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Search Results: 1 - 10 of 48098 matches for " Adriana U.;Alves "
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Lima beans production and economic revenue as function of organic and mineral fertilization
Alves, Adriana U;Oliveira, Ademar P de;Alves, Anarlete U;Dornelas, Carina SM;Alves, Edna U;Cardoso, Edson A;Oliveira, Arnaldo Nonato P de;Cruz, Iordan da S;
Horticultura Brasileira , 2008, DOI: 10.1590/S0102-05362008000200024
Abstract: lima beans (phaseolus lunatus l.) are alternative food and income sources for the population of northeastern brazil. in this region, lima beans are consumed either as green or dry grains. however, low yields have been observed, a challenge that could be overcome by adequate organic and mineral fertilization. this work intended to assess lima beans yield, cultivar raio de sol, as affected by doses of cattle manure in the presence and absence of mineral npk fertilization. the experiment was carried out at the federal university of paraíba, brazil, from september, 2004 to may, 2005. the experimental design was of randomized blocks, with four replications, 40-plant plots, spaces of 1.00 x 0.50 between and within rows, respectively. treatments were displayed in a 6 x 2 factorial, corresponding to manure doses (0, 10, 20, 30, 40 and 50 t ha-1) and presence and absence of npk. green and dry grain, and pod yields were analysed, as well as the economic revenue for pods and dry grains. to measure the economic efficiency, pods and dry grains were employed as the exchange units. maximum pod yields (12.6 and 11.2 t ha-1) were achieved with 21.4 and 23 t ha-1 of manure, with and without npk, respectively. highest green grain yields (11.1 and 9.9 t ha-1) were obtained with 21.3 and 22.9 t ha-1 of manure, with and without npk, respectively. the highest yield of dry grains (3.5 t ha-1) was obtained with 26.6 t ha-1 of manure combined with npk. in the absence of npk, the use of cattle manure resulted in an average dry grain yield of 2.0 t ha-1. the maximum economic efficiency for pod production was reached with 17 and 18.6 t ha-1 of manure, with predicted net incomes of 2.88 and 3.36 t ha-1 of pods, in the presence and absence of npk, respectively. for dry grains, the maximum economic efficiency was achieved with 23 t ha-1 of manure, in the presence of npk, which produced a net revenue of 2.12 t ha-1 of dry grains.
Produ??o de feij?o-fava em fun??o do uso de doses de fósforo
Oliveira, Ademar P. de;Alves, Edna U.;Alves, Adriana U.;Dornelas, Carina S.M.;Silva, Jandiê A. da;P?rto, M?nica L.;ALves, Amarlete V.;
Horticultura Brasileira , 2004, DOI: 10.1590/S0102-05362004000300008
Abstract: phosphorus is an important mineral nutrient for vegetables. this work was conducted at universidade federal da paraíba, in areia, brazil, from december/2001 to july/2002, aiming to evaluate the effect of levels of p2o5 on the yield of lima bean, cv. "orelha de vó". the experimental design was a randomized block with five treatments (0; 100; 200; 300; 400 and 500 kg ha-1 of p2 o5), and four replications. each plot consisted of 40 plants spaced 1.0 m between rows and 0.50 m between plants in each row. the estimated maximum yield of green and dry beans (5.2 and 2.7 t ha-1, respectively) corresponded, to the dosages of 309 and 302 kg ha-1 of p2o5. the levels 291 kg ha-1 and 281 kg ha-1 of p2o5 provided, respectively, the greater economic return for the yield of green (4.1 t ha-1) and dry (1.8 t ha-1) beans. the most economic levels included more than 80% of those dosages responsible for the maximum yields and indicated the economic viability of phosphorus utilization on lima bean crop. the p2o5 levels which promoted the maximum yield and the maximum economic return for green and dry beans yield were respectively, with 57.1; 56.3; 55.0 and 53.8 mg dm-3 of available p for the extractor of melich 1. the lima bean response to the phosphorus fertilization in soils with similar fertility used in the present study, for green and dry beans yield, will be reduced at levels of available p superior to 55.0 and 53.8 mg dm-3. the average concentration of p in the leaves of lima bean, 120 days after sowing, in function of levels of p2o5 was of 3.4 g kg-1. for the soil of this study the application of 291 and 281 kg ha-1 of p2o5 is more recommended to establish the lima bean respectively, for green and dry beans yield.
Avalia o de linhagens e cultivares de feij o-caupi, em Areia, PB
Oliveira Ademar P. de,Sobrinho José Tavares,Nascimento Jo?o T.,Alves Adriana U.
Horticultura Brasileira , 2002,
Abstract: Dez linhagens e três cultivares de feij o-caupi foram avaliadas em ensaio conduzido em Areia (PB), de abril a julho de 2000, em Latossolo Vermelho-Amarelo. As linhagens TE-92-199-20F;TE-90-170-29F; TE-90-170-76F; CNCX-405-17F; CNCX-409-12F; TE-90-180-10F; TE 87-108-6G, Linhagem avan ada e as cultivares, IPA 206 e BR-03 Tracuateua, apresentaram comprimento e peso médio de vagens dentro dos padr es comerciais e número médio de vagens por planta dentro do padr o para a espécie (acima de vinte vagens). A produtividade de vagens verdes e de gr os verdes e secos obtida pelas linhagens TE-90-170-76F; CNCX-409-12F; CNCX-405-17F; TE-90-180-10F; TE-87-108-6G, Linhagem avan ada e pela cultivar IPA 206, foram superiores a 5,0 t/ha para vagens verdes, a 3,0 t/ha para gr os verdes e a 1,2 t/ha para gr os secos, consideradas altas para o feij o-caupi. As maiores produtividade de vagens verdes (6,5 e 6,5 t/ha), de gr os verdes (3,8 e 3,8 t/ha), e de gr os secos (1,8 e 1,8 t/ha) foram obtidas, respectivamente, com as linhagem CNCX-409-12F e cultivar IPA 206.
Resposta do quiabeiro às doses de fósforo aplicadas em solo arenoso
Oliveira, Ademar P. de;Dornelas, Carina Seixas M.;Alves, Adriana U.;Alves, Anarlete U.;Silva, Jandiê Araújo da;Oliveira, Arnaldo Nonato P. de;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000200010
Abstract: the influence of phosphorus fertilization on yield of okra, cv. santa cruz was evaluated. the research was carried out in the experimental design of randomized blocks, with five treatments (0; 44; 88; 132 and 176 kg ha-1 of p), and four replications. the maximum number of fruits per plant (43) was obtained with the maximum level of 176 kg ha-1 of p. the estimated maximum yield of commercial fruits (38.6 t ha-1), was related to 139 kg ha-1 of p. the application of 137 kg ha-1 of p provided the highest economical income, yielding 38.3 t ha-1 of commercial fruits, with an increment of fruits of 17.4 t ha-1. the most economic level represented 98% of that responsible for the maximum yield, indicating that the okra responded economically to the use of p in sandy soil and, of the p level responsible for the maximum commercial yield of fruits were related to 40 mg dm-3 of available p in soil (mehlich 1), and the level responsible for the highest economic income was related to 38 mg dm-3.
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;Alves, Adriana U.;
Horticultura Brasileira , 2003, DOI: 10.1590/S0102-05362003000100016
Abstract: the cowpea-bean, known as macassar-bean or rope-bean is one of the main crops in the northeast region of brazil. it is consumed either as fresh or dried beans. cowpea is cultivated in almost all regions of the paraíba state, representing 75% of the cultivated area with cowpea-beans. the low yield is attributed to the lack of a research program about mineral fertilization. the effect of levels and forms of nitrogen applications on yield of pods and green and dry grains of cowpea-bean, cv. ipa 206 was evaluates. the experiment was performed at the universidade federal da paraíba, in areia, brazil, from april to august/2001, in a randomized blocks design. treatments were distributed in a factorial scheme 5 x 2, where the first factor corresponded to nitrogen levels (0; 25; 50; 75 and 100 kg ha-1) and, the second factor, the application forms (soil and foliar application), in four repetitions. each plot consisted of 20 plants, spaced 0.8 x 0.4 m apart. the estimated maximum pods yield (11 t ha-1), of green grains (9.3 t ha-1) and of dry grains (3.6 t ha-1) was obtained with 62, 61 and 56 kg ha-1 of nitrogen applied in the soil, respectively. with foliar applications the yield of pods (10 t ha-1), of green grains (8.4 t ha-1) and of dry grains (3.4 t ha-1) reached maximum values applying levels of 64, 63 and 59 kg ha-1 of nitrogen respectively.
Rendimento de palmito de pupunheira em fun??o da aplica??o de esterco bovino e aduba??o química
Nascimento, Jo?o T.;Oliveira, Ademar P. de;Souza, Adailson P. de;Silva, Ivandro de F. da;Alves, Adriana U.;
Horticultura Brasileira , 2005, DOI: 10.1590/S0102-05362005000100004
Abstract: the combination effect of cattle manure and mineral fertilization on palm heart yield in peach palm plants was evaluated. the experiment was conducted from april 2000 to may 2002 in quartz psamment at the universidade federal da paraíba, in areia, brazil. the experiment design was a randomized block with treatments arranged in a 4 x 2 factorial scheme with four cattle manure rates (0; 10; 20 and 30 t ha-1) in the presence or absence of npk fertilizer in four replications. each plot consisted of 20 plants spaced 2 x 1 m. estimates of maximum yield for first class (0.84 t ha-1) and second class (1.10 t ha-1) palm heart were obtained when using cattle manure at the rates of 15.4 and 14.0 t ha-1 in combination with mineral fertilization. in the absence of mineral fertilization the maximum yield of first class (0.76 t ha-1) and second class (1.0 t ha-1) palm heart was attained with cattle manure rates of 15.8 and 16.0 t ha-1. first class palm heart presented the maximum yield estimated at 1.94 t ha-1 with cattle manure applied at the rate of 15.0 t ha-1. in the absence of n-p-k fertilization the maximum yield of 1.85 t ha-1 was due to the application of 16.6 t ha-1 of cattle manure.
Desenvolvimento e estado nutricional da beterraba em fun??o da omis?o de nutrientes
Alves, Adriana U;Prado, Renato de M;Gondim, Ancélio Ricardo de O;Fonseca, Ivana M;Cecílio Filho, Arthur B;
Horticultura Brasileira , 2008, DOI: 10.1590/S0102-05362008000200033
Abstract: an experiment was conducted under greenhouse conditions, in jaboticabal, s?o paulo state, brazil, to evaluate the effects of macronutrient omission on beet nutritional status and development, as well as to describe nutritional deficiency symptoms. the experiment was arranged in completely randomized design with three replications and seven treatments, corresponding to complete nutritive solution (macro and micronutrients) and individual n, p, k, ca, mg and s omission. plant height, number of leaves, leaf area, shoot, root and whole plant dry mass and macronutrient levels were determined and nutritional deficiency symptoms were described. individual omissions of n, p, k or ca were the most limiting for beet growth, considerably reducing plant height, number of leaves, and shoot, root and whole plant dry mass. nutritional deficiency symptoms were observed for each element. shoot macronutrient levels in control and nutrient omission treatments were, respectively: n = 32.9 - 13.8; p = 9.0 - 0.8; k = 126.0 - 15.1; ca = 12.0 - 1.0; mg = 10.1 - 0.7; s = 3.6 - 1.2 g kg-1.
Produ??o de batata-doce adubada com esterco bovino em solo com baixo teor de matéria organica
Santos, Jo?o F dos;Oliveira, Ademar P de;Alves, Adriana U;Brito, Carlos H de;Dornelas, Carina SM;Nóbrega, José PR;
Horticultura Brasileira , 2006, DOI: 10.1590/S0102-05362006000100021
Abstract: the influence of organic fertilization on total and commercial production of sweet potato roots, rainha branca cv. was evaluated. the experiment was carried out from june to october/2004, in paraiba state, brazil. the experimental design was of randomized blocks with six treatments (0; 10; 20; 30; 40 and 50 t ha-1 of cattle manure), in four replications. the total and commercial productions of sweet potato roots were 18.5 and 14.2 t ha-1 obtained with 32 and 30 t ha-1 of cattle manure. the cattle manure level responsible for maximum economic return of commercial roots (30 t ha-1), was equal to that which allowed maximum production, represented 100% of maximum technique efficiency, constituting an indicative of the economic viability of cattle manure application in sweet potato. the estimated cattle manure levels which resulted maximum production and economic returns for commercial roots, corresponded to 13.8 g kg-1 of remaining organic matter with the extractor. in similar soils of this study, the organic fertilization for sweet potato production can be dispensed, with remaining organic matter level higher than 13.8 g kg-1 of soil.
Avalia??o de linhagens e cultivares de feij?o-caupi, em Areia, PB
Oliveira, Ademar P. de;Sobrinho, José Tavares;Nascimento, Jo?o T.;Alves, Adriana U.;Albuquerque, Ivanildo C. de;Bruno, Genildo B.;
Horticultura Brasileira , 2002, DOI: 10.1590/S0102-05362002000200012
Abstract: ten breeding lines and three cultivars of cowpea-bean were evaluated. the experiment was set up in areia, brazil, between april and july/00, in red-yellow latossoil. the breeding lines te-92-199-20f; te-90-170-29f; te-90-170-76f; cncx-405-17f; cncx-409-12f; te-90-180-10f; te-87-108-6g, linhagem avan?ada, and ipa 206, br-03 tracuateua, cvs., presented length and average weight of pods according to the commercial patterns and number of pods by plant according to the pattern of the species (above twenty pods). the yield of green pods, green and dry grains, obtained by the breeding lines te-90-170-76f; cncx-409-12f; cnc-405-17f; te-90-180-0f; te-87-108-6g, linhagem avan?ada and ipa 206, cultivar, were superior to 5.0 t/ha for green pods, to 3.0 t/ha for green grains and to 1.2 t/ha for dry grains, considered highest for the cowpea-beans. highest yield of green pods (6.5 and 6.5 t/ha), green grains (3.8 and 3.8 t/ha), and dry grains (1.8 and 1.8 t/ha) were obtained, respectively, with the breeding line cncx-409-12f and ipa 206 cv.
Determina??o simultanea de teobromina, teofilina e cafeína em chás por cromatografia líquida de alta eficiência
Alves, Adriana Barreto;Bragagnolo, Neura;
Revista Brasileira de Ciências Farmacêuticas , 2002, DOI: 10.1590/S1516-93322002000200013
Abstract: to carry out this study, 10 samples of different kinds and brands of teas were analyzed with the purpose of quantifying simultaneously theobromine, theophylline and caffeine. for this, high performance liquid chromatography (hplc) was used based on iso 10095 (1992). the conditions were: a reversed phase column (inertisil ods-3, 150x4 mm, 5 mm); acetic acid 1% + acetonitrile (95:5, v/v) as mobile phase; flow of 1 ml/min and uv-vis detector set at 273 nm. the results of caffeine obtained by this method were compared with those using a spectrophotometric method according to schormüller (1970). in the case of black tea, no difference was observed in the caffeine, by both methods. the samples of black tea had the highest amounts of theobromine and caffeine and no sample had a significant amount of theophylline.
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