Gladiolus production as a function of growing environment conditions: a scientometric analysis

Lately, an increase in the commercialization of gladiolus has been observed, making it necessary to know information that contributes to the optimization of its production. Such information can be obtained from the scientometric analysis. Thus, the objective of this work was to perform a scientometric analysis of the global scientific literature to quantify the studies on gladiolus and to specify in the Brazilian scientific literature the resultsof works on the cultivation environment. The scientometric analysis was performed in the Scopus database for the entire historical data series until the year 2021. A total of 1402 scientific papers published on gladiolus culture were obtained with an average publication rate equal to 0.62 papers year-1. These papers were mostlypublished as scientific articles in English language in journals focusing on horticulture and India is the countrywith the highest number of publications. About the cultivation environment, the studies conducted in Brazil indicate that the production of gladiolus should be carried out in periods that do not occur frosts and also for average air temperature below 35°C and soil humidity above 75% of field capacity. Despite the important results of these works, the global scientific literature still lacks more information that adequately assists in the increase of gladiolus production.Lately, an increase in the commercialization of gladiolus has been observed, making it necessary to know information that contributes to the optimization of its production. Such information can be obtained from the scientometric analysis. Thus, the objective of this work was to perform a scientometric analysis of the global scientific literature to quantify the studies on gladiolus and to specify in the Brazilian scientific literature the result

Projeto Flores para todos — Incentivando a produção de flores no Distrito Federal

O presente artigo objetiva informar sobre o projeto intitulado Flores para Todos, cujo propósito é incentivar a permanência do jovem no campo e fornecer uma alternativa de renda para pequenos produtores. O projeto aconteceu em uma escola de campo, Escola Classe Kanegae, localizada no Bairro Núcleo Bandeirante, Brasília - Distrito Federal. A realização do projeto foi dividida em duas etapas, com encontros remotos e presenciais, sob a coordenação de professora da Universidade de Brasília, participação de alunos da Universidade de Brasília e apoio de extensionistas da EMATER-DF. O projeto atendeu crianças e outras pessoas envolvidas diretamente no conceito de agricultura familiar no que se refere à produção e técnicas de cultivo de espécies florícolas, em especial a cultura do Gladíolo

Agrometeorological modeling of sugarcane in the soil and climatic conditions of the midwest goiano

Submitted by JÚLIO HEBER SILVA ([email protected]) on 2018-02-08T12:09:10Z No. of bitstreams: 2 Tese - Jordana Moura Caetano - 2017.pdf: 1316232 bytes, checksum: 3ad854051d9dbce860e70eef1a19ac7a (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Approved for entry into archive by Liliane Ferreira ([email protected]) on 2018-02-08T12:45:52Z (GMT) No. of bitstreams: 2 Tese - Jordana Moura Caetano - 2017.pdf: 1316232 bytes, checksum: 3ad854051d9dbce860e70eef1a19ac7a (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2018-02-08T12:45:52Z (GMT). No. of bitstreams: 2 Tese - Jordana Moura Caetano - 2017.pdf: 1316232 bytes, checksum: 3ad854051d9dbce860e70eef1a19ac7a (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-12-14Brazil is the worlds largest producer of sugarcane and its derivatives (sugar and ethanol). Due to the growing demand of these products, there has been a constant expansion of land with sugarcane in the country, mainly in the state of Goiás, which currently has the second largest harvest and production crop area countrywide. Considering its complex production system, which involves different growing environments (climate and soil), the characterization of the growth, development and maturation of sugarcane is one of the most fundamental aspects for determining the quality and quantification of the raw material, besides assisting in the planning of harvesting activities. In tropical (hot) regions, such as midwest Goiás, the reduction of grown and development rates and the process of accumulation in soluble solids of stems occurs mainly as a function of soil water deficit and atmospheric water demand. The quantification of these responses from the crop to the environment can be estimated by mathematical models generated as a function of agrometeorological and soil water variables. A mathematical model was used as a tool for estimating grown development and plant production, also the agricultural sector has benefited from these models of crop forecasting. However, the estimate of soluble solids accumulation in sugarcane still requires studies since the knowledge of the procedure that involves interaction of the agrometeorological conditions and the physiological responses of the crop is insufficient. Thus, the objectives of this research were: characterization of the biometric behavior and soluble solids content of sugarcane in response to the natural environment and soil conditions of the midwest region of Goiás, identification of the water depth in the soil that causes the reduction of growth rates and development of the crops that contributes to the accumulation of soluble solids in the stems, creation of empirical models for the determination of biometric parameters and the soluble solids content of the plant in response to the growing time and agrometeorological variables, elaboration of multiple linear regression models of soluble solids content, (°Brix) and total recoverable sugars (ATR, kg t-1 ) due to the agrometeorological variables and water depth in the soil to obtain the estimation errors of the models and their validation. The following shows the research stucture: after the general introduction and bibliographic review on the subject, the first article presents the characterization and trend of behavior of the grown and development of sugarcane for the environment conditions and soil water table in midwest Goiás, and the second article shows agrometeorological models generated for the estimation of soluble solids (°Brix) and total recoverable sugars (ATR, kg t-1 ) in order to use them as an alternative of estimation in crop environments similar to the conditions that were generated.O Brasil é o maior produtor mundial de cana-de-açúcar e de seus derivados (açúcar e etanol). Devido à crescente demanda por estes produtos, vem sendo observada a constante expansão das áreas com cultivo da cana-de-açúcar no país, principalmente no Estado de Goiás, que atualmente possui a segunda maior área colhida e produção da cultura no país. Considerando esse complexo sistema de produção, do qual envolvem diferentes ambientes de cultivo (clima e solo), a caracterização do crescimento, desenvolvimento e maturação da cana-de-açúcar é um dos aspectos fundamentais para a determinação da qualidade e quantificação da matéria-prima, além auxiliar no planejamento das atividades de colheita. Em regiões tropicais (quentes), como é o caso do centro-oeste goiano, a redução das taxas de crescimento e desenvolvimento e o processo de acúmulo de sacarose nos colmos ocorre, principalmente, em função do déficit hídrico do solo e demanda hídrica atmosférica. A quantificação dessas respostas da cultura ao ambiente pode ser estimada por meio de modelos matemáticos gerados em função de variáveis agrometeorológicas e da água no solo. A modelagem matemática vem sendo utilizada como ferramenta para a estimativa do crescimento, desenvolvimento e produção vegetal e o setor agrícola tem sido beneficiado com estes modelos de previsão de safra. Contudo, a estimativa do acúmulo de sacarose na cana-de-açúcar ainda demanda de estudos, visto que o conhecimento que se tem dos processos que envolvem a interação das condições agrometeorológicas e as respostas fisiológicas da cultura ainda é insuficiente. Desta forma, os objetivos desse estudo foram: caracterizar o comportamento biométrico e de teor de sólidos solúveis da cana-de-açúcar em resposta às condições de ambiente e solo naturais do centro-oeste goiano, identificar a lâmina de água no solo que gera a redução das taxas de crescimento e desenvolvimento da cultura e que contribui para o acúmulo de sacarose nos colmos, gerar modelos empíricos de determinação de parâmetros biométricos e teor de sólidos solúveis da planta em resposta ao tempo de cultivo e a variáveis agrometeorológicas, elaborar modelos de regressão linear múltipla de estimativa do teor de sólidos solúveis (°Brix) e açúcares totais recuperáveis (ATR, kg t-1 ) em função de variáveis agrometeorológicas e lâmina de água no solo e obter os erros de estimativa dos modelos e realização de sua validação. A estrutura do trabalho é a seguinte: após a introdução geral e revisão bibliográfica sobre o tema, no primeiro artigo é apresentada a caracterização e tendência de comportamento do crescimento e desenvolvimento da cana-de-açúcar para as condições de ambiente e lâmina de água no solo do centro-oeste goiano; e no segundo artigo são apresentados modelos agrometeorológicos gerados para a estimativa do teor de sólidos solúveis (°Brix) e açúcares totais recuperáveis (ATR, kg t-1 ) de forma a utilizá-los como alternativa de estimação em ambientes de cultivo semelhantes às condições em que foram gerados

Tendências dos modelos hidrológicos integrados aos sistemas de informações geográficas a partir da cienciometria

The remote sensing and Geographic Information Systems (GIS) development have encouraged and improved the use and spansion of hydrological models worldwide. This development allows the use of hydrological models, simulating watersheds systems operation in a more simple, economical and realistic way. In order to maximize this integration, new computational tools, hydrological models and GIS are being developed. This study aimed to apply the scientometric study to quantify and verify the tendencies of the scientific publications of hydrological models and their integration with geographic information systems (GIS). Scientific papers search was accomplished in Scopus database, using the following terms: modeling OR model* AND hydrologic* OR hidrological AND “Geographic* Information* System*” OR “GIS”, and the data were obtained on September 21, 2015. It can be observed, in general, an increase in the number of papers published according to time, in years (r = 0.96) and the same trend was observed for Brazilian studies, starting from 2006. Moreover, the main direction of these studies is to develop methodologies that could integrate hydrological models with GIS.O desenvolvimento de técnicas de sensoriamento remoto e Sistemas de Informações Geográficas (SIGs) têm incentivado e melhorado o uso e expansão dos modelos hidrológicos em todo o mundo. Este desenvolvimento permite a utilização da modelagem hidrológica para simular de forma mais simples, econômica e realista, o funcionamento dos sistemas das bacias hidrográficas. A fim de otimizar essa integração, novas ferramentas computacionais, modelos hidrológicos e SIGs estão sendo desenvolvidos, possuindo ampla utilização. O objetivo deste trabalho foi realizar um estudo cienciométrico para quantificar e verificar as tendências das publicações científicas sobre modelos hidrológicos e suas integrações aos sistemas de informação geográfica (SIGs). A busca dos trabalhos científicos foi realizada na base de dados Scopus, utilizando os seguintes termos: modeling OR model* AND hydrologic* OR hidrological AND “Geographic* Information* System*” OR “GIS”, sendo que o levantamento de dados foi realizado no dia 21 de setembro de 2015. Observou-se, de maneira geral, um aumento global no número de trabalhos publicados sobre o tema em função do tempo, em anos (r = 0,96), e que os trabalhos brasileiros apresentam a mesma tendência no aumento das publicações a partir do ano de 2006. Além disso, o principal viés desses trabalhos é o desenvolvimento de metodologias de integração dos modelos hidrológicos com os SIGs

Sugarcane yield estimation for climatic conditions in the state of Goiás

ABSTRACT Models that estimate potential and depleted crop yield according to climatic variable enable the crop planning and production quantification for a specific region. Therefore, the objective of this study was to compare methods to sugarcane yield estimates grown in the climatic condition in the central part of Goiás, Brazil. So, Agroecological Zone Method (ZAE) and the model proposed by Scarpari (S) were correlated with real data of sugarcane yield from an experimental area, located in Santo Antônio de Goiás, state of Goiás, Brazil. Data yield refer to the crops of 2008/2009 (sugarcane plant), 2009/2010, 2010/2011 and 2011/2012 (ratoon sugarcane). Yield rates were calculated as a function of atmospheric water demand and water deficit in the area under study. Real and estimated yields were adjusted in function of productivity loss due to cutting stage of sugarcane, using an average reduction in productivity observed in the experimental area and the average reduction in the state of Goiás. The results indicated that the ZAE method, considering the water deficit, displayed good yield estimates for cane-plant (d > 0.90). Water deficit decreased the yield rates (r = -0.8636; α = 0.05) while the thermal sum increased that rate for all evaluated harvests (r > 0.68; α = 0.05)

Gladiolus production as a function of growing environment conditions : a scientometric analysis

Lately, an increase in the commercialization of gladiolus has been observed, making it necessary to know information that contributes to the optimization of its production. Such information can be obtained from the scientometric analysis. Thus, the objective of this work was to perform a scientometric analysis of the global scientific literature to quantify the studies on gladiolus and to specify in the Brazilian scientific literature the results of works on the cultivation environment. The scientometric analysis was performed in the Scopus database for the entire historical data series until the year 2021. A total of 1402 scientific papers published on gladiolus culture were obtained with an average publication rate equal to 0.62 papers year-1. These papers were mostly published as scientific articles in English language in journals focusing on horticulture and India is the country with the highest number of publications. About the cultivation environment, the studies conducted in Brazil indicate that the production of gladiolus should be carried out in periods that do not occur frosts and also for average air temperature below 35 °C and soil humidity above 75% of field capacity. Despite the important results of these works, the global scientific literature still lacks more information that adequately assists in the increase of gladiolus production.Faculdade de Agronomia e Medicina Veterinária (FAV

Propriedades aerodinâmicas dos grãos de quinoa (Chenopodium quinoa Willd)

O conhecimento das propriedades aerodinâmicas de produtos agrícolas é importante para o dimensionamento do maquinário utilizado no beneficiamento, armazenamento e operações de colheita e pós-colheita. O objetivo deste estudo foi determinar as propriedades aerodinâmicas dos grãos de quinoa. Para tal, determinaram-se as propriedades físicas (dimensões e massa específica), velocidade terminal, coeficiente de arrasto e o número de Reynolds das cultivares BRS Piabiru e Real, para sete teores de água (12,1; 12,8; 13,9; 15,3; 16,6; 18,0 e 19,5%b.s.). A cultivar Real possui dimensões maiores e massa específica menor que a BRS Piabiru para a faixa de teor de água estudada. Os resultados mostraram que a velocidade terminal aumentou de 2,70 para 3,26 m s-1 e 2,57 para 3,13 m s-1 para as cultivares BRS Piabiru e Real, respectivamente, com a elevação do teor de água dos grãos, enquanto o coeficiente de arrasto diminuiu para as respectivas cultivares, de 1,91 para 1,42 e 2,77 para 2,44. O aumento da umidade dos grãos também provocou aumento no número de Reynolds em ambas cultivares. Conclui-se que o teor de água e as características físicas das cultivares têm efeito significativo nas propriedades aerodinâmicas dos grãos de quinoa.The aerodynamic properties of seeds and grains are fundamental knowledge for the dimensioning of the machinery used in the processing, storage, harvest and post-harvest operations. The objective of this study was to determinate aerodynamic properties of two quinoa cultivars grains within different moisture contents. The cultivars BRS Piabiru and Real determined their physical properties (dimensions and density), terminal velocity, drag coefficient and Reynolds number, for seven moisture content (12.1, 12.8, 13.9, 15.3, 16.6, 18.0 and 19.5%d.b.). Cultivar Real have greater dimensions and lower densities than BRS Piabiru for the moisture content range studied. From the lowest to highest moisture content, terminal velocity varied from 2.70 to 3.26 m s-1and from 2.57 to 3.13 m s-1 for cultivars BRS Piabiru and Real, respectively, while drag coefficient varied from 1.91 to 1.42 and from 2.77 to 2.44. Reynolds number is positive related to the moisture content for both cultivars. It is concluded that the moisture content and the physical characteristics of the cultivars have a significant effect on the aerodynamic properties of quinoa grains.Faculdade de Agronomia e Medicina Veterinária (FAV

Geographical patterns in climate and agricultural technology drive soybean productivity in Brazil - Fig 2

<p>Average climate suitability of the ecological niche models for (a) current climate and (b) future climate scenarios, and (c) environmental suitability shifts of the future scenario when compared to the current scenario. Positive values in (c) indicates municipalities that will increase the environmental suitability for soybean cultivation in future scenarios.</p

The partitioning of local adjusted R² to explain soybean productivity in Brazilian municipalities.

<p>(A) Explained purely effect by Suitability; (B) Explained purely effect by Technology; (C) shared variation between Suitability and Tecnhology.</p