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Search Results: 1 - 10 of 253072 matches for " Pablo F;T Braz "
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Desempenho de cultivares de mel?o rendilhado em fun??o do sistema de cultivo
Vargas, Pablo F;Castoldi, Renata;Charlo, Hamilton César de O;Braz, Leila T;
Horticultura Brasileira , 2008, DOI: 10.1590/S0102-05362008000200014
Abstract: in this study the productive characteristics of five net melon cultivars, using two different cultivation systems were evaluated. the study was conducted in a greenhouse from november/05 to february/06. the experiments were carried out using randomized complete block design with a 5 x 2 factorial scheme and four repetitions. the evaluated factors were five net melon hybrids (maxim, b?nus 2, shinju 200, fantasy and louis) and two cultivation systems (in the soil and in substrate of coconut husk fiber). after harvest we evaluated the production per plant (kg planta-1); transverse (dtf) and longitudinal diameters (dlf) of fruit, in mm; format index of fruit (iff); transverse (dtl) and longitudinal diameters (dll) of locule, in mm; format index of locule (ifl); insertion diameters of the grain stalk (dip), in mm; and mesocarp thickness (em), in mm. no interactions were observed among the studied factors. the cultivation in substrate provided better performance when compared to cultivation in soil (2.51 and 1.52 kg planta-1, respectively), where the cultivar fantasy (2.44 kg plant-1) presented the best performance among cultivars, but not differing from louis and maxim. for the characteristics dip, dtl and em, a better performance was observed in plants cultivated in substratum. for the characteristics dtf, dlf, iff and dll no interactions were observed among the cultivation systems. therefore, the cultivation in substrate stood out in relation to cultivation in the soil, the cv. fantasy showing better performance than shinju 200 and bonus 2.
Crescimento, acúmulo de nutrientes e produtividade da cultura da couve-flor
Castoldi, Renata;Charlo, Hamilton César de O;Vargas, Pablo F;T Braz, Leila;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000400007
Abstract: the cauliflower is one of the main vegetables grown in brazil. the study of growth and nutrients accumulation by cauliflower could be useful for its fertilization. therefore, a research was conducted in the field to determine the nutrients accumulation by 'verona' cauliflower, from february 23 to june 5, 2006. the experiment consisted initially of 480 plants divided into three blocks. for each period two plants per block were collected. five samples of the vegetative part were collected each 14 days after transplantation and three samples of inflorescences were collected every four days after the beginning of the cauliflower formation. also, plant growth and nutrient accumulation in the inflorescences, stem, leaves and petioles were evaluated. plants showed linear increase of growth and accumulation of dry matter. the greatest accumulation period occurred from the beginning of the inflorescence formation up to the harvest. the decreasing order of accumulated nutrients was: n>k>ca>s>mg>p>fe>mn>zn>b>cu. the export of nutrients (g per plant of macronutrients and mg per plant of micronutrients) by inflorescences was 3.50 of n; 0.296 of k; 0.06 of ca; 0.290 of s; 0.032 of mg; 0.249 of p; 2.08 of fe; 0.375 of mn; 1.01 of zn; 1.45 of b and 0.07 of cu.
Cultivo de mel?o rendilhado com dois e três frutos por planta
Charlo, Hamilton César de O;Castoldi, Renata;Vargas, Pablo F;Braz, Leila T;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000200023
Abstract: the pruning of fruits of net melon cultivars was evaluated in this study. the cultivars maxim, louis, fantasy, shinju 200 and b?nus no2 were evaluated in plants bearing two and three fruits. the experimental design was of randomized blocks in factorial scheme 5 x 2, with four replications and the plants arranged in the spacing of 1.0 m between lines and 0.5 m between plants. the experiment was conducted in greenhouse, using fertirrigation and plastic pots of 13 l, filled with coconut fiber golden mix? misto 98. the seedlings were grown in expanded polystyrene trays of 128 cells and transplanted to pots when the first definitive leaf was completely developed. we evaluated the roughness of the rind, the longitudinal and transversal diameters of fruits, the fruit shape index, the longitudinal and transversal diameters of the locule, the locule shape index, the thickness of the mesocarp, the average weight of fruits and the production per plant. no interaction between the studied factors was detected. for the conditions of this experiment, the conduction of two fruits per plant generated greater transverse diameter of fruit, greater longitudinal diameter of the locule, greater roundness of the rind and greater average weight of fruits. however, the greatest productions per plant was observed in plants bearing three fruits. the hybrids fantasy and shinju 200 presented the best fruit characteristics and greater production.
Cultivo de híbridos de piment?o amarelo em fibra da casca de coco
Charlo, Hamilton César de O;Castoldi, Renata;Fernandes, Carolina;Vargas, Pablo F;Braz, Leila T;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000200006
Abstract: the yield of five yellow sweet pepper hybrids was evaluated in protected cultivation, using coconut fiber and fertirrigation. the experiment was arranged in a randomized blocks design, with five cultivars (zarco, clx 1463, línea, matador and eppo) and four replications, therefore each plot comprised eleven plants. plants were grown in open system, in plastic pots of 13 l, transplanting one seedling pot, which was produced in polystyrene trays. the spacing utilized was single row spacing of 0.8 m, double rows of 1.10 m and plant spacing of 0.5 m. the plants were trained individually in "v" shape with four main stems. fruits were harvested at ideal size, with at least 70% of the skin yellow colored. there were studied: fruit mean length and diameter, the ratio length/diameter, pulp thickness, total soluble solids content, ph, number of fruits per plant, total weight of fruits per plant, mean fruit weight, total and commercial yield and fruit classification. the hybrid clxp 1463 yielded fruits of greater length and diameter. this hybrid produced lower number of fruit per plant, but with greater mass. for the characteristics of pulp thickness, total soluble solids and ph there was not significant difference between hybrids. the hybrids clxp 1463, eppo and matador showed themselves to be promising, with commercial yields of 107.61, 102.62 and 95.31 t ha-1, respectively. the whole production of the hybrids clxp 1463, eppo, línea and matador was classified as extra.
Agronomic characteristics, isoflavone content and Kunitz trypsin inhibitor of vegetable soybean genotypes
Castoldi, Renata;Charlo, Hamilton César de O;Vargas, Pablo F;Braz, Leila T;Carr?o-Panizzi, Mercedes C;
Horticultura Brasileira , 2011, DOI: 10.1590/S0102-05362011000200015
Abstract: five vegetable soybean genotypes were evaluated for agronomic characteristics, functional and antinutritional properties. the experiments were conducted in the field, in the school of agricultural and veterinary sciences, in jaboticabal, s?o paulo state, brazil. the experimental design was a randomized block design with five treatments (genotypes) and four replications. the genotypes jlm003, jlm004, jlm010, jlm024 and jlm030 were evaluated in the following characteristics: number of pods per plant, number of seeds per pod, fresh weight of pods per plant (g), fresh weight of 100 seeds (g), estimated total yield of immature seeds (kg ha-1), moisture content, proteins, lipids, ash, carbohydrates, isoflavones and kunitz trypsin inhibitor. in the assessment of the major agronomic traits, in the conditions of this study, the genotype jlm010 was the most recommended for the region of jaboticabal. this genotype showed better agronomic characteristics of production as a vegetable, producing 136.04 g of fresh weight of pods per plant, 92.52 g of fresh weight/100 seeds and 11.12 t/ha of total immature seeds, and better functional properties.
Accumulation of nutrients in sweet peppers cultivated in coconut fiber
Charlo, Hamilton César de O;Oliveira, Sueyde F de;Vargas, Pablo F;Castoldi, Renata;Barbosa, José Carlos;Braz, Leila T;
Horticultura Brasileira , 2012, DOI: 10.1590/S0102-05362012000100021
Abstract: the production of sweet peppers in greenhouse has been severely affected by soil pathogens. with this, producers are adopting new cultivation techniques, such as cultivation in substrates, but information about this type of cultivation are still scarce. the aim of the present work was to evaluate nutrient accumulation in sweet peppers cultivated in coconut fiber with fertirrigation in greenhouse. initially, 160 plants (eppo cultivar) were divided into four blocks, where two plants per block were analyzed every 21 days after transplanting. the sweet peppers were cultivated in plastic pots of 13 l, containing coconut fiber, and placed in double rows with spacing of 0.5 x 0.8 m between single rows and 1.10 m between double rows. the commercial production of the mature fruits was estimated to be 97.3 t ha -1, where all the production was classified as extra (maximum quality). the accumulation of the various determined nutrients were: 8.22 g plant -1 of n, 1.14 g plant -1 of p, 7.84 g plant -1 of k, 3.25 g plant -1 of ca, 1.34 g plant -1 of mg, 2.24 g plant -1 of s, 16.65 mg plant -1 of b, 3.36 mg plant -1 of cu, 45.98 mg plant -1 of fe, 34.78 mg plant -1 of mn and 22.28 mg plant -1 of zn.
Growth analysis of sweet pepper cultivated in coconut fiber in a greenhouse
Charlo, Hamilton César de O;Oliveira, Sueyde F de;Castoldi, Renata;Vargas, Pablo F;Braz, Leila T;Barbosa, José Carlos;
Horticultura Brasileira , 2011, DOI: 10.1590/S0102-05362011000300010
Abstract: knowledge about the growth of crops allows the planning of rational cultivation methods which contribute to achieve greater potential of plant species, besides supplying information for the construction of descriptive mathematical models of growth. the growth curve of sweet pepper (eppo hybrid), cultivated in coconut fiber in a greenhouse with fertirrigation, was determined. the experiment consisted initially of 160 plants divided into four blocks. two plants were analyzed per block every 21 days after transplanting, ending at 189 days after transplant. the cultivation was carried out in plastics pots of 13 l containing coconut fiber, which were arranged in double rows, spaced 0.5 x 0.8 m between simple rows and 1.1 m between double rows. in each harvest the plant growth, production and quality of mature fruits were evaluated. the dry mass of the shoot increased with time, following the experimental model exponential of first order, reaching a maximum of 451.5 g/plant, 189 days after transplanting (dat). the production of dry mass of leaves, stem, root and fruit also increased over time reaching maximum values of 68.7, 65.8, 11.5 and 302.9 g/plant, respectively, at 189 dat. the same occurred with the leaf area per plant, plant height and the absolute rate of growth, whose maximum values were 6.183,5 cm2, 136.9 cm and 4.4 g/plant/day, respectively. the growth of the plant was continuous throughout the cycle, and the highest amount of dry mass was accumulated in fruits, reaching a marketable production of 97.3 t ha-1. all fruits were classified as extra.
Desempenho de quatro genótipos de soja-hortali?a em dois anos agrícolas
Castoldi, Renata;Charlo, Hamilton César de O;Vargas, Pablo F;Braz, Leila T;Mendon?a, José Lindorico de;Carr?o-Panizzi, Mercedes C;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000200024
Abstract: the performance of vegetable soybean genotypes was evaluated in two years, in the experimental area of universidade estadual de s?o paulo, s?o paulo state, brazil. the experimental design was of randomized blocks, with four genotypes and five replications per each year. plots comprised of four rows, with three meters in length and the plants were arranged with a plant spacing of 0.10m and 0.60m between rows, where 20 plants per plot were studied. seeds were sown in expanded polystyrene trays with 128 pyramidal cells, with the substrate plantmax hortali?as?. transplanting was performed ten days after sowing, in a soil previously fertilized as recommended for the crop. harvesting was performed when pods reached the reproductive stage r6. the genotypes jlm003; jlm010; jlm018 and cnpsoi were evaluated to measure the insertion height of first pod, mean number of pods per plant, mean number of seeds per pod, production of pods per plant, fresh weight of 100 grains and total yield of immature grains. genotypes jlm003, jlm010 and cnpsoi were the most productive and sowing date in december showed greater yield than sowing in september.
Resolvent estimates for 2-dimensional perturbations of plane Couette flow
Pablo Braz e Silva
Electronic Journal of Differential Equations , 2002,
Abstract: We present results concerning resolvent estimates for the linear operator associated with the system of differential equations governing 2 dimensional perturbations of plane Couette flow. We prove estimates on the $L_2$ norm of the resolvent of this operator showing this norm to be proportional to the Reynolds number $R$ for a region of the unstable half plane. For the remaining region, we show that the problem can be reduced to estimating the solution of a homogeneous ordinary differential equation with non-homogeneous boundary conditions. Numerical approximations indicate that the norm of the resolvent is proportional to $R$ in the whole region of interest. Submitted September 24, 2002. Published October 27, 2002. Math Subject Classifications: 76E05, 47A10. Key Words: Couette flow; resolvent estimates.
Resolvent estimates for 2 dimensional perturbations of plane Couette Flow
Pablo Braz e Silva
Mathematics , 2002,
Abstract: We present results concerning resolvent estimates for the linear operator associated with the system of differential equations governing perturbations of the Couette flow. We prove estimates on the L_2 norm of the resolvent of this operator showing this norm to be proportional to the Reynolds number R for a region of the unstable half plane. For the remaining region, we show that the problem can be reduced to estimating the solution of a homogeneous ordinary differential equation with non-homogeneous boundary conditions. Numerical approximations indicate that the norm of the resolvent is proportional to R in the whole region of interest.
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