Educação em saúde: abordagem do tema drogas em livros didáticos de biologia

Our goal is to analyze the approaches on drugs in didactic books of biology. The research is of a qualitative approach and it uses the content analysis as a referential. We realized that the majority of the texts are of biomedical approach with only one of behavioral approach, and two of socio ecological approach. There are also parts identified with more than one perspective, in addition to a mistake in the definition of a fungus species. We highlight the importance of expanding the approaches related to the topics of health and drugs in didactic books without restricting itself to the processes of sickness of the body.Nuestro objetivo es analizar cómo se aborda el tema drogas en los libros didácticos de biología. Esta investigación presenta un enfoque cualitativo y utiliza el marco de análisis de contenido. A partir del análisis nos dimos cuenta de que la mayoría de las secciones analizadas son biomédicas, con solo una de enfoque conductual y dos con un enfoque socioecológico. También se identificaron extractos que contienen más de un enfoque, además de un error conceptual relacionado con la caracterización de un hongo. Destacamos la importancia de ampliar los enfoques sobre la salud y las drogas en los libros didácticos sin limitarse a los efectos negativos y los procesos de enfermedad del cuerpo.Objetivamos analisar a forma como o tema drogas é abordado em livros didáticos de biologia. Esta pesquisa apresenta abordagem qualitativa e utiliza o referencial da análise de conteúdo. A partir da análise, percebemos que a maioria dos trechos analisados é de abordagem biomédica, com apenas um de abordagem comportamental e dois de abordagem socioecológica. Também foram identificados trechos que contêm mais de uma abordagem, além de um erro conceitual relacionado à caracterização de uma espécie de fungo. Destacamos a importância de uma ampliação de abordagens para os temas saúde e drogas nos livros didáticos não se restringindo aos efeitos negativos e aos processos de adoecimento do corpo

The social security contributions incidence on rural production and its controversial aspects

O presente estudo analisa diversas questões relativas às contribuições sociais previdenciárias incidentes sobre a produção rural. Inicialmente, investiga-se o status legal dos sujeitos passivos da contribuição social previdenciária, por meio da análise da redação originária conferida aos dispositivos legais pertinentes e suas subsequentes alterações, até a composição da legislação atualmente em vigor. Em seguida, são discutidas as questões constitucionais atuais da matéria pertinente, partindo-se do que já foi decidido pela Suprema Corte brasileira no julgamento do Recurso Extraordinário (RE) nº 718.874/RS, até as temáticas que serão decididas nos próximos anos e que se relacionam ao segurado especial pessoa física, à exigência controvertida da Contribuição para o Financiamento da Seguridade Social (Cofins) concomitantemente com a contribuição do Fundo de Assistência ao Trabalhador Rural (Funrural) em face das pessoas jurídicas e ao alcance da imunidade de receitas de exportação, especificamente no caso das exportações indiretas feitas por empresas comerciais exportadoras. Por fim, são examinados os temas julgados recentemente pelo Conselho Administrativo de Recursos Fiscais (Carf), que poderão ser submetidos em breve à apreciação do Poder Judiciário, bem como questão sobre a qual potencialmente advirá decisão do referido órgão paritário integrante do Ministério da Fazenda.This study examines issues regarding social security contribution on rural production. Initially, the social security contribution on rural production taxable person legal status is examined by analysing the original text of the applicable legal devices and its amendments through time. Subsequently, it addresses to the current constitutional issues concerning the matter; starting with the Brazilian Supreme Court decision provided in Extraordinary Appeal No. 718.874/RS, up to themes that will be decided in the coming years, regarding: The special insured person, the controversial tax requirement of legal persons that have the same constitutional foundation and the export revenue immunity in indirect operations carried out by export trading companies. Finally, it analyses correlated themes regarding recent cases decided by the Administrative Tax Appeals Board, which may be submitted soon to the Judiciary Branch, and a specific legal point that also may be submitted to the same administrative board linked to the Brazilian Ministry of Finance

POTENTIAL SELECTIVITY OF HERBICIDES IN PRE- AND POST-EMERGENT LINSEED (LINUM USITATISSIMUM L.)

A linhaça é uma oleaginosa amplamente utilizada na alimentação humana e animal, como cultura de cobertura em agroecossistemas e para produção de fibras. Para facilitar o manejo de plantas daninhas na cultura, este trabalho teve como objetivo avaliar potenciais herbicidas seletivos para o cultivo de linhaça aplicados em pré-plantio incorporado (PPI), pré-emergência (PRE), pós-emergência inicial (POS), pós-emergência tardia (POS tardio) uma vez que ainda não existem herbicidas registrados para uso em linhaça no Brasil. Portanto, quatro experimentos foram conduzidos em delineamento inteiramente casualizado com quatro repetições, e cinco (exp. 1), 21 (exp. 2), 26 (exp. 3) e quatro (exp. 4) tratamentos. Foram avaliadas a injúria na cultura e a matéria fresca e seca das plantas. O Experimento 4 foi conduzido até a produção de sementes, obtendo-se os dados de altura final, número de cápsulas e produtividade. Os resultados foram caracterizados pela baixa seletividade dos herbicidas durante a pré-emergência, incorporados ou não, e indicaram 11 herbicidas com potencial seletividade na pós-emergência, seja precoce ou tardia, os quais foram: bentazon, bentazon + imazamox, clethodim + fenoxaprop, clethodim, flumiclorac, fluazifop, flumioxazin, haloxyfop, nicosulfuron, tembotrione e tepraloxydim. A linhaça demonstrou ser suscetível ou com baixa tolerância a vários herbicidas.Linseed is an oilseed crop that is widely used in human and animal feed, as a cover crop in agroecosystems, and for fiber production. To facilitate the management of weeds in the crop, this study aimed to evaluate potential selective herbicides for linseed cultivation applied in pre-planting and incorporation (PPI), pre-emergence (PRE), and early (POST) and late (late POST) post-emergence stages, since there are presently no herbicides registered for use on linseed in Brazil. Therefore, four experiments were conducted in a completely randomized design with four replications, and five (exp. 1), 21 (exp. 2), 26 (exp. 3), and four (exp. 4) treatments. Crop injury and the fresh and dry matter of the plants were evaluated. Experiment 4 was conducted until seed production, and data on the final height, number of capsules, and yield were obtained. The results were characterized by the low selectivity of herbicides during pre-emergence, whether incorporated or not, and indicated 11 herbicides with potential selectivity in post-emergence, whether early or late, namely: bentazon, bentazon + imazamox, clethodim + fenoxaprop, clethodim, flumiclorac, fluazifop, flumioxazin, haloxyfop, nicosulfuron, tembotrione, and tepraloxydim. Linseed is demonstrated to be susceptible to or has low tolerance to various herbicides

Alternativas ao paraquat para o controle químico de azevém, aveia e buva

With the banning of paraquat, it is necessary to plan for the use of alternative herbicides in the desiccation of weeds. In this sense, herbicides such as glufosinate, saflufenacil, diquat, glyphosate, clethodim are highlighted in different mixtures. Glufosinate, especially in mixtures, is believed to be effective in controlling Lolium perenne ssp. multiflorum (Italian ryegrass), Avena fatua (wild oat) and/or Conyza sumatrensis (Sumatran fleabane). The aim was to evaluate the efficacy of glufosinate alone, or in mixtures, in the control of Italian ryegrass, wild oat and Sumatran fleabane, as an alternative to paraquat. The experiment was carried out in an experimental area located in the city of Cruz Alta, state of Rio Grande do Sul (RS), Brazil, in November 2020. A completely randomized design was used, with four replications. The treatments consisted of the application of glufosinate, saflufenacil, diquat, glyphosate and clethodim, alone or in combinations. The control of Italian ryegrass, wild oat and Sumatran fleabane was evaluated at 7, 14, and 28 days after application. Glufosinate at mixtures was effective in controlling weeds, being almost always superior to that observed for diquat alone or in mixtures. To achieve the same efficacy of the mixtures, the rate of glufosinate must be at least 700 g a.i. ha-1. The application of glufosinate (400 g a.i. ha-1) in mixtures with saflufenacil, glyphosate and clethodim was effective in controlling Italian ryegrass, wild oat and Sumatran fleabane. The alone application of glufosinate proved to be effective in controlling all weeds at the maximum applied dose (700 g a.i. ha-1). Glufosinate, alone or in mixtures, is thus characterized as an alternative to paraquat in the control of weeds.Com o banimento do paraquat, é necessário planejar o uso de herbicidas alternativos na dessecação de plantas daninhas. Neste sentido desatacam-se herbicidas como glufosinate, saflufenacil, diquat, glyphosate, clethodim, em diferentes associações. Acredita-se que o glufosinate, sobretudo em associações, seja eficaz no controle de Lolium perenne ssp. multiflorum (azevém), Avena fatua (aveia) e/ou Conyza sumatrensis (buva). Objetivou-se avaliar a eficácia de glufosinate isolado, ou em associações, no controle de azevém, aveia e buva, como alternativa ao paraquat. O experimento foi conduzido em área experimental  localizada no município de Cruz Alta, estado do Rio Grande do Sul (RS), Brasil, em novembro de 2020. Foi utilizado delineamento inteiramente casualizado, com quatro repetições. Os tratamentos foram compostos pela aplicação de glufosinate, saflufenacil, diquat, glyphosate e clethodim, isolados ou em associações. Foi avaliado o controle de azevém, aveia e buva, aos 7, 14 e 28 dias após aplicação. O glufosinate em associações foi eficaz no controle das plantas daninhas, sendo quase sempre superior ao observado para diquat isolado ou em misturas. Para se antingir a mesma eficácia das associações, a dose de glufosinate deve ser de no mínimo 700 g i.a. ha-1. A aplicação de glufosinate (400 g i.a. ha-1) em associações com saflufenacil, glyphosate e clethodim foi eficaz no controle de azevém, aveia e buva. A aplicação isolada de glufosinate se mostrou eficaz no controle de todas as plantas daninhas na dose máxima aplicada (700 g i.a. ha-1). O glufosinate, isolado ou em associações, caracteriza-se assim alternativa ao paraquat no controle de plantas daninhas

Soybean growth and production under straw of maize, Urochloa brizantha, Conyza spp. and Digitaria insularis

Weeds can cause serious damage during soybean development, due to allelopathy, competition for water, light and nutrients. It is necessary to investigate the influence of straw, of weeds Conyza spp. and Digitaria insularis, in soybean growth, production and composition and grains. If there is influence of allelopathic compounds at the crop. The aim of this study was to evaluate the influence of straw of maize and Urochloa brizantha (A.Rich.) R.D.Webster crops and Conyza spp., D. insularis, on growth, production and composition of grains produced by soybean. Treatments consisted of the control (absence of straw), maize straw, Urochloa brizantha straw, Conyza spp. straw (500, 1000, 1500 or 2000 kg ha-1) and D. insularis straw (500, 1000, 1500 or 2000 kg ha-1). The chlorophyll index, height of plants and insertion of the first pod, stem diameter at the collar and at 5 cm from the collar, root dry mass, number of pods and grains, weight of total grains, weight of 100 grains, protein and nitrogen (N), catalase and peroxidase contents in grains were evaluated. There was no difference between treatments for plant height, first pod height and chlorophyll index, as well as for total pods and 100 grain weight and protein content, N content and peroxidase and carboxylase enzymatic activity of the grains produced. For stem diameter, a higher value was found for the treatment with maize straw compared to the control (no straw). For dry root matter, treatments without straw and with Conyza spp. straw up to 1500 kg ha-1, differed from the treatment with maize straw. Even in some respects they provided beneficial effects compared to the absence of straw, which indicates the importance of crop residues. No allelopathic effects of weeds were observed on the growth and development of soybean. Conyza spp., D. insularis, maize or U. brizantha straws do not negatively affect soybean growth, production and grain composition

Crescimento inicial de mudas pré-brotadas de cana-de-açúcar em duas modalidades de aplicação de herbicidas

The specie Cyperus rotundus is among the weeds most difficult to control and can cause high losses in the sugarcane crop. The practices adopted in the culture guarantee the values of yield, among them, is the weed management. The objective of this work was to evaluate the initial growth of sugarcane pre-sprouted seedlings submitted to herbicide application before or after planting. Two experiments (pre and post-planting) were conducted in greenhouse, in a completely randomized design, with four replications. The treatments corresponded to the herbicides applied in three pre-planting doses: sulfentrazone (400, 800 and 1,600 g a.i. ha-1), diclosulam (96.6, 193.17 and 386.34 g a.i. ha-1), imazapic (66.5, 133 and 266 g a.i. ha-1) and imazapyr (250, 500 and 1,000 g e.a. ha-1) and post-planting: halosulfuron (56.25, 112.5 and 225 g a.i. ha-1), ethoxysulfuron (67.5, 135 and 270 g a.i. ha-1), 2,4-D (670, 1,340 and 2,680 g a.e. ha-1) and MSMA (987.5, 1,975 and 3,950 g a.i. ha-1). In addition to two controls without herbicide application. The crop injury, height, diameter, number of leaves, number of tillers, chlorophyll content, leaf area, dry mass of shoot and root were evaluated. Post-planting treatments were considered selective, since the crop injury were low, and the other parameters evaluated were not different from the control. For pre-planting applications, crop injury were observed up to 60 days after application (DAA) for sulfentrazone.A espécie Cyperus rotundus está entre as plantas daninhas mais difíceis de controlar, podendo causar elevados prejuízos na cultura da cana-de-açúcar. As práticas adotadas garantem os valores de produtividade, dentre elas, está o manejo de plantas daninhas. O objetivo deste trabalho foi avaliar o crescimento inicial de mudas pré-brotadas de cana-de-açúcar submetidas à aplicação de herbicidas em pré ou pós-plantio. Foram conduzidos dois experimentos (pré e pós-plantio) em casa-de-vegetação, em delineamento inteiramente casualizado, com quatro repetições. Os tratamentos correspondem aos herbicidas aplicados em três doses em pré-plantio: sulfentrazone (400, 800 e 1.600 g i.a. ha-1), diclosulam (96,6; 193,17 e 386,34 g i.a. ha-1), imazapic (66,5, 133 e 266 g i.a. ha-1) e imazapyr (250, 500 e 1.000 g e.a. ha-1) e pós-plantio: ethoxysulfuron (67,5, 135 e 270 g i.a. ha-1), halosulfuron (56,25, 112,5 e 225 g i.a. ha-1), 2,4-D (670, 1.340 e 2.680 g e.a. ha-1) e MSMA (987,5, 1975 e 3.950 g i.a. ha-1). Além de duas testemunhas sem aplicação de herbicidas. Foram avaliados os sintomas de injúrias, altura, diâmetro, número de folhas, número de perfilhos, teor de clorofila, área foliar, matéria seca da parte aérea e raiz. Os herbicidas em pós-plantio foram considerados seletivos, uma vez que os sintomas de injúrias foram baixos e os outros parâmetros avaliados não foram diferentes da testemunha. Para as aplicações em pré-plantio foram observados sintomas de injúrias até os 60 dias após a aplicação (DAA) para sulfentrazone

Eficiência e qualidade da aplicação de glyphosate + carfentrazone no controle de Commelina diffusa em função da ponta de pulverização e do adjuvante Triunfo FlexTM

The study aimed to evaluate the efficiency and the quality of technology application of the tank mixture of glyphosate + carfentrazone-ethyl in Commelina diffusa control. The experiment was conducted in plastic greenhouse and the experimental units were represented by vessels with four plants of C. diffusa. The experimental design was the entirely randomized, with nine treatments in a factorial scheme (4x2)+1, being four spray nozzles, (XR11002; DG11002; TT11002 and AI11002), two spray solutions of glyphosate + carfentrazone-ethy at 480 + 8 g ha-1 (with and without Triunfo FlexTM adjuvant at 0.05% v v-1) and a check without application. In the spray solution was added the FD&C-1 dye (1500 ppm), and applied over natural (15 replications of four leaves of C. diffusa) and artificial targets (4 replications of two plastic blades over the soil). The tracer quantification on the targets was realized by spectrophotometry, beyond evaluated the pH, static surface tension  and conductivity of the solutions and control of C. diffusa at 5, 10 and 15 days after application. The Triunfo FlexTM adjuvant reduced the surface tension and the pH of carfentrazone-ethyl + glyphosate mixture. There was significant interaction between nozzles and glyphosate + carfentrazone-ethyl solution with the adjuvant for the deposit on the leaves of C. diffusa. With the exception of TT11002 model, the other nozzles promoted significant increase of the deposition on C. diffusa when combined with the adjuvant. For solution deposition in plastic blades the best performances were characterized by DG11002 nozzle with and without adjuvant and AI11002 nozzle with adjuvant. The initial control of C. diffusa with glyphosate + carfentrazone-ethyl was improved when associated with the adjuvant, mainly for AI11002 and TT11002 nozzles.O trabalho teve como objetivo avaliar a eficiência e a qualidade da tecnologia de aplicação da mistura em tanque de glyphosate + carfentrazone-ethyl no controle de Commelina diffusa. O experimento foi conduzido em estufa plástica e as unidades experimentais representadas por vasos com quatro plantas de C. diffusa. O delineamento experimental foi o inteiramente casualizado, com nove tratamentos em fatorial (4x2)+1, sendo quatro pontas de pulverização (XR11002; DG11002; TT11002 e AI11002), duas caldas de pulverização de glyphosate + carfentrazone-ethyl a 480 + 8 g ha-1 (com e sem o adjuvante Triunfo FlexTM a 0,05% v v-1) e uma testemunha sem aplicação. Nas caldas de pulverização foi adicionado o corante FD&C-1 (1500 ppm), e aplicadas sobre alvos naturais (15 repetições de quatro folhas de C. diffusa) e artificiais (4 repetições de duas lâminas de plástico sobre o solo). A quantificação do traçante nos alvos foi realizada por espectrofotometria, além de avaliado o pH, tensão superficial estática e condutividade das soluções e o controle da C. diffusa aos 5, 10 e 15 dias após aplicação. O adjuvante Triunfo FlexTM reduziu a tensão superficial e o pH da mistura glyphosate + carfentrazone-ethyl. Houve interação significativa entre pontas e calda de glyphosate + carfentrazone-ethyl com o adjuvante para o depósito nas folhas de C. diffusa. Com exceção do modelo TT11002, as demais pontas promoveram incremento significativo da deposição sobre a C. diffusa quando associadas ao adjuvante. Para deposição das soluções nas lâminas de plástico caracterizou-se como as melhores performances a ponta DG11002 com e sem adjuvante, e AI11002 com adjuvante. O controle inicial de C. diffusa com glyphosate + carfentrazone-ethyl foi favorecido quando associado ao adjuvante, principalmente para as pontas AI11002 e TT11002

Weed management in pre-sprouted seedlings system of sugarcane

O uso de mudas pré-brotadas (MPB) de cana-de-açúcar é uma tecnologia que proporciona sanidade, vigor e uniformidade de plantio com foco na qualidade e produtividade, para a formação de viveiros e replantio de áreas comerciais, assim como em áreas de MEIOSI. Contudo, a presença de plantas daninhas pode afetar a produtividade por competir por água, luz, nutrientes e espaço com as mudas de cana-de-açúcar. A integração dos métodos cultural, mecânico e químico proporciona o controle das plantas daninhas, de modo que não afetem a produtividade e longevidade do canavial. O controle mecânico através da operação de quebra-lombo associado ao controle químico é uma das ferramentas utilizadas. Assim como o controle químico que através dos herbicidas residuais garantem controle das plantas daninhas durante o estabelecimento da cultura no campo. Contudo, as mudas de cana-de-açúcar possuem raízes que ficam em contato com o herbicida na camada de solo tratada, afetando a questão da seletividade. Dessa forma, o manejo de plantas daninhas no sistema de plantio com MPB proporciona um campo de novos estudos e discussões.The use of pre-sprouted seedlings (MPB) of sugarcane is a technology that provides sanity, vigor and uniformity of planting with a focus on quality and yield, for the formation of nurseries and replanting of commercial areas, as well as in areas of MEIOSI. However, the presence of weeds can affect the yield by competing for water, light, nutrients and space with sugarcane seedlings. The integration of the cultural, mechanical and chemical methods provides control of the weeds, so that they do not affect the yield and longevity of the sugarcane field. The mechanical control through the break-back operation associated with chemical control is one of the tools used. As well as the chemical control that through the residual herbicides guarantees a greater control of weeds during the establishment of the crop in the field. However, sugarcane seedlings have roots that are in contact with the herbicide in the treated soil layer, affecting the selectivity. Thus, weed management in the MPB planting system provides a field of new studies and discussions

Sequential application of herbicide options for controlling Conyza sumatrensis in soybean pre-sowing

The aim of this study was to evaluate the efficacy of sequentially applied herbicides to control Conyza sumatrensis, one of the most widely distributed weeds worldwide, in soybean pre-sowing burndown. The study was conducted under field conditions in the state of Paraná, Brazil, at 2018-2019 growing season. The experiment consisted of a randomized block design with four replicates, with 12 treatments consisting of different herbicide mixtures applied before sowing. Control of C. sumatrensis, injury to soybean plants, and variables related to agronomic performance were evaluated. The control levels were high for all treatments, except for the one that was free of saflufenacil in either of the two applications. These results highlight the importance of saflufenacil in the control of C. sumatrensis and show promise for the use of saflufenacil/imazethapyr when considering the system and other weeds. All studied treatments were selective to soybean, which showed higher injury values in the presence of diclosulam; however, this did not compromise the agronomic performance of soybean. Highlights • Application of systemic herbicides with sequential application of burndown herbicides, is essential for the control of Conyza sumatrensis (>15 cm height).• Saflufenacil, flumioxazin, and imazethapyr stand out in the control of Conyza sumatrensis.• Protox and ALS inhibitors can replace paraquat in sequential application with equal efficacy in the control of Conyza sumatrensis.The aim of this study was to evaluate the efficacy of sequentially applied herbicides to control Conyza sumatrensis, one of the most widely distributed weeds worldwide, in soybean pre-sowing burndown. The study was conducted under field conditions in the state of Paraná, Brazil, at 2018-2019 growing season. The experiment consisted of a randomized block design with four replicates, with 12 treatments consisting of different herbicide mixtures applied before sowing. Control of C. sumatrensis, injury to soybean plants, and variables related to agronomic performance were evaluated. The control levels were high for all treatments, except for the one that was free of saflufenacil in either of the two applications. These results highlight the importance of saflufenacil in the control of C. sumatrensis and show promise for the use of saflufenacil/imazethapyr when considering the system and other weeds. All studied treatments were selective to soybean, which showed higher injury values in the presence of diclosulam; however, this did not compromise the agronomic performance of soybean. Highlights • Application of systemic herbicides with sequential application of burndown herbicides, is essential for the control of Conyza sumatrensis (>15 cm height).• Saflufenacil, flumioxazin, and imazethapyr stand out in the control of Conyza sumatrensis.• Protox and ALS inhibitors can replace paraquat in sequential application with equal efficacy in the control of Conyza sumatrensis

FORMULAÇÕES DE GLUFOSINATE NA DESSECAÇÃO PRÉ-COLHEITA DA SOJA

Considering the effectiveness of glufosinate in the pre-harvest desiccation of soybeans, but with little comparative information between the formulations of this herbicide, the objective of this study was to evaluate commercial products based on glufosinate in the pre-harvest desiccation of soybeans. The experiment was carried out in Palotina, Paraná state (PR), Brazil, 2020-2021 crop season. A randomized block design with four replications was used. The treatments were composed by the application, in the pre-harvest soybean desiccation, of the glufosinate formulations (400 g ai ha-1): Finale®, Gamonium®, Off Road®, Patrol® SL, Fascinate® BR, Trunfo®, in addition to of the control without application. The percentage of defoliation and maturation (focused on the evaluation of pods), grain moisture and yield were evaluated. No differences were observed between the glufosinate formulations in the defoliation and maturation of the pods of soybean plants, in the application in pre-harvest desiccation. However, further studies are needed so that any differences in performance between glufosinate formulations can be better characterized. None of the glufosinate formulations differed from the control without application in yield, and all reduced grain moisture without differences between them. This indicates the feasibility of applying glufosinate in R7.2, as a pre-harvest desiccation management of soybeans.Haja vista a eficácia do glufosinate na dessecação pré-colheita da soja, mas com poucas informações comparativas entre as formulações deste herbicida, objetivou-se com este estudo avaliar produtos comerciais à base de glufosinate na dessecação pré-colheita da soja. O experimento foi conduzido no campo em Palotina, estado do Paraná (PR), Brasil, safra 2020-2021. Foi utilizado delineamento em blocos casualizados, com quatro repetições. Os tratamentos foram compostos pela aplicação, na dessecação pré-colheita da soja, das formulações de glufosinate (400 g i.a. ha-1): Finale®, Gamonium®, Off Road®, Patrol® SL, Fascinate® BR, Trunfo®, além da testemunha sem aplicação. Foi avaliado o percentual de desfolha e maturação (focada na avaliação das vagens) da soja aos 3, 5 e 7 dias após a aplicação, umidade de grãos e produtividade. Não foram observadas diferenças entre as formulações de glufosinate na desfolha e maturação das vagens das plantas de soja, na aplicação em dessecação pré-colheita. Além disso, nenhuma das formulações de glufosinate diferiu da testemunha sem aplicação em produtividade, e todas reduziram a umidade dos grãos sem diferenças entre elas. Isso, indica a viabilidade da aplicação de glufosinate em R7.2, como manejo em dessecação pré-colheita da soja. Palavras-chave: desfolha; maturação; produtividade; herbicida; dessecante.   Glufosinate formulations in soybean pre-harvest desiccation   ABSTRACT: Considering the effectiveness of glufosinate in the pre-harvest desiccation of soybeans, but with little comparative information between the formulations of this herbicide, the objective of this study was to evaluate commercial products based on glufosinate in the pre-harvest desiccation of soybeans. The experiment was carried out at field in Palotina, Paraná state (PR), Brazil, 2020-2021 crop season. A randomized block design with four replications was used. The treatments were composed by the application, in the pre-harvest soybean desiccation, of the glufosinate formulations (400 g ai ha-1): Finale®, Gamonium®, Off Road®, Patrol® SL, Fascinate® BR, Trunfo®, in addition to of the control without application. The percentage of defoliation and maturation (focused on the evaluation of pods) of soybean at 3, 5 and 7 days after application, grain moisture and yield were evaluated. No differences were observed between the glufosinate formulations in the defoliation and maturation of the pods of soybean plants, in the application in pre-harvest desiccation. Furthermore, none of the glufosinate formulations differed from the control without application in yield, and all reduced grain moisture without differences between them. This indicates the feasibility of applying glufosinate in R7.2, as a pre-harvest desiccation management of soybeans. Keywords: defoliation; maturation; yield; herbicide; desiccant