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Controle químico da forma galícola da filoxera Daktulosphaira vitifoliae (Fitch, 1856) (Hemiptera: Phylloxeridae) na cultura da videira
Botton, Marcos;Ringenberg, Rudiney;Zanardi, Odimar Zanuzo;
Ciência Rural , 2004, DOI: 10.1590/S0103-84782004000500002
Abstract: grape phylloxera daktulosphaira vitifoliae (fitch, 1856) (hemiptera: phylloxeridae) is the main grape pest. adults and nymphs feeds on leaves and roots but major damage is observed on roots of own rooted vitis vinifera. damage on leaves is important in root stock nurseries where chemical control is necessary. this study was conducted to evaluate insecticides to control the leaf form in a paulsen 1103 nursery in field condictions. imidacloprid (provado 200 sc, 40ml 100l-1) and thiamethoxam (actara 250 wg, 30g 100l-1) reduced foliar damage in more than 90%, providing better control than deltamethrin (decis 25 ce, 40ml 100l-1) and fenitrothion (sumithion 500 ce, 150ml 100l-1) current standarts for pest control. acephate (orthene 750 br, 100g 100l-1) and abamectin (vertimec 18 ce, 80ml 100l-1) were not efficient.
Gera??o de imagem georreferenciada do município de Santa Maria utilizando imagem de satélite e sistemas de informa??es geográficas
Piroli, Edson Luís;Pereira, Rudiney Soares;
Ciência Rural , 1999, DOI: 10.1590/S0103-84781999000300016
Abstract: this work was developed at the laboratory of remote sensing and geoprocessing of department of rural engineering of university federal of santa maria, had as objective the creation of a georreferenced image of santa maria county - rs. made possible the development through the associated by the digital landsat 5 - tm and they geographic information system idrisi and siter. the proceedings to again imagery georeferenced were elaborated from the color compositae, georreferencing techniques and the out line municipality boundary. the softwares gis and the satellite image utilized were effective to reach the main goal of this work.
Controle químico da forma galícola da filoxera Daktulosphaira vitifoliae (Fitch, 1856) (Hemiptera: Phylloxeridae) na cultura da videira
Botton Marcos,Ringenberg Rudiney,Zanardi Odimar Zanuzo
Ciência Rural , 2004,
Abstract: A filoxera Daktulosphaira vitifoliae (Fitch, 1856) (Hemiptera: Phylloxeridae) é considerada a principal praga da videira. O inseto se alimenta da parte aérea e raízes sendo que os maiores prejuízos s o observados em raízes de Vitis vinifera cultivada como pé-franco. O dano nas folhas é importante em viveiros, quando o ataque ocorre nos ramos utilizados como porta-enxertos, resistentes à forma radícola. Este trabalho foi realizado com o objetivo de selecionar inseticidas que possam ser empregados como substitutos aos fosforados e piretróides no manejo da forma galícola da filoxera. Os inseticidas imidacloprid, thiamethoxam, acephate, abamectin, deltamethrin e fenitrothion, foram avaliados em condi es de campo, sob infesta o natural, em plantas matrizes do porta-enxerto Paulsen 1103. Imidacloprid (Provado 200 SC, 40mL 100L-1) e thiamethoxam (Actara 250 WG, 30g 100L-1) reduziram as injúrias causadas pela forma galícola da filoxera nos ponteiros em nível superior a 90%, proporcionando controle superior aos inseticidas deltamethrin (Decis 25 CE, 40mL 100L-1) e fenitrothion (Sumithion 500 CE, 150 mL/100L) considerados referência no controle do inseto. Os inseticidas acephate (Orthene 750 BR, 100g 100L-1) e abamectin (Vertimec 18 CE, 80mL 100L-1) n o foram eficientes.
Density dependent magnetic field and the equation of state of hyperonic matter
Rudiney Hoffmann Casali,Débora Peres Menezes
Physics , 2013,
Abstract: We are interested on the effects, caused by strong variable density dependent magnetic fields, on hyperonic matter, its symmetry energy, equations of state and mass-radius relations. The inclusion of the anomalous magnetic moment of the particles involved in a stellar system is performed, and some results are compared with the cases that do not take this correction under consideration. The Lagrangian density used follows the nonlinear Walecka model plus the leptons subjected to an external magnetic field.
Desenvolvimento e exigências térmicas de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) em ovos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae)
Fonseca, Fabiana L. da;Kovaleski, Adalecio;Foresti, Josemar;Ringenberg, Rudiney;
Neotropical Entomology , 2005, DOI: 10.1590/S1519-566X2005000600011
Abstract: the aim of this study was to evaluate the development of trichogramma pretiosum riley on eggs of bonagota cranaodes (meyrick) under different temperatures. b. cranaodes eggs were maintained under seven constant temperatures (14, 18, 20, 22, 25, 28 and 30oc), 70 ± 10% r.h. and, 14 h l. forty replicates with 20 parasitized eggs each were kept in glass tubes (8.5 x 2.5 cm) covered with a plastic film. the method of hyperbole was used to calculate the temperature threshold (tb) and the thermal constant (k). the tb obtained was 11.9oc and to thermal constant was 153,4 dd. the most favorable temperature range was from 25oc to 30oc, at which the shortest egg-adult development period and the highest survivorship were observed.
Dinamica das áreas de floresta nativa no Rio Grande do Sul no período de 1988 a 2020
Hendges, Elvis Rabuske;Pereira, Rudiney Soares;Andres, Juliano;
Ciência Rural , 2012, DOI: 10.1590/S0103-84782012000500011
Abstract: land use patterns and the potential misuse of our planet's natural resources have recently called the attention of an increasing worldwide number of studies in the area of scenario simulation. in this context, the present study aims at simulating the native forest scenario of the southern state of rio grande do sul, brazil, for the 2020, by locating and quantifying in a map the evolution of forest in this state. land use patterns were classified based on satellite images from the years 1988, 1998 and 2007. the forest evolution map was cross-checked with several thematic maps of physical and human aspects and defined the markov transition matrix and the evidence weights, both of which are requirements for the calibration of the stochastic model. the simulation of rio grande do sul's forest landscape for the year 2020 showed an increase of the native forest in almost all regions of the state, covering an area of more than 5,113km2.
Biologia comparada e exigências térmicas de Cryptoblabes gnidiella em dieta artificial
Ringenberg, Rudiney;Botton, Marcos;Garcia, Mauro Silveira;Nondillo, Aline;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005001100002
Abstract: this work was conducted to evaluate the development of cryptoblabes gnidiella in artificial diets, and to know the thermal requirements of the species. biology was studied under laboratory conditions (26±1oc, relative humity of 70±10% and l/d 14:10 h) using three artificial diets based on bean (d1), white bean and pellet of alfafa (d2) and of white bean (d3). thermal requirements of honeydew moth were estimated at four constant temperatures (18oc, 22oc, 26oc e 30oc) using d2 artificial diet. based on fertility life table, d2 was the most appropriate diet to rear c. gnidiella in laboratory providing a total viability of 53.30%. the lower threshold temperature and thermal requirements for the biological cycle (egg to adult) were 12.26oc and 569.91 day degrees, respectively. the specie completes 3.25 generations in caxias do sul, rs and 9.19 in petrolina, pe.
Adequa??o de uma dieta artificial para a cria??o de Spodoptera cosmioides (Walk.) (Lepidoptera: Noctuidae) em laboratório
Bavaresco, Alvimar;Garcia, Mauro S.;Grützmacher, Anderson D.;Ringenberg, Rudiney;Foresti, Josemar;
Neotropical Entomology , 2004, DOI: 10.1590/S1519-566X2004000200005
Abstract: the biology of spodoptera cosmioides (walk.) was studied on three artificial diets with different protein sources (d1 = white bean, yeast extract, soybean flour, powder milk and wheat germ; d2 = 'carioca' bean and yeast extract; d3 = corn flour, wheat germ and yeast extract). the objective of this research was to determine the most suitable diet for mass rearing s. cosmioides in laboratory. the species is highly polyphagous, and for this reason we hypothesized that diets that are suitable for other lepidoptera can allow its development and fulfill the minimum requirements of biological quality, quantity and economy. although s. cosmioides has completed the biological cycle on the three diets, the d1 was the most suitable for its rearing and produced the fastest development, higher total survival and pupae weight, as well as higher net reproduction rate (ro), intrinsic rate of natural increase (rm) and finite rate of natural increase (l). the number of instars varied from six to seven, predominating six in d1 and d3; in d2, half the population presented six instars and half seven. females presented pupae duration significantly lower that the males in all diets, thus emerging earlier. adult longevity was not affected by the diets, while total fecundity was higher in d1 and d2. in conclusion, the diet 1 is recommended to mass rearing s. cosmioides in the laboratory.
Biologia e exigências térmicas de Spodoptera cosmioides (Walk.) (Lepidoptera: Noctuidae)
Neotropical Entomology , 2002, DOI: 10.1590/S1519-566X2002000100007
Abstract: the biology of spodoptera cosmioides (walk.) was studied under different temperatures and its thermal requirements were determined, aiming to aid the rearing of this insect in the laboratory. embryonic and post-embryonic periods were evaluated at seven different temperatures (14, 18, 22, 25, 28, 30 and 32oc) under environmental chamber conditions, with 14h photophase. the caterpillars were reared on an artificial diet containing white bean, soybean meal, yeast extract, wheat germ and powder milk as source of protein. the extent of the embryonic period decreased with the increase of temperature within the 14oc to 25oc temperature range, remaining constant between 28oc and 32oc. for the other phases (caterpillar, pre-pupa and pupa) an inverse relationship between temperature and duration was observed within the 14oc to 30oc temperature range, extending to 32°c for pupae. duration of pupal phase for males was larger than for females resulting in asynchronous adult emergence. the temperature thresholds for the embryonic, larval, pre-pupal, pupal periods and total cycle were 9.34oc, 11.65oc, 9.65oc, 11.08oc and 11.23oc, with thermal constants of 62,73 degree-days (dd), 254.61dd, 33.42dd, 177.55dd and 525.11dd, respectively. evaluating the pupal phase alone, the threshold temperatures were 11.25oc for males and 10.81oc for females, with thermal constants of 188.26dd for males and 165.47dd for females. for total cycle, the threshold temperature and the thermal constant for males were 11.28oc and 535.85dd, whereas for females the same variables had values of 11.15oc and 513.17dd. so, the most adequate temperature for the development of s. cosmioides is within the range of 25oc and 28oc, where 9.6 to 11.7 generations of the insect can be annually obtained, in laboratory conditions.
Biologia comparada de Spodoptera cosmioides (Walk.) (Lepidoptera: Noctuidae) em cebola, mamona, soja e feij?o
Bavaresco, Alvimar;Garcia, Mauro Silveira;Grützmacher, Anderson Dionei;Foresti, Josemar;Ringenberg, Rudiney;
Ciência Rural , 2003, DOI: 10.1590/S0103-84782003000600001
Abstract: the biology of spodoptera cosmioides (walk.) was studied on four natural hosts (onion leaves, castor oil plant, soy cv. embrapa 48 and bean cv. carioca). the duration and viability of immature phases and total cycle, instar number, pupals weight, sexual ratio, percentage of deformed adults and adults not released of pupal beg, adults' longevity, fecundity and eggs viability were evaluated. it was observed in castor oil plant and onion shorter duration and larger viability of total cycle (39.7 days and 21.7%; 40.5 days and 21.8%, respectively), in contrast of soy (46.0 days and 3.9%). the pupal weight was 444.6 mg on onion, 420.0mg on bean, 396.6mg on castor oil plant and 298.7 mg on soy. onion and castor oil plant leaves had a predominance of six larval instars, also happening seven for some of them, while in soy the occurrence of seven prevailed, also happening eight instars, indicating less nutritional adaptation of this host. the females had pupal phase significantly smaller than the males in all the hosts, making adults emergency happen before the males. in onion, the longevity of the adults was significantly superior comparing with the other hosts. the fecundity was better on onion and castor oil plant (3224 and 3206 eggs/female, respectively), therefore on soy was observed 1353 eggs/female. in bean leaves, the development of the insect was harmed by morphologic characters, which promoted high mortality in the larval phase.
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