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Search Results: 1 - 10 of 361428 matches for " Ademar P de;Melo "
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Produ??o de alho em fun??o de diferentes níveis de água e esterco bovino no solo
Melo, Jo?o Paulo L.;Oliveira, Ademar P. de;
Horticultura Brasileira , 1999, DOI: 10.1590/S0102-05361999000100004
Abstract: garlic is cultivated during the cold weather period, which is also the dry season in brazilian producing regions. frequent irrigations are therefore needed to supply enough water to the fields. in addition to irrigation, organic fertilization in garlic is a routine practice, with many producers making it the only source of nutrients to plants. thus, this work was carried out to evaluate the effect of different water levels and organic matter in the production and quality of garlic. the experiment was performed in the greenhouse at the center of agrarian sciences, federal university of paraíba, in areia county, from may to october 1995, the cool and dry season. the experiment followed a complete randomized block design with treatments distributed in a factorial 4 x 4 scheme. the first factor corresponded to water levels in soil (65, 75, 85 and l00% of the field capacity) and the second factor corresponded to amounts of tanned bovine manure (0, 20, 30, and 40 t/ha). the experiment was conducted with three replications and plots of six plants, spaced 0.30 m x 0.10 m, using cv. dourados. it was observed that plant length increased with water levels, reaching 44.0 cm and 46.0 cm 60 days after planting (dap), and 45.0 cm and 47.5 cm 90 dap, for 85% and 100% water availability levels in soil, respectively. the maximum bulb weight (14.85 g) was reached with 95.15% of available water in soil, while maximum total production reached 4,604 kg/ha, with 97.93% of available water in soil. each percentage increase in available water in the soil corresponded to an increase of 80.35 kg/ha of commercial bulbs and a reduction of 10.71 kg/ha of non-marketable bulbs. neither the use of bovine manure, nor its interaction with levels of water in soil significantly influenced any of the characteristics.
Desempenho de genótipos de coentro em Areia
Oliveira, Ademar P de;Melo, Paulo César T. de;Wanderley Júnior, Luiz Jorge da G;Alves, Anarlete U;Moura, Macio F de;Oliveira, Arnaldo Nonato P de;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000200024
Abstract: seven coriander genotypes were evaluated (lines htv 9299, htv 7299, htv 0699, htv 0999,htv 0199 and cvs. verd?o and palmeira), in areia county, paraiba state, brazil, from may to july of 2003 in randomized blocks in four replications. verd?o (5,0 kg m-2) and palmeira (4,3 kg m-2) cultivars and the lines htv 9299 (4,4 kg m-2), htv 7299 (4,5 kg m-2) and htv 0999 (4,3 kg m-2), exhibited the greatest yield of green mass (gm), while the line htv 0199, with 2.9 kg m-2 of gm, showed the lowest yield. lines htv 7299 (0.73) and htv 0199 (0.81) presented the largest values for the ratio leaves:stalks. verd?o and palmeira cultivars and lines htv 7299, htv 0999, htv 0699 and 9299 persented 65; 58; 35; 29; 40 and 59%, respectively, of plant bolting (pb) at 42 days after sowing date, while line htv 0199 presented only 11%. line htv 7299 might be an alternative for coriander cropping in areia.
In vitro schistosomicidal effects of the essential oil of Tagetes erecta
Tonuci, Ligia R. S.;Melo, Nathalya I. de;Dias, Herbert J.;Wakabayashi, Kamila A. L.;Aguiar, Gabriela P.;Aguiar, Daniela P.;Mantovani, André L. L.;Ramos, Rafael C.;Groppo, Milton;Rodrigues, Vanderlei;Veneziani, Rodrigo C. S.;Cunha, Wilson R.;Silva Filho, Ademar A. da;Magalh?es, Lizandra G.;Crotti, Ant?nio E. M.;
Revista Brasileira de Farmacognosia , 2012, DOI: 10.1590/S0102-695X2011005000202
Abstract: the in vitro schistosomicidal effects of the essential oil obtained from tagetes erecta l. asteraceae, leaves (te-eo) collected in brazil against schistosoma mansoni worms are reported in this paper. the oil caused a significant decrease in the motor activity at 50 μg/ml as minimal concentration after 24 h. this oil also caused death of all the parasites and the separation of coupled pairs into individual male and female at 100 μg/ml after 24 h. the viability of adult worm groups treated with the te-eo at 100 μg/ml was similar to that of groups treated with praziquantel (positive control). in addition, the oil promoted the inhibition of eggs development at all the tested concentrations. these data indicate that the te-eo could be considered as a promising source for the development of new schistosomicidal agents.
Desempenho de seis híbridos de repolho na época chuvosa de Areia-PB
Oliveira, Ademar P. de;Costa, Janete S.;Costa, Caciana C.;
Horticultura Brasileira , 1999, DOI: 10.1590/S0102-05361999000200018
Abstract: the objective of the work was to evaluate the behaviour of six cabbage hybrids: midore, rotan, saik?, fuyu, matsukaze and roxo in rainy conditions. the study was conducted in the center of agrarian sciences of the federal university of paraíba, in areia-pb, on a red-yellow latossoil, between the period of april to july 1996. the experiment was laid out in a randomised block design, with six treatments and four repetitions, in plots of 20 analyseable plants, spaced 0.80 m between rows and 0.40 m between plants. productivity, medium head weight, format index, head compactness, and tolerance to black rot were evaluated. the results obtained indicated the hybrid midore as an option for cultivation in the rainy season in areia, when considering a productivity of 30.62 t/ha, medium weight of 1.314 kg, compact and rounded head format, and high tolerance to black rot, compared to the performance of matsukaze, considered commercial pattern in areia -pb.
Polymer based gas sensors
Melo Celso P. de
Anais da Academia Brasileira de Ciências , 2000,
Growth, nutrition and yield of eggplant as affected by doses of cattle manure and magnesium thermophosphate plus cow urine
Cardoso, Marinice O;Oliveira, Ademar P de;Pereira, Walter E;Souza, Adailson P de;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000300008
Abstract: the stem growth, nutrition, and fruit yield of eggplant grown with different doses of cattle manure (cm) and magnesium thermophosphate (mt) were studied, according to the central composite matrix of box (8.3-518; 8.3-3,018; 48.3-518; 48.3-3,018; 0.0-1,768; 56.6-1,768; 28.3-0.0; 28.3-3,536; 28.3-1,768). potassium sulfate (ks) was also used (24 g plant-1), as well as a cow urine (cou) solution (10 l 100 l-1 h2o, 500 ml plant-1), applied five times in topdressing. two additional treatments were used: mt without cou and triple superphosphate + urea (ts plus ur), both with nutrient levels (cm, p2o5, and ks) corresponding to the combination 28.3-1,768. the experimental design was blocks at random, with three replications. cm doses improved plant height (ph) (29.1 t ha-1 of cm; 69.84 cm) and stem diameter (37.8 t ha-1; 19.8 mm), fitting into a quadratic model. however, due to the positive interaction between cm and mt, ph increased up to 86.87 cm when the same cm dose was combined with 3,536 kg ha-1 of mt. cm doses had also a quadratic effect over number of fruits, fruit production per plant, average fruit weight (afw), and yield, with respective maximum values corresponding to 53.4 t ha-1 (13 fruit), 55.8 t ha-1 (2,822 g plant-1), 47.8 t ha-1 (210 g fruit-1), and 48.8 t ha-1 (34.3 t ha-1), without significant effects of mt. n and p foliar contents did not change with treatments. cm doses increased k, ca, and s, and decreased mg foliar contents. but, concerning ca, was observed negative interaction of mt. cou showed no effect over the characteristics analyzed. the effect of ts + ur was larger than that of mt + cou on ph and production indexes, except for afw, but did not differ from them as to macronutrient foliar contents.
Rendimento de feij o-caupi em fun o de doses e formas de aplica o de nitrogênio
Oliveira Ademar P. de,Silva Virna R. F.,Arruda Francineuma P. de,Nascimento Irisvaldo S. do
Horticultura Brasileira , 2003,
Abstract: Avaliou-se o efeito de doses e formas de aplica o de nitrogênio sobre o rendimento de vagens e de gr os verdes e secos do feij o-caupi, cv. IPA 206. O experimento foi conduzido na área experimental da UFPB, em Areia, de abril a agosto/2001. O delineamento utilizado foi de blocos casualizados, com os tratamentos distribuídos em esquema fatorial 5 x 2, onde o primeiro fator correspondeu às doses de nitrogênio (0; 25; 50; 75 e 100 kg ha-1) e, o segundo fator, às formas de aplica o (solo e via foliar), em quatro repeti es. Foram utilizadas parcelas de 20 plantas, espa adas de 0,8 x 0,4 m. O rendimento máximo estimado de vagens (11 t ha-1), de gr os verdes (9,3 t ha-1) e de gr os secos (3,6 t ha-1) foi obtido com 62, 61 e 56 kg ha-1 de nitrogênio aplicados no solo, respectivamente. Quando o nitrogênio foi aplicado via foliar os rendimentos de vagens (10 t ha-1), de gr os verdes (8,4 t ha-1) e de gr os secos (3,4 t ha-1) alcan aram valores máximos nas doses de 64, 6 e 59 kg ha-1, respectivamente.
Qualidade do inhame 'Da Costa' em fun??o das épocas de colheita e da aduba??o organica
Oliveira, Ademar P. de;Freitas Neto, Pedro A. de;Santos, Elson S. dos;
Horticultura Brasileira , 2002, DOI: 10.1590/S0102-05362002000100023
Abstract: an experiment was carried out in emepa, jo?o pessoa, brazil between september 98 and june 99 to quantify the dry matter, starch and ash content of yam rhizomes, cv. da costa, in relation to harvest time and organic fertilization. the area consisted of a red-yellow podzolic sandy soil. four levels of cattle manure (5; 10; 15 and 20 t/ha), four levels of chicken manure (2.8; 5.6; 8.4 and 11.2 t/ha), and two harvest times [seven and nine months after planting date (apd))] plus a treatment without organic residue, were studied, arranged in a factorial cheme 2x4x2+1 in randomized blocks, with four replications. dry matter was of 33% and 36% in rhizomes harvested seven and nine months apd, respectively. at seven months apd, dry matter decreased from 35.80% and 34.71%, without cattle or chicken manure, respectively, to 30.03% and 29.25%, for highest levels of cattle manure (20 t/ha) and chicken manure (11.2 t/ha). starch content increased from 26% at seven months apd to 29% at nine months apd. nine months apd, starch content in rhizomes increased (31.6%) with increasing levels of chicken manure (4.8 t/ha). ash content was not affected by harvest dates. however, applying 12.8 t/ha of cattle manure and 6.7 t/ha of chicken manure, rhizomes presented increase in ash content of 0.78% and 0.67% respectively, when harvested nine months apd.
Germina??o e vigor de sementes peletizadas de tomate
Oliveira, Ademar P. de;Bruno, Riselane de L. A.;Alves, Edna U.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2002, DOI: 10.1590/S1415-43662002000200017
Abstract: this study was conducted with the objective of determination of most adequate substrate, temperature and forms of hydration applied in germination and vigor tests of pelleted seeds of tomato. the experiment was carried out at the seed analysis laboratory of the department of agronomy of the federal university of paraíba, brazil. the experimental design adopted was a completely randomized and the treatments were distributed in a 3 x 4 x 2 factorial scheme, the factors studied were temperature (25, 30 oc constant and 20-30 oc alternate), substrates (on and between paper sheets sand and vermiculite) and the hydration for which distilled water and potassium nitrate were used. the effects were evaluated considering percentage of germination, first counting, germination speed and weight of dry matter of seedlings. the substrates sand and vermiculite moistened with distilled water at constant temperatures of 25 or 30 oc were the most efficient for germination and vigor test of pelleted seeds of tomatoes. the alternated temperatures 20-30 oc and substrates on paper and between paper sheets were not found to be adequate for evaluation of pelleted seeds of tomato.
Qualidade do inhame 'Da Costa' em fun o das épocas de colheita e da aduba o organica
Oliveira Ademar P. de,Freitas Neto Pedro A. de,Santos Elson S. dos
Horticultura Brasileira , 2002,
Abstract: Foi desenvolvido um trabalho na EMEPA em Jo o Pessoa, entre setembro/98 e junho/99, com o objetivo de quantificar o teor de matéria seca, de amido e de cinzas em rizomas do inhame, cultivar Da Costa, em fun o das épocas de colheita e da aduba o organica, em solo Podzólico Vermelho-Amarelo, textura arenosa. Estudaram-se níveis de esterco bovino (5; 10; 15 e 20 t/ha) e de esterco de galinha (2,8; 5,6; 8,4 e 11,2 t/ha), duas épocas de colheita (sete e nove meses após o plantio) e uma testemunha, sem resíduo organico. Os tratamentos foram arranjados como fatorial 2x4x2+1, no delineamento de blocos casualizados, com quatro repeti es. O teor de matéria seca nos rizomas aumentou com a maturidade do cará-da-costa, passando de 33% em rizomas colhidos aos sete meses, para 36% em rizoma colhidos aos nove meses. Os teores de matéria seca nos rizomas colhidos aos sete meses decresceram de 35,80% e 34,71%, respectivamente, na ausência de estercos para 30,03% e 29,25%, respectivamente, com as doses de 20 t/ha de esterco bovino e de 11,2 t/ha de esterco de galinha. Na colheita realizada aos sete meses, o teor de amido foi de 26%, elevando-se para 29% na colheita aos noves meses. O teor de amido, na colheita realizada aos nove meses, aumentou com as doses de esterco de galinha, atingindo o máximo de 31,6% com a dose de 4,8 t/ha. O teor de cinzas nos rizomas n o foi influenciado pelas épocas de colheita, mas naqueles colhidos aos nove meses, o teor aumentou com as doses de esterco bovino e de galinha, atingindo o máximo de 0,78 e 0,67%, respectivamente, nas doses de 12,8 e 6,7 t/ha.
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