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| Registros recuperados: 19 | |
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| Leite,Germano Leão Demolin; Picanço,Marcelo; Jham,Gulab Newandram; Moreira,Márcio Dionízio. |
| Kale Brassica oleracea var. acephala is attacked by whitefly Bemisia tabaci, aphid Brevicoryne brassicae and Thrips tabaci. One of the main reasons for extensive insecticide application is the lack of information about factors that control insect population. The objectives of this study were to investigate the relationships between predators and parasitoids, organic compound leaves, levels of leaf nitrogen and potassium, total rainfall, relative humidity, sunlight and median temperature on the abundance of whitefly, aphid, and thrips in kale genotype "Talo Roxo". The beating tray method, direct counting and magnifying lens were used to estimate the number of these pests, predators and parasitoids. Median temperature, sunlight and relative humidity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Population dynamics; Nonacosane; Climatic factors; Braconidae. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000300001 |
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| Auad,Alexander Machado; Moraes,Jair Campos de. |
| The aphid Uroleucon ambrosiae (Thomas) is considered a pest of hidroponically-grown lettuce, but basic and applied information on its control are scarce in Brazil. The aim of this study was to determine the effect of different temperatures on biological aspects and life history of U. ambrosiae (Thomas) developing on hydroponic lettuce (Lactuca sativa L.) crop. Newly emerged nymphs were placed on 4-cm discs of hydroponic lettuce, var. Verônica, which were maintained on 5-cm Petri dishes, at temperatures of 15, 20 and 25ºC and 14 h photophase, and inside a greenhouse, within micro-cages at room temperature. The duration of development in all nymphal stages varied inversely to temperature. Nymphs maintained at 20ºC and 25ºC, had similar development period.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Aphids; Biology; Climatic factors. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400008 |
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| Paraluppi,Norival D.; Castellón,Elóy G.. |
| Five species of calliphorid flies, Chrysomya megacephala (Fabricius, 1794), C. putoria (Wiedemann, 1830), C. albiceps (Wiedemann. 1819), Cochliomyia macellaria (Fabricius, 1775) and Phaenicia eximia (Wiedemann, 1819), were collected hourly belween 6:00 and 18:00h., during five consecutive days per month for 12 moths; using home-made traps baited with rotting bovine lung. The data were statisticaly analyzed with relation to precipitation, temperature, relative humidity and luminosity. The results indicate that precipitation must have acted upon the seasonal abundance of the species, and that these responded equally to temperature, relative humidity and luminosity, throughout the entire day, except for P. eximia, which exhibited greater sensibility to these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calliphoridae; Flies; Climatic factors; Flight activity. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000400012 |
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| Hilário,Sergio D.; Ribeiro,Márcia de F.; Imperatriz-Fonseca,Vera L.. |
| Flight activity of foragers of four colonies of Plebeia remota (Holmberg, 1903) was registered from December 1998 to December 1999, using an automated system (photocells and PLC system). The colonies originated from two different regions: Cunha, state of São Paulo, and Prudentópolis, state of Paraná, Brazil. Flight activity was influenced by different climatic factors in each season. In the summer, the intensity of the correlations between flight activity and climatic factors was smaller than in the other seasons. During the autumn and winter, solar radiation was the factor that most influenced flight activity, while in the spring, this activity was influenced mainly by temperature. Except in the summer, the various climatic factors similarly influenced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stingless bees; Foraging; Climatic factors; Seasonality; Geographic distribution. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000300004 |
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| Khan,MKI; Ali,M; Akter,MA; Zaman,S; Miah,G. |
| ABSTRACT Hilly chickens were characterized from January 2015 to September 2016 considering climate factors (light and heat). The experimental birds were divided into three groups (heat stress; light and control). The heat was generated in the chicken’s shelter by a black shaded light (Lantern) for two to three hours more after sunset. A lighting device (Lantern) was kept in the chicken’s shelter for the same period for increasing daylight duration. The individual chicken’s egg production, egg weight and mature live weight were studied from onset of egg production. It was observed that reddish brown hilly type chicken produced more (100.80 no/year/chicken) and larger sized (43.21g) eggs than spotted chicken (83.4 no/year/chicken and 40.46g). Among the three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chicken; Climatic factors; Microsatellite; Genetic diversity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400731 |
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| Souza, Darclet Terezinha Malerbo; Centro Universitário Moura Lacerda; Silva, Flávio Augusto Santos; Centro Universitário Moura Lacerda. |
| O objetivo deste experimento foi estudar o comportamento forrageiro das abelhas africanizadas Apis mellifera, no decorrer do ano. As coletas foram realizadas na área experimental do Centro Universitário Moura Lacerda, Ribeirão Preto, Estado de São Paulo. Uma vez por mês, durante 12 meses, era realizada uma avaliação da atividade de coleta dessas abelhas anotando-se, das 7h às 18h, 10 min. em cada horário, o número de abelhas que entrava na colmeia carregando pólen ou néctar, com cinco repetições por mês. As abelhas A. mellifera coletaram néctar durante todo o dia aumentando sua frequência até às 12h, e para pólen, essas abelhas preferiram o período da manhã, até as 11h. Concluiu-se que não houve diferença significativa tanto para coleta de néctar quanto... |
| Tipo: Pesquisa experimental |
Palavras-chave: 5.04.01.00-9 Apis mellifera; Fatores climáticos; Forrageamento; Néctar; Pólen Ecologia dos Animais Domésticos e Etologia Apis mellifera; Climatic factors; Foraging; Nectar; Pollen. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/9252 |
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| Reis,Renato F.; Timmer,Lavern W.; Goes,Antonio de. |
| The black spot of citrus (Citrus sp.) is caused by Guignardia citricarpa with ascospore production depending on temperature, leaf wetness, and rainfall. The number of ascospores produced was monitored using a spore trap and climatic factors were recorded using an automated meteorological station of 'Natal' and 'Valencia' sweet orange (Citrus sinensis) orchards in Mogi Guaçu in the state of São Paulo, Brazil, from November 2000 to March 2001. The fruits were bagged to prevent infection and the bags removed from different sets of fruit for one week during each of the 18 weeks of the season in both orchards. Ascospores were produced during the entire experimental period, from spring through summer, primarily after rain events. In both orchards, ascospore... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Phyllosticta citricarpa; Climatic factors. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582006000100005 |
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| Sousa,Viviane R. de; Paiva,Paulo C. de; Takiya,Daniela M.; Dias-Pini,Nívia da S.; Couri,Márcia S.. |
| ABSTRACT Agromyzidae (Insecta: Diptera) is a cosmopolitan family of acalyptrate flies, with almost 3,000 species worldwide distributed. Most species are leaf miners on a large number of plants. Among them, Liriomyza Mik, 1894 is a large genus of leaf-miner species that can cause significant damage to economically important crops and is considered agricultural pests, such as Liriomyza sativae Blanchard, 1938 and Liriomyza huidobrensis (Blanchard, 1926), which are herein investigated. The present study deals with the impact of climatic factors (temperature, humidity, and precipitation), seasonality, and parasitoid abundance on leaf-miner infestation during one year in five cultivated crops in Northeastern Brazil. Climatic factors for instance had different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf-miners; Climatic factors; Plant-insect interaction. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212021000100201 |
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| Phoncharoen,Phanupong; Banterng,Poramate; Vorasoot,Nimitr; Jogloy,Sanun; Theerakulpisut,Piyada; Hoogenboom,Gerrit. |
| ABSTRACT: Details on growth and yield for cassava planted on different dates are useful for determining suitable genotypes for particular growing seasons. Our aim was to study growth and yield of cassava planted on different dates. Four cassava genotypes (Kasetsart 50, Rayong 9, Rayong 11 and CMR38-125-77) were evaluated using a randomized complete block design (RCBD) with four replications in six growing periods (20 Apr, 25 May, 30 June, 5 Oct, 10 Nov and 15 Dec 2015-2016) at Khon Kaen, Thailand. Soil properties were determined prior to planting, and crop traits and weather data were recorded. The six planting dates had a statistically significant effect on all crop traits. Low temperatures and solar radiation related to low biomass accumulation rates and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climatic factors; Environment; Growth analysis; Growing date. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001500376 |
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| Silva,Givanildo Zildo da; Martins,Cibele Chalita; Jeromini,Tatiane Sanches; Pereira,Francisco Élder Carlos Bezerra; Bruno,Riselane de Lucena Alcântara. |
| ABSTRACT The quality of seeds is influenced by the climatic conditions of the production field. The identification of characteristics of the best forage seed fields allows the improvement of the sector. In this study, the aim was to identify climatic characteristics of producing regions that may affect the physical and physiological quality of Brachiaria brizantha cv. BRS 'Piatã' seeds. Seeds from 10 lots were evaluated for purity, other seeds, mass of a thousand seed, water content, germination, dormancy, emergence, seedling emergence in sand and seedling emergence in the field. Temperature and precipitation data of each production field from flowering to harvest were obtained. The means of treatments were compared by the Scott-Knott test at 5%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climatic factors; Commercialization of seeds; Tropical forage grasses. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000400552 |
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| Arrua,Luan L. De C.; Costa,Edilson; Bardiviesso,EstefâNia M.; Nascimento,Daniele M. Do; Binotti,Flavio F. Da S.. |
| ABSTRACT Mangabeira is a native fruit tree from Brazil, which provides a delicious fruit to taste and beneficial to health, whose information about the seedlings production will assist the entire productive chain of this important species. The aim of this research was to evaluate protected environments and substrates compositions in the formation of mangabeira seedlings. For this, two greenhouses with different screens were used, the first covered with aluminized thermo-reflective screen of 50% shading and the second with black screen of 50% shading. Inside the environments, were tested substrates derived from combinations of various proportions of bovine manure (M), soil (S), medium vermiculite (MV), super fine vermiculite (FV) and fine sand (FS). For... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hancornia Speciosa; Protected environment; Climatic factors; Vermiculite; Sand. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000600984 |
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| HILÁRIO,S. D.; IMPERATRIZ-FONSECA,V. L.; KLEINERT,A. de M. P.. |
| Flight activity of Plebeia pugnax Moure (in litt.) was studied in six colonies coming from Cunha, SP, from July to October 1994. Twice a week, from 8:00 a.m. to 6:00 p.m., for 5 minutes every half-hour, all the bees entering and leaving the hives were counted. Six hundred counts were made and the materials that foragers carried were recorded. Data were analysed in relation to temperature, relative humidity, light intensity and day time. Foragers' flight activity was relatively constant in a wide range of temperature, from 22°C to 34°C. The minimum temperature for the beginning of flight activity was 14°C. Effective flight activity (when foragers of all colonies were leaving the hives) occurred at 15°C. These bees also flew within a wide range of relative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flight activity; Stingless bees; Climatic factors. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000200003 |
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| Bastos,Edson Alves; Folegatti,Marcos Vinícius; Faria,Rogério Teixeira de; Andrade Júnior,Aderson Soares de; Cardoso,Milton José. |
| The objective of this work was to adapt the CROPGRO model, which is part of the DSSAT system, for simulating the cowpea (Vigna unguiculata) growth and development under soil and climate conditions of the Baixo Parnaíba region, Piauí State, Brazil. In the CROPGRO, only input parameters that define crop species, cultivars, and ecotype were changed in order to characterize the cowpea crop. Soil and climate files were created for the considered site. Field experiments without water deficit were used to calibrate the model. In these experiments, dry matter (DM), leaf area index (LAI), yield components and grain yield of cowpea (cv. BR 14 Mulato) were evaluated. The results showed good fit for DM and LAI estimates. The medium values of R² and medium absolute... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Models; Climatic factors; Edaphic factor; Water availability; DSSAT. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002001000005 |
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| Registros recuperados: 19 | |
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