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| Registros recuperados: 277 | |
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| Antonello,Leonardo Magalhães; Muniz,Marlove Fátima Brião; Brand,Simone Cristiane; Rodrigues,Johnathan; Menezes,Nilson Lemos de; Kulczynski,Stela Maris. |
| Objetivou-se com este trabalho avaliar a qualidade fisiológica de sementes de seis variedades de milho submetidas ao armazenamento em embalagens plásticas a vácuo e em sacos de pano. Para tanto, foram realizadas avaliações do teor de água, germinação, primeira contagem de germinação, emergência, índice de velocidade de emergência, comprimento de parte aérea e massa seca de plântulas. Utilizou-se o delineamento inteiramente casualizado, com os tratamentos arranjados em esquema 6x4x2 (variedades x tempos de armazenamento x embalagens). Durante os seis meses de armazenamento, o teor de água das sementes não ultrapassou os 13%. A germinação foi reduzida nas duas embalagens, sendo que na embalagem plástica, esta queda ocorreu devido à retirada do oxigênio de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Embalagens plásticas; Sacos de pano. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222009000400009 |
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| Santos,Paulo Marçal; Gondim,Tânia Cristina Oliveira; Araújo,Eduardo Fontes; Dias,Denise Cunha Fernandes Santos. |
| O presente trabalho objetivou avaliar a eficiência do teste de envelhecimento acelerado, utilizando-se diferentes períodos e temperaturas de exposição, na avaliação da qualidade fisiológica, de lotes de sementes de milho-doce. Os ensaios foram conduzidos no Laboratório de Sementes do Departamento de Fitotecnia da Universidade Federal de Viçosa - MG, no período de fevereiro a junho de 2000. Foram utilizadas sementes de milho da cultivar BR 400 (Super-Doce), de quatro lotes, obtidos a partir da secagem a 30, 40, 50 e 60ºC, num ambiente com umidade relativa de 60%. Inicialmente determinou-se o teor de água das sementes e, posteriormente, foi avaliada a sua qualidade fisiológica através dos testes de germinação, primeira contagem da germinação e de frio. Para... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Semente; Milho-doce; Envelhecimento acelerado. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222002000100013 |
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| Ferreira,Roberta Leopolda; Sá,Marco Eustáquio de. |
| O objetivo do trabalho foi verificar a qualidade fisiológica de sementes durante as após várias etapas do beneficiamento de dois híbridos de milho e a contribuição de cada equipamento na melhoria da qualidade das sementes. Foram coletadas amostras de sementes chatas de dois híbridos, peneira 22 L, na recepção e após as fases de secagem, pré-limpeza, limpeza, separação por espessura, mesa gravitacional e quando as sementes encontravam-se prontas para embalagem, totalizando sete etapas do beneficiamento mais uma testemunha (colheita e debulha manual). Realizou-se o teste de germinação, análise de pureza, primeira contagem, índice de velocidade de germinação, envelhecimento acelerado, teste de tretrazólio, teste de frio, comprimento de raiz primária e parte... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Vigor; Mesa gravitacional; Germinação. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222010000400011 |
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| Silva,Francisca Gleiciane da; Assis Junior,Raimundo Nonato de; Mesquita,Rosilene Oliveira; Marques,Edilaine da Silva; Mota,Jaedson Cláudio Anunciato. |
| ABSTRACT Based on the hypothesis that less than 10% aeration porosity is sufficient to ensure plant development, the objective of this study was to evaluate the effect of levels of aeration porosity and soil density on the gas exchange and growth of maize plants. The experiment was conducted in a greenhouse, in randomized blocks in a 2 × 5 factorial arrangement: two densities (1.6 and 1.7 Mg m-3) and five aeration porosities (0.07, 0.08, 0.09, 0.10 and 0.12 m3 m-3), with five replicates. The interaction between the factors did not have an effect on the analyzed variables. Aeration porosity had a significant effect on photosynthesis, stomatal conductance, relative chlorophyll index (SPAD), plant height and biomass production, whose data were fitted by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil aeration; Physical quality; Ecophysiology; Zea mays L.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300403 |
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| Junges,Emanuele; Toebe,Marcos; Santos,Ricardo Feliciano dos; Finger,Geísa; Muniz,Marlove Fátima Brião. |
| The aim of this study was to evaluate the effect on the physiological performance of maize seeds (Zea mays L.) of micro-priming with Bacillus subtilis associated with techniques of water restriction and seed-coating. The micro-priming of the seeds, without any additional techniques, was carried out using a commercial product, Rhizoliptus ® (Bacillus subtilis). Water restriction was carried out using a PDA medium (Potato - Dextrose - Agar) with mannitol (-0.7 MPa), upon which the culture was grown for 48hours. One hundred sterilized corn seeds were placed in each dish. Once root protrusion occurred in one seed, the rest were removed and kept in a laboratory environment for 48 hours. The coating was carried out by the addition of Seed Polymer Color HE (50 ml... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Polymer; Priming; Initial growth and development; Zea mays L.. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000300014 |
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| Galetto,Shivelly Los; Fonseca,Adriel Ferreira da; Harkatin,Silvano; Auler,André Carlos; Carvalho,Igor Quirrenbach de. |
| The objectives of this study were to assess the concentrations of available phosphorus (P) extracted using the Mehlich-1 (M1), ion exchange resin (IER) and modified Morgan (MM) methods after 36 months of experimentation with the application of phosphates in a crop-livestock integration system (CLIS). Moreover, this study aimed to assess which extraction method provides the best correlation of P concentrations with the maize crop attributes. The treatments consisted of applying annual doses of P2O5 on the soil surface of the total area during the sowing of winter forage crops in the form of triple superphosphate (TSP), rock phosphate (RP) or magnesium thermophosphate (MTP). After 36 months of experimentation, soil samples were collected from the 0-5, 5-10,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Mehlich-1; Ion exchange resin; Modified Morgan. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500011 |
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| Romualdo,Liliane Maria; Luz,Pedro Henrique de Cerqueira; Baesso,Murilo Mesquita; Devechio,Fernanda de Fatima da Silva; Bet,Jessica Angela. |
| ABSTRACT Image analysis can provide information extracted from the leaves of crops, and contribute to early identification of nutrient deficiency. The objective of this study was to recognize nutritional nitrogen (N) patterns in maize plants, at the V4 and V7 stages, using digital image analysis based on spectral indexes. The experiment was carried out in a greenhouse under hydroponic cultivation. Treatments consisted of a completely randomized design, in a 4 × 2 factorial arrangement, with four replications. The factors were constituted by the doses of N (0; 3.0; 6.0 e 15 mmol L-1) combined at V4 and V7. In each stage, digital images were taken of leaf blades, with subsequent chemical composition and image analysis. For image recognition and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Image analysis; Mineral nutrition; Image processing.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000200183 |
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| Lorenzetti,Eloisa; Tartaro,Juliano; Alves Neto,Alfredo José; Stangarlin,José Renato; Portz,Roberto Luis; Kuhn,Odair José. |
| ABSTRACT Due to the environmental impact generated using fungicides, new alternatives for disease control have been arising, such as the use of nutrients that may act on the development of certain pathogens or decrease the host susceptibility to diseases. The objective of this work was to verify if chelates of calcium, copper, manganese and zinc inhibit the germination of Puccinia sorghi, Cercospora sp. and Exserohilum turcicum spores. Two experiments were carried out: the first with agar-water culture medium, where the treatments and spores were placed at the same moment and the second using corn leaves as substrate, where treatments were administered zero, one, two, three, four and five hours after the spores are sprayed. Calcium, copper, manganese and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative control; Nutrients; Chelates; Zea mays L.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400405 |
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| Portugal,José Roberto; Arf,Orivaldo; Peres,Amanda Ribeiro; Gitti,Douglas de Castilho; Garcia,Nayara Fernanda Siviero. |
| RESUMO Técnicas sustentáveis de manejo na cultura do milho são necessárias, visando aumento de produtividade, minimizando custos e impactos ambientais. Objetivou-se com este trabalho avaliar diferentes coberturas vegetais (milheto, crotalária, guandu, milheto + crotalária, milheto + guandu e pousio), doses de N (0; 40; 80 e 120 kg ha-1) com e sem a inoculação de sementes com Azospirillum brasilense na cultura do milho, na região do Cerrado. O delineamento experimental foi o de blocos casualizados, em esquema fatorial 6x4x2, constituindo 48 tratamentos, com 4 repetições. O estudo foi realizado no município de Selvíria-MS. As coberturas vegetais, exceto o guandu no primeiro ano e pousio no segundo, produziram quantidade adequada de resíduo (6 t ha-1) para... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Adubação verde; Adubação nitrogenada; Inoculação.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400639 |
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| Morais,Tâmara Prado de; Brito,Césio Humberto de; Brandão,Afonso Maria; Rezende,Wender Santos. |
| ABSTRACT Several studies addressing the inoculation of cereals with diazotrophic microorganisms can be found in the literature. However, in many experiments, investigators have overlooked the feasibility of applying these microorganisms to the furrow together with the seed, and the effect of bacterial concentration on phytostimulation. The aim of this work was to evaluate the effect of doses of an inoculant based on Azospirillum brasilense, applied to the seed furrow when planting maize, combined with different doses of nitrogen fertiliser. The experiment was carried out in the field, in soil of the cerrado region of Brazil. An experimental design of randomised blocks in bands was adopted, comprising nitrogen (40, 100, 200 and 300 kg ha-1) and doses of an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diazotrophic bacteria; Nitrogen doses; Bacterial concentration; Zea mays L.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000200290 |
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| Cabral,Pablo Diego Silva; Amaral Júnior,Antonio Teixeira do; Freitas,Ismael Lourenço de Jesus; Ribeiro,Rodrigo Moreira; Silva,Thiago Rodrigues da Conceição. |
| RESUMO O conhecimento do sentido e do grau de associação entre duas ou mais características pode contribuir para aumentar a eficiência na seleção de genótipos superiores. Objetivou-se com esse trabalho avaliar as correlações fenotípicas, genotípicas e ambientais, bem como os efeitos diretos e indiretos da análise de trilha para a seleção mais apropriada, via capacidade de expansão e seus componentes primários e secundários, em híbridos dialélicos de milho-pipoca. Para tanto, 90 híbridos dialélicos e a testemunha (IAC 112) foram semeados em safra e safrinha em Campos dos Goytacazes - RJ, de acordo com o delineamento em blocos casualizados. As características avaliadas foram: ciclo (CO); altura da planta (AP); altura da espiga (AE); diâmetro do colmo (DC);... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Análise de trilha; Correlação; Híbridos dialélicos; Zea mays L.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000100108 |
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| Melo, Aurélio Vaz de; Taubinger, Markus; Santos, Valdere Martins dos; Cardoso, Dione Pereira; Nunes, Helber Veras. |
| Although corn silage be sufficiently known, the availability of these materials in the market is low, demonstrating that specific breeding programs in this area are scarce. Thus, the aim of this study was to determine the predominant type of gene action in controlling the characteristics and estimate general (GCA) and specific combining (CEC) among commercial corn hybrids aimed at producing corn. The eight hybrids and 56 hybrid combinations were evaluated in crop year 2011/2012, in the town of Gurupi, located in southern Tocantins. The experimental design used was 8 x 8 lattice with two replications and analyzed three characteristics of commercial interest for the production of corn for silage. The hybrid combinations responded differently to combinations... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adubação fosfatada; Análise dialélica; Zea mays L.. |
| Ano: 2017 |
URL: http://www.seer.ufv.br/seer/index.php/reveng/article/view/765 |
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| Zucareli, Claudemir; Oliveira, Mariana Alves de; Spolaor, Leandro Teodoski; Ferreira, André Sampaio. |
| The study aimed to evaluate the agronomic performance of maize genotypes sown in the second crop for the region of Londrina - PR. The experiment was conducted in the field at the Farm School, Universidade Estadual de Londrina-PR. We evaluated 13 genotypes of maize (2B710, 2B587, 2B688, 2C520, DAS8089, DAS9375, DAS8010, DAS8055, DAS9379, DAS9380, DAS9384, DKB390 and AG9010), seeded 09th of March 2007. The experimental design was a randomized complete block with four replications. We evaluated cycle, degree days, features fitometrics, broken and lodged plants, yield components and productivity. Data were subjected to analysis of variance and means were compared by Scott-Knott 5%. The genotypes showed higher than average productivity in the region. Therefore,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Componentes de produção; Características fitométricas; Cultivares.. |
| Ano: 2013 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/5593 |
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| Sarto, M. V.M.; Lana, M. C.; Rampim, L.; Rosset, J. S.; Dal Molin, P. V.. |
| Calcium silicate applied to the soil has an effect on plant nutrition since it is a source of silicon, calcium and magnesium. With the aim to evaluate the effect of doses of calcium silicate on soil chemical properties and on early development of corn, an experiment was conducted in a greenhouse, in pots containing eutroferric Oxisol, testing five rates of calcium silicate (0, 1.2; 2.4; 4.8 and 9.6 t ha-1) with four replications in a randomized complete block design. The levels of N, P, K, Ca and Mg in the plant shoot were evaluated, and, at the end of the experiment, shoot dry weight and plant height as well as Ca and Mg, and soil pH were also estimated. Shoot dry matter and plant height were not affected by fertilization with calcium silicate. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcário; Gesso; Zea mays L.; Silício. |
| Ano: 2013 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/7866 |
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| Silva, João Alfredo Neto da; Souza, Cristiano Márcio Alves de; Silva, Cesar José da; Fonseca, Paulo Rogério Beltramin da. |
| The aim of this study was to evaluate the performance of maize cultivars fitotécnico crop system in monocrop and intercropped with jatropha. The experiment was conducted in 2009/2010 harvest, at Fazenda Paraiso, located in the District of Itahum, City of Dourados, State of Mato Grosso do Sul in soil classified as Oxisol. The experimental design was a randomized block in factorial 3x2, three maize cultivars and two cropping systems (monocrop and intercropped), with four replications. The interaction between maize varieties and cropping system, the total dry mass and productivity for the three cultivars cropping system had the highest averages, indicating the great competition for factors of production offered by jatropha at this time of year. The BRS 1010... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jatropha curcas L.; Sistema de cultivo; Sombreamento; Zea mays L.. |
| Ano: 2015 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/8742 |
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| Rizzardi, Diego Ary; Faria, Cacilda Marcia Duarte Rios; Faria, Marcos Ventura; Mendes, Marcelo Cruz; Rossi, Evandrei Santos; Figueiredo, Alex Sandro Torre; Possato Junior, Omar. |
| Evaluate the behavior of commercial corn hybrids, with or without artificial inoculation of Stenocarpella. Maydis fungus was aimed by this work. Experiments were conducted along the harvesting periods of 2010/11 and 2011/12, in Guarapuava - PR. Treatments were evaluated in a factorial scheme 4x2, being four hybrids of corn (DKB245, DKB390Y, P30F53H and P30R50H) with and without artificial inoculation with fungus S. maydis. Delineation was in randomized full blocks in a factorial scheme. The following characteristics were evaluated, amount of rancid grains, weight of a thousand grains and yield of grains. Results evidenced hybrid DKB390Y with genotype more susceptible to fungus S. maydis independent of agricultural harvest and presence or not of artificial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rancind grains; White ear rot; Zea mays L.. |
| Ano: 2017 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14247 |
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| Piano, Jeferson tiago. |
| RESUMO: O objetivo do presente estudo foi avaliar o efeito da cama de aviário associada com adubação química nas propriedades físicas e químicas do solo, nos componentes de produção e na produtividade da cultura do milho (Zea mays L) em sistema de plantio direto. O delineamento experimental utilizado foi em blocos casualizados, com quatro repetições. Os tratamentos constituíram-se de cinco diferentes combinações de doses de adubo químico e orgânico na cultura do milho. A proporção de adubo em cada tratamento foi: 100% adubo químico; 75% de adubo químico e 25% de adubo orgânico; 25% de adubo químico e 75% de adubo orgânico; 50% de adubo químico e 50 % de adubo orgânico; 100% adubo orgânico. Utilizou-se como base para a adubação orgânica a dose de 15 t ha-1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Adubação orgânica; Densidade do solo.. |
| Ano: 2012 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/4508 |
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| Registros recuperados: 277 | |
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