Abstract The critical importance of wetland ecosystems is highlighted, as they provide essential services such as regulating the hydrological cycle, flood control, and filtering pollutants. Globally, 64 % of wetlands have been lost since 1970, with Asia being the most affected region. Agricultural expansion, urban development, and aquaculture are some of the main drivers of the degradation of these ecosystems, particularly mangroves, which play a key role in climate change mitigation. In Costa Rica, wetlands under inventory represent 6.01 % of the national territory, and although the country has made progress in their protection, with 49 % of wetlands falling under some category of protected wild area, challenges remain, such as agricultural expansion, livestock farming, and sedimentation. At the international level, the Ramsar Convention has been key to wetland conservation efforts, with over 2.57 million km2 protected. However, additional efforts are needed to mitigate the threats to these ecosystems, especially in the context of climate change.

Resumen Se resalta la importancia crítica de los ecosistemas de humedales, que proporcionan servicios esenciales, como la regulación del ciclo hidrológico, el control de inundaciones y la filtración de contaminantes. En el nivel global, se ha perdido un 64 % de los humedales desde 1970, con Asia siendo la región más afectada. La expansión agrícola, el desarrollo urbano y la acuicultura son algunas de las principales causas de la degradación de estos ecosistemas, especialmente de los manglares, que cumplen una función clave en la mitigación del cambio climático. En Costa Rica, los humedales bajo inventario representan el 6.01 % del territorio nacional, y aunque el país ha avanzado en su protección, con el 49 % de los humedales bajo alguna categoría de área silvestre protegida, persisten desafíos, como la expansión agrícola, la ganadería y la sedimentación. En el plano mundial, la Convención Ramsar ha sido clave en los esfuerzos de conservación de humedales, con más de 2.57 millones km2 protegidos. Sin embargo, se necesitan esfuerzos adicionales para mitigar las amenazas a estos ecosistemas, especialmente en el contexto del cambio climático.

ABSTRACT A bibliometric study was undertaken to analyze the spatiotemporal distribution of works related to managing boron (B) in Eucalyptus spp. from 1970 to 2022. This analysis was based on the Web of Science and Scopus databases, and 121 documents were retrieved. The eight main aspects analyzed were (1) annual scientific production, (2) most relevant research sources, (3) world scientific production, (4) association between countries, (5) most relevant affiliations, (6) indexed terms, (7) most relevant authors, and (8) most cited documents. The results indicated that publications of studies about B in eucalyptus have increased significantly over the last decade (2010-2020). Brazil has produced the most studies relating to the nutritional management of B in eucalyptus, as is mainly reflected in the numbers of researchers, research institutions, and journals that have published on the subject. Our study found that most works have been developed regionally, with little international collaboration between countries although researchers from the United States are the most frequent partners in international collaborations. The majority of the articles analyzed focused on studying the influence of B doses on the growth and rooting of eucalyptus seedlings. Finally, one significant gap in the literature is the need for studies on sources of B via soil and leaves, and new studies on this subject should be commissioned. Thus, the bibliometric review was an efficient approach for observing the main advances in managing B in eucalyptus in recent decades and identifying the leading research groups and future opportunities for scientific advances in this area. (B spp 197 2022 databases 12 retrieved 1 (1 production 2 (2 3 (3 4 (4 5 (5 affiliations 6 (6 terms 7 (7 authors 8 (8 20102020. 20102020 2010 2020 . (2010-2020) institutions regionally collaborations seedlings Finally leaves commissioned Thus area 19 202 ( 2010202 201 (2010-2020 20 201020 (2010-202 20102 (2010-20 (2010-2 (2010- (2010 (201 (20

RESUMO O corte mecanizado da cana-de-açúcar necessita de aprimoramentos, visto que as ferramentas de corte podem afetar a longevidade dos canaviais e aumentar os custos de produção. Além disso, essas ferramentas podem aumentar a demanda energética das máquinas no campo. Este estudo avaliou o desempenho de colhedoras de cana-de-açúcar equipadas com distintos mecanismos de corte basal: corte por impacto (lâminas) e corte contínuo (serras) em três áreas comerciais de produção de cana-de-açúcar. O consumo efetivo de combustível e a capacidade efetiva de colheita das máquinas foram avaliados em cada tratamento. O delineamento experimental adotado foi inteiramente casualizado em esquema fatorial 3 × 2 com seis repetições. As serras aumentaram o consumo de combustível por área em 3,9 e 8,9% por Mg colhido. As características produtivas da cultura determinam a demanda energética dos sistemas de colheita. Para produtividades acima de 90 Mg ha-1, a demanda energética estabilizou-se até 120 Mg ha-1. A demanda de combustível para a colheita variou entre 1,0 e 1,2 L Mg-1 de material colhido. Os resultados mostram que independente do sistema de corte, cada Mg de cana colhida necessita em média de 37,3 kJ de energia para ser retirado do campo. canadeaçúcar açúcar aprimoramentos disso campo basal lâminas (lâminas (serras canadeaçúcar. açúcar. tratamento repetições 39 9 3, 89 8 8,9 colhido ha1, ha1 ha 1, 1 ha-1 estabilizouse estabilizou se 12 ha1. 1. 10 0 Mg1 Mg- 373 37 37, 8, ha-

ABSTRACT The mechanized cutting of sugarcane requires improvements, as cutting tools can affect the longevity of sugarcane fields and increase production costs. Furthermore, these tools can increase the energy demand of machines in the field. This study evaluated the sugarcane harvester performance equipped with different basal cutting devices: impact cutting (blades) and continuous cutting (saws) in three commercial sugarcane production areas. The experimental design was completely randomized in a 3 × 2 factorial scheme with six repetitions. Effective fuel consumption and harvesting capacity were evaluated. The saws increased fuel consumption per area by 3.9 and 8.9% per Mg harvested. The crop’s yield characteristics determine harvesting systems’ energy demand. For yields above 90 Mg ha-1, energy demand has stabilized up to 120 Mg ha-1. The fuel demand for harvesting ranged between 1.0 and 1.2 L Mg-1 of harvested material. Regardless of the cutting system, each Mg requires 37.3 kJ of energy to be removed from the field. improvements costs Furthermore field devices blades (blades (saws areas repetitions 39 9 3. 89 8 8.9 crops crop s systems ha1, ha1 ha 1, 1 ha-1 12 ha1. 1. 10 0 Mg1 Mg- material system 373 37 37. 8. ha-

Protium ovatum Eng. Burseraceae is an endemic species in Brazil used in traditional medicine. This study investigated the chemical variation and the in vitro antioxidant and antimicrobial properties of dichloromethane soluble fraction of hydrolate (DSFH) from leaves of P. ovatum collected from five different vegetation physiognomies within the Cerrado Goiano. The region was characterized based on the DSFH chemical composition by gas chromatography coupled to mass spectrometry (GC-MS) analysis. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were performed to compare the different DSFHs from five Savannah regions in Brazil. The DSFHs from the Cerrado stricto sensu (CSS), Mata de Galeria (MG) and Cerradão (C) regions were grouped in the negative part of PC1, showing high similarity. Samples from the C and MG regions showed antioxidant activity of IC50 = 0.98 and 0.78 mg mL-1, respectively, and 0.250 mg mL-1 of butylated hydroxytoluene (positive control). DSFH from different regions exhibited antifungal activity against Candida albicans. The results show that the chemical composition and the biological activity of DSFHs can be affected according to the area of collection. Eng medicine (DSFH P Goiano GCMS GC MS (GC-MS PCA (PCA HCA (HCA CSS, CSS , (CSS) (MG (C PC1 PC similarity IC IC5 098 0 98 0.9 078 78 0.7 mL1, mL1 mL 1, 1 respectively 0250 250 0.25 mL- positive control. control . control) albicans collection (CSS 09 9 0. 07 7 025 25 0.2 02 2

In the Amazon, Euterpe oleracea Mart. (açaí), is part of the identity of traditional communities, and the fruit is integrated into their everyday sociocultural dynamics. Hydrolysis and pyrolysis of residual biomass can be alternatives to yield sugars, ethanol, biochar and bio-oil. The açaí seeds subjected to oxidative pretreatment followed by acid hydrolysis increased cellulose to fermentable sugars (reaching 23.5%) and second-generation ethanol production (17.441 L t−1). Açaí oil (ca. 30%) was extracted using a Soxhlet apparatus (using hexane as solvent) and detected through gas chromatography coupled to mass spectrometry (GC-MS), where acids accounted for 82.43% of the total composition, while alcohols comprised only 13.15%. For pyrolysis, temperatures (500 and 550 °C), time (20 and 30 min), and activation temperature (750 and 800 °C) were evaluated, resulting in yields of ca. 22% for biochar and 30% for bio-oil. For the bio-oil, the main compounds detected by GC-MS were acids (16.3%), aldehydes (13.08%), amides (12.19%), alcohols (6.72%), and phenols (4.64%). The obtained biochar displayed surface area values of 553.7 m2 g−1 and 10% crystallinity, indicating its more amorphous nature. Amazon Mart açaí, , (açaí) communities dynamics biooil. biooil bio oil. bio-oil reaching 23.5% 235 23 5 secondgeneration second generation 17.441 17441 17 441 (17.44 t−1. t1 t t−1 . 1 t−1) ca (ca solvent GCMS, GCMS GC MS (GC-MS) 8243 82 43 82.43 composition 1315 13 15 13.15% 500 (50 55 °C, C °C 20 (2 3 min, min min) 750 (75 80 evaluated 22 biooil, oil, 16.3%, 163 16.3% 16 (16.3%) 13.08%, 1308 13.08% 08 (13.08%) 12.19%, 1219 12.19% 12 19 (12.19%) 6.72%, 672 6.72% 6 72 (6.72%) 4.64%. 464 4.64% 4 64 (4.64%) 5537 553 7 553. m g1 g g− 10 crystallinity nature (açaí 23.5 2 17.44 1744 44 (17.4 t− (GC-MS 824 8 82.4 131 13.15 50 (5 ( 75 (7 16.3 (16.3% 130 13.08 0 (13.08% 121 12.19 (12.19% 67 6.72 (6.72% 46 4.64 (4.64% 23. 17.4 174 (17. 82. 13.1 16. (16.3 13.0 (13.08 12.1 (12.19 6.7 (6.72 4.6 (4.64 17. (17 13. (16. (13.0 12. (12.1 6. (6.7 4. (4.6 (1 (16 (13. (12. (6. (4. (13 (12 (6 (4

We report a facile hydrothermal method for the synthesis of niobium pentoxide (Nb2O5) under two different temperatures, 120 °C (Nb2O5-120) and 150 °C (Nb2O5-150). The obtained materials were characterized by structural, optical and morphological techniques. Also, the photocatalytic properties of the Nb2O5 samples were evaluated in two reactions under ultraviolet (UVC) irradiation: degradation of methylene blue (MB) and indigo carmine (IC) dyes; and esterification of free fatty acids (FFA) present in waste cooking oil (WCO). The Nb2O5 was formed at different temperatures of synthesis, and the increase in temperature did not cause significant changes in the structural and optical characteristics, but resulted in an increased surface area of the synthesized materials. Both synthesized materials showed excellent efficiency for dye photodegradation. The sample Nb2O5-150 presented the best performance for the MB photodegradation, with almost 85% of the removal efficiency. In this case, the adsorption of MB molecules on the surface of the material was high due to the favorable electrostatic interaction and also because of its high surface area. For the IC photodegradation, the adsorption was insignificant, and both samples presented approximately 100% of the removal efficiency. These materials were also promising for the reduction of free fat acids in waste oil by photoesterification. NbO Nb O (Nb2O5 12 C Nb2O5120 (Nb2O5-120 15 Nb2O5150. Nb2O5150 . (Nb2O5-150) techniques Also Nb2O UVC (UVC irradiation (MB (IC dyes FFA (FFA WCO. WCO (WCO) characteristics photodegradation Nb2O5-15 85 case insignificant 100 photoesterification (Nb2O 1 Nb2O512 (Nb2O5-12 Nb2O515 (Nb2O5-150 (WCO Nb2O5-1 8 10 Nb2O51 (Nb2O5-1 (Nb2O5-15 Nb2O5- (Nb2O5-

In this work, using the PM3 semi-empirical method, the oxidation of the single-walled carbon nanotube (SWCNT) was studied by sulfuric and nitric acid for the incorporation of carbonyl (C=O), phenol (OH) and carboxylic (COOH) groups in the C=C bonds present on the surface of the nanotube. Subsequently, the crosslinking of the oxidized SWCNT (SWCNTox) and chitosan (Q) was observed through hydrogen bonds of the C=O and OH bonds with 2.34 Å, the process was endothermic and soluble in polar solvents due to the presence of OH and NH groups in the structure of SWCNTox/Q. The Monte Carlo modeling allowed to study the adsorption of pesticides in the SWCNTox/Q at different temperatures, where the QSAR (quantitative structure activity relationship) properties allowed predicting the behavior of the pesticides, that is, the degree of hydrophobicity (log P) and accessible surface area (ASA) were important parameters in the evaluation of SWCNTox/Q as an adsorbent and surface interacting with pesticides respectively. Finally, the adsorption was a physisorption process due to the electronegativity of the CO, OH, NH2, NH and C=O bonds. work PM semiempirical semi empirical method singlewalled single walled (SWCNT C=O, CO , C O (C=O) (OH COOH (COOH CC Subsequently SWCNTox (SWCNTox Q (Q 234 2 34 2.3 Å SWCNToxQ temperatures quantitative relationship is log P ASA (ASA respectively Finally NH2 (C=O 23 3 2.

ABSTRACT: Using non-destructive and low-cost methods to determine leaf area has gained important applications. The research objectives were (i) to propose a non-destructive method to estimate the leaf area of castor bean crops and (ii) to build equations that accurately and quickly estimate the leaf area of specie. One thousand healthy and expanded leaves of five castor bean cultivars (New Zealand Purple, Sipeal, Carmencita, Amarelo de Irecê, and IAC-80) were collected, and 200 leaves were collected from each. The maximum length, maximum width, and leaf area were calculated for each leaf. The product between length and width (LW) were calculated. We performed tests with different linear and non-linear regression models between leaf area and linear leaf dimensions of each cultivar. The models used were linear, linear without intercept, and power. The criteria for choosing the best models to estimate the leaf area of castor beans were a higher coefficient of determination, more elevated Pearson’s linear correlation coefficient, lower Akaike information criterion, higher Willmott agreement index, and smallest root mean square error. The equations that presented the best criteria for estimating the leaf area of castor bean cultivars were those that used the product between length and width, compared to equations that used only one leaf dimension. The model ŷ = 0.439 × LW can be used to accurately and quickly estimate the castor bean leaf area through linear measurements of the leaves, using the product between length and width (LW), regardless of the cultivar chosen. ABSTRACT nondestructive non destructive lowcost low cost applications i (i ii (ii specie New Purple Sipeal Carmencita Irecê IAC80 IAC 80 IAC-80 20 (LW nonlinear intercept power determination Pearsons Pearson s criterion index error dimension 0439 0 439 0.43 LW, , chosen IAC8 8 IAC-8 2 043 43 0.4 IAC- 04 4 0.

RESUMO: O uso de métodos não destrutivos e de baixo custo para determinação de área foliar tem ganhado importantes aplicações. Os objetivos da pesquisa foram (i) propor um método não destrutivo para estimar a área foliar da cultura da mamona e (ii) construir equações que estimem com precisão e rapidez a área foliar da espécie. Foram coletadas mil folhas sadias e expandidas de cinco cultivares de mamona (New Zealand Purple, Sipeal, Carmencita, Amarelo de Irecê e IAC-80), sendo coletadas 200 folhas de cada uma. O comprimento máximo, largura máxima e área foliar foram calculados para cada folha. Foi calculado o produto entre comprimento e largura (LW). Foram realizados testes com diferentes modelos de regressão linear e não linear entre área foliar e dimensões lineares das folhas de cada cultivar. Os modelos utilizados foram linear, linear sem intercepto e potência. Os critérios para escolha dos melhores modelos para estimar a área foliar da mamona foram maior coeficiente de determinação, maior coeficiente de correlação linear de Pearson, menor critério de informação de Akaike, maior índice de concordância de Willmott e menor raiz do erro quadrático médio. As equações que apresentaram melhores critérios para estimativa da área foliar das cultivares de mamona foram aquelas que utilizaram o produto entre comprimento e largura, em comparação às equações que utilizaram apenas uma dimensão foliar. O modelo ŷ = 0,439 × LW pode ser utilizado para estimar com precisão e rapidez a área foliar da mamona por meio de medidas lineares das folhas, utilizando o produto entre comprimento e largura (LW), independente da cultivar escolhida. RESUMO aplicações i (i ii (ii espécie New Purple Sipeal Carmencita IAC80, IAC80 IAC 80 , IAC-80) 20 máximo folha LW. . (LW) potência Pearson Akaike médio 0439 0 439 0,43 LW, escolhida IAC8 8 IAC-80 2 (LW 043 43 0,4 IAC-8 04 4 0, IAC-

ABSTRACT: Anatomy teaching has been changing over the years, introducing technological methods especially after the pandemic period. An ongoing debate revolves around whether exclusive reliance on technology for anatomy classes, as opposed to traditional methods and face-to-face instruction, enhances knowledge acquisition. This study analyzed the knowledge perception of students from various semesters throughout the Veterinary Medicine course, comparing students who only had online classes with those who had face-to-face classes in Gross Anatomy of Domestic Animals. For this purpose, a questionnaire was distributed for voluntary and anonymous completion, and the responses were subsequently analyzed statistically. The results indicated that 11.5% of the students who took Anatomy remotely failed to apply the knowledge in other subjects, while no face-to-face learning student reported the same. Most students, both remote and face-to-face groups, remember the subject but review the content frequently. Regarding theoretical knowledge, the online group (80.8%) understood better as the course progressed, compared to 59.6% of the face-to-face group. The connection between Anatomy and other subjects was more highlighted by the face-to-face group (30.8%) compared to the online group (15.4%). Both groups agree that physical contact with anatomical specimens is essential; however, some believe that initial exposure through 3D images or photographs is feasible. We concluded based on this preliminary study that the initial interactions with the Anatomy field should include diversified pedagogical techniques with empathetic communication. The use of modern technological resources are allies in the teaching-learning process. Furthermore, after abstracting the contents, technology alone can effectively maintain and update anatomical knowledge. ABSTRACT years period facetoface face instruction acquisition Animals purpose completion statistically 115 11 5 11.5 same frequently 80.8% 808 80 8 (80.8% progressed 596 59 6 59.6 30.8% 308 30 (30.8% 15.4%. 154 15.4% . 15 4 (15.4%) essential however D feasible communication teachinglearning process Furthermore contents 1 11. 80.8 (80.8 59. 30.8 3 (30.8 15.4 (15.4% 80. (80. 30. (30. 15. (15.4 (80 (30 (15. (8 (3 (15 ( (1

RESUMO: O ensino de anatomia vem se modificando ao longo dos anos, introduzindo métodos tecnológicos, principalmente após o período pandêmico. Questiona-se o uso exclusivo da tecnologia em comparação aos métodos tradicionais de dissecação e aulas teóricas presenciais no que diz respeito à aquisição de conhecimento. Este artigo analisou a percepção de conhecimento de alunos de diversos semestres do curso de Medicina Veterinária, comparando alunos que tiveram aulas apenas online com aqueles que tiveram aulas presenciais de Anatomia Descritiva dos Animais Domésticos. Para tanto, questões foram enviadas por meio de formulário, com preenchimento voluntário e anônimo, e posteriormente analisadas estatisticamente. Os resultados indicam que 11,5% dos alunos que cursaram a disciplina remotamente falharam na aplicação dos conhecimentos em outras disciplinas, enquanto nenhum aluno do ensino presencial relatou o mesmo. A maioria dos alunos, tanto dos grupos remotos quanto dos presenciais, lembram-se do assunto, mas revisam o conteúdo com frequência. Em relação ao conhecimento teórico, o grupo online (80,8%) compreendeu melhor à medida que o curso avançava, comparado a 59,6% do grupo presencial. A ligação entre Anatomia e outras disciplinas foi mais destacada pelo grupo presencial (30,8%) em comparação ao online (15,4%). Ambos os grupos concordam que o contacto físico com peças anatômicas é essencial, mas alguns consideram possível ter um primeiro contacto com imagens ou fotografias 3D. Baseado nesse estudo preliminar, conclui-se que as interações iniciais com a área de Anatomia devem incluir técnicas pedagógicas diversificadas com comunicação empática. A utilização de recursos tecnológicos modernos é um aliado do processo de ensino-aprendizagem, e após a abstração dos conteúdos é possível o uso singular da tecnologia na manutenção e atualização do conhecimento anatômico. RESUMO anos pandêmico Questionase Questiona Veterinária Domésticos formulário anônimo estatisticamente 115 11 5 11,5 mesmo lembramse lembram assunto frequência teórico 80,8% 808 80 8 (80,8% avançava 596 59 6 59,6 30,8% 308 30 (30,8% 15,4%. 154 15,4% . 15 4 (15,4%) essencial 3D D preliminar concluise conclui empática ensinoaprendizagem, ensinoaprendizagem aprendizagem, aprendizagem ensino-aprendizagem anatômico 1 11, 80,8 (80,8 59, 30,8 3 (30,8 15,4 (15,4% 80, (80, 30, (30, 15, (15,4 (80 (30 (15, (8 (3 (15 ( (1

ABSTRACT The cowpea is a legume that is widely grown in the north-east of Brazil, and which has been gaining ground in other regions of the country. The main producer is the state of Ceará, with a large planted-area, albeit low productivity due to a lack of producer technology and adapted cultivars. The aim of this study was to identify and recommend superior genotypes in terms of adaptability and stability under rainfed and irrigated conditions, in addition to genotypes with reduced grain darkening. To this end, six experiments were conducted in different districts of Ceará (Crato, Pentecoste, Crateús, Madalena, Bela Cruz and Limoeiro do Norte) and one laboratory experiment, to evaluate grain darkening. The experimental design of the field trials was of randomised blocks, with 14 genotypes and 4 replications. The analysis of variance showed a significant effect from the genotypes and environments and their interaction, so GGE Biplot analysis was carried out to evaluate adaptability and stability. To evaluate grain darkening, a completely randomised design was used in a simple factorial scheme with six previously selected genotypes and five different storage times (0, 2, 4, 6 and 8 months). There was a significant effect from the genotypes and storage time. Genotype 1 showed the least darkening, and can be recommended for environments to which it is best adapted (Crato and Crateús). Genotype 9 was considered the most stable for grain yield, and can be more broadly recommended for the semi-arid region of the state of Ceará. northeast north east Brazil country plantedarea, plantedarea planted area, area planted-area cultivars conditions darkening end Crato, Crato Pentecoste Crateús Madalena Norte experiment blocks replications interaction 0, 0 (0 2 months. months . months) time Crateús. Crateús) yield semiarid semi arid (

ABSTRACT Regions with semi-arid climates have environmental conditions that result in abiotic stress to plants. The largest melon (Cucumis melo L.) production area in Brazil, the state of Rio Grande do Norte, has these climatic characteristics. Use of biostimulants in these production systems can mitigate effects of abiotic stress and increase yield and fruit quality. The objective in this study was to evaluate the physiological and production characteristics of melon, under the application of biostimulants. The biostimulants Acadian®, Folicist® and Nov@® were applied and compared to the control treatment (no biostimulants), in ‘Goldex’ and ‘McLaren’ melons. Nov@® led to higher CO2 assimilation, transpiration and stomatal conductance, as well as ascorbate peroxidase, in ‘Goldex’ and ‘McLaren’. Greater catalase was obtained with the application of Nov@®, while the use of Folicist® resulted in higher malondialdehyde content. The cultivar ‘McLaren’ exhibited the best physiological and biochemical performance, and ‘Goldex’ the best yield. Folicist® promotes physiological adaptations to stress without impairing photosynthetic activity. The biostimulants increased yield and number of fruits per plant and promoted physiological adaptations to semi-arid conditions. semiarid semi arid plants Cucumis L. L Brazil Norte quality Acadian Acadian® Folicist Nov Nov@ no biostimulants, , biostimulants) ‘Goldex Goldex ‘McLaren McLaren melons CO assimilation conductance peroxidase ‘McLaren. . content performance activity

RESUMO Regiões com climas semiáridos apresentam condições ambientais que resultam em estresses abióticos às plantas. A maior área de produção de melão (Cucumis melo L.) do Brasil, o Estado do Rio Grande do Norte, possui essas características climáticas. O uso de bioestimulantes nesses sistemas de produção pode mitigar os efeitos dos estresses abióticos e aumentar a produtividade e a qualidade dos frutos. O objetivo neste estudo foi avaliar as características fisiológicas e de produção do meloeiro, sob aplicação de bioestimulantes. Os bioestimulantes Acadian®, Folicist® e Nov@® foram aplicados e comparados ao tratamento controle (sem bioestimulantes), em melões ‘Goldex’ e ‘McLaren’. Nov@® proporcionou maior assimilação de CO2, transpiração e condutância estomática, assim como ascorbato peroxidase em ‘Goldex’ e ‘McLaren’. Maior catalase foi obtida pela aplicação de Nov@®, enquanto que o uso de Folicist® resultou em maior teor de malondialdeído. A cultivar McLaren apresentou o melhor desempenho fisiológico e bioquímico e a ‘Goldex’ o melhor rendimento. Folicist® promove adaptações fisiológicas aos estresses sem prejudicar a atividade fotossintética. Os bioestimulantes aumentaram a produtividade e o número de frutos por planta e promoveram adaptações fisiológicas às condições semiáridas. plantas Cucumis L. L Brasil Norte climáticas meloeiro Acadian Acadian® Folicist Nov Nov@ bioestimulantes, , bioestimulantes) ‘Goldex Goldex ‘McLaren. ‘McLaren . ‘McLaren’ CO2 CO estomática malondialdeído rendimento fotossintética semiáridas

The Legal Amazon Region has numerous lignocellulosic biomasses with unknown technological properties, contrasting with an urgent demand for energy transition towards a more sustainable economy. This study analyzed the biomasses of baru husk (BH), cupuaçu husk (CH), and pequi seed (PS) through slow pyrolysis at 650 °C to assess the suitability of the bio-oils and biochars as potential biorefinery bioproducts. The physicochemical characterizations showed that all residues are potential candidates for bioproduct production, with CH biomass obtaining the best results for biochar production due to its high carbon content (80.65%) and surface area of 298.0491 m2 g-1, while BH and PS are more suitable for bio-oil production due to their high volatile matter content (> 84%). The main compounds in the bio-oil identified by gas chromatography-mass spectrometry (GC-MS) were phenolic (48.5, 56.7, and 60.36% for BH, CH, and PS, respectively) and furanic (22, 12.17, and 10.28% for BH, CH, and PS, respectively). Finally, it is concluded that based on the physicochemical and morphological characteristics obtained in this study, the pyrolysis products have potential for future investigation in various processes such as adsorption, carbon sequestration, and obtaining valuable chemical compounds, contributing to the promotion of the bioeconomy through sustainable waste management. properties economy , (BH) (CH) (PS 65 C biooils bio oils bioproducts 80.65% 8065 80 (80.65% 2980491 298 0491 298.049 m g1, g1 g 1, 1 g-1 biooil oil > ( 84%. 84 84% . 84%) chromatographymass chromatography mass GCMS GC MS (GC-MS 48.5, 485 48 5 (48.5 567 56 7 56.7 6036 60 36 60.36 respectively 22, 22 (22 1217 12 17 12.17 1028 10 28 10.28 respectively. Finally adsorption sequestration management (BH (CH 6 80.65 806 8 (80.65 298049 29 049 298.04 g- 48.5 4 (48. 56. 603 3 60.3 2 (2 121 12.1 102 10.2 80.6 (80.6 29804 04 298.0 48. (48 60. 12. 10. 80. (80. 2980 0 298. (4 (80 (8

Abstract In Brazil, soybeans account for 29.4% of the gross value of agricultural production. However, this crop faces various climate-related challenges. Agricultural insurance has been introduced to address these challenges, but its growth is hindered by adverse selection and systemic risks affecting insurers' financial results. This study aims to analyze the factors that influence the profitability of agricultural insurers in the state of Paraná, Brazil, from 2007 to 2021 using panel data regression, which allows for the analysis of data from various units such as municipalities and companies over time. The study findings indicate that the primary determinants of insurers' profitability, in terms of costs and productivity, were the insured area, effective productivity, and the variable for indemnity. Only Brasilseg and Mapfre showed negative results among the companies analyzed, while the new entrant, Newe, had positive results. The findings provide a detailed understanding of the factors that impact the profitability of agricultural insurers and offer valuable information for improving risk management and formulating policies, thereby contributing to the sustainability and competitiveness of the sector. Brazil 294 29 4 29.4 production However climaterelated climate related challenges Paraná 200 202 regression time productivity area indemnity analyzed entrant Newe policies sector 2 29. 20

Resumo No Brasil, a soja representa 29,4% do valor bruto da produção agropecuária. Todavia, essa cultura enfrenta diversas intempéries climáticas. Nesse sentido, o seguro agrícola emerge com o propósito de mitigar esses desafios, porém sua expansão é dificultada por problemas como a seleção adversa e os riscos sistêmicos que afetam os resultados das seguradoras. Nesse sentido, o objetivo deste artigo é analisar os fatores que afetam a lucratividade das seguradoras agrícolas no estado do Paraná, no período de 2007 a 2021, por meio da regressão de dados em painel, a qual possibilita a análise de dados de várias unidades, como municípios e empresas, ao longo do tempo. Observou-se que a área segurada, a produtividade efetiva e a variável dummy indenização constituem os principais fatores determinantes da lucratividade das seguradoras tanto na modalidade de custeio como na de produtividade. Entre as empresas analisadas, apenas a Brasilseg e a Mapfre apresentaram resultados negativos, enquanto a Newe, uma empresa iniciante, teve resultados positivos. As contribuições do estudo incluem a compreensão detalhada dos fatores que afetam a lucratividade das seguradoras agrícolas e o fornecimento de informações úteis para o aprimoramento da gestão de riscos e para a formulação de políticas, contribuindo para a sustentabilidade e a competitividade do setor. Brasil 294 29 4 29,4 agropecuária Todavia climáticas sentido desafios Paraná 200 2021 painel unidades tempo Observouse Observou se segurada analisadas negativos Newe iniciante positivos políticas setor 2 29, 20 202

ABSTRACT New technologies developed to control weeds in crops have flourished in recent years. Therefore, the objective of this work was to study the competitive ability of maize hybrids 2B433 (Enlist®), Pioneer 30F53 (VYHR®), and 13K288 PWE (Enlist®) and a conventional (non-transgenic) variety with a distinct biotechnological background when competing against wild poinsettia (Euphorbia heterophylla) and Alexandergrass (Urochloa plantaginea). Crops and competitors were studied in distinct plant proportions: 20:0, 15:5, 10:10, 5:15 and 0:20 plants per pot or 100:0, 75:25, 50:50, 25:75, and 0:100% (crop:weed) in replacement series experiments. Fifty days after emergence, the leaf area and aboveground dry mass were measured. Concomitantly, the photosynthetic and carboxylation efficiency and CO2 concentration were assessed in the leaf mesophyll. Maize hybrid 2B433 (Enlist®) showed better physiological and morphological performance compared to the conventional variety, and hybrids 13K288 PWE (Enlist®) and 30F53 (VYHR®) showed better performance when competing with wild poinsettia or Alexandergrass. The increased competitive ability seems to be due to the greater leaf area and aboveground dry mass reported for 2B433 (Enlist®). Therefore, the competitive ability presented by the hybrids was distinct, and we found no evidence that the transgenic event present in these hybrids affected their competitive ability. years Therefore B 2B43 Enlist®, Enlist Enlist® , F 30F5 VYHR®, VYHR VYHR® K 13K28 (Enlist® nontransgenic non (non-transgenic Euphorbia heterophylla Urochloa plantaginea. plantaginea . plantaginea) proportions 200, 200 20 0, 0 20:0 155, 155 15 5, 5 15:5 1010, 1010 10 10, 10:10 515 5:1 020 0:2 1000, 1000 100 100:0 7525, 7525 75 25, 25 75:25 5050, 5050 50 50, 50:50 2575, 2575 75, 25:75 0100% 0100 100% 0:100 cropweed crop weed (crop:weed experiments emergence measured Concomitantly CO mesophyll (VYHR® Enlist®. 2B4 30F 13K2 (Enlist 2 20: 1 15: 101 10:1 51 5: 02 0: 100: 752 7 75:2 505 50:5 257 25:7 010 0:10 (VYHR 2B 13K 10: 75: 50: 25: 01 0:1

RESUMO Novas tecnologias desenvolvidas para controlar plantas daninhas nas lavouras surgiram nos últimos anos. Diante disso objetivou-se com o trabalho estudar a habilidade competitiva dos híbridos de milho 2B433 (Enlist®), Pioneer 30F53 (VYHR®), 13K288 PWE (Enlist®) e uma variedade convencional (não transgênica), com antecedentes biotecnológicos distintos, ao competir com leiteiro (Euphorbia heterophylla) e papuã (Urochloa plantaginea). O milho e os competidores foram estudados em diferentes proporções de plantas: 20:0; 15:5; 10:10; 5:15 e 0:20 plantas vaso-1 ou 100:0; 75:25; 50:50; 25:75 e 0:100% (cultura: planta daninha) em experimentos de série substitutiva. Aos 50 dias após a emergência das espécies foi determinado a eficiência fotossintética e de carboxilação, a concentração de CO2 no mesofilo foliar, além da área foliar e a massa seca da parte aérea das plantas. O milho híbrido 2B433 (Enlist®) apresentou melhor desempenho fisiológico e morfológico em relação à variedade convencional, e os híbridos 13K288 PWE (Enlist®) e 30F53 (VYHR®) quando em competição com leiteiro e papuã. O aumento da capacidade competitiva parece ser devido à maior área foliar e massa seca da parte aérea relatada para 2B433 (Enlist®). A capacidade competitiva apresentada pelos híbridos é distinta não se encontrando evidências de que o evento transgênico presente na cultura esteja afetando a habilidade competitiva. anos objetivouse objetivou B 2B43 Enlist®, Enlist Enlist® , F 30F5 VYHR®, VYHR VYHR® K 13K28 (Enlist® transgênica, transgênica transgênica) distintos Euphorbia heterophylla Urochloa plantaginea. plantaginea . plantaginea) 200 20 0 20:0 155 15 5 15:5 1010 10 10:10 515 5:1 020 0:2 vaso1 vaso 1 vaso- 1000 100 100:0 7525 75 25 75:25 5050 50:50 2575 25:7 0100% 0100 100% 0:100 (cultura daninha substitutiva carboxilação CO (VYHR® Enlist®. 2B4 30F 13K2 (Enlist 2 20: 15: 101 10:1 51 5: 02 0: 100: 752 7 75:2 505 50:5 257 25: 010 0:10 (VYHR 2B 13K 10: 75: 50: 01 0:1

ABSTRACT Salinity is an abiotic factor that impairs the growth and physiological, biochemical, and molecular mechanisms of plants. Among plants, soybeans are an important crop worldwide, so managing abiotic factors is essential to mitigate plant damage. However, biostimulants, such as melatonin, are being employed to alleviate the stress caused by these factors. Therefore, this study aimed to evaluate the growth, photosynthetic pigments, and water relations of soybean plants subjected to salinity levels and exogenous melatonin application. The research was conducted in experimental area belonging to the Federal Rural University of the Semi-Arid Region, Mossoró, RN, Brazil. The experimental design was randomized blocks, arranged in a 3 x 3 factorial scheme (three salinity levels in the irrigation water - 0.50, 3.00, and 5.00 dS m-1 and three melatonin concentrations - 0, 0.5, and 1 mM) with three replications. At 47 days after planting, plant height, stem diameter, number of leaves, root length, chlorophyll content (a, b, and total), relative water content, leaf moisture, and electrolyte leakage were evaluated. Soybean plants tolerated the effects of salinity on growth aspects, photosynthetic pigments, and water relations up to 3.00 dS m-1, regardless of melatonin concentration. Exogenous application of melatonin mitigated the effects of salt stress on chlorophyll b and relative water content at salinity level of 5.00 dS m-1 and concentration of 1 mM. physiological biochemical worldwide damage However biostimulants Therefore pigments SemiArid Semi Arid Region Mossoró RN Brazil blocks 050 0 50 0.50 300 00 500 5 5.0 m1 m m- 05 0.5 mM replications 4 planting height diameter leaves length a, (a total, total , total) moisture evaluated aspects 3.0 m1, 1, 30 5. 0. 3.

RESUMO A salinidade é um fator abiótico que prejudica o crescimento e os mecanismos fisiológicos, bioquímicos e moleculares das plantas. Entre as plantas, a soja é uma cultura importante mundialmente, portanto, o manejo de fatores abióticos é essencial para mitigar os danos às plantas. No entanto, bioestimulantes, como a melatonina, estão sendo usados para aliviar o estresse causado por esses fatores. Portanto, este estudo teve como objetivo avaliar o crescimento, os pigmentos fotossintéticos e as relações hídricas de plantas de soja aplicadas a níveis de salinidade e aplicação exógena de melatonina. A pesquisa foi realizada em área experimental pertencente à Universidade Federal Rural do SemiÁrido, Mossoró, RN, Brasil. O delineamento experimental foi em blocos casualizados, arranjados em esquema fatorial 3 x 3 (três níveis de salinidade na água de irrigação - 0.50, 3.00 e 5.00 dS m-1 e três concentrações de melatonina - 0, 0.5 e 1 mM), com três repetições. Aos 47 dias após o plantio, foram avaliados a altura da planta, diâmetro do caule, número de folhas, comprimento radicular, teor de clorofila (a, b e total), conteúdo relativo de água, umidade foliar e extravasamento de eletrólitos. As plantas de soja toleraram os efeitos da salinidade nos aspectos de crescimento, nos pigmentos fotossintéticos e nas relações hídricas até 3,00 dS m-1, independentemente da concentração de melatonina. A aplicação exógena de melatonina mitigou os efeitos do estresse salino na clorofila b e no conteúdo relativo de água, no nível de salinidade de 5.00 dS m-1 e concentração de 1 mM. fisiológicos mundialmente portanto entanto bioestimulantes Portanto SemiÁrido Mossoró RN Brasil casualizados 050 0 50 0.50 300 00 3.0 500 5 5.0 m1 m m- 05 0. mM, mM , mM) repetições 4 plantio planta caule folhas radicular a, (a total, total total) eletrólitos 3,0 m1, 1, 30 3. 5. 3,