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Agronomic caracteristhics of castor bean cultivars according to environmental crop
No full textA defini????o da ??poca de semeadura ?? uma etapa importante na
explora????o de uma cultura agr??cola. A ??poca de semeadura tamb??m pode
exercer grande influ??ncia quanto ao rendimento e qualidade das sementes
de mamona (Ricinus communis L.). Assim, o objetivo do presente estudo
foi avaliar a produtividade e a qualidade de sementes de quatro cultivares
de mamona em duas ??pocas de semeadura sob dois sistemas de cultivo. As
quatro cultivares utilizadas foram, IAC 226, IAC 80, Al Guarany 2002 e
BRS 188 Paragua??u, semeadas no in??cio de novembro e in??cio de
dezembro, em que cada ??poca constitui-se de 12 unidades experimentais,
em cada sistema de cultivo. O delineamento experimental foi de blocos
casualizados com tr??s repeti????es. Foram realizadas avalia????es de
emerg??ncia, altura de inser????o do primeiro cacho, altura de planta, n??mero
de cachos por planta, n??mero de cachos por flora????o, per??odo de flora????o,
per??odo de colheita, produtividade, percentagem de casca, peso de 1000
sementes, vigor, germina????o e grau de dorm??ncia nas sementes. Com base
nos resultados obtiveram-se as seguintes conclus??es: 1 - A ??poca de
semeadura influencia o comportamento das cultivares de mamona, por??m
n??o influencia a produtividade de sementes; 2 - As cultivares BRS 188
Paragua??u, IAC 226 e Al Guarany 2002 apresentam sementes de maior
qualidade na 1?? ??poca de semeadura, enquanto que a cultivar IAC 80
apresenta na 2?? ??poca de semeadura.The sowing season definition is an important operation step
in a crop. The sowing season can also play a great effect on the yield and
castor bean seed quality (Ricinus communis L.). Thus the objective of this
study was to evaluate the yield and the seed quality of four castor bean
cultivars on two sowing season and in two cropping systems. The cultivars
were used in this study, that are IAC 226, IAC 80, Al Guarany 2002 and
BRS 188 Paragua??u, where, the first sowing was November and the other
was December, each season was settle in 12 experimental units in each
crop system. The experimental design was randomized complete blocks
with 3 replications. The following evaluations were done: emergence,
insertion height of the central spike, plant height, number of spikes per
plant, number of spikes per bloom, flowering period, harvest period, yield,
hull percentage, weight of seed thousand, seed vigor, germination and
dormancy degree. Based on the results, the following conclusions were
taken: 1 - The sowing season played a role on castor cultivars behavior, but
did not affect the seed yield. 2 - The BRS Paragua??u 188, IAC 226 and Al
Guarany 2002 cultivars produced seeds with higher quality in the first
sowing season, while the IAC 80 cultivar produced seeds with higher
quality in the second sowing season
Agronomic caracteristhics of castor bean cultivars according to environmental crop
No full textThe sowing season definition is an important operation step
in a crop. The sowing season can also play a great effect on the yield and
castor bean seed quality (Ricinus communis L.). Thus the objective of this
study was to evaluate the yield and the seed quality of four castor bean
cultivars on two sowing season and in two cropping systems. The cultivars
were used in this study, that are IAC 226, IAC 80, Al Guarany 2002 and
BRS 188 Paraguaçu, where, the first sowing was November and the other
was December, each season was settle in 12 experimental units in each
crop system. The experimental design was randomized complete blocks
with 3 replications. The following evaluations were done: emergence,
insertion height of the central spike, plant height, number of spikes per
plant, number of spikes per bloom, flowering period, harvest period, yield,
hull percentage, weight of seed thousand, seed vigor, germination and
dormancy degree. Based on the results, the following conclusions were
taken: 1 - The sowing season played a role on castor cultivars behavior, but
did not affect the seed yield. 2 - The BRS Paraguaçu 188, IAC 226 and Al
Guarany 2002 cultivars produced seeds with higher quality in the first
sowing season, while the IAC 80 cultivar produced seeds with higher
quality in the second sowing season.A definição da época de semeadura é uma etapa importante na
exploração de uma cultura agrícola. A época de semeadura também pode
exercer grande influência quanto ao rendimento e qualidade das sementes
de mamona (Ricinus communis L.). Assim, o objetivo do presente estudo
foi avaliar a produtividade e a qualidade de sementes de quatro cultivares
de mamona em duas épocas de semeadura sob dois sistemas de cultivo. As
quatro cultivares utilizadas foram, IAC 226, IAC 80, Al Guarany 2002 e
BRS 188 Paraguaçu, semeadas no início de novembro e início de
dezembro, em que cada época constitui-se de 12 unidades experimentais,
em cada sistema de cultivo. O delineamento experimental foi de blocos
casualizados com três repetições. Foram realizadas avaliações de
emergência, altura de inserção do primeiro cacho, altura de planta, número
de cachos por planta, número de cachos por floração, período de floração,
período de colheita, produtividade, percentagem de casca, peso de 1000
sementes, vigor, germinação e grau de dormência nas sementes. Com base
nos resultados obtiveram-se as seguintes conclusões: 1 - A época de
semeadura influencia o comportamento das cultivares de mamona, porém
não influencia a produtividade de sementes; 2 - As cultivares BRS 188
Paraguaçu, IAC 226 e Al Guarany 2002 apresentam sementes de maior
qualidade na 1ª época de semeadura, enquanto que a cultivar IAC 80
apresenta na 2ª época de semeadura
Quality of artificially cooled and stored soybean seeds
No full textA produção de sementes de alta qualidade requer um programa interno de controle de qualidade bem estabelecido e conduzido. Em razão das condições desfavoráveis de umidade e temperatura de algumas regiões brasileiras durante o período de armazenamento, as sementes requerem cuidados especiais para a manutenção de suas qualidades. Para minorar o efeito dessas condições adversas, vem sendo introduzido pelo setor de beneficiamento de sementes o resfriamento das sementes imediatamente antes do armazenamento. O objetivo deste trabalho foi avaliar a qualidade de sementes de soja resfriadas artificialmente e armazenadas. O experimento foi instalado na empresa Sementes Campo Verde LTDA, município de Campo Verde, Mato Grosso, latitude de 15° 32' 48'' S, longitude de 55° 10' 08'' W e altitude de 736 metros, com sementes dos cultivares Monsoy 8757, TMG 115 RR e BRS Valiosa RR. Foram utilizados dois lotes de cada cultivar, um com sementes resfriadas e outro com não resfriadas. Cada lote era constituído de 360 sacos de 40 kg, medindo 17 x 40 x 70 cm, em 30 camadas de 12 sacos. O resfriamento foi realizado pelo processo dinâmico, com refrigerador CoolSeed, modelo PCS 80, com quatro circuitos refrigeradores, totalizando potência de 130 kW, logo após as sementes passarem pelo beneficiamento. O experimento foi instalado em abril de 2009 e em cada lote foram alocadas nove unidade experimentais (sacos) para as análises de qualidade de sementes, totalizando 54 unidades experimentais. Os nove sacos foram distribuídos nas porções basal, mediana e superior do lote, com três sacos cada uma e distanciadas entre si por seis camadas de sacos. As sementes foram coletadas em três períodos de armazenamento (zero, 60 e 120 dias), retirando-se 1,5 kg de amostra por saco e foram submetidas aos testes de germinação, envelhecimento acelerado, emergência em leito de areia, índice de velocidade de emergência, condutividade elétrica, tetrazólio e sanidade. Concluiu-se que: As temperaturas das massas de sementes de lotes resfriados e ou não resfriados, com 15 dias de armazenamento, já se equiparam e atingem o equilíbrio térmico com a temperatura do armazém. O resfriamento artificial melhorou a manutenção da qualidade fisiológica das sementes dos cultivares Monsoy 8757 e TMG 115 RR, mas não das do cultivar BRS Valiosa RR. O resfriamento artificial pode favorecer a manutenção da qualidade de sementes de soja, altera a incidência de fungos nas sementes durante o armazenamento, porém não se justifica para sementes de cultivares com sementes de alto desempenho fisiológico. Os estudos sobre o resfriamento artificial de sementes devem ser aprofundados.Production of high quality seeds requires a well established and a well conducted internal program of quality control. Due to the unfavorable temperature and humidity conditions prevailing in some Brazilian regions during the seed storage period, the soybean seeds require special care to avoid the loss of their quality. To overcome this problem, some seed producers are artificially cooling the seeds prior to storage. The aim of this study was to evaluate the quality of soybean seeds artificially cooled and stored. The experiment was settled at Sementes Campo Verde seed company located at Campo Verde city, state of Mato Grosso, Brazil, latitude of 15 ° 32 '48''S, longitude of 55 ° 10' 08''W and altitude of 736 meters, with seeds of soybean cultivars Monsoy 8757, TMG 115 RR and BRS Valiosa RR. Two lots of each cultivar, one of cooled seeds and the other of non-cooled seeds were used. Each seed lot (pile) had 360 bags of 40 kg, measuring 17 x 40 x 70 cm, with 30 layers of 12 bags. The seed cooling was done by a dynamic process, with a CoolSeed cooler, model 80 PCS, with four cooler circuits, totaling 130 kW of power, soon after the seeds passed through its classification processes. The experiment began in April 2009 and in each seed pile nine seed bags were used as experimental units for seed quality analysis, totaling 54 experimental units. The nine bags were distributed at three positions, basal, middle and top, with three bags in each position separated by six layers of bags. The seeds were collected at three storage periods (zero, 60 and 120 days), collecting 1.5 kg of sample per bag. Germination, accelerated aging, emergence on sand bed, emergence speed rate, electrical conductivity, tetrazolium and sanitary tests were performed. It was concluded that: The temperatures of soybean seed lots artificially cooled or not, at the 15th day of storage, reach similar temperature and acquire thermal equilibrium with the temperature of the storage facility. The artificial cooling process favored the maintenance of the quality of seeds of Monsoy 8757 and TMG 115 RR, but not of BRS Valiosa RR. The artificial refrigeration may favor the maintenance of soybean seed quality, alters fungi incidence during the storage period, but may not be justifiable for seeds of cultivars of high performance seeds. The artificial cooling of the seeds should be better studied.Conselho Nacional de Desenvolvimento Científico e Tecnológic
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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