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Search Results: 1 - 10 of 360144 matches for " Arnaldo Nonato P de; "
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Rendimento de maxixe adubado com doses de nitrogênio
Oliveira, Ademar P de;Oliveira, Arnaldo Nonato P de;Alves, Anarlete U;Alves, Edna U;Silva, Damiana F da;Santos, Rodolfo R;Leonardo, Francisco de Assis P;
Horticultura Brasileira , 2008, DOI: 10.1590/S0102-05362008000400022
Abstract: the effect of increasing nitrogen doses was evaluated on the gherkin yield, cv. nordestino. this study was carried out on the period from may to september 2006, at the universidade federal da paraíba, in areia, paraiba state, brazil, in an experimental design of randomized blocks with six treatments (0; 50; 100; 150, 200 and 250 kg ha-1 n) and four replications. twenty plants per plot were used, on a spacing of 2 x 1 m. fruit average mass, number and fruits production per plant, and yield of fruits were evaluated. fruits average mass reached the maximum value of 21 g using the dose of 155 kg ha-1 of n. the maximum number (21 fruits) and the maximum fruits production per plant of gherkins (469 g) were reached with 153 and 187 kg ha-1 of n, respectively. the dose of 188 kg ha-1 of n was responsible for the maximum yield of 12.7 t ha-1 of fruits. for the highest maximum economic efficiency the dose of 183 kg ha-1 of n was responsible for the yield of 12.7 t ha-1 of commercial fruits, meaning a development of 9.4 t ha-1 in the fruits productivity, relative to n absence.
Yield of gherkin in response to doses of bovine manure
Oliveira, Arnaldo Nonato P de;Oliveira, Ademar P de;Leonardo, Francisco de Assis P;Cruz, Iordam da S;Silva, Damiana F da;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000100020
Abstract: considering the importance of gherkin in northeastern brazil, studies focusing on increasing its quality and yield are powerful tools to improve people social and economical condition in this region. the effects of doses of bovine manure were evaluated in gherkin yield in an experiment using cultivar nordestino, from may to september 2006, at the federal university of paraíba, in areia county, paraíba state, brazil. the experimental design was randomized complete blocks, with five treatments (0; 10; 20; 30, and 40 t ha-1) of bovine manure, in four replications. the working area in each experimental plot corresponded to 80 m2, including 20 plants, with 2.0 x 2.0 m spaces. the highest number of fruits per plant (30) was achieved with 32.2 t ha-1 of bovine manure. both fruit production per plant and fruit yield increased with doses of bovine manure, with maximum values of respectively 1,306 g and 19.5 t ha-1, when 40 t ha-1 of bovine manure were used.
Parcelamento e fontes de nitrogênio para produ??o de maxixe
Oliveira, Ademar P de;Oliveira, Flávio José V de;Silva, Jandiê A da;Oliveira, Arnaldo Nonato P de;Santos, Rodolfo R;Silva, Damiana F da;
Horticultura Brasileira , 2010, DOI: 10.1590/S0102-05362010000200014
Abstract: the nitrogen sources and parceling were evaluated concerning to gherkin plant, nordestino cv., in the universidade federal da paraíba, brazil. the experimental design was the randomized block design in the factorial scheme 2 x 7, constituted of two nitrogen sources (urea and ammonium sulfate) and seven application times: a) (100% at sowing date; b) 100% 30 days after sowing (das); c) 100% 60 das; d) 50% at sowing date and 50% at 30 das; e) 50% at sowing date and 50% at 60 das; f) 50% at 30 and 50% at 60 dap; g) 33% at sowing date, 33% at 30 33% at 60 dap, with four replicates. the average weight of the fruits was inferior, 27 and 21 g, respectively, when the ammonium sulfate was 100% supplied at sowing and 100% at 60 das, as no alteration occurring in the urea source nor between those n sources. the yield of fruits of one plant (2.364 kg plant-1), the number of fruits of one plant (64 fruits plant-1) and fruit productivity (20.93 t ha-1) were significantly higher, when the nitrogen (ammonium sulfate source) was 50% parceled at 30 and 50% at 60 das. when urea was the nitrogen source, the yield of fruits of one plant (1.437 kg plant-1), the number of fruits of one plant (48 fruits plant-1) and the fruit productivity (12.66 t ha-1) were significantly higher, when it was parceled 50% at sowing date and 50% at 30 dae.
Produ??o do maxixeiro em fun??o de espa?amentos entre fileiras e entre plantas
Oliveira, Ademar P de;Silva, Jandiê A da;Oliveira, Arnaldo Nonato P de;Silva, Damiana F da;Santos, Rodolfo R;Silva, Natália V da;
Horticultura Brasileira , 2010, DOI: 10.1590/S0102-05362010000300017
Abstract: the yield of the gherkin cv. nordestino was evaluated with different spacings between rows and plants in a row in an essay which was carried out at the universidade federal da paraíba, brazil, from august/2007 to january/2008. the randomized block experimental design was used and the treatments were arranged in the factorial scheme 3 x 4 - three spacings between rows (1.0; 2.0; and 3.0 m) and four spacings between plants (0.5; 1.00; 1.5; and 2.0 m) - with four replicates. the experimental plot comprised four rows with ten plants in each one, totaling 40 plants, with one plant per hole. two central rows were considered as the useful area. the evaluated variables were the average mass of commercial fruits, the number and production of the commercial fruits plant-1 and the commercial productivity of fruits. setting 0.5 m between plants, all the characteristics under evaluation decreased as consequence of increasing spacings between rows. the highest values for average fruit mass (38 g), number of fruits (67 and 78) and productivity of fruits plant-1 (36 and 34 kg) were obtained at spacings of 2.0 and 3.0 m between rows and 1.0 m between plants, respectively. the highest productivities of commercial fruits (16 and 12.9 t ha-1) were obtained with 1.0 and 1.5 m between plants and 2.0 and 1.0 m between rows. on the other hand, the highest spacing between plants (2.0 m) reduced fruit productivity.
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.
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.
Produ??o de rizóforos comerciais de Inhame em fun??o de doses de nitrogênio
Oliveira, Ademar Pereira de;Barbosa, Luciano José das N;Pereira, Walter E;Silva, José Elenilson L da;Oliveira, Arnaldo Nonato P de;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000100014
Abstract: yam is a worldwide consumed vegetable and is considered an alternative crop that is in expansion. however, the average yield of this crop is low, probably due to the low availability of nutrients in the soil of cultivated areas. the present study evaluated the production of yam, da costa, cv., as a result of nitrogen fertilization. an experiment was carried out between march and december/2005 at universidade federal da paraíba, in areia, brazil. a randomized block design was used, with five levels (0; 50; 100; 150 and 200 kg ha-1), supplied in covering fertilization, with four replications. the estimated length of rhizophors was 32 cm reached using 70 kg ha-1 of n. the average mean diameter of 7.0 cm, was not affected by n levels. the mean weight of rhizophors increased up to 1.5 kg, when an estimated n level of 120 kg ha-1 was applied. the maximum yield of commercial rhizophors was 19.2 t ha-1, from an estimated n level of 120 kg ha-1, while the economical yield of commercial rhizophors was 13.9 t ha-1 obtained when n level of 118 kg-1 were used. the n contents in leaves of yam increased linearly with levels of n fertilization.
Características produtivas da batata-doce em fun??o de doses de P2O5, de espa?amentos e de sistemas de plantio
Oliveira, Ademar Pereira de;Silva, José Elenilson Luna da;Pereira, Walter Esfrain;Barbosa, Luciano José das Neves;Oliveira, Arnaldo Nonato P. de;
Ciência e Agrotecnologia , 2006, DOI: 10.1590/S1413-70542006000400003
Abstract: the influence of phosphate fertilization, spacing and planting systems were evaluated on the yield of sweet potato roots rainha branca cv. the experiment was carried out from february to july/2004 in quartz psamment soil, in the universidade federal of paraíba, areia-pb, brazil. it was used experimental design of randomized blocks in sub divided plots in four replications. in the main plots, twenty treatments were tested forming five levels of p2o5 (0, 100, 200, 300 and 400 kg ha-1), combined factorially with four spacing among plants (0.20, 0.30, 0.40 and 0.50 m) for 0.80 m among lines; and in subplots, two planting for ms (one and two stems/hole). the largest production of commercial/plant roots (662 g) was obtained in planting system with a stems/hill, in the spacing of 0.80 m x 0.50 m (25.000 plants ha-1) with 180 kg ha-1 of p2o5. the commercial roots productivity of sweet potato roots, considering p2o5 levels at planting system with one stems/hole, were 18.7 t ha-1 obtained with 210 kg ha-1 of p2o5. the productivity in the planting system using two stems/hole were 18.9 t ha-1, and it was reached with 231 kg ha-1 of p2o5. the largest productivity on spacing function (19.64 t ha-1) was obtained with 0.30 m among plants, in the planting system with two stems/holes (83.330 plants ha-1).
Yield and phenology of yam as affected by the physiological rest period of seed-rhizomes
Oliveira, Ademar P de;Moura, Márcio F de;Alves, Edna U;Alves, Anarlete U;Oliveira, Arnaldo Nonato P de;Leonardo, Francisco de Assis P;Cruz, Iordam da S;
Horticultura Brasileira , 2008, DOI: 10.1590/S0102-05362008000200005
Abstract: the objective of this work was to evaluate the effects of the rest period of seed-rhizomes in the phenology and yield of yam da costa (dioscorea cayennensis). the experiment was carried out in field conditions at the federal university of paraíba, in areia, brazil, from january to december 2004, in an ustpsamment soil. a completely randomized block design was used to test three treatments, 60-, 80-, and 100-day seed-rhizome rest periods, with seven replications. plant emergency was evaluated every ten days from 40 to 90 days after planting (dap), as well as plant height, evaluated up to 80 dap. the average mass of commercial rhizomes and the yield of commercial and seed-rhizomes were also assessed. at 40, 50, and 60 days after planting, plant emergency was superior for seed-rhizomes submitted to 100-day rest periods. at 70 and 80 dap, there were no significant differences. at 90 dap, seed-rhizomes that rested for 60 and 100 days provided around 91 and 83% of plant emergency, respectively. concerning plant height, seed-rhizomes that rested 100 days produced the tallest plants. the average mass of commercial rhizomes and the yield of commercial and seed-rhizomes were 1.22 kg, 13.1 t ha-1, and 7.7 t ha-1, respectively, for seed rhizomes submitted to 60-day rest periods. for 100-day rest period rhizomes, the average mass of commercial rhizomes and the yield of commercial and seed-rhizomes, were 0.73 kg, 7.7 t ha-1, and 1.7 t ha-1, respectively.
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.
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