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Search Results: 1 - 10 of 15295 matches for " Fornasieri Filho Domingos "
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Aduba??o nitrogenada na cultura do milho safrinha
Casagrande, Jo?o Reinaldo Ribas;Fornasieri Filho, Domingos;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002000100005
Abstract: experimental researches conducted with corn (zea mays l.) on normal season in clay soils of tropical regions suggest that losses of the soil n forms are not significant by lixiviation, because the nh4+ form on the tropical soils is more stable than it was supposed. in addition it was physiologically determined that the n absorption is more intensive in the earlier stages of the plants. to evaluate the proposal of the n fertilization effect on corn cultivated on off-season crop, the sowing of two corn hybrids with genetic differences (single, c333b and double, c444) was done on february 3rd, 1999, on clay soil at fcavj-unesp. four rates of n (0, 30, 60 and 90 kg/ha), as urea, were applied at two times: sowing and after emergency when the plants were with five to six leaves. the harvest was done on july 7th, 1999, with the evaluation of agronomic characteristics and nutrient content on leaves. there was no effect on rate increase or the timing of application of the n fertilizer, for the agronomic characteristics like grain yield, one thousand grain mass, harvest index, ear and plant height, number of total grains and number of grain rows per ear. the foliar content of n, p, k, ca, mg, s and zn were not influenced by the treatments because the values remained in the adequate rate scale.
Aduba o nitrogenada na cultura do milho safrinha
Casagrande Jo?o Reinaldo Ribas,Fornasieri Filho Domingos
Pesquisa Agropecuária Brasileira , 2002,
Abstract: Pesquisas com a cultura do milho (Zea mays L.) plantado em época normal, em solos argilosos de regi es tropicais, sugerem que as perdas de N do solo pela lixivia o n o s o significativas. A persistência da forma amoniacal nos solos tropicais tem sido maior que se supunha e, fisiologicamente, foi demonstrado que a absor o de N é mais intensa nos estádios iniciais das plantas. Com o objetivo de avaliar os efeitos do manejo do fertilizante nitrogenado na cultura do milho plantado na época denominada safrinha, foram plantados, em 3 de fevereiro de 1999, em um Latossolo Vermelho-Escuro, textura argilosa, em Jaboticabal, SP, dois híbridos de milho (o simples, C333B e o duplo, C444). Foram aplicados 0, 30, 60 e 90 kg/ha de N (uréia), em duas épocas: no plantio e após a emergência, quando as plantas atingiram cinco a seis folhas. A colheita foi efetuada em 7 de julho de 1999, quando foram avaliadas as características agron micas e o teor de nutrientes nas folhas. Em rela o à época extemporanea, n o houve efeito das doses nem da forma de aplica o do N, nas características de rendimento de gr os, massa de mil gr os, índice de colheita, altura das plantas e espigas, número de fileiras de gr os por espiga e número de gr os. Os teores de N, P, K, Ca, Mg, S e Zn, determinados nas folhas do milho, n o foram influenciados pelos tratamentos, pois os valores permaneceram dentro das faixas de teores tidos como adequados.
Qualidade industrial de cultivares de trigo e triticale submetidos à aduba??o nitrogenada no sistema de plantio direto
Cazetta, Disnei Amélio;Fornasieri Filho, Domingos;Arf, Orivaldo;Germani, Rogério;
Bragantia , 2008, DOI: 10.1590/S0006-87052008000300024
Abstract: the work was developed in season cropping 2004 and 2005 in selvíria county (ms), brazil, with aim of evaluate the effect of different rates of nitrogen (n) in side dress on the industrial characteristics of the cultivars of wheat and triticale in no-till system. the completely randomize design was used with split plots with 30 treatments, consisting of the six combination of cultivars in plots, being five cultivars of wheat (iac 364, iac 370, embrapa 22, brs 210 and brs 207) and one of triticale (iac 3), and five rates of n in side dress (0, 30, 60, 90 and 120 kg ha-1) in subplots, with four replicatons. in function of the results gotten, the hectoliter weight of triticale was inferior to the ones of the wheat, with the nitrogen fertilization providing reduction in this component; the falling number is adjusted, not being affected for the nitrogen fertilization; relation p/l of the flour of general form is raised, harming the commercial flour acceptance for bread-making; the nitrogen fertilization in covering develops the gluten strength (w) as well as the protein content of the flour and reduces relation p/l positively, influencing in the quality of the flour for bread-making; the flour of triticale is not adjusted for end of bread-making for its reduced gluten strength.
Efeitos de geada no desenvolvimento do feijoeiro em sucess?o a espécies vegetais e aduba??o nitrogenada
Farinelli, Rogério;Fornasieri Filho, Domingos;Bordin, Luciano;Penariol, Fernando Guido;Volpe, Clóvis Alberto;
Bragantia , 2010, DOI: 10.1590/S0006-87052010000100031
Abstract: the objective this work was verify the effect of frost in development of common bean in experimentation succession cover crops and nitrogen fertilization. the experimental design used was the randomized blocks in split-plot design, with four replications. the plots were represented by species sorghum bicolor guinea type, canavalia brasiliensis, sorghum bicolor, crotalaria juncea, pennisetum glaucum and witness maintained "clean"; the sub parcels by doses of nitrogen applied in topdressing (0, 25, 50, and 75 kg ha-1 of n), being used urea as source of n. less damages and severity of the frost were observed in bean plants grown after the species canavalia brasiliensis and crotalaria juncea, due to the least amount of residual dry mass in relation to the grasses crop. higher yields of common bean after the frost were obtained with crotalaria juncea and canavalia brasiliensis and with application of doses between 44.5 and 52.0 kg ha-1 of n in topdressing
Forma??o e manuten??o de palhada de gramíneas concomitante à influência da aduba??o nitrogenada em cobertura no feijoeiro irrigado em sistema de semeadura direta
Fiorentin, Ciro Franco;Lemos, Leandro Borges;Jardim, Celso Antonio;Fornasieri Filho, Domingos;
Bragantia , 2011, DOI: 10.1590/S0006-87052011000400026
Abstract: the definition of the nitrogen topdressing rates in common bean irrigated in succession to grain and cover crops on no-tillage system is critical to increase the yield, nutritional and technological quality of the final product. the aim of this study was to verify the formation and maintenance feasibility of cover mulch to tropical climate region and the nitrogen topdressing influence (0, 40, 80, 120 and 160 kg ha-1 of nitrogen) on irrigated common beans (winter-spring), in succession to crop mulch formed in the first year of no-tillage system implementation. the experimental design was in split plot, with three replications in randomized blocks. the main plots were represented by three systems of straw production (corn, corn intercropped with brachiaria ruziziensis, and b. ruziziensis) and the subplots for nitrogen topdressing rates. the b. ruziziensis mulch provided major quantity and maintenance of the ground cover and increased yield components and grain yield. the nitrogen topdressing application in common beans plants cultivated in succession to b. ruziziensis, corn intercropped with b. ruziziensis and corn does not increase grain yield in the first year of no-tillage system implementation.
Desempenho Agron?mico de cultivares de milho nos períodos de safra e safrinha
Farinelli, Rogério;Penariol, Fernando Guido;Bordin, Luciano;Coicev, Luciana;Fornasieri Filho, Domingos;
Bragantia , 2003, DOI: 10.1590/S0006-87052003000200008
Abstract: the experiment had the objective of evaluating agronomic performance of commercial maize cultivars, recommended for the northern part of the s?o paulo state, in regular and late growing season. the experiments were carried out in the fcav/unesp, jaboticabal campus, s?o paulo state, brazil, the first experiment being conducted in off season in 2000 and the regular second in the regular season of 2000/2001. fifteen commercial cultivars were sown in both experiments using a randomized-blocks design with three replications. the plots had 4 lines measuring 5 meters each. the results showed that environmental conditions reduced yield in off-season, the cultivars dkb 440 and dkb 350 being the most productive. the greatest yields were obtained in regular season, with dina 657 and ag 9090 cultivars.
Sucess?o de cultivo de feij?o-arroz com doses de aduba??o nitrogenada após aduba??o verde, em semeadura direta
Bordin, Luciano;Farinelli, Rogério;Penariol, Fernando Guido;Fornasieri Filho, Domingos;
Bragantia , 2003, DOI: 10.1590/S0006-87052003000300008
Abstract: a field trial was set up aiming to evaluate the effects of green cover and nitrogen fertilization on the sequential crops: common bean during the winter and upland rice during the summer. the experiment was arranged in split-plot experimental design with four replications. the main plots were green cover species (canavalia brasiliensis, crotalaria juncea cv. iac-kr1, pennisetum glaucum cv. bn-2, sorghum bicolor cv. ag-2501c and sorghum bicolor guinea), and a control plot kept weed free. these plants were sowed in march and mowed in may. the sub-plot were nitrogen rates as cover fertilization (0, 25, 50 and 75 kg.ha-1 of n). common bean production was evaluated in winter season, and the best productions were observed in the plots with leguminous plants as green cover under 50 and 75 kg.ha-1 of n. the rice grain production increased in the plot with crotalaria juncea and canavalia brasiliensis under 50 and 75 kg.ha-1 of n. among the grass plants, pennisetum glaucum was the green cover that promoted the best production for both sequential crops. the rice grain production decreased in the plot with sorghum bicolor cv. ag-2501c and sorghum bicolor guinea.
Desempenho de híbridos de milho submetidos a diferentes espa?amentos e densidades populacionais
Demétrio, Claudia Sousa;Fornasieri Filho, Domingos;Cazetta, Jairo Osvaldo;Cazetta, Disnei Amélio;
Pesquisa Agropecuária Brasileira , 2008, DOI: 10.1590/S0100-204X2008001200008
Abstract: the objective of this work was to evaluate the influence of row spacing and population densities on yield and yield components of two maize (zea mays) hybrids. the experiment was carried out in the agricultural year 2006/2007, in a typical haplustox, in a clay texture soil, in jaboticabal, sp, brazil. the experimental design was a randomized complete block, with split-split plot with 24 treatments. the main plots were three row spacings (0.40, 0.60 and 0.80 m), the split-plots were two hybrids, and the split-split plots were four population densities (30,000, 50,000, 70,000 and 90,000 plants per hectare). the following variables were evaluated: plant height, first ear height, stem diameter, number of grains (kernels) per ear, mass of 1,000 grains, grain yield and harvest index. maize grain yield increased with the reduction of row spacing for the evaluated hybrids. the increase of maize populational density resulted in increases of plant and first ear heights and in decrease of the number of grains per ear. the best planting arrangement for both hybrids was 0.40 m row spacing and 75,000 and 80,000 plants per hectare.
Suscetibilidade de genótipos de feij?o ao vírus-do-mosaico-dourado
Lemos, Leandro Borges;Fornasieri Filho, Domingos;Silva, Tiago Roque Benetoli da;Soratto, Rogério Peres;
Pesquisa Agropecuária Brasileira , 2003, DOI: 10.1590/S0100-204X2003000500004
Abstract: the objective of this work was to evaluate the susceptibility of common bean genotypes in relation to the golden mosaic virus, transmitted by the whitefly (bemisia tabaci). the genotypes were cultivated in dry and water growing seasons, with and without application of the granulated systemic aldicarb insecticide (3.0 kg ha-1 of a.i.). the experimental design was a randomized blocks in a 14x2 factorial scheme, represented by the genotypes and insecticide application, respectively, with four replications. the highest whitefly infestation and golden mosaic virus incidence occurred on dry growing season, and caused reduction on bean yield. the genotypes presented different degrees of susceptibility to the mosaic virus and to the vector insect. the most tolerant genotypes were iapar 57, iapar 65, iapar 72, ?nix, aporé and 606 (5)(214-17). insecticide application controlled the vector insect in both growing seasons, and provided yield increment.
Aduba??o nitrogenada em cultivares de arroz de terras altas
Boldieri, Flávio Minto;Cazetta, Disnei Amélio;Fornasieri Filho, Domingos;
Revista Ceres , 2010, DOI: 10.1590/S0034-737X2010000300020
Abstract: this work was developed during the agricultural years 2003/04 and 2004/05, in the experimental area of the s?o paulo state university (unesp - fcav), in jaboticabal (sp). the objective of this work was to evaluate the influence of different n rates in side dressing (0, 30, 60, 90 and 120 kg ha-1) on agronomic characteristics of different cultivars of upland rice (caiapó, primavera, confian?a, iac 202 and carisma), with sprinkler-irrigation. the cultivars caiapó, iac 202 and carisma showed the highest yields, while primavera did not respond to the increase in nitrogen fertilization; iac 202 and carisma had the highest harvest rates and were responsive to side-dressed nitrogen application and can be indicated for more advanced production systems; cultivatr caiapó was shown to be more efficient in absorbing and using the n in the soil and can be indicated for production systems with lower technology input.
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