Disponibilidade de nutrientes em vertissolo calcário

Moreira, Adônis; Franchini, J. C.; Moraes, L. A. C.; Malavolta, E.

doi:10.1590/s0100-204x2000001000024

Cited by 11 publications

(10 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These conditions widely interfere with the ion adsorption and solubilization processes, which are responsible for the concentration of nutrients in the soil solution (Moreira et al, 2000). P precipitation, with the formation of calcium phosphate, is one of the reasons for the reduction of this element in the soil solution.…”

Section: Resultsmentioning

confidence: 99%

Chemical attributes of a degraded soil after application of water treatment sludges

Silva

Melo

Teixeira

2005

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Mining is an activity that tends to degrade the environment. The restoration of mining areas, aims to accelerate and improve the succession process according to its future use. The objective of this work was to rehabilitate a soil degraded by tin mining activities in the Amazon Basin (Jamari National Forest, State of Rondônia) with the application of water treatment sludge (WTS), and verify the effect of sludge on values of pH (CaCl 2 0.01 mol L -1 ), organic matter, P, Ca, Mg, K, H+Al, and soil micronutrient contents when cultivated with native plants, legumes, and grass species. A factorial (3 × 5) experimental design was used to optimize the rehabilitation of these areas including three N rates (100, 200, and 300 mg N kg -1 soil supplied by WTS), five plant species (grasses, legumes, and native plants), and two controls (degraded soil with no fertilizer and degraded soil fertilized with mineral fertilizers), with four replications. WTS increased pH values. The chemical products used to treat the water contributed, in greater extension, to increase soil Ca and Fe contents. The use of WTS as fertilizer proved viable, since it contains nutrients for plants; however, nitrogen should not be used as a criterion to define the rate of sludge application, because it is present at small amounts in the WTS.

show abstract

Section: Resultsmentioning

confidence: 99%

Chemical attributes of a degraded soil after application of water treatment sludges

Silva

Melo

Teixeira

2005

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

show abstract

“…Certamente um dos elementos que contribuem na instabilidade na área da dfv diz respeito às peculiaridades químicas dos solos carbonáticos. Entre elas está a diminuição da disponibilidade de alguns micronutrientes (MOREIRA et al, 2000). O excesso de cálcio pode aumentar a precipitação de fósforo, diminuindo sua disponibilidade para as plantas, além de inibir a absorção de alguns micronutrientes (MOREIRA et al, 2000), difi cultando o estabelecimento e a regeneração da vegetação.…”

Section: Discussionunclassified

Solos Carbonáticos E a Desertificação No Médio Curso Da Bacia Do Rio Salitre, Bahia

Rios

Carvalho

Oliveira

2020

Rev. Bras. Geomorfol.

View full text Add to dashboard Cite

das terras, na qual a deterioração persistente dos solos e a destruição das caatingas constituem expressões marcantes. Condicionantes locais, como a crescente exposição de solos, pode constituir fator que amplia os riscos de desertificação. Este estudo analisou as relações entre os solos carbonáticose uma possível desertificação em curso na bacia do rio Salitre, no semiárido seco da Bahia. O estudo foi realizado tendo como recorte os dois compartimentos de relevo que caracterizam a área de estudo, denominados platô carbonático e depressão de fundo de vale. Foram utilizadas técnicas de sensoriamento remoto para delimitação temporal da exposição dos solos, comparando os anos de 1950 e 2019. A distribuição da cobertura pedológica numa vertente perpassando os dois compartimentos foi analisada para dimensionar a organização morfológica dos solos, que também foram caracterizados em laboratório a partir de suas propriedades físicas e químicas (com destaque para o conteúdo de carbonato de cálcio equivalente). Os resultados apontaram que na área do platô carbonático há maior cobertura vegetal e os solos são, do ponto de vista pedogenético, mais evoluídos, mais estáveis e mais resistentes à erosão. Já na depressão de fundo de vale, há quase 70% de solo exposto (crescente nas últimas décadas) sobre condições morfogenéticas bastante instáveis, com forte remoção do solum e sobre materiais altamente friáveis, de elevada alcalinidade e teores de carbonato de cálcio equivalente que superam 500 g kg-1. Estas condições trazem implicações que dificultam a recuperação das caatingas na área da depressão, revelando uma persistente e evolutiva exposição dos solos, que sugere um quadro de alto risco de desertificação.

show abstract

“…Apodi Plateau, Mota et al (2007) found quartz, goethite, hematite, and magnetite. In a Cambissolo Háplico (Inceptisol), Moreira et al (2000) detected quartz, orthoclase, pyroxene, ilmenite, and small amounts of kaolinite, hematite, and goethite. Calcite was not found in these two studies.…”

Section: Chemical Propertiesmentioning

confidence: 99%

“…According to the Brazilian Soil Classification System -SiBCS (Santos et al, 2013), the main diagnostic feature in soils on karstic landscapes are carbonate or hypocarbonate properties, and calcic and petrocalcic diagnostic horizons. In these horizons, carbonate accumulation influences chemical characteristics such as pH, soil buffering, cation exchange capacity (CEC), and nutrient availability to plants (Moreira et al, 2000;Khresat, 2001). In addition, morphological characteristics such as continuous cementation may occur as the process of calcification advances.…”

Section: Introductionmentioning

confidence: 99%

Genesis and Classification of Soils Containing Carbonate on the Apodi Plateau, Brazil

Ferreira

Anjos

Pereira

et al. 2016

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

ABSTRACT:Information is scarce on the genesis and classification of soils derived from calcareous rocks in the Northeastern region of Brazil. This study describes the morphological, physical, chemical, mineralogical, and micromorphological properties of four soil profiles (P1-P4) located in the Apodi Plateau. A pedogenesis hypothesis and soil classification, according to the Brazilian System of Soil Classification (SiBCS), are proposed for these profiles. The interactions between parent material, surface topography and climate affected the pedogenesis processes and soil properties, although the calcareous nature of the parent material most affected the soil morphology and chemical properties. The sand fraction contained mainly quartz and calcite, and a smaller amount of mica. Smectite and interstratified illite-smectite occurred in the clay fraction of profile P1 and in some horizons of P2 (Ccmќ and Ccrќ) and P3 (2Ccrќ). Kaolinite predominated in profiles P2, P3, and P4; where as illite and vermiculite were present in the Bicќ, Bcќ, Bcmќ horizons of P2, in Bt2c of P3, and in C of P4. The mineralogy showed illite, hematite, and goethite, and anatase in a number of horizons. Micromorphological analysis of P2 indicated a strong cementation of Bcmќ and Ccmќ by calcium carbonate, and other properties indicate the formation of a petrocalcic horizon, but this horizon lacked lateral continuity in the profile. Therefore, the parapetrocalcic term is proposed for classifying P2 in the fourth level of the SiBCS. The 3Biќ-P1 horizon exhibited calcite coating and iron coating or quasi-coating, indicating distinct pedogenesis processes occurring under different environmental conditions. Likewise, the occurrence of petroplinthite in P2 indicates that climatic conditions during its formation differed from present conditions, and both situations are interpreted as evidence that the soils were formed by polygenetic processes. In the SiBCS classification, the soils are classified as Cambissolo Háplico Carbonático vertissólico (P1), Cambissolo Háplico Carbonático concrecionário (P2), Luvissolo Crômico Pálico petroplíntico (P3), and Neossolo Litólico Carbonatico típico (P4); and a new class (parapetrocálcico concrecionário) is proposed for P2 in the fourth level.

show abstract

Disponibilidade de nutrientes em vertissolo calcário

Cited by 11 publications

References 8 publications

Chemical attributes of a degraded soil after application of water treatment sludges

Chemical attributes of a degraded soil after application of water treatment sludges

Solos Carbonáticos E a Desertificação No Médio Curso Da Bacia Do Rio Salitre, Bahia

Genesis and Classification of Soils Containing Carbonate on the Apodi Plateau, Brazil

Contact Info

Product

Resources

About