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Made available in DSpace on 2022-04-28T19:51:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Microbial biodiversity of an environment can contribute to plant growth and increase crop yield. Plant extracts from soybean (Glycine max (L.) Merrill) were investigated on soybean plants grown after inoculation with these extracts. Soil samples were collected from two important Brazilian soybean-growing regions to produce the extracts used in the experiments. The extracts were produced with material collected from aboveground biomass and rhizosphere of soybean plants cultivated in a controlled greenhouse (phase 1). The extracts produced in phase 1 were applied in a sequential experiment (phase 2). Phase 2 was conducted to examine the plant microbiome after the microbial alteration process in the greenhouse through seed inoculation with the extracts produced previously. Samples of aboveground biomass were collected to determine root dry matter and crop yield. Bacterial 16S rRNA sequences were processed to determine the final microbial content of soybean. The inoculated treatments had lower species diversity; however, the phyla Firmicutes and Bacteroidetes were more abundant in the treatments than in the non-inoculated treatment. The soybean plant stem in the inoculated treatment also had a positive response to enrichment of the bacterial classes Betaproteobacteria, Bacilli and Flavobacteria. Inoculation affected the microbial composition of soybean plants. The alteration of microbiome changes revealed differences for crop yield between the inoculated and non-inoculated treatments, with up to 93.5 % higher crop yields per plant according to the extract applied. Embrapa Meio Ambiente, Rod. SP 340, km 127, SP Universidade de São Paulo/ESALQ Depto. de Engenharia de Biossistemas, C.P. 09, SP Universidade de São Paulo/ESALQ Depto. de Ciência do Solo Lab. de Microbiologia do Solo, C.P. 09, SP Western Sydney University/Hawkesbury Institute for the Environment Universidade Estadual Paulista “Júlio de Mesquita Filho”/FCAT Depto. de Produção Vegetal, Campus Dracena, Rod. Comandante João Ribeiro de Barros, km 651 – Bairro das Antas, SP Universidade Estadual Paulista “Júlio de Mesquita Filho”/FCAT Depto. de Produção Vegetal, Campus Dracena, Rod. Comandante João Ribeiro de Barros, km 651 – Bairro das Antas, SP FAPESP: 2017/15556-5

This study proposes to examine the potential use of Bacillus aryabhattai in pre-sprouted seedlings of sugarcane inoculated with the microorganism when subjected to different regimes of water supply after transplanting. The experiment was laid out in a randomized-block design with a complete 3 × 2 × 5 factorial arrangement, in five replicates. The factors were represented by pre-sprouted seedlings of three sugarcane varieties (IAC 911099, RB 855156 and CTC 20), two seedling types (inoculated and not inoculated with B. aryabhattai) and five frequencies of water supply, which provided the ability of return to 100% soil field capacity, at every 0, 10, 20, 30 and 40 days. Plant mortality, plant height, number of leaves, stalk diameter and number of tillers were evaluated throughout the experimental period. At the end of the study, the shoot dry matter (SDM) and root dry matter (RDM) contents of the plants were measured. The number of leaves on the plant was affected only in isolation, according to the cultivar, without effects of the other studied factors. There was a double interaction effect between the factors of variety and inoculation (V*I) for the variables of SDM, stalk diameter and height; and between frequency and inoculation (F*I) for stalk diameter. There was a triple interaction effect between variety, inoculation and frequency (V*I*F) for the RDM variable. Thus, the use of B. aryabhattai as an inoculant in pre-sprouted seedlings of sugarcane at the time of seedling formation can improve plant development after transplanting depending on the cultivar used, especially in IAC 911099 and RB 855156. Made available in DSpace on 2021-12-28T15:00:51Z (GMT). No. of bitstreams: 1 May-Effect-bacillus-2021.pdf: 185271 bytes, checksum: 2dcff09a5d55d7ad39b8bf097a80ff05 (MD5) Previous issue date: 2021

This article presents a review on the use of graphene in various segments, elucidating that this product can be used in various industrial sectors. These include mainly agriculture (as in large crops of high relevance, such as coffee), the food industry and the environment, as a plant growth stimulator and in fertilizers, nanoencapsulation and smart-release systems, antifungal and antibacterial agents, smart packaging, water treatment and ultrafiltration, contaminant removal, pesticide and insecticide quantitation, detection systems and precision agriculture. However, some challenges can be overcome before the graphene-based nanoparticle is used on a large scale. In this way, before using the product in the environment, it is necessary to determine whether the technology is safe for the soil-plant system and consumers. Furthermore, the cost of its use can also be a limiting factor depending on the level applied. Therefore, this review proposes to examine the diverse literature to explain the effects of the use of graphene in agriculture, plants and soil microorganisms. Accordingly, this article discusses and presents the possibilities of application of graphene in agriculture, plants and soil microorganisms. -- Resumo Este artigo apresenta uma revisão sobre o uso do grafeno em vários segmentos, elucidando que esse produto pode ser usado em vários setores da indústria, principalmente na agricultura, como em grandes culturas agrícolas de alta relevância como café, por exemplo, na indústria alimentícia e no meio ambiente, como estimulador de crescimento de plantas e fertilizantes, nanoencapsulação e sistemas de liberação inteligente, agentes antifúngicos e antibacterianos, embalagens inteligentes, tratamento de água e ultrafiltração, remoção de contaminantes, quantificação de pesticidas e inseticidas, sistemas de detecção e agricultura de precisão. Contudo, alguns desafios podem ser superados antes que a nanopartícula à base de grafeno seja utilizada em escala. Assim, antes do uso do produto no ambiente é necessário verificar se a tecnologia é segura para o sistema solo-planta e para os consumidores, além disso, o custo de utilização também pode ser um limitador, conforme a dose utilizada. Portanto, o objetivo desta revisão é analisar as diversas literaturas, explicando os efeitos do uso de grafeno na agricultura, plantas e microrganismos no solo. Assim, com o presente artigo, busca-se discutir e apresentar as possibilidades aplicativas do uso do grafeno na agricultura, nas plantas e nos microrganismos no solo. -- El grafeno se puede utilizar en diversos sectores de la industria, principalmente en la agricultura, en la industria alimentaria y en el medio ambiente, como estimulador del crecimiento de plantas y fertilizantes, nanoencapsulación y sistemas de liberación inteligente, agentes antifúngicos y antibacterianos, envases inteligentes, tratamiento de agua y ultrafiltración, remoción de contaminantes, cuantificación de pesticidas e insecticidas, sistemas de detección y agricultura de precisión. Sin embargo,algunos desafíos necesitan ser superados antes de que la nanopartícula basada en grafeno se utilice a escala. Así, antes de usar el producto en el medio ambiente, es necesario verificar si la tecnología es segura para el sistema suelo-planta y para los consumidores, además, el costo de uso también puede ser un limitante, dependiendo de la dosis utilizada. Así, el objetivo de esta revisión es analizar la diversa literatura, explicando los efectos del uso de grafeno en agricultura, plantas y microorganismos en el suelo. Made available in DSpace on 2021-04-19T18:33:54Z (GMT). No. of bitstreams: 1 May-Graphene-new-2021.pdf: 215251 bytes, checksum: b561ca0a5a5ba793863d0fba8c42f298 (MD5) Previous issue date: 2021

Pellets refer to solid biofuels for heating and power. The pellet&rsquo, s integrity is of great relevant to ensure safe and effective transportation and storage, and comfort to stakeholders. Several materials that are supportive, whether organic and inorganic, to pellets exist. However, no work in the literature is linking making hybrid non-wood pellets with addition of residual biomass from distillation of cellulosic bioethanol, and this requires further investigations. Figuring out how effective this challenging agro-industrial residue could be for reinforcing non-wood pellets is accordingly the scientific point of this study focusing on management of waste and valorization of biomass. The pilot-scale manufacturing of hybrid pellets consisted of systematically pressing sugarcane bagasse with the lignocellulosic reinforcement at the mass ratios of 3:1, 1:1, and 1:3 on an automatic pelletizer machine at 200 MPa and 125 &deg, C. Elemental contents of C and H, durability, and energy density all increased significantly from 50.05 to 53.50%, 5.95 to 7.80%, 95.90 to 99.55%, and 28.20 to 31.20 MJ kg&minus, 1, respectively, with blending the starting material with the reinforcement at 1:3. Preliminary evidence of residual biomass from distillation of second-generation bioethanol capable of highly improving molecular flammable/combustible properties, mechanical stability, and fuel power of composite non-wood pellets exist.

Development of strategies to ensure grazing systems are sustainably produced in harsh environments, while not fertilizing them conventionally, is challenging. Figuring out the extent to which dose of inoculation and period of watering can positively influence the establishment of an effective symbiosis between U. brizantha cv. Marandu and Azospirillum brasilense is the point of this research. The treatment consisted of mixing 1 kg seeds with the inoculant of the strains Ab-V5 and Ab-V6 at 5, 10, 20, and 40 mL kg&minus, 1, 2 x 108 CFU mL&minus, 1. The plants grew in pots watered 2, 4, 8, and 16 days after sowing over thirty-days, twice. The bioagent at 5&ndash, 10 mL kg&minus, 1 enabled the plants watered up to 4 days after sowing to peak the production of dry mass of shoots (28.50 g) and roots (12.55 g). The efficiency of the symbiosis goes down quickly with increasing dose and delay of watering. Hence, if the dose of inoculant is higher than 10 mL kg&minus, 1, it cannot successfully act in plants watered at least 8 days after sowing anymore. In conclusion, A. brasilense can assist in U. brizantha cv. Marandu growth and healthy development unless a lack of water in the substrate and an overdose collectively deter its potential.

Drought, heat, and salinity, as well as pests, are stressing agents, which have impressively declined the productivity and quality of sugarcane crop in harsh environments. Our study aimed to examine the effect of various chemical ripeners as alternatives to enhancing the reactiveness of the enzymatic antioxidant system of sugarcane crop. The field experiment consisted of spraying the ingredients, ethephon, ethyl-trinexapac, glyphosate, carboxylic compounds (MTD) and methyl-sulfumeturon on the Brazilian commercial varieties, SP80-1842 and SP80-3280, before flowering stage. The enzymatic assay comprised the monitoring of the rate of degradation of free radical by ascorbate peroxidase (APX), catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) in the extract from leaves of 11-month-old plants. Spraying glyphosate at 0.15 L ha&minus, 1 with MTD at 1.00 L ha&minus, 1 provided the highest activity of CAT, 0.65 &micro, mol H2O2 min&minus, 1 mg&minus, 1 protein, in variety SP80-1842 Spraying glyphosate at 0.15 L ha&minus, 1 with ethephon at 0.33 L ha&minus, 1 caused the highest activity of APX, 1.70 nmol ascorbate min&minus, 1 protein, in variety SP80-3280. The conclusion is, therefore, that mixtures of glyphosate with the insecticide/acaricide, MTD, and with the synthetic ethylene-releasing product, ethephon could help sugarcane crop grow adequately under uncontrollable or unpredictable agroecosystems like marginal lands.

Brazil is the largest coffee producer in the world. In view of the concern for sustainable development in its economic, social and environmental dimensions, the present study was developed to examine the influence of a product based on the amino acid proline on the productive performance of coffee plants when applied foliarly. Six doses of the product applied via foliar spraying were tested. Emergence of new leaves from plagiotropic branches, number of flowers, number of young green cherries, total weight of all fruit types and polyphenoloxidase enzyme dosage were evaluated in a randomized-block experimental design with three replicates. Each plot consisted of three crop rows with 10 plants each. Significant differences were detected for all evaluated traits. The increasing doses of the proline-based product promoted an increase in the number of flowers, young green cherries and leaves emerged on the evaluated plagiotropic branches, demonstrating that the amino acid improves the performance of coffee plants. The ideal dose of the product to provide the highest coffee fruit productivity was 500 mL/ha, applied before flowering. The different doses of the amino acid concentrate were effective in increasing polyphenoloxidase activity and can be used as an instrument for improving the quality of coffee as well as an aid in conferring resistance to coffee diseases caused by microorganisms. Made available in DSpace on 2020-10-04T09:11:32Z (GMT). No. of bitstreams: 1 May-Development-coffee-2020.pdf: 365355 bytes, checksum: 027848e05b638103626e663b545e485d (MD5) Previous issue date: 2020

Made available in DSpace on 2020-12-10T20:06:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-06-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The development and implementation of strategies to assist safe and effective transport and storage of pellets in containers and indoor facilities without heating systems are challenging. This study primarily aimed to reshape the organic fraction of municipal solid waste into a liquid-state binder in order to develop freezing-defrosting-proof non-wood pellets. The introduction of the standard solution of food waste into the process of pelleting consisted of stirring it together with the residual biomass from distillation of cellulosic bioethanol or alternatively spraying very fine droplets on the layer of the starting material before it entered the pilot-scale automatic machine at 200 MPa and 125 degrees C. The addition by spraying of carbohydrate-rich supplement boiled for five minutes caused the pellets to show increases in apparent density (1250.8500 kg center dot m(-3)), durability (99.7665%), and hydrophobicity (93.9785%), and consistently prevented them from suffering severe mechanical fracture by thermal shock. The fractal dimension of breakpoints, cracks, and delamination on the finished surface for these products was the smallest at 1.7500-1.7505. Sprayed pellets would fall into the strictest grid of products for residential heat-and-power units, even after freezing and defrosting. The conclusion is therefore that spraying can spectacularly ensure the reliability of liquid-state food waste as an anti-thermal shock binder for non-wood pellets. Sao Paulo State Univ Unesp, Sch Engn, Dept Phytosanit Rural Engn & Soils, BR-15385000 Ilha Solteira, SP, Brazil Sao Paulo State Univ Unesp, Coll Agr & Technol Sci, Dept Plant Prod, BR-19900000 Dracena, SP, Brazil Brazilian Agr Res Corp Embrapa, BR-13820000 Jaguariuna, SP, Brazil Sao Paulo State Univ Unesp, BR-18400000 Itapeva, SP, Brazil Sao Paulo State Univ Unesp, Sch Engn, Dept Phytosanit Rural Engn & Soils, BR-15385000 Ilha Solteira, SP, Brazil Sao Paulo State Univ Unesp, Coll Agr & Technol Sci, Dept Plant Prod, BR-19900000 Dracena, SP, Brazil Sao Paulo State Univ Unesp, BR-18400000 Itapeva, SP, Brazil FAPESP: 24234-1

Originating from backcrossing generations between wild and commercial sugarcane varieties, ?energy cane? technology promises to revolutionize global energetic scenario, once full use of feedstock is allowed. Therefore, the aim of this study was to assess juice technological quality, lignocellulosic physical-chemical composition, and biomass yield of nine energy cane. The experiment had a randomized block design with five replications for each clone (treatment) (VX12-1659, VX12-1658, VX12-1356, VX12-1191, VX12-1022, VX12-0277, VX12-0201, VX12-0180, and VX12-0046) with five replicates. Following to tillage harvest, stalk samples were assessed for total soluble solids (ºBrix; % juice), sucrose (Pol; % juice), purity (Prt; % juice), reducing sugars (RS; % juice), theoretical sugars recoverable (TSR; kg t-1 stalks), Pol (% cane), RS (% cane), moisture (% cane), fibers (Fib; % cane), and dry biomass yield (DBY; t ha-1). The obtained data was subjected to the following statistical tests (p < 0.05): Shapiro?Wilk, Fisher, Tukey, and Pearson?s linear correlation. Findings revealed null hypothesis rejection, suggesting the clones significantly affected all assessed traits. The individuals VX12-1659, VX12-1658, VX12-1356, VX12-1191, VX12-1022, and VX12-0277 exhibited the highest °Brix (% juice), Pol (% juice), Prt (% juice), TSR, Pol (% cane), moisture (% cane), and Fib (% cane) values. In addition, the clones VX12-1659, VX12-1658, and VX12-1356 resulted in DBY averages higher than other individuals of the population. In fact, all clones showed Type II energy cane typical characteristics due to a low sucrose/fiber ratio. Thus, the energy cane clones are suitable for bioelectricity co-generation. Made available in DSpace on 2019-12-05T00:36:28Z (GMT). No. of bitstreams: 1 MayJuiceTechnological2019.pdf: 1252520 bytes, checksum: bd808ea0341bfb31d60b2123c7f9a4b3 (MD5) Previous issue date: 2019

The biggest challenge facing in sugar-energy plants is to move towards the biorefinery concept, without threatening the environment and health. Energy cane is the state-of-the-art of smart energy crops to provide suitable whole-raw material to produce upgraded biofuels, dehydrated alcohol for transportation, refined sugar, yeast- fermented alcoholic beverages, soft drinks, silage and high quality fodder, as well as to cogenerate heat and bioelectricity from burnt lignocellulose. We, accordingly, present fuzzy c-means (FCM) clustering algorithm interconnected with principal component analysis (PCA) as powerful exploratory data analysis tool to wisely classify hybrids of energy cane for production of first-generation ethanol and cogeneration of heat and bioelectricity. From the orthogonally-rotated factorial map, fuzzy cluster I aggregated the hybrids VX12-0277, VX12-1191, VX12-1356 and VX12-1658 composed of higher contents of soluble solids and sucrose, and larger productive yields of fermentable sugars. These parameters correlated with the X-axis component referring to technological quality of cane juice. Fuzzy cluster III aggregated the hybrids VX12-0180 and VX12-1022 consisted of higher fiber content. This parameter correlated with the Y-axis component referring to physicochemical quality of lignocellulose. From the PCA-FCM methodology, the conclusion is, therefore, hybrids from fuzzy cluster I prove to be type I energy cane (higher sucrose to fiber ratio) and could serve as energy supply pathways to produce bioethanol, while the hybrids from fuzzy cluster III are type II energy cane (lower sucrose to fiber ratio), denoting potential as higher fiber yield biomass sources to feed cogeneration of heat and bioelectricity in high temperature and pressure furnace-boiler system. Made available in DSpace on 2019-12-03T18:17:30Z (GMT). No. of bitstreams: 1 MayClassifyingHybrids2019.pdf: 650947 bytes, checksum: 8f94b846bec79195d6714c44271b2c06 (MD5) Previous issue date: 2019

The utilization of chemical ripeners is an important tool, since they are applied to accelerate the maturation process, enhance raw material quality, optimize agro industrial and economic results, and help crop planning, allowing essential crop management in a modern production system. The objective of this study was to evaluate agricultural productivity and biochemical characteristics of the sugarcane when submitted to the application of chemical ripeners in different crop years. The experimental design utilized randomized blocks arranged in split split plots. The main plots consisted of the application of the following products with their respective doses: control (C) (without application), sulfomethuron-methyl (0.02 kg ha-1) + glyphosate (0.15 L ha-1) (SG), ethephon (0.34 L h-1) + glyphosate (0.15 L ha-1) (EG), glyphosate (0.35 L h-1) (G), compounds of organic carboxylic radicals (1.0 L h-1) + glyphosate (0.15 L h-1) (CG). The subplots were composed of evaluation times: 0, 15, and 30 days after application of the products. The sub-subplots consisted of two crop years, 2008 and 2009. In the evaluations, the levels of brix levels, pol, reducing sugars, total reducing sugars, fiber, purity, humidity, recoverable theoretical sugar, tons of Culms per hectare and tons of sugar per hectare, shikimic and salicylic acids. The application of CG showed better results for sugarcane technological characteristics on the 30th day after application. 0.35 L ha-1 of glyphosate favored an increase in the concentrations of shikimic and salicylic acids. The application of a mixture of compounds of organic carboxylic radicals + glyphosate presented better results for sugarcane technological characteristics at 30 days after application in the studied crop years. The application of 0.35 L ha-1 glyphosate favored an increase in the concentrations of shikimic and salicylic acids in the crop years of 2008 and 2009. Made available in DSpace on 2019-12-05T18:19:29Z (GMT). No. of bitstreams: 1 MayProductivityBiochemical2019.pdf: 2679145 bytes, checksum: 7dfe3684e3eff5ad521154dfcc61beae (MD5) Previous issue date: 2019

In twenty-first century, free-living endophytic and rhizosphere-competent microbes have become breakthrough strategies to meet global demands for sustainable foods and renewable fuelstocks owing to their great potential to produce stress-tolerant food and energy crops. Here, we investigate how Bacillus aryabhattai could mitigate water stress by drought in sugarcane seedlings. Briefly, the sugarcane genotypes, namely IAC91-1099 and RB85-5156, both exposed to cells-centrifuged B. aryabhattai suspension at 1x108 CFU mL-1 and non-treated were developed under irrigation regimes of 0, 7, 14 and 21 days to simulate different degrees of soil moisture content. The osmotolerant bacterium remarkably enhanced development of aboveground structures and root system, mainly in irrigated seedlings of IAC91-1099. Clearly noted that microbial metabolism depends on genotype and soil water potential to promote plant growth. This bacterium probably enabled sugarcane plants in early phenological stages to cope with water deficit by regulation of plant growth hormones along with solubilization of nutrients. Of particular importance, the bacterium exerted more pronounced effects by conferring drought tolerance at 7 and 14 days irrigation interval, irrespective of sugarcane genotype, which also translated into increased biomass of shoots and roots. Microbial degradation of ethylene precursors exuded in rhizosphere could reasonably explain why B. aryabhattai-associated seedlings developed deeper root systems to uptake water and nutrients and, conse-quently, allocating larger amounts of dry matter to shoots. Collectively, our findings provide relevant insights on the beneficial effects of the cacti-associated B. aryabhattai in alleviating the harmful effects of drought stress in seedlings and contribute to increasing our understanding of the phenotypic outcomes from the interaction be-tween sugarcane genotypes and a beneficial rhizobacterium. Hence, this bacterial inoculant forms a low-cost and ecologically sound strategy to enhancing drought stress tolerance in sugarcane crops planted in water-limited zones in Brazil. -- Resumo: No século XXI, os microrganismos endofíticos e rizosféricos de vida livre tornaram-se estratégias inovadoras para atender às demandas globais por alimentos sustentáveis e por combustíveis renováveis, devido ao seu grande potencial em promover culturas alimentares e energéticas tolerantes a estresses. Nessa pesquisa, investigou-se como o Bacillus aryabhattai pode mitigar a deficiência hídrica em mudas de cana-de-açúcar. Os genótipos de cana-de-açúcar, IAC91-1099 e RB85-5156, ambos expostos ou não a uma suspensão de B. aryabhattai centrifugada, 1x108 UFC mL-1, foram cultivados sob regimes de irrigação de 0; 7; 14 e 21 dias para simular diferentes graus de umidade do solo. A bactéria osmotolerante melhorou notavelmente o desenvolvimento de estruturas aéreas e do sistema radicular, principalmente em mudas irrigadas de IAC91-1099. A bactéria B. aryabhattai, provavelmente, permitiu que as plantas de cana, em fases fenológicas precoces, minimizassem as consequências da deficiência hídrica mediante regulação de fito-hormônios e solubilização de nutrientes. De particular importância, a bactéria exerceu efeitos mais pronunciados ao conferir tolerância à seca em 7 e 14 dias de intervalo de irrigação, independentemente do genótipo da cana-de-açúcar, o que também se traduziu no aumento da biomassa da parte aérea e das raízes. A degradação microbiana dos precursores de etileno presentes na rizosfera poderia explicar, razoavelmente, por que as plântulas associadas a B. aryabhattai desenvolveram sistemas radiculares mais profundos para absorver água e nutrientes e, conseqüentemente, alocar maiores quantidades de matéria seca na parte aérea. Esses resultados fornecem informações relevantes sobre os efeitos benéficos de B. aryabhattai no alívio dos efeitos prejudiciais do déficit hídrico em plântulas e contribuem para aumentar nossa compreensão dos resultados fenotípicos da interação de genótipos de cana-de-açúcar com uma rizobactéria benéfica. Portanto, esse inoculante bacteriano forma uma estratégia ecologicamente correta e de baixo custo para mitigar a tolerância à deficiência hídrica em áreas de cana-de-açúcar plantadas em terras secas. Made available in DSpace on 2019-12-06T18:07:37Z (GMT). No. of bitstreams: 1 MayInductionDrought2019.pdf: 397482 bytes, checksum: 1ae500d8dc4edfd6c5811aef1238e3f5 (MD5) Previous issue date: 2019

Heavy metal-contaminated areas are a recurring problem in a society that increasingly demands fossil fuels, pesticides and fertilizers. Traditional methods to recover these areas are generally very expensive, and phytoremediation can be a solution for their decontamination by removing these contaminants from the soil through the harvest of the plants grown in the affected site, as these elements are extracted from the soil. The harvested part can be used for non-food purposes, such as energy production. In this scenario, the sorghum plant emerges as an alternative owing to its high ability to accumulate biomass in a short time and bioelectricity production potential. This study proposes to examine the use of biomass sorghum for the bioremediation of environments contaminated with the heavy metals Cu and Ni. The experiment was carried out in the municipality of Jaguariúna - SP, Brazil, using four doses of Ni (0, 10.5, 47 and 210 mg kg-1) and Cu (0, 200, 300 and 400 mg kg-1). The sorghum plants exhibited good development even at the highest Cu and Ni doses applied to the soil. The highest levels of Cu and Ni were concentrated in the roots. Biomass sorghum can be indicated for the phytoremediation of environments contaminated with Cu and Ni. -- Resumo: Áreas contaminadas com metais pesados são um problema recorrente em uma sociedade que demanda cada vez mais por combustíveis fósseis, defensivos agrícolas e fertilizantes. Métodos tradicionais de recuperação dessas áreas são geralmente muito onerosos e a fitorremediação pode ser uma solução para a descontaminação desses ambientes, por meio da remoção desses contaminantes do solo, por meio da colheita das plantas cultivadas no local afetado, em função da extração desses elementos do solo. A parte colhida pode ser utilizada para fins não alimentares, como, por exemplo, para a produção de energia. Nessa direção, a planta de sorgo surge como uma alternativa por apresentar uma boa capacidade de acúmulo de biomassa em um curto intervalo de tempo e pelo potencial de produção de bioeletricidade. O objetivo desse estudo foi avaliar o uso do sorgo biomassa para biorremediação de ambientes contaminados com os metais pesados Cu e Ni. O experimento foi conduzido no Município de Jaguariúna/SP, utilizando 4 doses de Ni (0, 10,5, 47 e 210 mg kg-1) e de Cu (0, 200, 300 e 400 mg kg-1). As plantas de sorgo apresentaram um bom desenvolvimento mesmo nas mais altas doses de Cu e Ni aplicadas no solo. Os maiores teores de Cu e Ni foram concentrados nas raízes. O sorgo biomassa pode ser indicado para fitorremediação de ambientes contaminadas com Cu e Ni. -- Resumen: Las áreas contaminadas con metales pesados son un problema recurrente en una sociedad que demanda cada vez más combustibles fósiles, pesticidas y fertilizantes. Los métodos tradicionales de recuperación de estas áreas son generalmente muy caros y la fitorremediación puede ser una solución para la descontaminación de estos ambientes, eliminando estos contaminantes del suelo, cosechando las plantas que crecen en el sitio afectado, debido a la extracción de estos elementos del suelo. La parte cosechada se puede utilizar para fines no alimentarios, como la producción de energía. En este sentido, la planta de sorgo aparece como una alternativa porque tiene una buena capacidad para acumular biomasa en un corto período de tiempo y el potencial para producir bioelectricidad. El objetivo de este estudio fue evaluar el uso de la biomasa de sorgo para la biorremediación de ambientes contaminados con metales pesados Cu y Ni. El experimento se llevó a cabo en la ciudad de Jaguariúna / SP, utilizando 4 dosis de Ni (0, 10.5, 47 y 210 mg kg-1) y Cu (0, 200, 300 y 400 mg kg-1). Las plantas de sorgo mostraron un buen desarrollo incluso con las dosis más altas de Cu y Ni aplicadas al suelo. Los niveles más altos de Cu y Ni se concentraron en las raíces. La biomasa de sorgo puede estar indicada para la fitorremediación de ambientes contaminados con Cu y Ni. Made available in DSpace on 2020-09-15T04:41:03Z (GMT). No. of bitstreams: 1 May-Uso-sorgo-2020.pdf: 480741 bytes, checksum: 184631450370a0ca234390651f45368b (MD5) Previous issue date: 2020