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| Registros recuperados: 18 | |
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| SOUZA, O. C. de; ZIMMER, A. H.; VALLE, L. da C. S.; KOLLER, W. W.. |
| Ocorrência de morte de pastagens de Brachiaria brizantha nas regiões de Araguaína, em Tocantins e Redenção, no sul do Pará, motivou pesquisadores da Embrapa Gado de Corte a realizarem uma viagem de diagnóstico, durante o período de 4 a 9 de março de 1999. Constatou-se que a morte das pastagens ocorria em áreas localizadas (reboleiras) das pastagens. Apesar de terem sido verificadas altas infestações de cigarrinhas-das-pastagens, bem como de cupins subterrâneos, em alguns locais, o excesso de água em áreas de depressão do terreno (condição favorável ao ataque de fungos nas raízes - principalmente do gênero Rhizoctonia), associado a um estado geral de degradação de pastagens por excesso de uso (manejo inadequado), foram consideradas as principais causas da... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Araguaína; Redenção; Tocantins; Pará; Brasil; Diseases.; Brachiaria Brizantha; Deterioração; Doença; Pastagem; Praga.; Deterioration; Brazil; Pastures; Weeds.. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/324205 |
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| VALÉRIO, J. R.; SOUZA, O. C. de; VIEIRA, J. M.; CORRÊA, E. S.. |
| No Estado de Mato Grosso, na região compreendida pelos municípios de Rondonópolis, Cuiabá, Tangara da Serra, Diamantino, Sinop, Santa Helena, e Chapada dos Guimarães, não se observou problema significativo de morte de pastagens de Brachiaria brizantha, conforme diagnostico realizado no período de 27 de marco a 2 de abril de 2000, por pesquisadores da Embrapa Gado de Corte. Por meio de observações realizadas nas fazendas visitadas, bem como, através de informações obtidas junto a proprietários e/ou administradores, constatou-se que os raros casos de morte de pastagens na região estavam restritos a pequenas áreas dentro das pastagens. Excesso de umidade, em alguns casos (Tangara da Serra e Sinop) e estresse hídrico, em outro (Chapada dos Guimarães), foram as... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Marandu; Degradação; Rondonópolis; Cuiabá; Tangará da Serra; Diamantino; Sinop; Santa Helena; Chapada dos Guimarães; Mato Grosso; Brasil.; Brachiaria Brizantha; Deterioração; Pastagem; Praga.; Deterioration; Brazil; Pastures; Weeds.. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/325121 |
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| Ono,Elizabeth Orika; Leonel,Sarita; Duarte Filho,Jayme; Rodrigues,João Domingos. |
| The effects of storage time and exogenous gibberellic acid on lychee seeds germination were studied. The seeds were removed from ripe fruits, washed, dried, stored at 8°C for 0, 15 and 30 days, and soaked during 24 hours in water and GA3 at 50, 100 and 200 mg.L-1 solutions. As the storage period increased, the germination capacity was lost, and the seeds had a short germinability after 30-day storage period. Gibberellic acid had not significant effect on enhancing both the germination percentage and rate. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gibberellic acid; Gibberellins; Deterioration; Viability; Recalcitrant seed. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000400015 |
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| Moreira,Silvia Regina; Schwan,Rosane Freitas; Carvalho,Eliana Pinheiro de; Wheals,Alan E.. |
| Seventy-two cartons of yoghurt were sampled three times at monthly intervals from four different local manufacturers. Total counts were close to 6 x 10(7) cells g-1 of yoghurt. Yeast counts varied from 1 to 2,700 g-1. There was no evidence of systematic contamination at source but this longitudinal study revealed that ad hoc contamination and improper storage led to the higher yeast counts. Contamination was generally higher in the hotter months but was lower overall than reported from other countries. A total of 577 yeast isolates were identified belonging to ten species. The most abundant yeasts were, in order, Debaryomyces hansenii, Saccharomyces cerevisiae, Mrakia frigida, Hansenula spp., Candida parapsilosis, Debaryomyces castellii and Candida... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yeasts; Filamentous fungi; Yoghurts; Deterioration. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000200009 |
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| Peñaloza,Patricia; Ramirez-Rosales,Gerardo; McDonald,Miller B; Bennett,Mark A.. |
| High seed quality is essential for optimum stand establishment in lettuce. As a result, it is necessary to have seed vigour tests that permit rapid, objective and accurate evaluation of seed quality. This study evaluated physical and physiological seed quality components of four seed lots of six lettuce varieties obtained from a commercial company. Seeds were evaluated for seedling emergence under greenhouse conditions, standard germination, seed physical aspects, the Saturated Salt Accelerated Aging (SSAA) test and the Seed Vigour Imaging System (SVIS). Results indicated that large-seeded lettuce varieties had higher percentage germination, higher SSAA values, higher SVIS index and more rapid and uniform greenhouse emergence. Black-seeded lettuce... |
| Tipo: Journal article |
Palavras-chave: Vegetables; Deterioration; Seedling; Performance. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000300010 |
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| COSTA, F. P.. |
| Problemas técnicos relacionados ao manejo das pastagens vêm sendo estudados com grande frequencia e profundidade. Pouco esforço, porém, tem sido dirigido para entender as ações e motivações dos produtores, relacionadas a tal manejo. O presente trabalho e um estudo exploratório neste sentido, apresentando o resultado de um levantamento realizado em uma amostra de 100 pecuaristas de corte da microrregião homogênea Pastoril de Campo Grande, no Estado de Mato Grosso do Sul. As entrevistas tiveram como base um questionário englobando os seguintes tópicos: características gerais dos produtores e suas preferências na aplicação dos recursos financeiros; disponibilidade e uso dos recursos produtivos, incluindo pastagens e alimentação suplementar, bovino, máquinas,... |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Bovino de corte; Taxa de lactação; Super-pastejo; Campo Grande; Mato Grosso do Sul; Brasil; Stocking density; Management; Agricultural workers; Feeding; Brazilian savannas.; Alimentação; Cerrado; Deterioração; Manejo; Maquina; Mão-de-Obra; Pecuarista.; Pastagem; Brazil; Farmers; Equipment; Deterioration; Beef cattle; Overgrazing; Pastures.. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/323700 |
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| Toledo, Mariana Zampar; Universidade Estadual Paulista "Júlio de Mesquita Filho"; Teixeira, Renake Nogueira; Universidade Estadual Paulista "Júlio de Mesquita Filho"; Ferrari, Tainara Bortolucci; Universidade Estadual Paulista "Júlio de Mesquita Filho"; Ferreira, Gisela; Universidade Estadual Paulista "Júlio de Mesquita Filho"; Cavariani, Cláudio; Universidade Estadual Paulista "Júlio de Mesquita Filho"; Cataneo, Ana Catarina; Universidade Estadual Paulista "Júlio de Mesquita Filho". |
| Crambe is a promising crop for biodiesel production, mainly due to the high oil content of its seeds. However, there have been no effective methodologies for evaluating the physiological quality of crambe seeds. Seed lots have not been compared, especially by vigor tests, such as the accelerated aging. The objective of this study was to evaluate the effects of high temperature and exposure periods on the physiological quality and enzymatic activity of crambe seeds during the accelerated aging test. Two lots of crambe seeds of the Brilhante cultivar were analyzed by tests of moisture content, weight of 1,000 seeds, germination, first count, electrical conductivity, enzymatic activity (peroxidase and superoxide dismutase) and seedling length. All tests were... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: 5.01.03.03-2 Crambe abyssinica; Germination; Vigor; Deterioration Produção e Beneficiamento de Sementes Crambe abyssinica; Germination; Vigor; Deterioration. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/8248 |
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| Gonçalves,Letícia Dias dos Anjos; Piccoli,Roberta Hilsdorf; Peres,Alexandre de Paula; Saúde,André Vital. |
| Abstract Meat is one of the most perishable foods owing to its nutrient availability, high water activity, and pH around 5.6. These properties are highly conducive for microbial growth. Fresh meat, when exposed to oxygen, is subjected to the action of aerobic psychrotrophic, proteolytic, and lipolytic spoilage microorganisms, such as Pseudomonas spp. The spoilage results in the appearance of slime and off-flavor in food. In order to predict the growth of Pseudomonas fluorescens in fresh meat at different pH values, stored under refrigeration, and temperature abuse, microbial mathematical modeling was applied. The primary Baranyi and Roberts and the modified Gompertz models were fitted to the experimental data to obtain the growth parameters. The Ratkowsky... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Meat; Deterioration; Modeling. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200352 |
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| Cruz,Eniel David; Cicero,Silvio Moure. |
| The response of seeds to reduction in moisture content will determine whether they can be stored by conventional methods. The objective of this study was to verify the effect of desiccation on the germination and vigor of cupuassu (Theobroma grandiflorum (Willd. ex Spreng.) K. Schum.) seeds, a tropical fruit species. The following seed moisture contents (SMC) were tested: 57.1%, 53.7%, 49.8%, 46.5%, 41.4%, 35.4%, 28.3%, 23.2%, 17.4%, 15.5% and 14.6%. Desiccation of seeds to as low as 41.4% (SMC) did not affect emergence, germination or vigor. However, reductions in speed of emergence were observed below 41.4%. When SMC was equal or lower than 35.4% a reduction in seed quality was observed. Loss of seed quality was increased when moisture content was equal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Deterioration; Dehydration; Drying; Physiological quality. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000500017 |
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| da Silva, Raimunda Nonata Oliveira; Cavalcante, Jerffeson Araujo; Gadotti, Gizele Ingrid; Martins, Andrea Bicca Noguez; Teixeira, Sheila Bigolin; Vergara, Rafael Oliveira; de Tunes, Lilian Vanussa Madruga. |
| The objective of this study was to verify the separation of soybean seed lots according tovigor levels by the rapid ethanol test follow ing the adapted ethylometer method. The design used was entirely randomized, with four repetitions. The treatments consisted of five soybean seed lots, which were submitted to germination tests, first germination count, accelerated aging, field emergence, and electrical conductivity and ethanol measurement test. To measure ethanol, 50 soybean seeds were placed in plastic bottles containing 50 mL of distilled water, then placed in a BOD incubator for different temperatures and exposure times. After the imbibition period, measurements were performed with the aid of an adapted ethylometer. It is possible to quantify ethanol... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max L.; Physiological quality; Deterioration; Alcohol. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6453 |
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| Pádua,Gilda Pizzolante de; França-Neto,José De Barros; Carvalho,Maria Laene Moreira de; Costa,Odair; Krzyzanowski,Francisco Carlos; Costa,Nilton Pereira Da. |
| The occurrence of green soybean seed due to forced maturation or premature plant death caused by drought or foliar and/or root diseases has been common in several Brazilian production areas. Physiological quality of seed lots with green seed may have their germination and vigor potentials affected and therefore discarded by the grain industry. The objective of this experiment was to determine the maximum tolerated level of green seed in soybean seed lots, which is information of major importance for seed producers when taking the decision whether to sell these lots. Soybean seed of the cultivars CD 206, produced in Ubirata, Parana, and FMT Tucunare, produced in Alto Garças, Mato Grosso, were used in the study. Green seed and yellow seed of both cultivars... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Chlorophyll; Deterioration; Vigor. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222007000300015 |
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| Marcondes, Maria Celeste; UEL - Universidade de Londrina; Andreoli, Claudinei; Embrapa Soja; Miglioranza, Édison; UEL. |
| The objective of this research was to determine the deterioration rate of BRS 208 and CD 104 wheat cultivar seeds, treated with fungicides, by applying the viability equation. Seeds were stored in conventional warehouses in Mauá da Serra and Londrina, in the State of Paraná, Brazil. Four seed lots were divided into four replications, half being treated with Carboxin + Thiran and the other half taken as controls, without treatment, and these were stored for 300 days. The germination data were transformed into probit, and a straight line was adjusted between 0 and 30 days. The treated seed lot of cv. BRS 208 stored in Londrina gave seed deterioration rates varying from 0.8.10-3 to 1.3.10-3, not differing from the values given for the similar lot stored in... |
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Palavras-chave: 5.01.03.03-2 Triticum aestivum L.; Deterioration; Storage; Seed treatment; Mathematic model Produção e Beneficiamento de Sementes Triticum aestivum L.; Deterioration; Storage; Seed treatment; Mathematic model. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6455 |
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| Registros recuperados: 18 | |
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