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Search Results: 1 - 10 of 78540 matches for " SOARES JOSé MONTEIRO "
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Reguladores de crescimento na produ??o de mandioca
Pereira, Araken Soares;Lorenzi, José Osmar;Monteiro, Domingos Antonio;
Bragantia , 1984, DOI: 10.1590/S0006-87051984000200035
Abstract: in two field experiments the effects of gibberellic acid, indoleacetic acid, naphthaleneacetic acid and b1 vitamin, were evaluated as growth regulators on cassava. although the treatments used did not increase the root and stem yields significantly, gibberellic acid at 50ppm showed a tendency to increase root yields when the cassava cuttings were immersed instantaneously or during one hour, or when the 3-month old plants were sprayed.
Produ??o de sementes de mandioca em plantas com um e dois ciclos vegetativos
Monteiro, Domingos Antonio;Lorenzi, José Osmar;Valle, Teresa Losada;Pereira, Araken Soares;Sabino, José Carlos;
Bragantia , 1984, DOI: 10.1590/S0006-87051984000200034
Abstract: production of botanical cassava seeds were evaluated in open polinated fields, from plants with one and two vegetative cycles. plants with two vegetative cycles were cultivated without pruning or pruned at 10cm above the soil. the results showed that the plants with one vegetative cycle yield, in average, 31.70 seeds per plant. plants with two vegetative cycles pruned or not, yielded 23.39 and 64.64 seeds per plant, respectively. although best results were observed with the plants not pruned, there were more difficulties for field work such as spraying, crops management, and fruit bagging due to the tall and over lapping plants. however, these difficulties may not occur when the crops is conducted on poor soils.
Produ o e qualidade de mel o influenciados por matéria organica, nitrogênio e micronutrientes
Faria lementino Marcos Batista de,Costa Nivaldo Duarte,Soares José Monteiro,Pinto José Maria
Horticultura Brasileira , 2003,
Abstract: Avaliou-se a influência de nitrogênio, boro, molibdênio e zinco aplicados por fertirriga o e adi o de esterco de gado ao solo sobre a produtividade e qualidade dos frutos de mel o (Cucumis melo), em dois solos do Submédio S o Francisco. Foram realizados seis experimentos nos anos de 1998, 1999 e 2000, sendo três num Latossolo Vermelho-amarelo, textura arenosa, em Petrolina (PE) e três num Vertissolo, em Juazeiro (BA). O delineamento experimental foi em blocos ao acaso, com quatro repeti es e nove tratamentos, assim constituídos: 1- N1, 2- N2, 3- N3, 4- N1 + EG, 5- N2 + EG, 6- N2 + (B + Mo + Zn), 7- N2 + (B + Mo), 8- N2 + (B + Zn) e 9- N2 + (Mo +Zn), em que N1, N2 e N3 representam 0 ou 30, 80 e 160 kg ha-1 de N, respectivamente; EG, 20 m3 ha-1 de esterco de gado; B, 1,1 kg ha-1 de B; Mo, 0,4 kg ha-1 de Mo e Zn, 4 kg/ha de Zn. O N e os micronutrientes foram aplicados via água de irriga o. A produtividade do mel o apresentou resposta a nitrogênio no Latossolo em 1998 e 2000 e no Vertissolo em 1999. Foi com 80 kg/ha de N que se obtiveram produtividade significativamente superior (32,0 a 40,2 t ha-1) em maior ocorrência dos experimentos. O EG provocou aumentos significativos apenas na produtividadede frutos, em 1998 e no peso médio dos frutos (PMF) em 2000, no Vertissolo. O teor de sólidos solúveis dos frutos aumentou com a aplica o de N no Latossolo, em 2000. Os micronutrientes n o exerceram efeito significativo consistente. Em dois anos, o Vertissolo proporcionou PMF superior ao do Latossolo.
Influência de tricomas do algodoeiro sobre os aspectos biológicos e capacidade predatória de Chrysoperla externa (Hagen) alimentada com Aphis gossypii Glover
Santos, Terezinha Monteiro dos;Boi?a Júnior, Arlindo Leal;Soares, José Janduí;
Bragantia , 2003, DOI: 10.1590/S0006-87052003000200009
Abstract: cotton trichomes, acting as a resistance factor to aphis gossypii glover, can also affect its natural enemies, reducing the efficacy of the control agents and increasing prey searching time. the effects of different trichome densities, observed in three cotton cultivars (antares - low pilosity; cnpa 7h - hirsute and deltapine acala 90 - high pilose), on biological aspects and predatory ability of chrysoperla externa (hagen), fed on a. gossypii reared on iac-22 cotton seedlings, were evaluated. developmental period and viability of c. externa larva were not significantly affected by trichome densities. however, c. externa oviposition period was longer when larva were fed on a. gossypii reared on antares leaves. also, daily and total egg numbers laid by c. externa were not influenced by any cotton cultivars on which it was maintained during the larval phase. highest longevity of c. externa females was observed when they were fed, during the larval phase, on leaves of the lowest pilosity cultivar (antares). during larval period, c. externa consumed, respectively, 540.0; 494.3 and 454.8 aphids, when it was maintained on cnpa 7h, antares and detapine acala 90 cultivars leaves. cotton cultivars showed good compatibilities with the predator species; the results clearly indicate the feasibility of a. gossypii aphid control through the use of c. externa on cotton cultivars with proper trichome densities.
Características agron?micas e culinárias de clones de mandioca
Lorenzi, José Osmar;Pereira, Araken Soares;Monteiro, Domingos Antonio;Ramos, Maria Tereza Baraldi;
Bragantia , 1988, DOI: 10.1590/S0006-87051988000200009
Abstract: eight cassava (manihot esculenta crantz) clones were evaluated concerning root yields and other traits during three growing seasons (1982/83, 1983/84 and 1984/85), in campinas, state of s?o paulo, brazil. field trials were carried out in completely randomized block designs with four replications. the plants were harvested nine months after planting. the clones iac 59-210 (derived from self-fertilization of 'iac mantiqueira'), and iac 289-70 (obtained from srt 797 -'ouro do vale' x srt 1 -'vassourinha paulista' crossing), were superior for most of the traits studied, when compared to two commercial varieties used as control. iac 289-70 presented low cooking time, low hcn levels, high harversting index, average yield of 18.7 t/ha and yellow pulp of roots, indicating the presence of carotenoid pigments. 'iac 59-210' presented the highest average yield (20.6 t/ha).
Estudo de uma progênie de autofecunda??o de mandioca 'Guaxupé'
Pereira, Araken Soares;Lorenzi, José Osmar;Monteiro, Domingos Antonio;Veiga, Ary de Arruda;
Bragantia , 1981, DOI: 10.1590/S0006-87051981000100024
Abstract: this paper reports and discusses the results and behaviour of a 'guaxupé' self-pollinated cassava progeny in campinas, state of sao paulo. datas obtained suggest that 'guaxupé' is homozigous for some physical characters of aereal part and roots, because 92,1% of plants from the progeny considered were similar with that cultivar. it was also verified that 52% and 30% of them presented higher yield of roots and harvesting index than the check cultivar.
Contamina??o do solo com antraceno e creosoto e o crescimento vegetal e a coloniza??o micorrízica pelo Glomus etunicatum
Paula, Alessandra Monteiro de;Siqueira, José Oswaldo de;Soares, Claúdio Roberto Fonsêca Sousa;
Revista Brasileira de Ciência do Solo , 2007, DOI: 10.1590/S0100-06832007000400020
Abstract: soil contamination by organic compounds, especially by the petroleum-derived, polycyclic aromatic hydrocarbons (pahs), is a growing problem with serious environmental consequences. to evaluate the environmental impact of these products it is important to understand their effects on plants and the associated microbiota. the effects of pahs on growth and mycorrhizal colonization of brachiaria brizantha and pueraria phaseoloides were evaluated here. two pahs, anthracene and creosote, were applied to a soil infested with the mycorrhizal fungus glomus etunicatum at varied concentrations: anthracene (0; 0.25; 0.5; 0.75 and 1 g kg-1 soil) and creosote (0; 0.5; 1; 2 and 3 g kg-1 soil). this soil was packed into plastic tubes (290 cm3) where test plants were sown and grown for six weeks. it was found that anthracene did not affect pueraria growth and had a slight stimulus on brachiaria growth at the lowest concentration, whereas creosote had no effect on pueraria either, but inhibited brachiaria growth. both contaminants inhibited mycorrhizal colonization in pueraria by about 90 %, compared to the control. at concentrations below those found in contaminated soils, am colonization was inhibited by 50 %. the potential impact of these products on plant-am fungus relationships is quite evident here. no colonization was found in brachiaria, regardless of the presence of pahs. the results showed a differentiated sensitivity of the plants to the contaminants and their marked negative effect on g. etunicatum root colonization. in the evaluated concentration range, pueraria was insensitive to both compounds, which indicates the species for further studies on phytoremediation of areas under the impact of these contaminants.
Fontes de fósforo aplicadas na cultura do mel?o via água de irriga??o
Brito, Luiza Teixeira de Lima;Soares, José Monteiro;Faria, Clementino Marcos Batista de;Costa, Nivaldo Duarte;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2000, DOI: 10.1590/S1415-43662000000100004
Abstract: this study was carried out with the objective of evaluating the effect of three phosphorus sources applied conventionally and through trickle irrigation on melon crop (cucumis melo l.), hybrid af-682. the sources of phosphorus were simple superphosphate, monoammonium phosphate (map) and phosphoric acid applied up to 30 and 42 days after germination through trickle irrigation and conventionally. the experiment was conducted in a completely randomized block design, with four replications. all the treatments had the same amount of phosphorus (120 kg ha-1 of p2o5) according to soil analysis. the highest commercial fruit yields were obtained with phosphoric acid applied through trickle irrigation up to 30 and 42 days after germination (28.90 and 32.20 t ha-1, respectively), not differing from map applied through trickle irrigation up to 42 days after germination (27.95 t ha-1). the sources of phosphorus and modes of application did not influence the mean weight of fruits (1.43 kg), 65% of fruits being of type 8 to 10; however differences were observed in the soluble solids content at harvest time, highest content (brix 12.53o) was obtained in phosphoric acid treatment.
Bower ratio-energy balance associated errors in vineyards under dripping irrigation
Soares, José Monteiro;Azevedo, Pedro Vieira De;Silva, Bernado Barbosa Da;
Revista Brasileira de Meteorologia , 2007, DOI: 10.1590/S0102-77862007000200008
Abstract: this study was conducted at the bebedouro experimental station in petrolina-pe, brazil, to evaluate the errors associated to the application of the bowen ratio-energy balance in a 3-years old vineyard (vitis vinifera, l), grown in a trellis system, irrigated by dripping. the field measurements were taken during fruiting cycle (july to november, 2001), which was divided into eigth phenological stages. a micrometeorological tower was mounted in a grape-plants row in which sensors of net radiation, global solar radiation and wind speed were installed at about 1.0 m above the canopy. also in the tower, two psicometers were installed at two levels (0.5 and 1.8 m) above the vineyard canopy. two soil heat flux plates were buried at 0.02 m beneath the soil surface. all these sensors were connected to a data logger 21 x of campbell scientific inc., programmed for collecting data once every 5 seconds and storage averages for every 15 minutes. a comparative analysis were made among four bowen ratio accepting/rejecting rules, according to the methodology proposed by spano et al. (2000): br1 - values of b calculated by bowen (1926) equation; br2 - values of b as proposed by verma et al. (1978) equation; br3 - exclusion of the b values obtained as recommended by unland et al. (1996) and br4 - exclusion of the b values calculated as proposed by bowen (1926), out of the interval (-0.7 < b < 0.7). constacted that the unland et al. (1996) and soares (2003) accepting/rejection rules were better than that of verma et al. (1978) for attenuating the advective effects on the calculations of the bowen ratio. the comparison of br1 with br2 rules showed that the statistical errors reaching maximum values of 0.015. when comparing br1 with br3 e br4, the b errors reaching maximum values of 5.80 and 3.15, respectively.
Exigências hídricas da videira na Regi o do Submédio S o Francisco
Pesquisa Agropecuária Brasileira , 2000,
Abstract: O trabalho objetivou a estimativa das necessidades hídricas da videira (Vitis vinifera L.), cv. Itália, sob as condi es edafoclimáticas da Regi o do Submédio S o Francisco. A parte experimental foi conduzida no campo experimental de Bebedouro da Embrapa-Centro de Pesquisa Agropecuária do Trópico Semi-árido, no município de Petrolina, PE, durante o período de maio a agosto de 1996. A evapotranspira o da cultura foi determinada pelo método do balan o hídrico no solo, e a evapotranspira o de referência foi estimada pelo método de Penman, visando avaliar o comportamento do coeficiente de cultura (Kc) ao longo do ciclo da cultura. O parreiral, com cinco anos de idade, foi conduzido em sistema de latada a 2 m acima da superfície do solo, num espa amento de 4 m x 2 m e irrigado diariamente por gotejamento. O consumo hídrico diário máximo da cultura foi de 4,33 mm dia-1, totalizando 333,6 mm no período de observa es. Os valores de Kc variaram de 0,50 a 0,74. Determinou-se uma curva característica de Kc para o ciclo vegetativo da videira, a qual permite obter o Kc diário em fun o dos dias após a poda.
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