scholarly journals Avaliação do potencial fitorremediador de crisântemo em solo com excesso de cobre

2017 ◽  
Vol 23 (1) ◽  
pp. 63 ◽  
Author(s):  
Janine Farias Menegaes ◽  
Fernanda Alice Antonello Londero Backes ◽  
Rogério Antonio Bellé ◽  
Alexandre Swarowsky ◽  
Rodrigo Fernando dos Santos Salazar
Keyword(s):  
Aerial Part ◽  
Bioconcentration Factor ◽  
Metal Extraction ◽  
High Accumulation ◽  
Aesthetic Quality ◽  
Randomized Experimental Design ◽  
Identification Of Species ◽  
And Control ◽  
Translocation Factors ◽  
Harmful Effects

Minimizing the harmful effects of copper (Cu) in the soil, using plants are slow and gradual, requiring the identification of species with fitorremediativa fitness for this process. Thus, the present work had as objective to evaluate the cultivation of chrysanthemum cv. Dark Fiji in soil added with Cu as promising phytoremediation. The experiment was conducted in the period from July to December 2014, in the greenhouse of the Floriculture UFSM. In a completely randomized experimental design, with five treatments composed of doses of Cu added to the soil, in the amounts of 250, 500, 750 and 1,000 mg kg-1 and control (without addition), with five replications. In two crop cycles both with duration of 104 days from the production of seedlings to harvest. Chrysanthemum cuttings were obtained from cuttings collected in the garden clonal itself, with 8 cm long, rooted in commercial substrate and transplanted into containers containing soil. They evaluated phytotechnical parameters and translocation factors of aerial part of bioaccumulation and bioconcentration factor of Cu in plant roots and metal extraction rate. It was observed that at all doses of Cu added to the soil, the plants showed low plant development and floriferous affecting its aesthetic quality in both crop cycles. The high accumulation of Cu in the roots is indicative of growing tolerance, cv. Dark Fiji in areas with excess of this, with phytoremediation potential.

scholarly journals APLICAÇÃO FOLIAR DE NITROGÊNIO NA SOJA EM DIFERENTES FASES FENOLÓGICAS E INOCULAÇÃO COM Bradyrhizobium japonicum

Nativa ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 333 ◽  
Author(s):  
Willian Buratto ◽  
Weslley Buratto ◽  
Amanda Martins de Oliveira ◽  
Reginaldo De Oliveira ◽  
Gustavo Caione ◽  
...  
Keyword(s):  
Bradyrhizobium Japonicum ◽  
Aerial Part ◽  
Foliar Application ◽  
Leaf Nitrogen ◽  
State University ◽  
Biological Fixation ◽  
Mato Grosso ◽  
Soybean Crop ◽  
Randomized Experimental Design ◽  
Beginning Of Flowering

A adubação nitrogenada na cultura da soja, associada a inoculação com a bactéria Bradyrhizobium japonicum é uma prática comum na agricultura, no entanto, muito contestada. Objetivou-se neste estudo avaliar a resposta da soja à aplicação foliar de N em diferentes estádios fenológicos e à aplicação de inoculante com Bradyrhizobium japonicum. O experimento foi realizado em casa de vegetação da Universidade do Estado de Mato Grosso, Alta Floresta-MT. Foi utilizado o delineamento experimental inteiramente casualizado em arranjo fatorial 4x2, sendo quatro épocas de aplicação de nitrogênio (R1 - Início de floração, R3 - Final da floração, R5.1 - Grãos perceptíveis ao tato e R5.3 - Maioria das vagens entre 25-50% de granação) e presença ou ausência de Bradyrhizobium japonicum, com quatro repetições. Conclui-se que a aplicação de nitrogênio foliar na cultura da soja no estágio R1 proporcionou aumento no acúmulo de nitrogênio na parte aérea, no número de vagens e de grãos por planta. A presença do inoculante proporcionou maior número de vagens quando aplicou se N nas épocas R1 e R3, já para a matéria seca de parte aérea, o melhor resultado foi obtido, quando o N foi aplicado em R 5.3, na ausência do inoculante.Palavras-chave: adubação nitrogenada, fixação biológica, inoculante. LEAF APPLICATION OF NITROGEN IN DIFFERENT PHENOLOGICAL STAGES IN SOYBEAN AND INOCULATION WITH Bradyrhizobium japonicum ABSTRACT:Nitrogen fertilization in soybean crop, associated with inoculation with a bacterium Bradyrhizobium japonicum is a common practice in agriculture, however, much contested. The objective of this study was to evaluate the response of soybeans to foliar application of N in different stages of phenology and the application of inoculant with the diazotrophic bacterium Bradyrhizobium japonicum. The experiment was carried out in a greenhouse at the State University of Mato Grosso, Alta Floresta-MT. The completely randomized experimental design was used in a 4x2 factorial arrangement, with 4 nitrogen application times (R1 - Beginning of flowering, R3 - Final flowering, R5.1 - Grains perceptible to touch and R5.3 - Most pods between 25 -50% granulation) and presence or absence of Bradyrhizobium japonicum, with 4 replicates. It was concluded that the application of leaf nitrogen in the non-stage soybean crop provided an increase in the accumulation of nitrogen in the aerial part, there is no number of pods and grains per plant. The presence of the inoculant provided a larger number of pods when applicable. N in the periods R1 and R3, and for the aerial part dry matter, the best result obtained when it was obtained in R 5.3, in the absence of the inoculant.Keywords: nitrogen fertilization, biological fixation, inoculant.

scholarly journals Efecto del extracto acuoso de tubérculos de Cyperus rotundus L. en la propagación por esquejes de Jatropha curcas L.

2016 ◽  
Vol 18 (1) ◽  
pp. 09
Author(s):  
Luan Hamilton de Souzaa ◽  
Lucas Lafratta Calandrelli ◽  
José Luis Soto Gonzales
Keyword(s):  
Jatropha Curcas ◽  
Sao Paulo ◽  
Cyperus Rotundus ◽  
Distilled Water ◽  
São Paulo ◽  
Synthetic Auxin ◽  
Jatropha Curcas L ◽  
Randomized Experimental Design ◽  
Cutting Length ◽  
And Control

<p><strong>RESUMEN</strong></p><p>Este estudio se realizó en la UNESP de campus de Isla Solteira - São Paulo (Brasil), en condiciones de invernadero bajo condiciones controladas. El objetivo fue estudiar la inducción de enraizamiento de esquejes de pinhão-manso (Jatropha curcas L.) mediante la aplicación de diferentes concentraciones de extractos acuosos de tubérculos de tiririca (Cyperus rotundus L.) en comparación con la aplicación de la auxina sintética Ácido indolbutírico (AIB). El experimento fue instalado en 15/10/2011, utilizando un diseño experimental completamente al azar con 4 tratamientos (tubérculos de pinhão-manso 25g por 0,5 L; 1,0 L y 1,5 L de agua destilada. Ácido indolbutírico en polvo en una concentración de 1000 ppm) con un testigo. Se realizó el experimento con tres repeticiones por tratamiento y 10 esquejes por repetición, por un total de 150 esquejes. Los esquejes de pinhão-manso se estandarizaron con 10 cm de largo y 6.9 mm de diámetro. Posteriormente se sumergieron en los extractos de tiririca durante 30 minutos y se luego fue incorporada la auxina sintética en polvo (AIB) en la base de los esquejes. El plantío fue realizado en recipientes con substrato. 60 días después de la instalación del experimento se evaluó el porcentaje de esquejes enraizados, número de raíces por cada esqueje, longitud máxima raíz emitida por esquejes y el peso de la masa de materia fresa seca de las raíces. Se concluyó que el extracto acuoso tiririca en la concentración de 25g por 1.5L de agua destilada proporciono el mayor porcentaje de esquejes enraizados; sin embargo la AIB en la concentración de 1000 ppm proporciono raíces en mayor número y más vigorosa.</p><p><strong> </strong></p><p><strong>RESUMO</strong></p><p>Este trabalho foi realizado na UNESP de Ilha Solteira – São Paulo (Brasil), em casa de vegetação, sob condições controladas. O objetivo foi estudar a indução do enraizamento de estacas de pinhão-manso (<em>Jatropha curcas</em> L.) com a aplicação de diferentes concentrações de extratos aquosos de tubérculos de tiririca (<em>Cyperus rotundus</em> L.) em comparação com a aplicação de auxina sintética (ácido indolbutírico). O experimento foi instalado no dia 15/10/2011, utilizando delineamento experimental inteiramente casualizados nos 4 tratamentos (25g de tubérculos de tiririca por 0,5 L, 1,0 L e 1,5 L de água destilada. E AIB em pó, na concentração de 1000 ppm) e testemunha, com três repetições por tratamento e 10 estacas por repetição, totalizando 150 estacas. As estacas de pinhão-manso foram padronizadas com 10 cm de comprimento e 6 a 9 mm de diâmetro. Posteriormente foram imersas nos extratos de tiririca por 30 minutos, e aplicado auxina sintética, AIB em pó, na base das estacas. O plantio foi em jardineiras contendo substrato. Aos 60 dias após a instalação do experimento, foram avaliadas a porcentagem de estacas enraizadas, número de raízes por estaca, comprimento da maior raiz emitida por estacas, e massa da matéria fresca e seca das raízes. Concluiu-se que o extrato aquoso de tiririca na diluição 25g por 1,5L de água destilada, proporcionou maior porcentagem de estacas enraizadas, porém o AIB 1000 ppm produziu raízes em maior número e mais vigorosas.</p><p> </p><p><strong>Abstract</strong></p><p>This study was conducted at UNESP of Single Island - Sao Paulo (Brazil), in a greenhouse under controlled conditions. The aim was to study the induction of rooting pinhão-manso <em>Jatropha curcas</em> L. by applying different concentrations of aqueous extracts of tiririca <em>Cyperus rotundus</em> L. compared with the application of synthetic auxin (IBA). The experiment was installed on 15/10/2011, using completely randomized experimental design in 4 treatments (25g nutsedge tubers by 0.5 L, 1.0 L and 1.5 L of distilled water. And AIB powder, at 1000 ppm) and control with three replicates per treatment and 10 cuttings per replication, totaling 150 cuttings. The pinhão-manso cuttings were standardized with 10 cm long and 6-9 mm in diameter. Subsequently they were immersed in sedge extracts for 30 minutes and applied synthetic auxin, AIB powder at the base of the cuttings. The plantation was in bib containing substrate. 60 days after the installation of the experiment were evaluated the percentage of rooting, number of roots per cutting, length of roots emitted by cuttings, and fresh weight and dry roots. It was concluded that the aqueous extract of sedge dilution 25g for 1.5L of distilled water showed higher percentage of rooted cuttings, but IBA 1000 ppm produced roots in greater numbers and more vigorous.</p>

scholarly journals Phytomanagement: perspectives of using of phytoremediation technology in Kazakhstan

2020 ◽  
Vol 159 ◽  
pp. 01003
Author(s):  
Saule Atabayeva ◽  
Saule Kenzhebayeva ◽  
Ravilya Alybayeva ◽  
Saltanatm Аsrandina ◽  
Sabina Shoinbekova
Keyword(s):  
Heavy Metals ◽  
Plant Species ◽  
Bioconcentration Factor ◽  
High Accumulation ◽  
Plant Organs ◽  
Removal Of Heavy Metals ◽  
East Kazakhstan ◽  
High Degree ◽  
Heavy Metals In Soils

The content of heavy metals around the metallurgical plants of East Kazakhstan in the soil and plants growing around these plants was studied. It was determined the concentration of heavy metals in soils, plant organs, it was calculated bioconcentration factor and the level of extraction of heavy metals by sunflower and lawn grasses. The study of sunflower plants and lawn grasses showed that the studied species accumulated a significant amount of heavy metals mainly in the roots. Sunflower plants and lawn grasses had high accumulation activity and accumulated a significant amount of heavy metals in their organs. Determination of the content of heavy metals in the soil showed a significant removal of heavy metals from the soil, which indicates a high degree of phytoextraction of heavy metals by the studied plant species.

THE ROLE OF EXPOSURE CONDITION IN THE EFFECTIVENESS OF EXPLICIT CORRECTION

2015 ◽  
Vol 38 (1) ◽  
pp. 65-96 ◽  
Author(s):  
Yucel Yilmaz
Keyword(s):  
Experimental Design ◽  
Native Speaker ◽  
Control Group ◽  
Exposure Condition ◽  
Linguistic Structure ◽  
Group Assignment ◽  
Communication Games ◽  
Randomized Experimental Design ◽  
And Control

This article reports on a study that investigated the effects of two feedback exposure conditions on the acquisition of two Turkish morphemes. The study followed a randomized experimental design with an immediate and a delayed posttest. Forty-two Chinese-speaking learners of Turkish were randomly assigned to one of three groups: receivers, nonreceivers, and control. All learners performed three communication games with a Turkish native speaker in which their errors on the Turkish plural and locative morphemes were treated according to their group assignment. The receivers’ errors were corrected through explicit correction. The nonreceivers were allowed to hear the feedback provided to the receivers; however, they did not receive feedback on their own errors. The learners in the control group neither received feedback on their own errors nor were allowed to hear the feedback other learners received. Results indicated that feedback exposure condition has an effect on the extent to which learners benefit from feedback but that this effect may be moderated by linguistic structure.

scholarly journals Identification of Carbon Monoxide Levels

2020 ◽  
Vol 9 (4) ◽  
pp. 883-890
Keyword(s):  
Carbon Monoxide ◽  
Prediction Accuracy ◽  
Blood Stream ◽  
Simple System ◽  
Data Set ◽  
And Control ◽  
Different Sources ◽  
Harmful Effects ◽  
Pollutant Gases ◽  
Monitor And Control

With ever rising emission of pollutant gases from different sources like factories, auto mobiles and power, it is a subject of emerging concerns that some strong measures are required to monitor and control these pollutant. Breathing of these gases may cause serious harmful effects to anyone. In these gases, Carbon Monoxide (CO) is often called "Silent Killer" as being colour-less, odour-less and poisonous, it is undetectable by humans. When inhaled it, it deprives blood stream of oxygen and suffocates its victim. In this paper we are proposing a simple system to monitor Carbon Monoxide (CO). Carbon Monoxide (CO) detectors are used to detect CO. This paper also discusses analysis of amount of these CO based a data set from Kaggle and prediction of possible amount of CO in air using regression. The prediction accuracy which is measured as RMSE is 0.17766.

scholarly journals Elementome of Endemic Dolomitic Flora: Pterocephalus spathulatus (Lag.) Coult

Land ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1253
Author(s):  
Encarna Merlo ◽  
Antonio J. Mendoza-Fernández ◽  
Esteban Salmerón-Sánchez ◽  
Fabián Martínez-Hernández ◽  
Andrea Ortiz-Úbeda ◽  
...  
Keyword(s):  
Mineral Composition ◽  
Plant Community ◽  
Toxic Metals ◽  
Aerial Part ◽  
Bioconcentration Factor ◽  
Translocation Factor ◽  
Mineral Contents ◽  
Characteristic Species ◽  
The Rich ◽  
High Concentrations

Unusual dolomite substrates present a phenomenon known as dolomitophily, which refers to the specificity of the flora that grows on them. Within the dolomitic flora, one of the most widespread plants in Spain is the characteristic species Pterocephalus spathulatus (Lag.) Coult., which forms whitish prostrate thymes. The present study focused on the knowledge about the ionome (or elementome) of a characteristic dolomite species and some of its applications, both in terms of its nutritional behaviour and in determining the factors that favour the rich and rare flora growing on dolomitic soils. Soil, foliar, stem and root samples of the species studied were collected from different locations in the south of Spain. The samples were analysed to determine their mineral composition. The Bioconcentration Factor (BCF) and the Translocation Factor (TF) were calculated, relating the values of the mineral contents in the soil, both total and phytoavailable, to the values from the foliar, root and stem samples. It was found that this species was able to accumulate some elements, including B, Cr, Cu, Ni, Ti, Tl and Zn, which can be phytotoxic in high concentrations, and are considered to be some of the main toxic metals in soils. In addition, it was observed that the plant can accumulate metals in the stem and leaves (TF), thus proving that it is capable of transporting them from the root to the aerial part of the plant. The data obtained may indicate that other species in the plant community may possess this bioindicator or even phytoremediation capacity.

scholarly journals Ruminal degradation of dry matter and neutral detergent fiber of banana peel treated with limestone

2016 ◽  
Vol 37 (1) ◽  
pp. 345
Author(s):  
Flávio Pinto Monção ◽  
Sidnei Tavares dos Reis ◽  
João Paulo Sampaio Rigueira ◽  
Eleuza Clarete Junqueira de Sales ◽  
Dorismar David Alves ◽  
...  
Keyword(s):  
Dry Matter ◽  
Neutral Detergent Fiber ◽  
Banana Peel ◽  
Percentage Unit ◽  
Randomized Experimental Design ◽  
Dry Matter Degradation ◽  
Ruminal Degradation ◽  
Pulp Removal ◽  
And Control ◽  
Kinetics Of

This study aimed to evaluate the kinetics of dry matter degradation and neutral detergent fiber of banana peel treated with limestone. The banana peel has been acquired from a candy manufacturer that after washing with chlorinated water to 1% and pulp removal was discarded. The banana peel in nature was treated with 1, 2, 3 and 4% of limestone in the natural matter, homogenized and pre-dried in the sun for 120 hours. The experiment was conducted in a completely randomized experimental design, with five treatments (0 (control), 1, 2, 3 and 4% inclusion of limestone) with 3 repetitions. The dry matter potential degradability, showed no difference (P>0.05) in the levels compared to the control with an average of 67.58%. The insoluble degradation fraction rate of dry matter and the fiber fraction did not differ (P> 0.05) between levels and control. In relation to effective degradability of neutral detergent fiber, there was an increase of 3.47% for each percentage unit increased limestone. In relation to the ruminal degradation parameters of dry matter and neutral detergent fiber is not recommended the utilization of limestone as an additive in the treatment of banana peel.

scholarly journals Soy Isoflavones in Integrative Oncology: Increased Efficacy and Decreased Toxicity of Cancer Therapy

2019 ◽  
Vol 18 ◽  
pp. 153473541983531 ◽  
Author(s):  
Ilyas Sahin ◽  
Birdal Bilir ◽  
Shakir Ali ◽  
Kazim Sahin ◽  
Omer Kucuk
Keyword(s):  
Cancer Cells ◽  
Epidemiological Studies ◽  
Soy Isoflavones ◽  
Anti Oxidant ◽  
Orally Bioavailable ◽  
And Control ◽  
Harmful Effects

Soy consumption in human diet has been linked to decreased incidence of a variety of cancers, suggesting a potential role of soy products in cancer prevention and control. Furthermore, a substantial body of evidence in the literature suggests that soy supplementation may improve the efficacy and prevent the adverse effects of cancer chemotherapy and radiation therapy. Isoflavones constitute the predominant anticancer bioactive compounds in soy. Genistein, which is the most abundant and active isoflavone in soy, has a multitude of effects on cancer cells, including inhibition of NF-κB activation and DNA methylation, enhancement of histone acetylation, inhibition of cell growth and metastasis, and antiangiogenic, anti-inflammatory, and anti-oxidant effects. Isoflavones are orally bioavailable, easily metabolized, and usually considered safe. In this article, we review in vitro and in vivo evidence as well as the results of clinical and epidemiological studies on the effects of soy isoflavones, with a focus on sensitization of cancer cells to chemotherapy and radiation while at the same time protecting normal cells from the harmful effects of these treatments.

scholarly journals Development of bean plants in soil contaminated with trifloxysulfuron-sodium after Stizolobium aterrimum and Canavalia ensiformis cultivation

2007 ◽  
Vol 25 (1) ◽  
pp. 87-96 ◽  
Author(s):  
S.O. Procópio ◽  
J.B. Santos ◽  
F.R. Pires ◽  
A.A. Silva ◽  
E.A. Santos ◽  
...  
Keyword(s):  
Green Manure ◽  
Aerial Part ◽  
Dry Mass ◽  
Canavalia Ensiformis ◽  
Productivity Losses ◽  
Bean Plants ◽  
Grain Productivity ◽  
Four Levels ◽  
Harmful Effects ◽  
Culture Productivity

Phytoremediation, the use of plants to decontaminate soils and water resources from organic pollutants such as herbicides, is economically and environmentally a promising technique applied in many areas, including agriculture. The objective of this work was to evaluate the development of bean plants cultivated in the field, in soil with different levels of trifloxysulfuron-sodium contamination, following cultivation of two green manure species, as well as to evaluate the possibility of recontamination of the area by such herbicide with the straw permanence on the soil. The experiment was carried out in Coimbra, MG, Brazil, on a sandy clayey Red - Yellow Argisol from March to November 2003. Four levels of soil contamination with trifloxysulfuron-sodium (0.00; 3.75; 7.50; and 15.00 g ha-1) were used as well as the following five types of cultivation prior to bean sowing in the area after herbicide application: black velvet beans (Stizolobium aterrimum) followed by removal of straw; S. aterrimum, followed by permanence of straw; jack bean (Canavalia ensiformis), followed by removal of straw; C. ensiformis followed by permanence of straw; and without prior cultivation, weed-free (weeded control). The leguminous plants were kept in the area for 65 days, cut close to the soil, and with its aerial part left or not on the surface of the experimental plot, depending on the treatment. Fifteen days after the species were cut, bean was sown in the area. At 45 days after emergence (DAE) of the bean plants, plant height and dry mass of the aerial part were evaluated. Grain productivity was determined during harvest. Height, dry matter of the aerial part and grain productivity of the bean plants, cultivated in an area previously contaminated with trifloxysulfuron-sodium at any of the levels tested, were higher with prior cultivation of S. aterrimum or C. ensiformis. At the lowest level of herbicide contamination, prior cultivation of C. ensiformis was found to be more efficient than that of S. aterrimum in mitigating the harmful effects of trifloxysulfuron-sodium on bean grain production. The permanence of the straw of the green manure species during the bean cycle did not harm the development of the plants or caused culture productivity losses, indicating that straw permanence in the area does not promote recontamination of the area.

Promotion and control of aesthetic quality in Sweden

1999 ◽  
Vol 4 (1-2) ◽  
pp. 59-65 ◽  
Author(s):  
Louise Nyström
Keyword(s):  
Aesthetic Quality ◽  
And Control
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