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Search Results: 1 - 10 of 445155 matches for " Hamilton César de O;Dalpian "
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Identification of new Bremia lactucae races in lettuce in S?o Paulo state
Castoldi, Renata;Charlo, Hamilton César de O;Dalpian, Tagli;Melo, Danilo M;Botelho, Adelita P;Braz, Leila T;
Horticultura Brasileira , 2012, DOI: 10.1590/S0102-05362012000200005
Abstract: lettuce is the most consumed leafy vegetable in brazil. however, its production has faced increasing difficulties mainly due to the infestation of producing areas with bremia lactucae, the causing agent of downy mildew, the worst disease in lettuce. the aim of this study was to identify b. lactucae races occurring in lettuce producing areas of s?o paulo state, during 2008 and 2009. lettuce leaf samples containing b. lactucae sporangia were collected in the major lettuce producing areas of s?o paulo. each sample was considered an isolate. after the multiplication of sporangia in the susceptible cultivar solaris, with subsequent inoculation in the differentiating cultivars, the evaluations were performed on the same day of the first sporulation in the susceptible cultivar 'cobham green (dm 0)'. in 2008 one new b. lactucae code was identified. spbl:05 was the denomination proposed to it. in 2009 one another b. lactucae code was identified, that is, 63/63/02/00, whose denomination was proposed to be spbl:06.
Desempenho e qualidade de frutos de tomateiro em cultivo protegido com diferentes números de hastes
Charlo, Hamilton César de O;Souza, Samuel de C;Castoldi, Renata;Braz, Leila T;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000200004
Abstract: an experiment in a greenhouse was conducted to evaluate different orientations of growth of tomato plants, and the effect on productivity. the soil was prepared according to technical recommendations for the culture and soil analysis. plants were spaced 1.0 m between rows and 0.5 m between plants in the line. the experimental design was comprised of a complete randomized block design, with eight treatments and four repetitions, in factorial arrangement of 2x2x2. each plot consisted of seven plants, where only the central five plants of each plot were evaluated. two systems of conduction were used (leaving only one stem per plant and leaving two stems per plant); and two systems of pruning (conventional and differentiated); and two numbers of plants per hollow (one plant per hollow and two plants per hollow). in the conventional pruning all the lateral sprouts were removed and, in the differentiated pruning the lateral sprouts were left, and in these one raceme. we evaluated the number of raceme per plant, height of the first raceme, number of fruits per plant, diameter and length of fruits, thickness of pulp, weight of fruits, number of locules per fruit, diameter of locule, commercial and total yield estimated, ph, titratable acidity, soluble solids and vitamin c. the conduction of two plants per hollow, two stems per plant and conventional pruning type are recommended.
Desempenho de híbridos de couve-flor de ver?o em Jaboticabal
Monteiro, Beatriz Cristina B de Almeida;Charlo, Hamilton César de O;Braz, Leila T;
Horticultura Brasileira , 2010, DOI: 10.1590/S0102-05362010000100022
Abstract: the experiment was installed in field and aimed to compare the performance of eight hybrids of summer cauliflower. the statistical design was the randomized blocks with eight treatments and four replicates. the experimental plot measured 14 m2, with 28 plants of cauliflower spacing 1.0 m between rows and 0.5 m between plants. it was considered for evaluation 10 plants of the two central rows of each plot and the following hybrids of cauliflower: tpx00123, tpc00218, sarah af-1169, sharon, snow-flake, first-snow, veneza and verona. top-dressing was carried out with 10,5 kg of ammonium sulfate and 2,8 kg of potassium chloride, applied at 15, 30, 45 and 60 days after the seedlings transplantation. the cauliflowers were harvested at the ideal moment, with compact heads and united flower buds. the hybrids tpc00218 and tpx00123 were promising, with commercial productivity of 23.8 and 23.2 t ha-1, respectively. the hybrid first-snow presented low plant development and good productivity, so it can be cultivated with smaller spacing among plants. the hybrid snow-flake presented the lowest productivity, so it is not recommended for the region of jaboticabal. all tested hybrids had its production classified as "extra"and class 8 (greater than 230 mm).
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.
Desempenho agron?mico de dez linhagens de soja-hortali?a
Charlo, Hamilton César de O;Pessoa, Roseli;Funichello, Marina;Castoldi, Renata;Braz, Leila T;
Horticultura Brasileira , 2011, DOI: 10.1590/S0102-05362011000300015
Abstract: the objective was to evaluate the performance of ten vegetable soybean strains, in field. the experiment was arranged in randomized blocks with ten treatments (strain) and five replications. plots comprised four rows measuring five meters in length. sprinkle irrigation was used. the following strains were used: jlm003; jlm004; jlm010; jlm018; jlm019; jlm024; jlm030; br36; br155 and brs216. the average earliness, insertion height of first pod, number of pods without grain, number of pods with one grain, number of pods with two grains, number of pods with three grains, fresh weight of pods with one, two and three grains, fresh weight of 100 seeds from pods with one, two and three grains, weight of no marketable pods and marketable production of pods per plant were evaluated. results showed that the strain jlm010 is the best for vegetable soybean production, with total yield of immature grains of 12.53 t ha-1 and higher fresh weight of 100 seeds.
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.
Desempenho de genótipos de soja-hortali?a de ciclo precoce [Glycine max (L.) Merril] em diferentes densidades
Charlo, Hamilton César de O.;Castoldi, Renata;Vargas, Pablo Forlan;Braz, Leila Trevizan;Mendon?a, José Lindorico de;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000200044
Abstract: with the aim of evaluating the performance of two genotypes of early-cycle soybeans [glycine max (l.) merril] in different spacings, a study was carried out in the experimental area of the sector of vegetable crops and aromatic medicinal plants, belonging to the department of crop sciences, college of agricultural and veterinary sciences (fcav-unesp), jaboticabal campus-sp. the experimental design used was the one of subdivided parcels, each parcel representing the genotypes and the subparcels being the densities, where four replications were used for each treatment. plots comprised four rows measuring with populations of 20, 10 and 7 plants by meter, and 0.60m between rows, where each parcel consisted of 20 plants. seeds were sowed in expanded polystyrene trays with 128 pyramidal cells, contend substratum plantmax hortali?as?. transplanting was performed ten days after sowing, to a soil previously fertilized as recommended to the crop. harvesting was performed when pods reached the reproductive stage r6. the following genotypes were used: jlm010 and cnpsoi. the mean earliness, mean number of pods per plant, mean number of seeds per pod, fresh weight of 100 seeds and estimated yield of immature grains were measured. results showed that the genotype jlm010 is the best for vegetable soybean production, because a higher fresh weight of 100 seeds was obtained with a population of 7 plants by meter.
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