols (Latossolos) should contain few or no 2:1 clay minerals and have low potassium (K) contents, and consequently low levels of non-exchangeable K forms are expected. The aim of this study was to evaluate how the clay mineralogy of a Ferralsol affects the soil K dynamics in response to K fertilization during cropping and whether the clay mineralogy was altered due to successive crops and K fertilization. A tropical Brazilian Ferralsol under field conditions was sampled (0.00-0.20 m) in contrasting K fertilization plots: no K application (control plot) and 3,200 kg ha-1 applied K 2 O fertilizer. These two treatments were submitted at eight different crop cycles, performed in pots under greenhouse conditions, and fertilized with 0, 30, and 90 mg kg-1 K 2 O before each crop cycle. The biomass K, exchangeable K, non-exchangeable K, and structural K contents were determined after each crop cycle. At the end of the experiment, the presence of 2:1 clay minerals with hydroxy-aluminum interlayered in the soil clay fraction was verified, which ensured K adsorption in a form available to plants when K fertilizer was added. Cropping without K fertilization resulted in limited crop yields and exhausted the exchangeable and non-exchangeable K soil reserves. The previous K fertilization history influenced the soil K reserve and its availability to plants in the Ferralsol studied. The crops without K addition decreased the proportion of 2:1 hydroxy-Al interlayer minerals in the soil in relation to the kaolinite clay minerals.

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“…The soil pH in water ranged from 5.1 to 6.1. In the soil clay fraction, 2:1 clay minerals are predominant; however, illite and kaolinite are present in lower amounts (Bortoluzzi et al, 2013). The main soil types in the watershed are Chernozem, Regosol, and Arenosol (WRB, 2014), which are classified as Chernossolo Argilúvico férrico, Neossolo Litólico eutrófico, and Neossolo Quartzarênico órtico, respectively, accordingly to the Brazilian System of Soil Classification .…”

Section: Site Descriptionmentioning

confidence: 99%

Phosphorus Forms in Sediments as Indicators of Anthropic Pressures in an Agricultural Catchment in Southern Brazil

Tiecher

Schenato

Santanna

et al. 2017

Rev. Bras. Ciênc. Solo

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Phosphorus (P) fractionation is a suitable procedure to ascertain P lability in sediments and is able to distinguish sources of P under different soil management practices in a catchment. Brazil is the second largest producer and the largest exporter of tobacco in the world. Inadequate management of cultivated areas exposes the soil to erosion processes, accelerating the transfer of sediment and P to water bodies, which leads to eutrophication. We evaluated the P forms in suspended sediments collected at two rainfall events in the stream of a small catchment in the state of Rio Grande do Sul. The samples were collected upstream and downstream areas in three sub-catchments with different degrees of anthropogenic pressure and in three phases of the hydrograph in the catchment outlet. The first rainfall event occurred during the fallow period, and the second one, during the period of transplanting the tobacco crop. The sediment P forms were evaluated by successive extractions, following the Hedley method. The results showed that an increase in anthropogenic pressure leads to an increase in total inorganic P and a decrease in the levels of organic C and total organic P in sediments. In the control area, the quantity and quality of the eroded material remained the same in both rainfall events. The levels of total P in sediment alone were not sufficient to evaluate the influence of the soil management practices prevalent in each sampling period. However, P fractionation shows that during the tobacco transplanting period, P in sediments was mainly in labile fractions, and rainfall during this period was more likely to promote the eutrophication process. Sediments carried in runoff during the tobacco transplanting period have larger amounts of available P than those borne during rainfall in the fallow period.

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Mineralogy and nutrient desorption of suspended sediments during a storm event

Cited by 26 publications

References 36 publications

Outputs: Potassium Losses from Agricultural Systems

Outputs: Potassium Losses from Agricultural Systems

Does Ferralsol Clay Mineralogy Maintain Potassium Long-Term Supply to Plants?

Phosphorus Forms in Sediments as Indicators of Anthropic Pressures in an Agricultural Catchment in Southern Brazil

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