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| Registros recuperados: 58 | |
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| Fialho, Cíntia Maria Teixeira; Silva, Gustavo Soares da; Faustino, Laís Araújo; Carvalho, Felipe Paolinelli de; Costa, Mauricio Dutra; Silva, Antonio Alberto da. |
| The purpose of this study was to evaluate the effects of mycorrhizal association on the interference of Bidens pilosa, Urochloa decumbens and Eleusine indica on soybean culture in two conditions: a) plants competing without contact with roots of another species; b) with contact between roots. At 60 days after planting, growth, nutrient accumulation and mycorrhizal colonization of soybean and weeds were evaluated. The contact between roots of soybean plant and weed species increased the negative interference effects for both species, with less growth and nutrient accumulation. With the individualization of roots, higher competition occurred for soil resources up to 60 days of coexistence between species. In competition with soybean, Bidens pilosa and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitotecnia; Microbiologia agrícola; Matologia Bidens pilosa; Urochloa decumbens (Syn. Urochloa decumbens); Eleusine indica; Arbuscular mycorrhiza fungi Matologia. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/27230 |
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| Santos, Weverton Ferreira; Procópio, Sérgio de Oliveira; Silva, Alessandro Guerra da; Fernandes, Marcelo Ferreira; Santos, Eduardo Ribeiro dos. |
| Roundup Ready® technology adoption and the cultivation of a second crop have changed chemical control methods and weed management in the southwest region of Goiás State, Brazil. Considering these changes, this study aimed to perform a phytosociological survey in areas with glyphosate resistant soybeans and conventional soybeans as the main harvest and sorghum, maize, millet or fallow in succession as the second harvest. A multivariate matrix of the floristic composition was constructed, and the indicator values of the individual number and dry biomass of species were measured. Based on the number of individuals, the species Chamaesyce hirta, Bidens subalternans, and Cissampelos ovolifolia were typical of areas cultivated with glyphosate-resistant soybean,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soybean; Second crop; Crop succession; Resistance; Herbicide.; Fitotecnia. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/33049 |
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| Gaspar-Oliveira, Carolina Maria; UNESP; Martins, Cibele Chalita; Faculdade de Ciências Agronômicas / UNESP - Botucatu-SP; Nakagawa, João; Faculdade de Ciências Agronômicas - UNESP Botucatu-SP. |
| O objetivo do trabalho foi padronizar a metodologia de pré-condicionamento das sementes de mamoneira (Ricinus communis L.) para a avaliação do potencial fisiológico pelo teste de tetrazólio. Testaram-se os seguintes métodos de pré-condicionamento: sementes com tegumento entre papel umedecido a 30, 35 e 40°C por 6, 8, 10, 12, 14, 16 e 18h; sementes sem tegumento entre papel umedecido e sementes com tegumento imersas em água a 25, 30, 35 e 40° C por 1, 2, 3, 4, 5 e 6h. Após o pré-condicionamento, removeu-se o tegumento das sementes, que foram cortadas no sentido do comprimento e imersas na solução de tetrazólio a 0,2%, por 120 min., a 35°C. Avaliaram-se a porcentagem de germinação das sementes, o teor de água, antes e após a... |
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Palavras-chave: 5.01.00.00-9; 5.01.03.00-8; 5.01.03.03-2 Viabilidade; Mamona; Metodologia; Potencial fisiológico Agronomia; Fitotecnia; Produção e Beneficiamento de Sementes Viability; Castor bean; Methodology; Physiological potential. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6025 |
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| Heredia Zárate, Néstor Antonio; Universidade Federal da Grande Dourados; Vieira, Maria do Carmo; Universidade Federal da Grande Dourados; Faccin, Fabiane Cargnin; Universidade Federal da Grande Dourados; Heredia Vieira, Danilo Augusto; Universidade Estadual de Maringa; Gassi, Rosimeire Pereira; Universidade Federal da Grande Dourados; Santos, Anna Luiza Farias dos; Universidade Federal da Grande Dourados. |
| This study aims to discover the agro-economic yield of the ‘Comum’ tannia, which was propagated with five seedling types (Extra, Large, Medium, Small and Tiny) and grown both with and without a hilling operation during three crop seasons. In each agricultural year, the treatments were arranged as a 5 x 2 factorial in a randomized complete block design with four replications. The harvests were conducted 238 (2007-08), 231 (2008-09) and 237 (2009-10) days after planting. The data were submitted to an analysis of variance each year. The plants produced from large seedlings and RM-corms had a higher fresh leaf weight. Additionally, the dry weight of the RFC-commercial cormels and RFNC-non-commercial cormels was higher with extra seedlings. The plants grown... |
| Tipo: Pesquisa de campo |
Palavras-chave: Agronomia; Fitotecnia; Tratos culturais Xanthosoma mafaffa; Propagation materials; Cultural treatments; Yield; Income Tratos culturais. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16152 |
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| Marcondes, Mariana Martins; Faria, Marcos Ventura; Mendes, Marcelo Cruz; Gabriel, Andre; Neiverth, Victor; Zocche, Jean Carlos. |
| This study aimed to evaluate the performance of 46 maize lines (S4) obtained from crosses between the commercial hybrids Penta x P30F53 in topcrosses with the commercial simple cross hybrid Dow8460 (tester) and checks (hybrids Penta, P30F53, Dow8460 and Status). The grain yield was evaluated in two environments in Guarapuava, Paraná State, and the effects of genotype, environment and genotype x environment interaction were significant. The grain yield of the topcross hybrids ranged from 8,416 to 13,428 kg ha-1. The agronomic characteristics of the forage and the bromatological characteristics of the silage were evaluated in environment 1. The green mass yield of the forage ranged from 48,767 to 87,714 kg ha-1 and the dry mass yield ranged from 14,749 to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitotecnia; Melhoramento Genético Vegetal Zea mays; Acid detergent fiber; Neutral detergent fiber; Silage; Plant breeding Melhoramento Genético de Milho. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28307 |
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| Shibata, Marilia; Coelho, Cileide Maria Medeiros; Araldi, Cristhyane Garcia; Adan, Natalia; Peroni, Nivaldo. |
| Araucaria angustifolia seeds are the basis for the rural economy in southern Brazil, and the species presents different botanical varieties. The objective of this work was to evaluate the diversity of physical, physiological and biochemical characteristics of Araucaria angustifolia seeds from local varieties: ‘sancti josephi’, ‘angustifolia’, ‘caiova’, and ‘indehiscens’. Seeds were collected from the cities of Painel and Urubici in Santa Catarina State and tested for moisture content, 1000-seed weight, emergence, emergence speed index (ESI), root and shoot length, electrical conductivity, tetrazolium, soluble carbohydrates, and starch content. Among the varieties cited above, the angustifolia variety from Painel displayed a greater 1000-seed weight, ESI,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitotecnia; Produção e beneficiamento de sementes; Sementes florestais viability; Vigor; Carbohydrates; Caiova; Indehiscens; Sancti josephi fisiologia de sementes. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/27976 |
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| Costa, Irton de Jesus Silva; Costa, Bárbara Nogueira Souza; Assis, Franscinely Aparecida de; Martins, Adalvan Daniel; Pio, Leila Aparecida Salles; Pasqual, Moacir. |
| Butia capitata (Mart.) Becc., commonly known as jelly palm, is a palm tree native to the Cerrado biome. It is considered an endangered species owing to intensive extractive exploitation of its fruits, with slow and uneven seminiferous propagation as an aggravating factor. Thereby, there are some bottlenecks related to jelly palm seedling production that needs to be optimized. Light quality and intensity is very important to seedling production, as it controls the metabolism of plants and consequently their growth and development. Thus, the aim of this work is to evaluate the effect of shade nets on the growth and physiological aspects of jelly palm seedlings. The experimental design was completely randomized, with five treatments, ten replicates and eight... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitotecnia; Culture tissud. shading; Palm tree; Colored nets; Light. Tropical fruit growing; Propagation; Native plants; Physical numbness.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35332 |
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| Costa, Bárbara Nogueira Souza; Dias, Gabrielen de Maria Gomes; Costa, Irton de Jesus Silva; Assis, Franscinely Aparecida de; Silveira, Flávia Aparecida da; Pasqual, Moacir. |
| The objective of this study was to determine the silicon concentration that would provide good growth in passion fruit plants. Passion fruit seeds were sown in polystyrene. After 60 days, when they were approximately 15 cm tall, the plants were transplanted into polyethylene pots containing 1.1 kg Tropstrato® substrate. Treatments consisted of four concentrations (0, 0.28, 0.55, and 0.83 g pot-1) of silicon applied as a silicic acid solution 1%. This solution was applied around the stem of the plants (drenched), with the first application being administered 15 days after transplanting. In total, three applications were made at intervals of 15 days. After the last application, the plants were subjected to chemical analysis to determine the silicon... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitotecnia; Fruticultura; Propagação de Frutiferas flow cytometry; Silicic acid; Passiflora edulis Propagação de frutiferas. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30939 |
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| Silva, Marcus Vinícius Vieira da; Instituto Federal Goiano; Sales, Juliana de Fátima; Instituto Federal Goiano; Silva, Fabiano Guimarães; Instituto Federal Goiano; Neto, Aurélio Rubio; Instituto Federal Goiano; Alberto, Paula Sperotto; Instituto Federal Goiano; Pereira, Flávia Dionísio; IFGoiano - Campus Rio Verde. |
| The objective of this study was to evaluate the physiological quality of babassu (Orbignya phalerata Mart.) embryos as a function of desiccation. The fruits were placed in a convection oven at 37±2°C for 0, 3, 6, 9, or 12 days. After these periods, the moisture contents of the fruits and seeds were determined. A reduction in the water content occurred more rapidly in the fruits than in the seeds. The decrease in seed moisture content from 12.59% (on the basis of fresh weight) to 4.56% did not affect the percentage of germinated zygotic embryos; however, we did observe a decline in the vigor as the seed moisture content decreased. Embryos with a 4.56% moisture content developed into seedlings of shorter lengths after 30, 60, and 90 days of in vitro growth.... |
| Tipo: Pesquisa Empírica |
Palavras-chave: 5.01.03.00-8 Arecaceae; Desiccation tolerance; Tissue culture; Fitotecnia. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13429 |
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| Vettorazzi, Renato Gobbi; Carvalho, Virginia Silva; Sudré, Cláudia Pombo; Rodrigues, Rosana. |
| This study aimed to develop a protocol for the in vitro conservation of 30 accessions of sweet potato collected in the northern region of Rio de Janeiro State, Brazil, aiming to extend the period between subcultures for this species. An in vitro minimal growth experiment was established with accession UENF 1931 in a factorial arrangement consisting of four concentrations of mineral salts in MS medium and four concentrations of sucrose, at two temperatures. The others accessions were grown in medium containing 100% MS salts and 2% sucrose, which was the medium that allowed the in vitro conservation of accession UENF 1931 for a longer time period. For this second experiment, 30 accessions of sweet potato and two temperatures were used. Plant height, number... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.00-8 Ipomoea batatas; Minimal growth; Germplasm bank; Maintenance of diversity; Fitotecnia. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32700 |
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| Lacerda, Mábio Chrisley; Nascente, Adriano Stephan. |
| This study aimed to evaluate the effect of row spacing and nitrogen topdressing fertilization of two materials (genotype 07SEQCL441 CL and cultivar BRS Esmeralda) on the plant height, yield components, grain yield, and quality of an upland rice crop grown in a no-tillage system. Trials were conducted for two growing seasons under field conditions in a 3 x 4 factorial, randomized, complete block design, with four replications. For each material, treatments consisted of the combination of row spacing (0.225, 0.35, and 0.45 m) with nitrogen (N) applied as topdressing (0, 50, 100, and 150 kg ha-1). The lowest row spacing (0.225 m) for genotypes 07SEQCL441 CL and BRS Esmeralda provided a higher number of tillers, number of panicles m-2, and grain yield of rice.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitotecnia; Cultivares Oryza sativa L.; Nitrogen; Plant population; NTS; Cerrado fitotecnia. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30855 |
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| Pereira, Carlos Eduardo; Universidade Estadual de Santa Cruz; Moreira, Fátima Maria de Souza; Universidade Federal de Lavras; Oliveira, João Almir; Universidade Federal de Lavras; Caldeira, Carla Massimo; Universidade Federal de Lavras. |
| This research evaluated the development of soybean plants grown in a greenhouse, from seeds that were treated with fungicide, film coated and inoculated with Bradyrhizobium. Seeds from the soybean cultivar ‘Vencedora’ were submitted to treatments disposed in a factorial 5 x 3 x 2 design. The seeds were treated with Derosal Plus® with polymer; Tegran® with polymer; Derosal Plus® without polymer, Tegran® without polymer; and without fungicide and without polymer. After the chemical treatment, the seeds were inoculated with peat or liquid inoculants, and without inoculant. The chemical treatments were used either previous to or after the six months of storage. Seed inoculation was performed with CPAC15 and BR29 strains,... |
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Palavras-chave: 5.00.00.00-4; 5.01.00.00-9; 5.01.01.04-8; 5.01.02.05-2; 5.01.03.00-8; 5.01.03.03-2 Glycine Max; Polymer; Tegran; Derosal Plus; Bradyrhizobium Ciências Agrárias; Agronomia; Microbiologia e Bioquímica do Solo; Defesa Fitossanitária; Fitotecnia; Produção e Beneficiamento de Sementes Glycine Max; Polymer; Tegran; Derosal Plus; Bradyrhizobium. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5756 |
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| Paiva, Emanoela Pereira de; Torres, Salvador Barros; Alves, Tatianne Raianne Costa; Sá, Francisco Vanies da Silva; Leite, Moadir de Sousa; Dombroski, Jeferson Luiz Dallabona. |
| Most plant species are susceptible to the effects of salinity, such as increases in osmotic potentials and deleterious ionic effects, which in turn affect water absorption in plants and, consequently, compromise germination and seedling growth. Hence, this study aimed to evaluate the effects of salinity on the germination, initial growth, and physiological and biochemical components of S. hispanica seedlings at different temperatures. The experimental design was completely randomized, with treatments distributed in a 5 x 4 factorial scheme with five saline concentrations (0.0 (control), 4.5, 9.0, 13.5, and 18.0 dS m-1) four temperature regimes (20, 25, 30, and 20-30°C), and four replicates of 50 seeds per treatment. The experiment evaluated the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Produção Vegetal; Fitotecnia; Produção e Tecnologia de Sementes Lamiaceae; Chia; Salt stress; Thermal stress. Produção e Beneficiamento de Sementes. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39396 |
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| Registros recuperados: 58 | |
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