Silicon distribution and accumulation in shoot tissue of the tropical forage grass Brachiaria brizantha

Melo, Suzana Pereira de; Monteiro, Francisco Antônio; Bona, F. D. De

doi:10.1007/s11104-010-0472-5

Cited by 44 publications

(32 citation statements)

References 26 publications

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“…Si accumulation in tissues and cells is a prominent characteristic of plants from the Poaceae family (Melo et al 2010). Despite this element does not be considered essential to plants development, there are several benefits of its application in crops of this family, such as the Urochloa gender.…”

Section: Brachiaria Grass Growth and Nutritionmentioning

confidence: 99%

Nutrients release from powder phonolite mediated by bioweathering actions

Tavares

Carvalho

Camargo

et al. 2018

Int J Recycl Org Waste Agricult

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Purpose Silicate rock powders have been appointed as possible nutrient alternative sources which might enhance the agricultural sector sustainability. However, the application of those materials directly in soil presents as main limitations the low content and solubility of the mineral nutrient sources. In this perspective, the aim of the present study was to evaluate, in a bioweathering perspective, the conjunct application potential of phonolite with organic composts over the nutrients release in soil, as well as the production and nutrition of brachiaria grass (Urochloa decumbens). In addition, it was sought to assess the composting process effectiveness in improving the nutrient release from this rock. Method An experiment was conducted with five treatments (control; enriched compost with powder rock at 10%; mixed compost with powder rock at 10%; solely powder rock; solely compost) and four repetitions. Results The alternative sources positively influenced the productivity, as well as the K and Si contents at the aerial part of the brachiaria grass and the nutrient release in soil. However, the conjunct applications of powder phonolite with organic composts were the source which the best promoted the total nutrient biorelease to soil. Conclusion Nevertheless, there was no evidence that the composting process promotes the phonolite bioweathering. On the other hand, the conjunct application of powder phonolite with organic composts, either as an initial component to the composting pile or additive to the stabilized composts, is a strategy which enhances the nutrient biorelease of the mineral source.

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Section: Brachiaria Grass Growth and Nutritionmentioning

confidence: 99%

Nutrients release from powder phonolite mediated by bioweathering actions

Tavares

Carvalho

Camargo

et al. 2018

Int J Recycl Org Waste Agricult

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“…The genus includes important turf and forage grasses (Arrhenatheretea) [15,16] and cultivars as well as troublesome weeds and invaders [14,17]. Although primarily found in the temperate zone, Poa is a very widely distributed grass genus [18].…”

Section: Introductionmentioning

confidence: 99%

Quantifiable differences between phytolith assemblages detected at species level: analysis of the leaves of nine Poa species (Poaceae)

et al. 2015

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The taxonomic value of phytolith assemblages and their degree of variability within different species of the same genus is still an undervalued issue in the botanical range of phytolith studies. However the understanding of grass phytolith variance and its implications to plant systematics is doubtless.In the present study phytoliths of the lateral shoots (leaves) of nine, globally distributed Poa species (Pooideae -Poaceae) are described. Phytoliths were recovered from Poa specimens by the dry ashing technique. Altogether 6223 disarticulated phytoliths were counted (approximately 500-700 phytoliths per species) in 54 plant samples, which cover six shoots of nine species. Not only the relative frequency of each morphotype was calculated, but measurements were conducted to determine the biogenic silica content of Poa lateral shoots. A phytolith reference collection for the nine selected species of a worldwide importance was also compiled. The description of the most significant phytolith morphotypes and their taxonomic relationships are given here.Results suggest that the biogenic silica content of the Poa lateral shoots was determined to be relatively high within all nine species. Phytolith assemblage data was subjected to multivariate statistical analyses (e.g., CA and PCA) in order to find differences and similarities among the nine Poa species. Results show that the two closely related Poa of the P. pratensis species group, namely the P. pratensis and P. angustifolia, only slightly differ from the other Poa species if we consider their rondel-trapeziform short cells (SC) phytolith frequencies.

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“…Thus, accumulation of Si in bulliform cells apparently occurs as a result of the passive deposition of Si (Melo et al, 2010). Note.…”

Section: Resultsmentioning

confidence: 95%

“…Considering grasses for animal feeding, it is necessary to ensure that the Si content does not exceed levels that could affect the quality of the forage (Melo et al, 2010). In silage-free soil samples, the silica has not affected the grasses parameters (Faria et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

Physiological and Biochemical Alterations of Urocholoa brizantha Submitted to Water Deficit and Silicate Fertilization

Moro¹,

Pacheco²,

Moro³

2018

JAS

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The correction of soil acidity and the evaluation of the effects of correctives used are not frequent practices in pasture areas. The benefits of silicon on the physiology and biochemistry of pastures is a subject that has not been explored in great detail. The objective of this study was to evaluate the performance of Urochloa brizantha plants (cultivar Xaraés) submited to condictions of water deficity and silicate fertilization through physiological and biochemical parameters. The experiment was carried out in pots under greenhouse conditions..The experimental design was randomized blocks, in a 2 × 2 factorial arrangement, with eight replications. The treatments consisted of a combination of the presence and absence of silicon (by means of soil correction using agrosilicon and dolomitic limestone, to raise the base saturation to 50%) with 2 soil water conditions (40 and 80% of field capacity). The analyzes were performed to determine: net CO 2 assimilation rate, stomatal conductance, transpiration rate, water use efficiency, superoxide dismutase and catalase enzyme activities, shoot dry matter ,neutral detergent fiber and acid detergent fiber determinations and leave protein. The application of silicon in Urochloa brizantha cultivar Xaraés has the potential of attenuate the water deficity, increasing the photosynthesis, plant dry matter and antioxidant enzymes activity.

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Silicon distribution and accumulation in shoot tissue of the tropical forage grass Brachiaria brizantha

Cited by 44 publications

References 26 publications

Nutrients release from powder phonolite mediated by bioweathering actions

Nutrients release from powder phonolite mediated by bioweathering actions

Quantifiable differences between phytolith assemblages detected at species level: analysis of the leaves of nine Poa species (Poaceae)

Physiological and Biochemical Alterations of Urocholoa brizantha Submitted to Water Deficit and Silicate Fertilization

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