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Search Results: 1 - 10 of 80650 matches for " Antonio Carlos Tadeu; "
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Influência de Pterodon emarginatus Vogel sobre atributos físicos e químicos do solo e valor nutritivo de Brachiaria decumbens Stapf em sistema silvipastoril
Pezzoni, Thobias;Vitorino, Antonio Carlos Tadeu;Daniel, Omar;Lempp, Beatriz;
CERNE , 2012, DOI: 10.1590/S0104-77602012000200014
Abstract: sustainable cattle beef production has been associated with woody trees species in grassland area. this study aimed to evaluate the influence of sucupira branca trees (pterodon emarginatus) in physical and chemical properties of soil and on the quality of forage in silvipastoral systems. the study was carried out in nioaque-ms, brazil. in areas occupied with grassland of brachiaria decumbens , predominantly shaded by trees of sucupira - branca, five adult trees had been chosen, in the surroundings of which were drawn six transects leased to angles of 60o between each other. at intervals of five meters along these transects were centralized sampling plots 30 m away, collecting samples from around litter, grass and soil. forage was analyzed for crude protein (cp), neutral detergent fiber (ndf) and in vitro dry matter digestibility (ivdmd). for the soil the studied attributes were: bulk density, macroporosity, microporosity, total porosity, penetration resistance, levels of exchangeable magnesium and potassium. the data were analyzed by simple regressions and correlation. it was concluded that: the organic material in the litter affects positively the physical attributes of soil, improving structural quality; and the presence of trees affects the nutritional value of grass, allowing increased levels of cp and ndf and reducing ivdmd.
Desempenho de Lecanicillium lecanii em meios de cultura contendo vitaminas e concentra??es de extrato de levedura
Wenzel, Inajá Marchizeli;Monteiro, Antonio Carlos;Pereira, Gener Tadeu;
Bragantia , 2007, DOI: 10.1590/S0006-87052007000300007
Abstract: massal production of entomopathogenic fungi for the biological control of insects should be based on the species' nutritional and physiological characteristics and the conditions that favor high growth and sporulation. the performance of lecanicillium lecanii on culture media with various vitamin and yeast extract concentrations was assessed. the jab 02 and jab 45 isolates were grown on media containing a vitamins solution (thiamin, biotin, riboflavin, pyridoxine, nicotinic acid, r-amino benzoic acid) or other containing one vitamin at a time. the same isolates were then cultivated on media supplemented with yeast extract concentrations at 0.0, 0.5, 1.0, 2.0, 3.0 and 5.0 %. mycelia growth was evaluated measuring two colonies diameters, every three days, during the eighteen days incubation period. sporulation was assessed on the 18th day, by counting the conidia. the culture media containing the all-vitamins and that containing thiamin only provided greater growth of the fungus isolates but decreased jab 45 sporulation. nicotinic acid stimulated jab 45 sporulation by 38.5% but did not differ (p>0.05) from the control. little conidial production was observed for jab 02 isolate on media containing vitamins, but an increased sporulation was observed with the addition of riboflavin, biotin and pyridoxine. yeast extract stimulated growth of the isolates jab 02 and jab 45 and sporulation of jab 02 at all concentrations but did not affect (p>0.05) conidia production by jab 45 at any concentration. concentration of 1.0% led to the highest sporulation values and can, therefore, be considered the most favorable since it represent one of the smaller amounts of supplement used.
Crescimento, esporula??o e viabilidade de fungos entomopatogênicos em meios contendo diferentes concentra??es do óleo de nim (Azadirachta indica)
Marques, Renata Paro;Monteiro, Antonio Carlos;Pereira, Gener Tadeu;
Ciência Rural , 2004, DOI: 10.1590/S0103-84782004000600002
Abstract: the association of vegetable extracts with entomopathogenic fungi can increase the efficiency of biological control of pests, to reduce costs and environmental impacts. the present work aimed to evaluate, through minimal inibitory concentration, the effect of the neem oil (nim-i-go) on the growth, esporulation and viability of metarhizium anisopliae, beauveria bassiana and paecilomyces farinosus. for this purpose the pda medium was used containing different concentrations of neem oil (c1: 5% of neem oil, and successively concentrations ? of the previous concentration, until the concentration c11:0,0048% of neen oil). the neen oil reduced the growth of b. bassiana and p. farinosus, which didn?t differ significantly of the control at the concentration c11. similar effect was observed for m. anisopliae with 0,039% of neem oil (c8). the esporulation was also significantly reduced by the neem oil, except at the concentration c11 for b. bassiana; however, no oil effect was observed on the viability of the fungi spores.
Influence of Pterodon emarginatus Vogel on physical and chemical attributes of the ground and nutritional value of Brachiaria decumbens Stapf in silvipastoral system
Thobias Pezzoni,Antonio Carlos Tadeu Vitorino,Omar Daniel,Beatriz Lempp
CERNE , 2012,
Abstract: Sustainable cattle beef production has been associated with woody trees species in grassland area. This study aimed to evaluate the influence of Sucupira Branca trees (Pterodon emarginatus) in physical and chemical properties of soil and on the quality of forage in Silvipastoral Systems. The study was carried out in Nioaque-MS, Brazil. In areas occupied with grassland of Brachiaria decumbens, predominantly shaded by trees of Sucupira – Branca, five adult trees had been chosen, in the surroundings of which were drawn six transects leased to angles of 60° between each other. At intervals of five meters along these transects were centralized sampling plots 30 m away, collecting samples from around litter, grass and soil. Forage was analyzed for crude protein (CP), neutral detergent fiber (NDF) and in vitro dry matter digestibility (IVDMD). For the soil the studied attributes were: bulk density, macroporosity, microporosity, total porosity, penetration resistance, levels of exchangeable magnesium and potassium. The data were analyzed by simple regressions and correlation. It was concluded that: the organic material in the litter affects positively the physical attributes of soil, improving structural quality; and the presence of trees affects the nutritional value of grass, allowing increased levels of CP and NDF and reducing IVDMD.
Trigone ventricular meningiomas: surgical approaches
Zanini, Marco Antonio;Faleiros, Antonio Tadeu Souza;Almeida, Carlos Roberto;Clara, Carlos Afonso;Gabarra, Roberto C.;
Arquivos de Neuro-Psiquiatria , 2011, DOI: 10.1590/S0004-282X2011000500018
Abstract: objective: report our experience with trigone ventricular meningiomas and review the surgical approaches to the trigone. method: from 1989 to 2006, six patients with meningiomas of the trigone of the lateral ventricles underwent microsurgical resection. their clinical features, image, follow up, and surgical approaches were retrospectively analyzed. results: five patients presented with large and one with small volume meningioma. unspecific symptoms occurred in three patients; intracranial hypertension detected in three patients; homonymous hemianopsy in three; and motor deficit present in one patient. three patients were operated by transparietal transcortical approach, two by middle temporal gyrus approach, and one by parieto-occipital interhemispheric precuneus approach. total resection was achieved in all patients without additional deficits. conclusion: judicious preoperative plan, adequate knowledge of anatomy, and use of correct microsurgical techniques are fundamental in achieving complete resection of trigone meningioma with low morbidity.
Lettuce production according to different sources of organic matter and soil cover  [PDF]
Maria Aparecida Moreira, Carlos Allan Pereira dos Santos, Ariovaldo Antonio Tadeu Lucas, Flávio Gabriel Bianchini, Igor Machado de Souza, Pedro Roberto Almeida Viégas
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.52013
Abstract:

Lettuce (Lactuca sativa L.) is one of the leading vegetables produced by farmers in the Itabaiana region, and thus it is important to study means of sustainable management for the crop. The objective of this work was to evaluate the behavior of lettuce with different sources of organic matter and soil cover. Therefore, it was chosen to cultivate Veronica. The experiment was carried out in the experimental field plot of Project Small Farmer—Great Entrepreneur in the municipality of Itabaiana-SE, in 2010. The design was a randomized block design with four replications, with treatments consisting of five sources of organic matter (organic compost, chicken manure, cattle manure, sheep manure, and castor bean) and a control (no fertilizer), all with and without mulch, totaling 12 treatments. We evaluated the characteristics of plant diameter, plant height, fresh and dry root and shoot matter. We also evaluated the influence on the temperature and soil water tension. All productivity characteristics valuated showed the significant interaction between the type of fertilizer and the mulch, except for root dry weight, where only organic manure was a significant factor. When soil mulch was used, the best source of organic matter for growing lettuce was chicken manure, and in the impossibility of using this cover, we recommend the use of organic compost as a source of organic matter, as it showed the best result in the absence of coverage. The cover age also showed good results in relation to a temperature that promoted lower soil water tensions.

Produ??o de Bipolaris euphorbiae em meios de cultura sólidos e líquidos obtidos de gr?os e resíduos agroindustriais
Penariol, Mara Cristina;Monteiro, Antonio Carlos;Pitelli, Robinson Antonio;Pereira, Gener Tadeu;
Bragantia , 2008, DOI: 10.1590/S0006-87052008000400001
Abstract: the introduction of bipolaris euphorbiae as a bioagent for euphorbia heterophylla control depends on fungal conidia production in large amount. this work evaluate to solid and liquid culture media obtained from grains and residues from agriculture industries for conidial production of b. euphorbiae. the fungus was cultivated in different solid media obtained from grains of rice, wheat and sorghun, cracked rice, corn and wheat, ground sorghun, rice, wheat and soybean brans, cassava and soybean peels, cassava peel + soybean bran, sugar-cane bagasse and sugar-cane bagasse + soluble starch. the liquid media were obtained from grains of rice, sorghum and wheat, cracked corn, wheat, soybean and rice bran, cassava and soybean peels, sugar-cane vinasse and water from cassava bran production. the production and viability of conidia and virulence of the fungus were evaluated, and in liquid media assay the micelial biomass was also mesuared. the conidial production is influenced by the type of culture medium and was higher on solid media. the larger productions were obtained using sorghum grains and soybean peel as substrates (474 x 106 conidia g-1 and 472 x 106 conidia g-1, respectively). among the liquid media, the larger conidial production was verified using wheat bran as substrate (1.33 x 106 conidia ml-1). the fungal virulence and viability of b. euphorbiae is not affected by the preparation of solid or liquid media and by the composition of the culture medium. the conidial viability obtained from most solid and liquid media was greater that 98%. only conidia produced in the solid media obtained from cracked rice, cassava + soybean peels and soybean bran showed significantly lower viability.
Desempenho agr?nomico de soja em fun??o da sucess?o de culturas em sistema de plantio direto
Brandt, Eduardo André;Souza, Luiz Carlos Ferreira de;Vitorino, Antonio Carlos Tadeu;Marchetti, Marlene Estev?o;
Ciência e Agrotecnologia , 2006, DOI: 10.1590/S1413-70542006000500007
Abstract: with the objective of evaluating the effect of crop rotation or succession on soybeans agronomic performance in no tillage system, an experiment was carried out in a distrophic red latosol, at the núcleo experimental de ciências agrárias da universidade federal de mato grosso do sul, in the county of dourados-ms. the experimental procedure was a randomized blocks design with nine treatments and four replications. the plots had 36 meters of length and 11 meters of width (396 m2), where were mechanically sawed 26 lines of soybeans, at intervals of 0,45 meters between lines. the treatments were composed of nine systems of crop succession: system 1: corn/vetch/corn/vetch/soybeans; system 2: cotton/oat/cotton/sorghum/soybeans; system 3: soybean/wheat/soybeans/corn/millet/soybeans; system 4: corn/grazing turnip/corn/sorghum/soybeans; system 5: corn/oat/corn/beans/millet/soybeans; system 6: rice/grazing turnip/rice/oat/soybeans; system 7: rice/sorghum/rice/beans/millet/soybeans; system 8: cotton/wheat/cotton/wheat/soybeans and system 9: cotton/grazing turnip/cotton/oat/soybeans. the dry matter of the aerial part of the soybean plants in full flowering stadium, plants height and first pod insertion, number of pods per plant, the productivity and the 100 grains mass, were evaluated. it was concluded that the crop rotation or crops succession was not influenced by the plant height, pods insertion and number of pods per plant. on the other hand, the rotation systems of rice/sorghum/rice/beans/millet/soybean and soybeans/wheat/soybeans/corn/millet/soybean, provided the soybeans the higher grains yield.
Aporte de fitomassa pelas sucess?es de culturas e sua influência em atributos físicos do solo no sistema plantio direto
Silva, Denis Augusto da;Souza, Luiz Carlos Ferreira de;Vitorino, Antonio Carlos Tadeu;Gon?alves, Manoel Carlos;
Bragantia , 2011, DOI: 10.1590/S0006-87052011000100021
Abstract: soil physical degradation, like compaction, reduces water movement and root development. soil structure is considered one of most importance to agriculture and closely related to it are other fundamental properties in soil-plant relationship. the objective of this study was to evaluate the effect of crop sequences on physical attributes. the research was realized in 2004/05 and 2005/06 growing seasons, in a typic clayey rhodic hopludox, under eight years of no-tillage system, at dourados (ms). the experiment was a randomized complete block design, with three replications. treatments were constituted by cover crops: sunflower (helianthus annuus l.), sunnhemp (crotalaria juncea l.), hairy vetch (vicia villosa roth), mixture of sunnhemp + black oat (avena strigosa schreb), and mixture of black oat + hairy vetch + oilseed radish (raphanus sativus l. var. oliferus metzg). differences were not observed in soil density, porosity and aggregation rate when it was cultivated with sunflower, hairy vetch, sunnhemp, or the mixtures. differences were observed in soil physical properties between 0-5 cm layer and 5-10cm - 10-20 cm layers, but no differences between 5-10 cm and 10-20cm layers. soil carbon trend to higher contents in crops with high production of surface residues, although differences in carbon contents were insufficient to modify aggregation.
Disponibilidade de fósforo em dois latossolos argilosos e seu acúmulo em plantas de soja, em fun??o do aumento do pH
Viviani, Carlos Alberto;Marchetti, Marlene Estev?o;Vitorino, Antonio Carlos Tadeu;Novelino, José Oscar;Gon?alves, Manoel Carlos;
Ciência e Agrotecnologia , 2010, DOI: 10.1590/S1413-70542010000100007
Abstract: the best p employment, both applied in the culture as the p soil residual, is possible, due limestone use in clayey soils cultivated and fertilized for many years. aiming at evaluating the ph increase in the soil and the effect of the application of phosphated fertilizer and lime on the sowing on the p availability and its accumulation in soybean plants, two experiments in oxisols, haplortox (one lvd and the other lvdf), with high fertility levels, were carried out. the experimental design was random blocks, in a 4x2x2 factorial, being four ph levels, two p doses and two limestone doses, with four repetitions. soybean plants were cultivated in vases up to flowering. the dry mass weight, p contents and accumulation in the area, p content and p remaining in the soil, were evaluated. p availability in soils increased with ph elevation. for the lvdf, there was an interaction between the ph and the p doses, the p contents in the soil increased with the ph and with the p application. for the lvd, there was an interaction between the ph and the doses of lime applied. the p remaining was reduced by the ph increase in both soils. in both experiments, with the ph increase in the soil, there was an increment in the dry mass production and p accumulated. in clayey soils with a high p content, the ph elevation increases the p availability, providing greater soybean dry mass production.
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