bluuebunny/crossref_metadata_2025 huggingface dataset:
Violência contra mulheres nos livros didáticos de História (PNLD 2018)
Authors: Oliveira Susane Rodrigues de
Published: October 2019

Resumo: No artigo são analisadas as representações de violência contra mulheres em cinco livros didáticos de História, aprovados no PNLD de 2018 para o Ensino Médio. Trata-se de uma abordagem discursiva das representações, atenta à historicidade de suas elaborações, discursos, valores, sentidos e modos de funcionamento no conhecimento histórico a ser ensinado e aprendido nas escolas. A ordem discursiva e epistêmica em que se inscrevem tais representações promove modos de subjetivação e maneiras ver, pensar, sentir e tratar essa violência no tempo presente. Baseando-se em estudos feministas interseccionais, propõe leituras e abordagens possíveis das narrativas didáticas em sala de aula, tendo em vista um ensino de História para o combate à violência contra mulheres.
Em nome de Maya Angelou
Authors: Rodrigues Felipe Fanuel Xavier
Published: October 2019

Resumo: Este artigo se propõe a reavaliar criticamente a segunda obra autobiográfica de Maya Angelou, Gather together in my name (2004 [1974]). Na representação literária de si, Angelou narra sua jornada de vida como uma jovem mulher negra com um filho sem pai, lutando para sobreviver com liberdade na sociedade estadunidense dos anos 1940, marcadamente racista e sexista. Uma leitura atenta à sinuosidade dos fragmentos narrativos revela que Angelou compõe uma variante de uma womanist prose, conforme Alice Walker (1983), identificada como poética de sua verdade autobiográfica, através da qual a escritora examina sua vida interior, incomoda concepções culturais preconcebidas da mulher de ascendência africana e corrige omissões desse sujeito histórico que se autorregenera.
Violencia en Internet contra feministas y otras activistas chilenas
Authors: Soto Cecilia Alejandra Ananías , Sánchez Karen Denisse Vergara
Published: October 2019

Resumen: Este trabajo explora la violencia de género en Internet que afecta a feministas y otras activistas por los DDHH en Chile, entregando una aproximación inicial a un tipo de violencia que se ha encontrado invisibilizada en Latinoamérica, y que recientemente ha demostrado lo peligrosa que puede llegar a ser para la vida de quienes la han sufrido. Para conocer esto, se encuestó a 163 mujeres cishétero y transgénero a través de un cuestionario online, dentro de una metodología de muestreo no probabilístico por conveniencia, como una primera exploración de este tema a nivel nacional. De las activistas consultadas, un 73,6% declaró explícitamente haber sido víctima de este tipo de violencia. Ellas principalmente sufrieron ataques verbales (91,7%), acoso (25,8%), amenazas (22%) y publicación de información falsa (15%). También, un 13,3% declaró que le sustrajeron imágenes de las redes sociales y otro 13,3% recibió imágenes y/o videos sexualmente agresivos, evidenciando, además, la nula preparación de las policías y poder judicial para enfrentar estos hechos, incluso a la hora de denunciar. Además, a través de una aproximación al discurso de los atacantes, se determinó que se trata principalmente de hombres jóvenes y adultos con estudios superiores, quienes utilizan Internet para infundir terror psicológico y una sensación de permanente vigilia hacia las víctimas. Se trata de una problemática urgente que necesita ser abordada como sociedad, para que no se continúe amplificando en medio de la impunidad legal y la reticencia a ser abordada como violencia de género digital por parte de autoridades y ciudadanía.
Reaction of maize hybrids to Northern corn leaf blight and common rust, and chemical control of Northern corn leaf blight
Authors: Camera Juliane Nicolodi , Forcelini Carlos Alberto , Koefender Jana , Golle Diego Pascoal , Schoffel André , Deuner Carolina Cardoso
Published: October 2019

ABSTRACT: Northern corn leaf blight (NCLB) and common rust are among the primary fungal diseases affecting maize production. This study aimed to evaluate the susceptibility of ten maize hybrids to NCLB and to common rust and to verify the efficiency of fungicides in the chemical control of Exserohilum turcicum. In the first experiment, hybrids Pioneer (30F53, P1630H, P2530), Monsanto (AG 8045, AG 9045), Dow AgroSciences (2A550, 2A106 and 2B587) and Syngenta (SYN7205 VIPTERA, SW 3949 TL) were used and in the experiment for effectiveness of fungicides in the control of NCLB. The efficiency of fungicides propiconazole, azoxystrobin, cyproconazole + azoxystrobin, prothioconazole + trifloxystrobin, benzovindiflupir + azoxystrobin, cyproconazole + azoxystrobin + mancozeb were tested in the Pioneer P1630H hybrid. In both experiments, the leaf disease severity (%), yield and the weight of one thousand seeds were evaluated. The experimental design was carried out in randomized blocks with four replicates. The hybrids SYN7205, P2530, SW 3949 TL, 2B587, AG 9045, 2A550, P1630H, 2A106 and AG 8025 showed the smallest areas under the common rust severity progress curve. Hybrids AG9045, 30F53, and 2A550 presented the smallest areas under the NCLB progress curve. Hybrids AG8025, 2B587, P1630H, AG9045, 2A106, 2A550, present the highest yields. The fungicides prothioconazole + trifloxystrobin present the highest chemical control efficiency for NCLB and the lowest area under the disease progress curve (AUDPC).
Lonchaeidae (Diptera) species and their host plants in the Cerrado biome in the state of Piauí, Brazil
Authors: Vieira Francieli Nunes da Silva , Sousa Ester Marques de , Louzeiro Léo Rodrigo Ferreira , Silva Sara Braga e
Published: October 2019

ABSTRACT: Some species of Lonchaeidae (Diptera) are considered frugivorous and polyphagous pests, and are widely distributed in Neotropical regions. The relationship between a fly and its host plant is important for studies on behavior and distribution of frugivorous flies. The objective of this work was to identify the Lonchaeidae fly species and their host plants in the Cerrado biome, specifically in the state of Piauí, Brazil. Eighty-one adults (33 ♀ and 48 ♂) from the genus Neosilba McAlpine (Lonchaeidae), represented by the species Neosilba inesperata Strikis & Prado, Neosilba pendula Bezzi, and Neosilba zadolicha McAlpine, were collected from fruit samples. Oranges [Citrus sinensis (L.) Osbeck] and guava (Psidium guajava L.) had the highest frequencies of infestation. A Neosilba species was considered a primary invader in orange. These results are the first ones reported of Lonchaeidae species and their host plants in the state of Piauí.
Longevity of Apis mellifera workers fed on a diet incorporating entomopathogens
Authors: Colombo Fernanda Caroline , Maciel Rodrigo Mendes Antunes , Libardoni Gabriela , Raulino Fernanda , Lozano Everton Ricardi , Maia Fabiana Martins Costa , Freitas Patrícia Franchi , Neves Pedro Manuel Oliveira Janeiro , Potrich Michele
Published: October 2019

ABSTRACT: The present study had the objective of evaluating the longevity of A. mellifera workers fed on a diet incorporating commercial entomopathogens, Beauveria bassiana, and Bacillus thuringiensis. It also aimed at verifying possible morphological alterations in the midgut. To this purpose, the entomopathogens used were B. bassiana (Product A) (5.0 × 1011 viable conidia.kg-1), B. thuringiensis (Product B) (2.5 × 109 viable spores.g-1), and B. thuringiensis (Product C) (1.0 × 109 viable spores.g-1); and two controls: T1: sterilized distilled water, and T2: sterilized distilled water + Tween 80® (0.01%). For the bioassays, 2 mL of each treatment were incorporated into Candy paste. For each treatment, 80 bees were individually in flat bottom glass tubes (2.5 cm Ø) covered with voile, containing a piece of cotton soaked in water and Candy paste. These tubes were stored in a B.O.D (30 ± 2°C, R.H 70% ± 10%, 12 h), and mortality was evaluated every six hours, for 10 days. Soon after verifying mortality, two bees per treatment were selected for the removal of their midgut. Midgut samples were processed using standard methodology for Scanning Electron Microscopy (SEM). It was verified that products A, B, and C reduced the longevity of bees when compared to T1 and T2 controls. In the qualitative analyses carried out using SEM, it was not possible to observe external or internal morphological alterations to midgut tissues. Although products A, B, and C cause a reduction in longevity, their presence was not verified when tissues were analyzed using SEM.
Herbicide selectivity in pre-sprouted seedlings of ‘CTC14’ sugarcane
Authors: Garcia Mirela Peroni , Hijano Neriane , Chaves Ana Rosália Calixto da Silva , Nepomuceno Mariluce Pascoina , Alves Pedro Luis da Costa Aguiar
Published: October 2019

ABSTRACT: A new sugarcane planting system, using pre-sprouted seedlings (PSS) to replace sugarcane stem fragments, substantiates the hypothesis of this study that there might be seedling toxicity by herbicides that are sprayed at pre-emergence in traditional systems. Therefore, the aim of this paper was to study the selectivity of herbicides applied at pre-planting in PSS. A field experiment was conducted in a randomized block design, using seven treatments and four replications. Herbicides were sprayed and, 24 hours later, the seedlings were planted. At the beggining of seedling development, all herbicide treatments showed phytotoxicity, but the symptoms decreased with the growth and development of seedlings, with no difference in height, stem diameter, number of leaves, quantum efficiency of PSII (Fv/Fm) and dry matter of plants between treatments. There was also no significant difference in the yield and technological characteristics of stems. All herbicides used were selective to sugarcane seedlings when applied at pre-planting in the PSS system.
Risk factors associated with leptospirosis in swine in state of Pernambuco, Brazil
Authors: Santos Cleber Vinicius Brito dos , Mathias Luis Antônio , Feitosa Paulo Jedyson da Silva , Oliveira Júnior Mario Baltazar , Pinheiro Júnior José Wilton , Brandespim Daniel Friguglietti
Published: October 2019

ABSTRACT: Leptospirosis is a major public health threat, and swine are one of the most important reservoirs and sources of Leptospira infection for man. The aim of this study was to investigate the epidemiological situation of leptospirosis in swine in the state of Pernambuco, Brazil. Blood samples from 265 swine were collected and tested by the microscopic agglutination test (MAT), and an epidemiological form containing questions about animal production characteristics, reproductive management, and sanitary and hygiene aspects of the herd was applied to evaluate infection risk factors. The data were analyzed by means of a logistic regression model. An occurrence of 53.1% (143/265) of swine positives to Leptospira spp. was observed. The most commons serovars were Icterohaemorrhagiae (39.1%), Pomona (25.9%), and Shermani (14.0%). Factors associated with the infection were stagnant water source (p = 0.034, odds ratio - OR = 2.29; confidence interval of 95% - 95%CI 1.06-4.93), farms where the healthy animals are bred with sick ones (OR = 1.69; 95%CI 1.04-2.75), and the properties with flooded areas (OR = 1.65; 95%CI 1.01-2.68). The risk factors found in this study played an important role in the agent dissemination and should be avoided in a way to control the disease in the herds studied.
Metacercariae of Austrodiplostomum spp. (Digenea: Diplostomidae) infecting the eyes and brains of fish in Brazilian Amazon
Authors: Lima Márcio Jonathan Soares , Veiga Renato Pastor , Sousa Luciclara Ferreira de , Santana Maxwell Barbosa de , Oliveira Marcos Sidney Brito , Tavares-Dias Marcos , Corrêa Lincoln Lima
Published: October 2019

ABSTRACT: The aim of this paper was to report the occurrence of Austrodiplostomum spp. in the eyes and brain of Acaronia nassa, Caquetaia spectabilis, Satanoperca acuticeps, Curimatella sp. and Crenicichla marmorata in a lake of the Amazon River system in the state of Pará (Brazil). Of 49 fish examined, 10.2% were parasitized by Austrodiplostomum spp. metacercariae, and A. nassa was the host with higher number of metacercariae. In five examined fish species, a total of 51 metacercariae were collected, with 45 found in the eyes and 6 in the cranial vault. In the eyes, the metacercariae were free and active in the vitreous humor, but no opacification was observed. In the brain, the metacercariae were also free and active, and located mainly below the encephalon, on the cranial floor, at the height of the ophthalmic lobes and near the optic nerve. In laboratory observations, however, the infected fish did not exhibit any behavioral disorders, and this may be related to the low level of parasitism. This was the first report of this digenean for C. spectabilis, S. acuticeps, Curimatella sp., C. marmorata and A. nassa.
Sanitary and physiological quality of ‘purple’ corn (Zea mays L.) seeds submitted to thermotherapy
Authors: Vieira Hugo , Martins João Victor da Silva , Barreto Gabriel Ginane , Gomes Rommel dos Santos Siqueira , Silva Edcarlos Camilo , Nascimento Luciana Cordeiro
Published: October 2019

ABSTRACT: The use of seeds with good sanitary and physiological potential ensures the establishment of the crop, with a uniform, vigorous and disease-free seedling stand, which will result in good productivity levels. Seen that, the objective was to evaluate the sanitary and physiological quality of purple corn seeds (Zea mays L.) submitted to thermotherapy. They were subjected to heat treatment with immersion in sterile distilled water (SDW) heated at 50, 60 and 70 °C for 1, 2, and 3 minutes. The control (0 min) correspondens only to immersing the seeds in SDW, which were submitted to sanitary and germination tests in a completely randomized experimental design, in a factorial arrangement 3 × 3 + 1 (exposure time × temperature + additional control). Data were subjected to analysis of variance, and the means were compared with the Scott-Knott test up to 5% of probability, with the aid of the statistical program SISVAR®. Immersing Zea mays seeds in hot water at 50, 60 and 70 °C for 1, 2, and 3 minutes is efficient to prevent the increased incidence of Aspergillus sp., Penicillium sp., and Fusarium sp. The heat treatment at 60 °C for 1 and 2 minutes of immersion reduces the incidence of fungal mycoflora without impairing the physiological quality of seeds.
Floral visitors of canola (Brassica napus L.) hybrids in Cerrado Mineiro region, Brazil
Authors: Fuzaro Leandro , Andaló Vanessa , Carvalho Stephan Malfitano , Silva Flávia Andrea Nery , Carvalho Fabio Janoni , Rabelo Laíce Souza
Published: October 2019

ABSTRACT: The objective of this study was to verify floral visitors of canola in the Triângulo Mineiro region, Minas Gerais, Brazil. A completely randomized plot design with two hybrids and 10 replicates was used, totaling 20 plots. The survey of floral visitors was made during 10 days. Faunal analyses of the collected species were performed based on frequency, constancy, dominance, and diversity. A total of 2,676 individuals belonging to 13 species of bees of two families (Apidae and Halictidae) were collected. The diversity index found among hybrids was similar (1.28 in hybrid 61 and 1.50 in hybrid 433). The species Apis mellifera Linnaeus, 1758 (Hymenoptera: Apidae), Paratrigona lineata (Lepeletier, 1836) (Hymenoptera: Apidae), and Trigona spinipes (Fabricius, 1793) (Hymenoptera: Apidae) were the most abundant and constant in the crops during all the evaluated days for both hybrids. So, it is important that efforts be made to conserve natural areas close to crops in order to provide resources for the permanence of floral visitors in the area.
CHARACTERIZATION OF SEXUAL VIOLENCE IN A STATE FROM THE SOUTHEAST REGION OF BRAZIL
Authors: Kataguiri Lidieine Gonçalves , Scatena Lúcia Marina , Rodrigues Leiner Resende , Castro Sybelle de Souza
Published: October 2019

ABSTRACT Objective: to verify the association between victims of sexual violence and the sociodemographic aspects related to exposure in the state of Minas Gerais, Brazil. Method: an ecological study, where the database of the Sistema de Informação de Agravos de Notificação, SINAN provided by the Minas Gerais State Health Department was used. Data were analyzed using descriptive statistics, the chi-square test, and Multiple Correspondence Factor Analysis (p≤0.05). Results: stepfathers were the predominant offenders, associated with schooling from 0 to 4th grade, brown-skinned ethnicity, and the residence as place of occurrence. When the offender was the father, there was association with an unknown place of occurrence, followed by the residence, abuse of male children between 0 and 9 years old, and living in municipalities from 200 to 500 thousand inhabitants. Stranger aggressors were associated with white female victims aged 15 years old or over, schooling between 5th grade and higher education, single act of sexual violence, in which physical violence was used and occurrence on public roads. Conclusion: sexual violence affects mainly women and children, the former being attacked on public roads and the latter in their own home environment by a known offender.
Railway photography and technology: analysis of the photographic record of Brazilian railway in the 19th century
Authors: Oliveira Eduardo Romero de
Published: October 2019

ABSTRACT The purpose of this text is to examine some sets of photographs about railway companies in Brazil, in order to highlight the potential of this type of iconographic material, not as artistic documentation but also technological documentation. We deal in particular with a collection of 6,000 photographs gathered by companies such as Companhia Paulista, Companhia Mogiana and Estrada de Ferro Sorocabana, which was deposited in the Museu da Companhia Paulista, in Jundiaí. These images were cataloged in 2014 by the RFFSA Inventory and IPHAN - within the attributions established to them by Law 11483/2007 - and then transferred to the Public Archive of the State of São Paulo. Although some images eventually had aesthetic quality, our first hypothesis is that the main reason for its production seems to have been technical: record of rolling stock or the evolution of construction work; therefore, this would be a routine activity in the companies that would explain the great volume of photographic material still existing. Secondly, we believe that the same material could be dealt with from the historical perspective of the technique and technology as an expression of technical-scientific knowledge and, often, by rules of machine representation and geographical space - although the pictorial tradition is not absent. This would demonstrate a potential for analysis of this type of iconographic material, where an interpretation proposed by the history of technology may not only enrich or complement studies of the history of photography, but also explore the importance of visual representation in technical-scientific knowledge.
Prone position and extracorporeal membrane oxygenation in acute respiratory distress syndrome
Authors: Dalmedico Michel , Ramos Débora , Hinata Paula , Alves Waleska , Carvalho Chayane , Avila Juliana
Published: October 2019

Abstract Introduction: The acute respiratory distress syndrome is an inflammatory process originated by some pulmonary diseases, resulting in non-hydrostatic protein edema of the pulmonary parenchyma. The loss of the lung ability to eliminate carbon dioxide generates complications such as refractory hypoxemia, decreased alveolar dysplasia, increased complacency and hypercarbia. The treatment of acute respiratory distress syndrome, consist in measures to prevent lung diseases progression and optimize oxygenation. Objective: To identify, in the international scientific literature, cases or series of cases reporting the combined application of prone position and extracorporeal membrane oxygenation in patients with severe acute respiratory distress syndrome, as well as the benefit of these rescue therapies. Method: This is a systematic review of case reports that show the benefit of combined therapies in the treatment of patients with acute respiratory distress syndrome. Results: From the research strategy and selection criteria were included 8 studies reporting 19 cases of patients with acute respiratory distress syndrome who received the combination of the two rescue therapies. All studies showed that extracorporeal membrane oxygenation was the primary intervention. There were no reports of adverse events. Conclusion: The combinations of therapies positively interfere on the prognosis of patients with acute respiratory distress syndrome, in addition to presenting no additional risks in terms of the occurrence of adverse events; however, the prone position should precede the extracorporeal membrane oxygenation as first-line intervention. PROSPERO Registration No. CRD42018093076
Evaluation of quality of life, depression and satisfaction in patients treated at the Physiotherapy teaching clinic of the State University of Northern Paraná (Uenp)
Authors: Orsini Jéssica Maria Marcusso , Silva Joyce Karla Machado da , Virmond Marcos da Cunha Lopes , Araujo Camila Costa de
Published: October 2019

Abstract Introduction: Patient satisfaction is an important indicator of care quality and can be used to set goals and identify areas for improvement. Objective: To evaluate the satisfaction, quality of life and depressive symptoms of patients at the Uenp (State University of Northern Paraná) Physiotherapy teaching clinic. Method: Cross-sectional, quantitative descriptive study. Sixty-one patients completed a sociodemographic questionnaire, the “Instrument to assess patient satisfaction with physical therapy in the public health system”, the short-form-36 health survey (SF-36) to evaluate quality of life, and the Beck Depression Inventory (BDI) to determine the presence of depression. For statistical analysis, data were described using means and standard deviations, the Shapiro-Wilk test was applied to assess normality, and the variables were analyzed by Pearson’s correlation coefficient, with p ≤ 0.05 considered statistically significant. Results: The patient-therapist relationship was largely classified as “excellent”; the most common response for the item “respect and interest shown to patients” was also “excellent”. Patients scored well on the SF-36, indicating good quality of life; the highest scores were obtained in the “mental health” domain (65.04 ± 23.25). Regarding the depression, most patients (52.44%) displayed depressive symptoms. Correlation between satisfaction and the BDI showed a statistically significant difference in twelve dimensions. Comparison between the SF-36 and BDI indicated a statistically significant difference in eight domains. Conclusion: Patients are satisfied with the treatment received and the competence of the health care team at the clinic.
Tematização e problematização: pressupostos freirianos no currículo cultural da educação física
Authors: Santos Ivan Luis dos , Neira Marcos Garcia
Published: October 2019

Resumo O presente artigo tem como objetivo analisar as influências do pensamento de Paulo Freire no currículo cultural da educação física, especialmente no que se refere à tematização e à problematização da ocorrência social das práticas corporais na escola. Verificou-se que o legado freiriano representa uma mudança paradigmática no que concerne aos temas de ensino a serem tratados nas aulas de educação física. Além disso, a partir dos efeitos político e pedagógico de uma educação dialógicoproblematizadora, o currículo cultural da educação física pode contribuir para a desconstrução das representações hegemônicas que, em grande parte, operam a discriminação social com relação às práticas corporais e seus sujeitos.
Fontes para escrita da história da juventude feminina: diálogos entre diários de Helena Morley e Bernardina Constant
Authors: Gouvea Maria Cristina Soares de
Published: October 2019

Resumo O artigo analisa o uso de diários na escrita da história da juventude, estabelecendo um diálogo entre dois documentos produzidos por autoras brasileiras na transição da infância para a idade adulta nos últimos anos do século XIX. Tem-se em vista, por um lado, apreender as condições de produção, guarda e publicação e as estruturas dos relatos; por outro, busca-se analisar a experiência social das autoras, considerando a identidade geracional e de gênero, a condição sociorracial e o pertencimento familiar. Através do estudo dos diários é possível apreender as possibilidades e limites da participação na vida social da juventude feminina do período, resgatando as singularidades de cada registro.
Sentidos atribuídos pelos professores de séries iniciais aos desafios na carreira docente
Authors: Guisso Luciane , Gesser Marivete
Published: October 2019

Resumo O objetivo deste estudo foi o de compreender, junto aos professores dos anosiniciais do ensino fundamental, os sentidos atribuídos aos desafios na carreiradocente. Doze docentes participaram de um grupo focal realizado em uma escolapública. Seus relatos foram gravados em áudio e vídeo e analisados por meio datécnica de núcleo de significação, utilizando-se como referencial teórico aperspectiva da psicologia histórico-cultural. Os dados obtidos evidenciaram que acarreira docente é vivenciada com sentimentos de prazer e angústia. Os docentes sesentem desvalorizados no exercício da profissão, tanto pelo baixo salário recebidocomo pelas interações que estabelecem com os estudantes, sentidas como muitocomplexas e desafiadoras. Comentam que sua saúde tem sido afetada, levando-oscada vez mais a buscar auxílio de especialistas e medicação para lidar com asquestões do trabalho.
Ontoepistemologia Ambiental: vestígios e deslocamentos no campo dos fundamentos da educação ambiental ,
Authors: Pereira Vilmar Alves , Freire Simone Grohs , Silva Márcia Pereira da
Published: October 2019

Resumo O estudo apresenta ao campo dos fundamentos da educação ambiental algunsprincípios para sustentar a necessidade de reconhecimento de epistemologiasontológicas que contemplem leituras em educação ambiental centradas em nossotempo. Desse modo, procura demonstrar como a racionalidade ocidental, buscandofirmar-se, cindiu o ser no bojo de suas epistemologias através de dualismos.Posteriormente apresentam-se os vestígios atuais de um deslocamento da ciênciapositiva para um modo de pensar a ciência que reconhece a dimensão ontológicado ser, considerando a temporalidade histórica de Heidegger e a linguagem deGadamer. Espera-se que este texto seja o início para pensar possibilidades de umdebate ontoepistemológico para a educação ambiental.
SUPPRESSION OF Urochloa brizantha AND U. ruziziensis BY GLYPHOSATE UNDERDOSES
Authors: LIMA SUZETE FERNANDES , PEREIRA LEANDRO SPÍNDOLA , SOUSA GUSTAVO DORNELES DE , OLIVEIRA GUSTAVO SILVA DE , JAKELAITIS ADRIANO
Published: October 2019

ABSTRACT Intercropping of Urochloa species with corn is an alternative to enable the no-tillage system, besides influencing weed community. Therefore, the investigation of underdoses of the herbicide glyphosate to manage grasses in intercropping systems, avoid grain yield losses, and make feasible intercropping in agricultural areas is important. This study aimed to evaluate glyphosate underdoses in the suppression of Urochloa brizantha cv. Marandu and Urochloa ruziziensis and weed control. Two tests were conducted under field conditions in a randomized block design with four replications and eight treatments consisting of increasing glyphosate doses (0, 54, 108, 270, 378, 540, 756, and 1.080 g a.e. ha−1). All treatments received a dose of 1.200 g a.i. ha−1 of atrazine. Evaluations of phytointoxication of brachiaria plants were carried out at 7, 14, 21, and 28 days after application. Moreover, total dry matter, leaf dry matter, stem dry matter, leaf to stem ratio, and canopy height of brachiaria plants and density and dry matter production of weed community were evaluated at 80 and 125 days after sowing. Glyphosate underdoses lower than 238 and 105 g a.e. ha−1 have potential to be investigated aiming at the management of U. brizantha cv. Marandu and U. ruziziensis, respectively.
GENETIC DIVERSITY OF ISOLATES OF Colletotrichum spp. IN BANANA
Authors: SILVEIRA AMANDA LETÍCIA DA , SOARES MARIA GILMARA DE OLIVEIRA , LOPES LUCAS SILVEIRA , STRACIERI JULIANA , ALVES EDUARDO
Published: October 2019

ABSTRACT Colletotrichum spp. is a pathogenic fungus of great importance in banana cultivation since it affects the fruit both in the field and in the post-harvest period, depreciating its commercial value. Although this disease is widely distributed in regions of banana cultivation, the different levels of aggression suggest the existence of genetic variability among Colletotrichum spp. isolates. The objective of the present study was therefore to verify the genetic diversity of Colletotrichum spp. in banana fruits presenting anthracnose symptoms using both molecular marker ISSR and morphological characterization. We obtained 30 isolates of the fungus from banana fruits from different states of Brazil and performed molecular characterization with five primers using the ISSR-PCR technique. The results were used to construct a dendrogram, relating the isolates according to their genetic proximity. The morphocultural characterization was performed by analyzing colony coloration and growth rate. These methods allowed us to reveal genetic and morphocultural variability among isolates.
EXOTIC ARBUSCULAR MYCORRHIZAL FUNGI AND NATIVE DARK SEPTATE ENDOPHYTES ON THE INITIAL GROWTH OF Paspalum millegrana GRASS
Authors: GOIS LARISSA DE SOUZA , MENDONÇA JOHNY DE JESUS , TEIXEIRA JUAN LOPES , PRADO CAROLINA MANGIERI DE OLIVEIRA , HOLANDA FRANCISCO SANDRO RODRIGUES , MARINO REGINA HELENA
Published: October 2019

ABSTRACT Arbuscular mycorrhizal fungi (AMF) and dark septate endophytic fungi (DSE) promote increase in plant biomass, depending on the soil and climate conditions and the interactions with the host plant. The objective of this study was to evaluate the interaction of exotic arbuscular mycorrhizal fungi and native DSE fungi on the initial growth of P. millegrana. A completely randomized experimental design comprising the Paspallum millegrana cutilvar with the following treatments: control - without AMF, and three exotic AMF isolates (UFLA351 - Rhizoglomus clarum, UFLA372 - Claroideoglomus etunicatum and UFLA401 - Acaulospora morrowiae), with four replications each. P. millegrana grass was colonized by exotic AMF by R. clarum (UFLA351, 11.9%), C. etunicatum (UFLA372, 39.6%), and A. morrowiae (UFLA401, 51.2%). P. millegrana was also colonized by native DSE fungi, but these did not interfere with the colonization by exotic AMF and plant development. P. millegrana is responsive to the inoculation of UFLAs isolates of exotic AMF, which may contribute to the grass growth and survival under field conditions. The process of surface disinfestation of seeds does not eliminate endophytic microorganisms, whose presence may influence plant colonization by AMF, as well as development of the host plant.
GENETIC GAINS IN THE POPCORN POPULATION UENF-14: DEVELOPING THE NINTH GENERATION OF INTRAPOPULATION RECURRENT SELECTION
Authors: GUIMARÃES AMANDA GONÇALVES , AMARAL JÚNIOR ANTÔNIO TEIXEIRA DO , PENA GUILHERME FERREIRA , ALMEIDA FILHO JANEO EUSTÁQUIO DE , PEREIRA MESSIAS GONZAGA , SANTOS PEDRO HENRIQUE ARAÚJO DINIZ
Published: October 2019

ABSTRACT The occurrence of negative correlations between grain yield (GY) and popping expansion (PE) in popcorn complicates the selection process. In an attempt to overcome this inconvenience, we proposed the use of the importance characteristic volume per popcorn per hectare (PV). The objectives of this study were to develop the ninth cycle of the UENF-14 popcorn population, to estimate the direct and indirect effects of PV and to verify the genetic progress among all selective cycles. We obtained and evaluated 200 inbred progenies in randomised blocks arranged in replicates within sets, with nine sets consisting of 25 progenies and one set with all previous eight cycles with three replicates. The average height of the plants, prolificacy, 100-grain weight, grain yield, grain popping expansion and volume per popcorn per hectare were evaluated. Track analysis was performed to determine the direct and indirect effects, and the Mulamba and Mock selection index was calculated for the selection of the 40 superior progenies. There was genetic variability among progenies in all evaluated traits, with a cause-and-effect relationship between PV with GY and PE, allowing simultaneous gains with indirect selection. The selection of the best progenies was more effective when using arbitrarily assigned weights, which provided higher predicted gains for PV (20.73%). The means obtained in all cycles indicated increases, demonstrating the efficiency of using continuous recurrent selection in popcorn breeding programs.
PHYSIOLOGICAL CHARACTERIZATION OF DIAZOTROPHIC BACTERIA ISOLATED FROM Brachiaria brizantha RHIZOSPHERE
Authors: TERRA ANA BEATRIZ CARVALHO , SOUZA FLÁVIA ROMAM DA COSTA , MANTOVANI JOSÉ RICARDO , REZENDE ADAUTON VILELA DE , FLORENTINO LIGIANE APARECIDA
Published: October 2019

ABSTRACT The objective of this study was to evaluate the ability of diazotrophic bacteria isolated from Brachiaria brizantha rhizosphere to grow at different pH values and salt concentrations, to produce indoleacetic acid (IAA), and to solubilize phosphate. Both acidity and salinity tolerance tests were performed on modified solid FAM medium. Acidity resistance tests were performed at pH values of 4.0, 5.0, 6.0, and 7.0, while, salt resistance was evaluated at concentrations of 0.01, 5.02, 9.99, 14.96, 19.98, 24.95, 29.98, 34.94, 39.97, 44.94, and 49.96 gL-1 NaCl. For the IAA production assay, bacterial strains were cultivated in liquid DYGS medium both in the absence and presence of tryptophan (Trp). In addition, phosphorus solubilization assay was performed in GL liquid medium. All strains grew at every pH value tested, and a high diversity was observed after salt resistance, IAA production, and phosphate solubilization testing. Strains UNIFENAS 100-51, UNIFENAS 100-52, UNIFENAS 100-60, UNIFENAS 100-63, and UNIFENAS 100-65 were those with the best growth at the highest salt concentrations. Furthermore, in the presence of Trp, strains UNIFENAS 100-63 and UNIFENAS 100-69 were the ones with the highest IAA production. Strain UNIFENAS 100-52 showed the best response to the in vitro phosphate solubilization assay. Based on these results, it can be seen that studies related to the physiological and metabolic characteristics of diazotrophic bacterial strains are important to ensure greater success in the field.
YIELD AND BIOMETRIC CHARACTERISTICS OF MAIZE SUBMITTED TO PLANT POPULATION AND TRINEXAPAC-ETHYL DOSES
Authors: PRICINOTTO LUIZ FERNANDO , ZUCARELI CLAUDEMIR , FERREIRA ANDRÉ SAMPAIO , SPOLAOR LEANDRO TEODOSKI , FONSECA INÊS CRISTINA DE BATISTA
Published: October 2019

ABSTRACT The use of plant growth regulators in agriculture can alter the morphology of corn plants, increasing crop yield due to the possibility of increasing the population. This study aimed to evaluate the effects of plant populations associated with trinexapac-ethyl (TE) doses on the biometric characteristics of shoot and grain yield of contrasting corn cultivars regarding plant architecture. Experiments were conducted in the field during two seasons with the hybrids 2B710 HX (flat leaf) and TL Status (erect leaf) in a randomized block design (four replications) and treatments in a 5 × 5 factorial scheme, with five plant populations (40, 60, 80, 100, and 120 thousand plants ha−1) and five TE doses (0, 100, 200, 300, and 400 g a.i. ha−1) applied by foliar spraying at the V6 stage. Plant height, ear insertion height, stem diameter, leaf area index, and grain yield were evaluated. An increment in population increases plant height, ear insertion height, and the leaf area index, but reduces stem diameter. The plant growth regulator TE reduces plant height and ear insertion height. The interaction between plant population and TE favors corn yield, with the highest values observed in combinations of 93.4 thousand plants ha−1 with a dose of 176 g ha−1 of TE for the hybrid 2B710 HX and 92.2 thousand plants ha−1 with a dose of 251 g ha−1 of TE for the hybrid Status TL.
THERMOTHERAPY AS A MICROBIAL CONTAMINANT-REDUCING AGENT IN MICROPROPAGATION OF BAMBOO
Authors: TORRES GUSTAVO RUBENS DE CASTRO , COUTINHO FLAVIA PAIVA , ARAÚJO BIANCA GALÚCIO PEREIRA , ABREU GIOVANNA PEREIRA DE , SALES JÚNIOR RUI
Published: October 2019

ABSTRACT The aim of the research was to evaluate the effectiveness of thermotherapy by humid heat of nodal segments to reduce the incidence of microbial contaminants in the introduction phase of the in vitro propagation of Bambusa vulgaris. Two independent experiments were carried out in a completely randomized design using a 4 × 2 factorial arrangement, four levels of temperature (25, 30, 40 and 50 °C) versus two treatment time intervals (5 or 10 min). Each treatment was composed of nine replications, corresponding to one single-nodal segment obtained from primary or secondary branches, in sucrose-free Murashige and Skoog medium with half the concentration of salts, supplemented with 6.5 g L-1 agar, 50 mg L-1 citric acid, 50 mg L-1 ascorbic acid, 200 mg L-1 chloramphenicol and 2 mg L-1 N6-benzylaminopurine. Isolation of prevalent mold fungi per repetition was conducted, and identification at genus level obtained from microcultures. The treatments corresponding to 50 °C for 5 or 10 min reduced significantly the fungal contamination that occurred at 11% and 0%, respectively, in nodal segments from primary branches, and 0% and 11%, respectively, in those from secondary ones. Fungi of genera Alternaria, Bipolaris and Curvularia were isolated from both types of segment, and Cladosporium from secondary branches only. The lowest percentages of mycelial growth detected in nodal segments submitted to both binomials demonstrated the effectiveness of the technique to reduce fungal contamination despite negative interference on sprouting.
AGRONOMIC POTENTIAL AND GENETIC DIVERSITY OF LANDRACES OF COWPEA OF THE STATE OF CEARÁ
Authors: ARAÚJO LINDA BRENNA RIBEIRO , PINHEIRO MARCELO DE SOUSA , FIEGE LEONARDO BARROS DA COSTA , BERTINI CÂNDIDA HERMÍNIA CAMPOS DE MAGALHÃES , DOVALE JÚLIO CÉSAR
Published: October 2019

ABSTRACT Landraces are sources of genetic variability, especially with respect to alleles that confer tolerance to biotic and abiotic factors and, therefore, can aid breeding programs in the development of promising cultivars. However, it is necessary to know this genetic patrimony at a level that allows its alleged use in breeding programs. In this sense, the objective of this study was: (i) to identify cowpea landraces that present agronomic potential and (ii) to evaluate the genetic diversity for future cross-breeding. For this, two trials (coastal and sertão of the state of Ceará) were carried out in distinct periods for the morphological and agronomic characterization of eight landraces of the state of Ceará plus two control cultivars. Both assays were conducted in a randomized complete block design with four replicates. Additionally, the molecular characterization by ISSR markers was done. Due to the presence of interaction genotypes by environments, it was observed for the conditions of the coast (Fortaleza), the traditional variety Boi Deitado and the conditions of the sertão (Madalena) to Vinagre Barrigudo de Caldo, as the most indicated to be superior in grain yield and in other agronomic characters. In order to increase the genetic base of the cowpea, we suggest crosses between genotypes Boi deitado and Cojó for the generation of segregating populations of future breeding programs.
BIOLOGICAL FERTILIZER AND COVER PLANTS ON SOIL ATTRIBUTES AND MAIZE YIELD
Authors: ASCARI JOÃO PAULO , ARAÚJO DEJÂNIA VIEIRA DE , MENDES INÊS ROEDER NOGUEIRA , DALLACORT RIVANILDO , MATSUMOTO LEOPOLDO SUSSUMU
Published: October 2019

ABSTRACT Maize is an important crop for Brazil's economy. This species is, in general, grown as monoculture, making it necessary the use of conservationist practices for soil management and to favor crop development. The objective of this study was to evaluate the effects of biological fertilizer and cover plants on soil properties and maize yield. The experiment was conducted in a dystrophic Latossolo Vermelho (Oxisol), in the 2015-2016 and 2016-2017 crop seasons in Tangará da Serra, MT, Brazil. The experiment was conducted in a randomized block design, using a double factorial arrangement with an additional control: two biological fertilizer conditions, three soil cover conditions, and a control (forest fragment). Seeds of Pennisetum glaucum and Crotalaria ochroleuca were sowed on October 2015 and 2016. Maize seeds were sowed on December 2015 and 2016, with subsequent application of 150 L ha-1 of biological fertilizer. The soil cultivated with maize had greater chemical quality than that under the forest fragment, however, the forest fragment soil had greater microbiological quality. The use of biological fertilizer and cover plants increased the fertility and microbiological quality of the soil cultivated with maize. The use of cover plants increased the maize yield in both crop seasons. The use of biological fertilizer and soil cover plants (P. glaucum and C. ochroleuca) improved the soil chemical and microbiological quality.
EFFECT OF DIFFERENT FOREST MANAGEMENT PRACTICES ON THE SOIL MACROFAUNA IN THE ARBOREAL CAATINGA
Authors: MATOS PRISCILA SILVA , BARRETO-GARCIA PATRÍCIA ANJOS BITTENCOURT , SCORIZA RAFAEL NOGUEIRA
Published: October 2019

ABSTRACT Forest management can lead to numerous changes of different magnitudes in the composition and diversity of soil organisms, according to the level of interference with the habitat. Within this context, this study aimed to test the influence of different types of forest management on the edaphic macrofauna community in a region of arboreal Caatinga. The study was carried out in Contendas do Sincorá National Forest, Contendas do Sincorá - Bahia. The experimental area consisted of three types of management (clear cutting, selective cutting by diameter at breast height and selective cutting by species), and a condition of unmanaged Caatinga, which was used as control. The macrofauna was sampled twice a year (March and November) using the soil monolith method. Densities, total number of individuals, total richness, average richness, and Shannon and Pielou rates were estimated. The soil macrofauna was shown to be sensitive to different forest management practices, which indicates that selective cutting is a more conservative system to manage the Caatinga. Among these, selective cutting by species proved to be less impacting on the soil macrofauna, providing more expressive diversity and abundance indexes, and the occurrence of more demanding organisms in microclimate conditions, characteristic of preserved areas. The predominant groups of edaphic fauna, both in the unmanaged as in managed Caatinga, were Isoptera, Formicidae, Chilopoda, and Coleoptera Larvae.
MORPHOMETRIC DESCRIPTORS AND PHYSIOLOGICAL SEED QUALITY FOR SELECTING Aspidosperma pyrifolium Mart. MATRIX TREES
Authors: CORREIA LUIZ AUGUSTO DA SILVA , FELIX FRANCIVAL CARDOSO , ARAÚJO FERNANDO DOS SANTOS , FERRARI CIBELE DOS SANTOS , PACHECO MAURO VASCONCELOS
Published: October 2019

ABSTRACT Aspidosperma pyrifolium Mart. (Apocynaceae) is a tree species with high ecological and economic potential. Therefore, the need to select trees for producing high-quality seeds is evident. In this sense, the objective of this study was to select A. pyrifolium matrices based on the morphometric descriptors of fruits and seeds and the physiological quality of seeds from a natural population. For this, 11 A. pyrifolium trees were selected, and their fruits and seeds were submitted to biometric analysis; in addition, the physiological quality of the seeds was evaluated. The morphometric characteristics of fruits and seeds and the physiological quality of the seeds evidenced differences and variations among the seeds of the different A. pyrifolium trees, making it possible to group them according to the similarity degree. Thus, seven trees were selected as seed matrices based on superior physiological quality and genetic dissimilarity.
TEMPORAL STABILITY OF TOTAL ORGANIC CARBON OF SOILS UNDER DIFFERENT USES IN THE CAATINGA BIOME
Authors: LOURENÇO VALÉRIA RAMOS , COSTA CARLOS ALEXANDRE GOMES , ALMEIDA ALDÊNIA MENDES MASCENA DE , PEREIRA FRANCISCO JAIRO SOARES , MORAIS ADÃO BARROS DE
Published: October 2019

ABSTRACT The objective of this work was to evaluate the temporal stability of total organic carbon (TOC) of soils under different uses in areas with Caatinga vegetation. The experiment was conducted in an experimental farm that encompasses a watershed in the Curu River Valley, in Pentecoste, state of Ceara, Brazil. Soil samples were collected in two areas with Caatinga vegetation under different uses-one with a 35-year preserved area (CP35) and one with a 30-year pasture area (CR30)-and the sampling points were distributed using a 30×30 m uniform grid. Soil samples of the 0-0.2 m layer were collected between February 2016 and April 2017 to determine TOC; and nonparametric Spearman's correlation, mean relative difference (MRD), and temporal stability index (TSI) tests were applied to evaluate TOC stability. The Spearman's test showed a higher correlation between collection dates for CR30 than for CP35. The DRM showed more points with relative differences approaching zero for CP35, and more points with lower standard deviation for CR30. The TSI indicated a greater number of points to be used for CR30 because they have better temporal stability. Therefore, the TOC of the CR30 has better temporal stability than that of the CP35, presenting TSI of approximately 1.5-fold that of the CP35. The thinning of the vegetation in CR30 homogenized the soil TOC, whereas the fallow area, which were preserved, had greater heterogeneity.
WATERMELON YIELD AND EFFICIENCY OF USE OF WATER AND NITROGEN
Authors: PEREIRA LAÉRCIO DA SILVA , SILVA EVERALDO MOREIRA DA , FERREIRA JOSÉ ORLANDO PIAUILINO , SANTOS VINÍCIUS LEMOS GUERRA , LIMA CARLOS JOSÉ GONÇALVES DE SOUZA , SILVA JÚNIOR GABRIEL BARBOSA DA
Published: October 2019

ABSTRACT The evaluation of the yield of crops and their efficiency of use of water and nitrogen is essential to optimize the management of production factors. The objective of this study is to evaluate the effect of irrigation regimes and nitrogen doses in fertigation on fruit yield and efficiency of use of water and nitrogen by the Top Gun watermelon hybrid. The study was conducted in Bom Jesus, Piauí, Brazil, from August 4 to October 15, 2015. The study used a completed randomized block design with four repetitions, five irrigation depths (110.17, 156.86, 221.16, 268.87, and 317.09 mm), and five doses of nitrogen in fertigation (0, 50, 100, 150, and 200 kg ha-1 applied as urea). Fruit yield and water use efficiency were not affected by nitrogen doses; however, there was a significant interaction of the factors for the efficiency of nitrogen use. The highest yield (39,549.45 kg ha-1) was obtained using 233.48 mm of water during the growth cycle. The water depth that promoted the maximum efficiency of water use was 110.42 mm, and nitrogen use was most efficient using 232.21 mm of water and 50 kg ha-1 of nitrogen.