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| Registros recuperados: 23 | |
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| CORREIA,N.M.; ACRA,L.T.; BALIEIRO,G.. |
| This study aimed to control different populations of Digitaria insularisby glyphosate herbicide, isolated and mixed, besides the combination of methods (chemical and mechanical) to manage resistant adult plants. Three experiments were conducted, one in pots which were maintained under non-controlled conditions and two under field conditions. In the experiment in pots, twelve populations of D. insularis were sprayed with isolated glyphosate (1.44 and 2.16 kg a.e. ha-1) and mixed (1.44 and 2.16 kg a.e. ha-1) with quizalofop-p tefuryl (0.12 kg i.a. ha-1). The treatment of 1.44 kg a.e. ha-1 of glyphosate plus 0.12 kg a.i. ha-1 of quizalofop was sufficient for adequate control (>95%) of all populations. Population 11 (area of grain production in Itumbiara,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Desiccation; Glyphosate; Tolerance; Genetic variability. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100093 |
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| Cruz,Eniel David. |
| The objective of this study was to verify the effect of drying on germination of cupuassu (Theobroma grandiflorum (Willd. ex Spreng) K. Schum.) seeds. Desiccation was in forced air oven, with temperature ranging from 23 to 33ºC. Sowing was carried out at 0.5cm of depth in plastic trays in sand and sawdust mixture (1:1), previously sterilized in hot water (100ºC), during 2h. Seeds were left to germinate in a laboratory with no temperature and relative humidity control, under natural light. It was quantified the seed moisture content, in four replications of 10 seeds; the germination percentage, performed during 30 days, with daily counts of the number of germinated seeds; the germination speed index; and number of days to the germination onset. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical fruit; Recalcitrant seed; Desiccation; Dehydration. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222007000300024 |
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| MAGALHAES, P. C.; SILVA, J.B.; DURAES, F. O. M.; KARAM, D.; RIBEIRO, L.S.. |
| A aplicacao de herbicidas, seja para dessecacao de culturas ou para controle de plantas daninhas, vem crescendo, devido a expansao da fronteira agricola brasileira. Esse fato aumenta os riscos de ocorrencia de deriva acidental em culturas vizinhas suscetiveis; no entanto, as perdas em produtividade dessas culturas sao desconhecidas em muitas situacoes de ocorrencia de deriva de herbicidas. O objetivo deste trabalho foi avaliar a fitotoxicidade causada por doses reduzidas dos herbicidas glyphosate e paraquat simulando deriva, bem como seus efeitos, no desenvolvimento das plantas e no rendimento de graos de sorgo. O estudo foi conduzido durante os anos agricolas 1996/97 e 1997/98, utilizando-se o hibrido BR 700 no delineamento de blocos ao acaso, com 12... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Sorgo; Fitotoxicidade; Herbicidas; Dessecantes; Sorghum bicolor; Phytotoxicity; Herbicides; Desiccation. |
| Ano: 2001 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/485059 |
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| REIS, A.M.M.; CUNHA, R. da. |
| O angico vermelho (Anadenanthera peregrina (L.) Speg.), especie arborea da familia leguminoseae, subfamilia Mimosoideae, ocorre desde a Regiao Amazonica ate o Sudeste brasileiro, em matas, campos altos e cerrados. Esta especie e comumente usada em arborizacao urbana e curtume, devido ao alto teor de tanino (15-20%) de sua casca. O objetivo deste trabalho foi estudar o comportamento das sementes de angico vermelho, sob diversas condicoes de umidade e armazenamento, visando ao estabelecimento de metodos para a conservacao de seu germoplasma. As sementes foram submetidas a quatro tratamentos: sementes com o conteudo de umidade inicial de 5,56% (testemuna); sementes hidratadas de 8,24% de umidade; sementes hidratadas (8,24%) e desidratadas ate 4,37% e sementes... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Criopreservacao; Armazenamento; Hidratacao; Dessecamento; Criopreservation; Storage; Hydration; Desiccation. |
| Ano: 1997 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/89515 |
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| ARGENTA, G.; SILVA, P.R.F. da; FLECK, N.G.; BORTOLINI, C.G.; NEVES, R.; AGOSTINETTO, D.. |
| Este trabalho teve o objetivo de avaliar os efeitos do manejo mecânico e químico da palha de aveia-preta e da época de semeadura do milho após a dessecação da aveia, sobre o rendimento de grãos do milho e sobre a infestação de capim-papuã (Brachiaria plantaginea Link). No ano agrícola de (1997/98, os tratamentos constaram de dois sistemas de manejo mecânico da aveia-preta (rolada e não- rolada) e do pousio invernal (controle), da dissecação da palha de aveia-preta com dois herbicidas não-seletivos (glyphosate e paraquat) e de duas épocas de semeadura do milho após a dessecação da aveia-preta (um e 15 dias). Na estação de crescimento 1998/99, foram avaliados cinco sistemas de manejo da aveia-preta (rolada, roçada e dessecada com glyphosate, com glufosinate... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Zea mays; Avena strigosa; Brachiaria plantaginea; Dessecacao; Manejo de cultura; Desiccation; Crop management. |
| Ano: 2001 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/103910 |
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| Dias,Roberto Júnio Pedroso; Bessa,Elisabeth Cristina de Almeida; D'Ávila,Sthefane. |
| The aim of this study was to verify the influence of substrate humidity on desiccation resistance of Subulina octona, continuously exposed, for 48 h, to the temperature of 35 °C. Forty individuals conditioned in 2 plastic boxes, one box containing black earth humidified with 40 ml water and the other one containing dry black earth were used. The retraction of cephalopodal mass inside the shell and the number of dead individuals was evaluated. Snails from dry and humid substrate boxes showed cephalopodal mass retraction of 9.9 cm±2.88 and 2.78 cm±3.17, respectively, after 12 h of exposure; 8.55 cm±1.3 and 6.33 cm±2.91, after 24 h; 11.07 cm±4.19 and 7.27 cm±2.7, after 36 h, 9.12 cm±2.15 and 6.47 cm±2.11, after 48 h. Every individual of dry substrate box died... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Land snail; Desiccation; Cephalopodal mass retraction; Substrate; Humidity. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000100016 |
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| CARVALHO, J. E. U. de; MÜLLER, C. H.. |
| Sementes de pupunheira (Bactris gasipaes Kunth) foram submetidas a dessecamento, em ambiente com ar condicionado (23 mais ou menos 1oC e umidade relativa do ar de 72 mais ou menos 5%), com o objetivo de determinar os níveis de tolerância e letal de umidade, assim como verificar as implica coes do dessecamento sobre o tempo médio e a uniformidade de germinação. A exposição das sementes, nesse ambiente, durante 0 (testemunha), 24, 48, 72, 96, 120 e 168 horas, possibilitou a obtenção dos seguintes graus de umidade: 48,0%; 36,8%; 30,9%; 22,7%; 20,2%; 15,8% e 12,6%, respectivamente. Imediatamente após cada período de secagem, as sementes foram semeadas em substrato de areia e serragem, misturadas na proporção volumétrica de 1:1. Os testes de germinação foram... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Bactris gasipaes; Desiccation; Dessecamento; Germinação; Germination; Pupunha; Seeds; Semente; Sementes recalcitrante; Recalcitrant seed. |
| Ano: 1998 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/961318 |
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| Silva, Lílian Abadia da; Sales, Juliana de Fátima; Neves, José Maria Gomes; Santos, Heloísa Oliveira dos; Silva, Glicélia Pereira. |
| Studies evaluating the internal morphology and seed quality of native species are essential for successful conservation programs. Our aim was to verify the efficiency of X-ray imagery in evaluating cashew-tree-of-the-cerrado (Anacardium othonianum Rizz.) achene viability after desiccation. The achenes were collected at 12% water content (w.b.) and dried in silica gel until they reached 10, 8, 6, and 4% (w.b.). The fruit morphology and the quality of the seeds were evaluated by X-ray test together with vigor, electrical conductivity and emergence tests. Achenes with different water contents were exposed to an X-ray machine at 18 kV for 11 s and were thereafter submitted to emergence tests. The images were analyzed, and the achenes were classified based on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.03-2 X-Ray; Fruit tree; Cerrado; Desiccation; Internal morphology. Produção e Beneficiamento de Sementes. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32484 |
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| Monaco, Cristian; Wethey, David S.; Gulledge, Shadow; Helmuth, Brian. |
| The body size of a mobile intertidal invertebrate can determine its access to different microhabitats, and thus alter its exposure to environmental stressors. We surveyed a rocky intertidal keystone predator, the sea star Pisaster ochraceus, and characterized size-dependent distribution, defined by individuals' shore level and refuge use. At 2 field sites (in California and Oregon, USA) we examined temporal and geographical variability in habitat selection. We evaluated the hypothesis that environmental drivers measured on-site and body temperatures measured using biomimetic sensors (i.e. 'robo-sea stars'), explained the observed distribution patterns, including shore-level size gradients, with larger animals lower on the shore. We tested the effect of... |
| Tipo: Text |
Palavras-chave: Ecology; Physiology; Rocky intertidal; Environmental stress; Climate change; Temperature; Desiccation; Solar radiation; Body size; Behavior. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00605/71695/70137.pdf |
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| Maguire, Julie A.; Fleury, Pierre-gildas; Burnell, Gavin M.. |
| (Not controled OCR) Because biological systems do not work in isolation, behavioral, biochemical, and physiological tests can give an overview of an individual's vital processes and reaction to stress. Two stress gradients were applied in this study, a short acute desiccation stress and a long-term density stress. These stress gradients were used to assess the usefulness of various techniques for quality assessment: namely, a standard salinity stress test, condition index, recessing speed of the scallop, adenylic energetic charge (AEC). and percentage carbohydrate content of the striated muscle. The results showed that AEC could be used effectively to measure the effect of a short-term stress. In the striated muscle. AEC levels were useful in... |
| Tipo: Text |
Palavras-chave: Density; Desiccation; Quality; Stress; Pecten maximus. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-2450.pdf |
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| Registros recuperados: 23 | |
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