Due to the high incidence of COVID-19 case numbers internationally, the World Health Organization (WHO) declared a Public Health Emergency of global relevance, advising countries to follow protocols to combat pandemic advance through actions that can reduce spread and consequently avoid a collapse in the local health system. This study aimed to evaluate the dynamics of the evolution of new community cases, and mortality records of COVID-19 in the State of Pará, which has a subtropical climate with temperatures between 20 and 35 °C, after the implementation of social distancing by quarantine and adoption of lockdown. The follow-up was carried out by the daily data from the technical bulletins provided by the State of Pará Public Health Secretary (SESPA). On 18 March 2020, Pará notified the first case of COVID-19. After 7 weeks, the number of confirmed cases reached 4756 with 375 deaths. The results show it took 49 days for 81% of the 144 states municipalities, distributed over an area of approximately 1 248 000 km² to register COVID-19 cases. Temperature variations between 24.5 and 33.1 °C did not promote the decline in the new infections curve. The association between social isolation, quarantine and lockdown as an action to contain the infection was effective in reducing the region's new cases registration of COVID-19 in the short-term. However, short periods of lockdown may have promoted the virus spread among peripheral municipalities of the capital, as well as to inland regions.

Many factors can influence the spread of viruses and respiratory infections. Studies have suggested that there is a direct relationship between environmental issues and population density with cases of COVID-19. In this sense, this research aims to analyze, through correlational study and Krigagem, the relationship of meteorological and demographic variables with cases of COVID-19 in regions of subtropical climate in Brazil. The results suggest that population and demographic density (hab/km ² ) are risk factors for the spread of SAR-Cov-2 and an increase in the daily case record of COVID-19. The distribution of cases according to age group did not present a significant disparity between men and women. Relative humidity (RH)%, average temperature °C, minimum temperature °C, maximum temperature °C, wind speed m/s and daily precipitation (rain) mm show negative relationships with cases of COVID-19 in regions of humid equatorial climate. Analysis between associations of environmental factors, wind, temperature and HR in a region is extremely important to understand the dynamics of SARS-Cov-2 in the environment. In the northern region of Brazil, low wind speed, high temperatures and high RH are observed, environmental factors that, when associated, reduce the transmission process because it hinders the movement of the virus in the environment. In this sense, it is suggested that the transmission of SARS-CoV-2 in this region is disseminated through fluids in the air between man/man and by contact between objects/men. Therefore, strategic public policies to combat the pandemic must consider the environmental factors of the regions involved and control and/or blocking the transit of people.

ANÁLISE DO ESPAÇAMENTO SOBRE O DESENVOLVIMENTO FISIOLÓGICO DE DIFERENTES CULTIVARES DE ALFACE NATHANY BRAGA SANTOS1; ALEXANDRE DA TRINDADE LÉLIS2; MÁRCIA CRISTINA MELO MONTE PALMA3; GABRIELA GOMES COSTA4; MARYJANE DINIZ DE ARAÚJO GOMES5 E FÉLIX LELIS DA SILVA6 1Graduada em Ciências Biológicas; Instituto Federal de Educação Ciências e Tecnologia do Estado do Pará – Campus Belém, Rua WD4, quadra 148, casa 13B, Parque Verde, 66633-590, Belém, Pará, Brasil, e-mail: braganathanys@gmail.com 2Programa de Pós-graduação em Ciências Florestais; Universidade Federal Rural da Amazônia – Campus Belém, Rua WD4, quadra 148, casa 13B, Parque Verde, 66633-590, Belém, Pará, Brasil, alexandre_lelis18@hotmail.com 3Graduanda em Agronomia; Instituto Federal de Educação Ciências e Tecnologia do Estado do Pará – Campus Castanhal, Alameda Mogno, 161, Nova Olinda, 68742-124, Castanhal, Pará, Brasil, palmacristina04@gmail.com 4Graduanda em Agronomia; Instituto Federal de Educação Ciências e Tecnologia do Estado do Pará – Campus Bragança; Alameda Mogno, 161, Nova Olinda, 68742-124, Castanhal, Pará, Brasil, gabrielagomes1401@gmail.com 5Coordenação de Agropecuária, Instituto Federal de Educação Ciências e Tecnologia do Estado do Pará – IFPA, Avenida dos Bragançanos, S/N, Vila Sinhá, 68600-000, Bragança, Pará, Brasil, maryjane.gomes@ifpa.edu.br 6Coordenação Geral de Ensino, Instituto Federal de Educação Ciências e Tecnologia do Estado do Pará – Campus Castanhal, Travessa Caldeirão de Brito, 100, casa 11, 68741-070, Castanhal, Pará, Brasil, felix.lelis@ifpa.edu.br 1 RESUMO A alface é uma das hortaliças folhosas mais produzidas globalmente, apresentando produção mundial de aproximadamente 45 milhões de toneladas por ano. No entanto, seu cultivo na região amazônica apresenta desafios devido às condições climáticas desfavoráveis. Uma alternativa viável para o cultivo dessa importante hortaliça nessa região é a hidroponia em ambiente protegido. Todavia, deve-se ter atenção quanto ao espaçamento entre plantas, pois esse é um fator crucial para o bom desenvolvimento e alcance de altas produtividades em sistemas hidropônicos. Também vêm sendo desenvolvidas novas cultivares de alface capazes de resistir condições climáticas adversas. Nesse contexto, objetivou-se neste estudo analisar o efeito do espaçamento nas condições morfológicas de diferentes cultivares de alface (BRS Leila, Joction Rz e Jade), produzidas em sistema hidropônico com três espaçamentos (25 x 25; 25 x 30 e 30 x 30 cm) em uma propriedade localizada em Moju, PA. O experimento foi conduzido em casa de vegetação, em sistema hidropônico do tipo NFT, com delineamento experimental em blocos casualizados em esquema fatorial 3 x 3 com 10 repetições. Visando um excelente desempenho por planta, bom desenvolvimento e qualidade da parte aérea, atendendo o mercado mais exigente, indica-se a cultivar BSR Leila no espaçamento 30 x 30 cm. Palavras-chave: BRS Leila, Jade, Joction RZ, hidropônico, clima. SANTOS, N. B.; LÉLIS, A. T.; PALMA, M. C. M. M.; COSTA, G. G.; GOMES, M. D. A.; SILVA, F. L. SPACING ANALYSIS ON THE PHYSIOLOGICAL DEVELOPMENT OF DIFFERENT LETTUCE CULTIVARS 2 ABSTRACT Lettuce is one of the most widely produced leafy vegetables in the world, with a global production of approximately 45 million tons per year. However, its cultivation in the Amazon Region presents challenges due to unfavorable climatic conditions. A viable alternative for growing this important leafy vegetable in this region is hydroponics in greenhouses. However, attention must be given to the spacing between plants, as this is crucial for good development and achieving high yields in hydroponic systems. New lettuce cultivars that are capable of withstand adverse climatic conditions have also been developed. In this context, the aim of this study was to analyze the effects of spacing on the morphological conditions of different lettuce cultivars (BRS Leila, Joction Rz, and Jade) produced in a hydroponic system with three spacings (25 × 25, 25 × 30 and 30 × 30 cm) on a property located in Moju, PA. The experiment was conducted in a greenhouse in an NFT hydroponic system with a randomized block experimental design in a 3 × 3 factorial scheme with 10 replications. To achieve excellent performance per plant, good development, and high quality of the aerial part and meet the needs of the most demanding market, the BSR Leila cultivar with a 30 × 30 cm spacing is recommended. Keywords: BRS Leila, Jade, Joction RZ, hydroponic cultivation, climate.

A piscicultura enfrenta desafios significativos, como a escassez de assistência técnica especializada e o conhecimento limitado de muitos produtores, fatores que impactam diretamente a produtividade e a rentabilidade da atividade. Diante desse cenário, foi desenvolvido o NetunoMobile, um sistema web voltado para o gerenciamento e monitoramento da produção piscícola, com foco no cultivo de peixes dos gêneros Colossoma, Piaractus e seus híbridos. A metodologia incluiu uma pesquisa bibliográfica para identificar as principais dificuldades enfrentadas pelos piscicultores, seguida pelo desenvolvimento da plataforma e realização de testes com avaliadores, compostos por alunos, especialistas da área e profissionais de outros setores. O NetunoMobile oferece ferramentas para manejo da criação, controle financeiro, análise da produção, geração de relatórios dinâmicos e visualização gráfica dos dados, permitindo maior precisão na tomada de decisão estratégica. Os testes revelaram que a plataforma melhora a eficiência produtiva, reduz desperdícios, otimiza a gestão financeira e promove maior previsibilidade dos resultados. Além disso, identificou-se a possibilidade de aplicação do sistema como ferramenta didática no ensino de piscicultura e suporte técnico para a extensão rural. Assim, conclui-se que o NetunoMobile representa uma inovação tecnológica essencial para pequenos e médios piscicultores, viabilizando um modelo de produção mais eficiente, sustentável e rentável.

This study analyzed how rural extension and technical assistance influence aquaculture development in the state of Pará through an integrative literature review. The analyzed studies show that the consolidation of aquaculture depends not only on the state’s water and productive potential, but also on the articulation among credit, regulation, training, productive organization and market access. The findings indicate that technical assistance plays a structuring role by reducing management weaknesses, improving planning capacity, connecting producers to public policies and supporting greater production stability. The review also revealed that the constraints affecting aquaculture vary across territories and include logistical limitations, restricted access to financing, discontinuity of technical support, organizational fragility and commercialization barriers. It is concluded that rural extension and technical assistance should not be understood merely as operational support, but as a central axis of aquaculture governance in Pará, linking production, territory, public policy and market. The study highlights the need for continuous, specialized and territorially sensitive actions capable of reducing the gap between the state’s productive potential and the effective consolidation of aquaculture.