Effects of silicon (Si) fertilization on gas exchange and production in Brachiaria

Sarto, Marcos Vinícius Mansano; Lana, Maria do Carmo; Rampim, Leandro; Rosset, Jean Sérgio; Inagaki, Adriano Mitio; Bassegio, Doglas

doi:10.21475/ajcs.2016.10.03.p6864

Cited by 15 publications

(12 citation statements)

References 41 publications

(29 reference statements)

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“…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. Sarto et al (2016) verified that the brachiaria fertilization with Si positively influenced the efficiency in the water use and the CO 2 assimilation rate of the crop, highlighting the relevance of the soil fertilization with this element.…”

Section: Brachiaria Grass Growth and Nutritionmentioning

confidence: 60%

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: 60%

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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“…Water stress also affects many important biochemical processes such as osmotic adjustment, antioxidant enzyme defense system, abscisic acid production, and lipid peroxidation. There are, however, morphological, physiological, and biochemical processes able to confer drought resistance (Mitra, 2001;Sarto et al, 2016). The increase in Si in the plant can increase the efficiency of water use by some grasses (Sarto et al, 2012, Sarto et al, 2015, Sarto et al, 2016.…”

Section: The Phenological Stages Of Wheatmentioning

confidence: 99%

“…There are, however, morphological, physiological, and biochemical processes able to confer drought resistance (Mitra, 2001;Sarto et al, 2016). The increase in Si in the plant can increase the efficiency of water use by some grasses (Sarto et al, 2012, Sarto et al, 2015, Sarto et al, 2016. Most cultivated plants are sensitive to water stress, particularly during the flowering and seed development stages; reduction in productivity can be seen as a result of this condition (Slatyer, 1969).…”

Section: The Phenological Stages Of Wheatmentioning

confidence: 99%

Wheat phenology and yield under drought: A review

Sarto¹,

Sarto²,

Rampim³

et al. 2017

Aust J Crop Sci

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The purpose of this review was to characterize the wheat crop phenology under drought conditions, at different stages of crop growth. Effects of drought on wheat plants are variable, and depend on the phenological stage of the plant as well as the duration, intensity and frequency of the drought. The crop evapotranspiration increases over the course of the phenological cycle, reaching a maximum in the growth stage (from the beginning of heading until the end of flowering), which is the most sensitive stage of the crop to drought. At ripening, the evapotranspiration decreases to save and allocate the energy to grain yield. The drought affects the plant density in the initial phase, tiller number per plant in the tillering phase, and plant height in the stretching phase, most severely. At the flowering stage, the processes related to fertilization and fixation of grain are most severely affected, i.e., the number of viable seeds per area decreases. In the grain formation stage, the ability of the source (leaf) to use and translocate the assimilates to the grain is most severely affected, thus affecting the grain weight.

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“…The accumulation of Si favors the formation of a double layer of cuticular silica, reducing transpiration and lowering the plants water requirement, increasing the efficiency in the use of water and the photosynthetic rate (Nwugo & Huerta, 2008). One of the effects of Si treatment is a higher deposition of epicuticular wax on plant leaves, which helps reduce transpiration and maintain turgidity (Sarto et al, 2016). (Gunes 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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Effects of silicon (Si) fertilization on gas exchange and production in Brachiaria

Cited by 15 publications

References 41 publications

Nutrients release from powder phonolite mediated by bioweathering actions

Nutrients release from powder phonolite mediated by bioweathering actions

Wheat phenology and yield under drought: A review

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

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