Iron oxides and quality of organic matter in sugarcane harvesting systems

Barbieri, Diogo Mazza; Júnior, José Marques; Siqueira, Diego Silva; Teixeira, Daniel De Bortoli; Panosso, Alan Rodrigo; Pereira, Gener Tadeu; Scala, Newton La

doi:10.1590/s0100-06832014000400010

Cited by 10 publications

(3 citation statements)

References 37 publications

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“…(9-21 nm) peaks lower than Hm111 (12-25 nm) and Hm012 (30-89 nm) peaks revealed the persistence of the crystalline Hm in relation to Gt, a common characteristic in tropical soils (Inda Júnior and Kämpf, 2005;Barbieri et al, 2014) clearly observed in the transport foothill, where peaks referring to the face of Hm012 are well-defined and narrow (Figure 4). The climatic conditions of the Amazon, especially precipitation and temperature, combined with the natural increase of OM, acid pH (Table 2), and intense microbial activity, contribute to a higher presence of Al in the goethite structure, which decreases its crystallinity.…”

Section: Mineralogical Attributesmentioning

confidence: 92%

Soil-landscape relationship in sandstone-gneiss topolithosequence in Amazonas, Brazil

Fonseca

Campos

Filho

et al. 2019

Preprint

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Abstract. Soil position in the landscape reveals its history of formation and genesis. Therefore, the landscape is the combination of features of the surface of the earth with subsurface components (parent material), while the soil is a three-dimensional, dynamic natural body inserted in the landscape. This research aimed to study the soil-landscape relationship in a sandstone-gneiss topolithosequence in Amazonas, Brazil. The study was carried out along a 9.253-meter transect from the top downwards the softer slope. Soil profiles were selected in five landscape compartments (top, upper third, lower third, transport foothill, and deposition foothill). Morphological, mineralogical, physical, chemical, and ray diffraction characterizations were performed. Soils had different morphological, physical, chemical, and mineralogical attributes due to the variations of the geological substrate and landscape position. The mineralogy of the clay fraction is composed of kaolinite, goethite, hematite, and gibbsite, with goethite being the predominant iron oxide. A sand fraction dominance was observed in relation to the other fractions in all the profiles, being related to the alluvial nature of the parent material, with the highest values occurring in the lower third. The separation of the landscape into geomorphic surfaces and identification of the parent material were effective for understanding the variation of soil attributes along the landscape.

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Section: Mineralogical Attributesmentioning

confidence: 92%

Soil-landscape relationship in sandstone-gneiss topolithosequence in Amazonas, Brazil

Fonseca

Campos

Filho

et al. 2019

Preprint

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“…The absorption of P by plants is directly related to its availability, which in turn is influenced by texture, fertilizer dose and by the time of contact with the soil (Vieira et al, 2015). For their part, Oliveira et al (2014) and Barbieri et al (2013) highlights n that the higher the clay content in the soil, the higher the adsorption of the P and lower availability. Contact d the P in the solution of the soil with the root is performed almost exclusively by diffusion process in which the element translocate short distances in a stationary aqueous phase, called solution soil, for the concentration gradient.…”

Section: Introductionmentioning

confidence: 99%

Phosphated fertilization with organic and inorganic amendments in corn crops (Zea mays L.)

Duarte-Monzón

González-Caceres

Rasche-Alvarez

et al. 2020

rcia

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The limited availability of phosphorus in most soils in the eastern region of Paraguay restricts the productivity of the chipa corn, where fertilization with phosphates soluble could be one of the alternatives to make up the shortfall nutritional of cultivation. In addition, the combination with amendments makes the use of inorganic fertilizers more efficient in this production system. The work was carried out in the town of Ybyrarobana, Canindeyú, with the aim of to evaluate the effects of phosphorus doses, in combination with organic and inorganic amendments, on corn production. The treatments were distributed in split-plots under a randomized complete block design with 4 blocks. The amendments (bovine manure and ash) and the control occupied the main plots and the doses of P2 O5 (0, 40, 80, 120 and 160kg ha-1) the subplots. Variables such as post-harvest soil fertility, crop growth and yield were determined. The data were subjected to ANOVA and pair-wise comparisons by the Tukey´s test with 5% of probability. Except for the spike length, the evaluated variables showed significant differences between the amendments used. However, there were no statistical differences among doses of P2O5. The application of bovine manure and soybean expeller ash increased the pH and exchangeable potassium, and decreased exchangeable aluminum, while the levels of calcium, magnesium and phosphorus were not influenced.

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“…Several investigations have shown that goethite (Gt = α-FeOOH) and gibbsite (Gb = γ-Al(OH) 3 ) rich soils provide higher P-fixing power than hematite-governed soils (Hm = α-Fe 2 O 3 ) and, secondarily, kaolinite (Kt) (Broggi, Oliveira, F. J. Freire, M. B. G. S. Freire, & Nascimento, 2011;Barbieri et al, 2014). In a pioneer study developed in the Brazilian Cerrado, Novais and Smyth (1999) found in clayey Latosols more than 2 mg cm -3 of adsorbed P, which is equivalent to 4000 kg ha -1 of P, that is, 9.200 kg ha -1 of P 2 O 5 , incorporated at 0-20 cm.…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and Maximum Phosphorus Adsorption Capacity in Soybean Development

Oliveira¹,

Silva²,

Souza³

et al. 2018

JAS

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The low natural fertility of tropical soils and the mineralogy almost dominated by iron and aluminum oxides limit the availability of phosphorus (P) to the plants, causing negative impacts on soybean yield. Objective was to evaluate the effect of phosphate fertilization on soils with different maximum phosphorus adsorption capacities (PAC) in soybean development. The experiment was carried out under greenhouse conditions, using Red-yellow Latosol (RYL) and a Typic Hapludalf (TH) soil as substrate. The analyses were performed by a completely randomized experimental design in a 5 × 2 factorial arrangement with three replications. The treatments consisted of 5 doses of P applied, corresponding to 0, 1, 6, 12, and 24% of PAC of each soil. In the soil, the mineralogy of the clay fraction (hematite, goethite, gibbsite and kaolinite) and crystallographic attributes were characterized. In the plant, we evaluated growth and pod production. The PAC of the soils ranged from 220 to 650 mg dm -3 with higher value in the RYL associated to clayey oxidic mineralogy and texture in relation to the TH of kaolinite origin and sandy texture, where the higher energy of adsorption observed was to TH. Phosphorus application from 16 to 21% of PAC, independently of the soil, promotes the same pattern of response with improvements in soybean development evidenced by increases in P content in plant tissue, plant height, root volume and aerial dry mass.

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Iron oxides and quality of organic matter in sugarcane harvesting systems

Cited by 10 publications

References 37 publications

Soil-landscape relationship in sandstone-gneiss topolithosequence in Amazonas, Brazil

Soil-landscape relationship in sandstone-gneiss topolithosequence in Amazonas, Brazil

Phosphated fertilization with organic and inorganic amendments in corn crops (Zea mays L.)

Mineralogy and Maximum Phosphorus Adsorption Capacity in Soybean Development

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