2012
DOI: 10.1590/s0100-06832012000300025
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Abstract: summarY the expansion of Brazilian agriculture has led to a heavy dependence on imported fertilizers to ensure the supply of the growing food demand. this fact has contributed to a growing interest in alternative nutrient sources, such as ground silicate rocks. it is necessary, however, to know the potential of nutrient release and changes these materials can cause in soils. the purpose of this study was to characterize six silicate rocks and evaluate their effects on the chemical properties of treated soil, a… Show more

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Cited by 37 publications
(38 citation statements)
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References 15 publications
(7 reference statements)
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“…These results were similar to those obtained by Silva et al (2012) testing the incubation of various types of rock powders with Yellow Latosol soil material from the 0-20 cm layer over 100 days. They found that ultramafic rock powder led to an increase in available Ca 2+ , Mg 2+ and K + concentrations in the soil.…”
Section: Resultssupporting
confidence: 87%
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“…These results were similar to those obtained by Silva et al (2012) testing the incubation of various types of rock powders with Yellow Latosol soil material from the 0-20 cm layer over 100 days. They found that ultramafic rock powder led to an increase in available Ca 2+ , Mg 2+ and K + concentrations in the soil.…”
Section: Resultssupporting
confidence: 87%
“…Silva et al (2012) observed that an ultramafic rock (with mineralogical composition similar to basalt) provided an increase in pH proportional to the quantity of powder applied. In the present study, no effect of application rate was verified in any of the soils.…”
Section: Resultsmentioning
confidence: 99%
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“…Despite its slow dissolution, ornamental rock residue may also contribute as a source of nutrients to plants (Silva et al, 2012). This slow, gradual release may be in tune with crop demand, particularly long-cycle crops, thereby reducing K losses via leaching in the soil, as occurs when the element is provided through readily soluble fertilizers.…”
Section: Resultsmentioning
confidence: 99%
“…Nepheline syenite is a rock composed mainly of microcline, orthoclase, 554 Ciênc. Agrotec., Lavras, v. 39, n. 6, p. 553-564, nov./dez., 2015 andesine and nepheline; it has approximately 9% of K 2 O (Andrade et al, 2005), and the modified glauconite is a rock of metasedimentary origin which has a K 2 O content ranging from 6 to 14%, showing the agronomic value of this rock to fertilize crop fields (Piza et al, 2011;Silva et al, 2012a;Silva et al, 2012b). Its mineralogy encloses glauconite, recrystallized quartz, light brown clay matrix, kaolinite and micas, such as muscovite, biotite and chlorite (Silva et al, 2012b).…”
Section: Introductionmentioning
confidence: 99%