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| Registros recuperados: 81 | |
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| El-Nagdi, wafaa M.A.; Youssef, Mahmoud M.A.. |
| Abstract: Under screenhouse conditions , two mashed leaves of plants belonging to the genus Brassica, cabbage (Brassica oleracea var. Capitata L.) and kohlrabi (Brassica caulorapa L.) were used as pre-and at sowing biofumigants at 20g/pot for managing root knot nematode, Meloidogyne incognita on cowpea (Vigna unguiculata (L.) Walp)compared to metam potassium and metam sodium as chemical biofumigants as well as untreated check. It was found that, in general, there was a positive correlation between the time of the addition of the plant residue (10 and 5 days before sowing and at sowing time) and the percentage final nematode population reduction i.e., the highest percentages final nematode reduction (70.4 and 82.1%) occurred when Brassica oleracea and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica plants; Mashed leaves; Cowpea; Root knot nematode.. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5050 |
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| FERNANDES,FRANCISCO S.; GODOY,WESLEY A.C.; RAMALHO,FRANCISCO S.; GARCIA,ADRIANO G.; SANTOS,BÁRBARA D.B.; MALAQUIAS,JOSÉ B.. |
| ABSTRACT Population dynamics of aphids have been studied in sole and intercropping systems. These studies have required the use of more precise analytical tools in order to better understand patterns in quantitative data. Mathematical models are among the most important tools to explain the dynamics of insect populations. This study investigated the population dynamics of aphids Aphis gossypii and Aphis craccivora over time, using mathematical models composed of a set of differential equations as a helpful analytical tool to understand the population dynamics of aphids in arrangements of cotton and cowpea. The treatments were sole cotton, sole cowpea, and three arrangements of cotton intercropped with cowpea (t1, t2 and t3). The plants were infested with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aphids; Cotton; Cowpea; Dynamics; Mathematical models. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100311 |
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| Braga,Yussef F.B.; Grangeiro,Thalles B.; Freire,Eder A.; Lopes,Helano L.; Bezerra,José N. S.; Andrade-Neto,Manoel; Lima,Mary Anne S.. |
| The effect of 2-tridecanone vapor on the cowpea weevil (Callosobruchus maculatus) development was determined. Seeds of cowpea were infested with adults and exposed to different doses of 2-tridecanone isolated from Pilocarpus microphyllus Stapf ex Holm, a plant species native from northeastern Brazil. The pure monoterpene was evaluated both undiluted as well as in the dilutions 1:10, 1:100 and 1:1,000 (v/v). The following parameters of the cowpea weevil life cycle were analyzed in response to decreasing doses of 2-tridecanone: number of eggs laid, percentage of egg hatching on seeds, percentage of adult emergence, adult weight at emergence, mean developmental time and number of adults emerged. Vapor of 2-tridecanone caused a significant (P < 0.05)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Callosobruchus maculatus; Cowpea; 2-tridecanone; Pilocarpus microphyllus. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000100005 |
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| Zilli,Jerri Édson; Valisheski,Romano Roberto; Freire Filho,Francisco Rodrigues; Neves,Maria Cristina Prata; Rumjanek,Norma Gouvêa. |
| In order to contribute for the optimization of biological nitrogen fixation (BNF) associated with cowpea in Cerrado areas in the Northeast region of Brazil, this work aimed to analyze the diversity of rhizobial populations in eight areas of Cerrado, during a soybean and rice-cowpea rotation. Morphological traits (mucous production and colony morphology), genotypic analyzes (ARDRA 16S) and intrinsic resistance to antibiotics were determined for a collection of isolates captured using cowpea as a host-plant. The morphological data showed a inverse correlation (p < 0.05) between the number of legume (soybean and cowpea) crops, according to the history of each area, and rhizobium diversity, estimated by the Shannon-Weaver index. ARDRA data showed that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diversity; Bradyrhizobium; Cerrado; Cowpea; Antibiotic. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000300002 |
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| Sudério,Fabrício Bonfim; Barbosa,Gislainy Karla da Costa; Gomes-Filho,Enéas; Enéas-Filho,Joaquim. |
| Three β-galactosidase isoforms, β-gal I and β-gal II (cytosolic) and β-gal III (cell wall-associated), were isolated from stems of Vigna unguiculata (L.) Walp. cv. Pitiúba seedlings. Purification consisted of aμMonia sulfate fractionation followed by chromatography in DEAE-Sephadex and Lactosyl-Sepharose columns. The two cytosolic isoforms showed the same chromatography pattern, which differed from that of β-gal III. Electrophoresis revealed a single band of protein for β-gal II and β-gal III which also expressed β-galactosidase activity in gel. The apparent molecular mass of the β-gal I, II and III was 89, 146 and 124 kDa, respectively. The three isoforms revealed the same optimal pH (4.0) and the same optimal assay temperature (55ºC) for enzyme activity.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzymatic kinetics; Cowpea; Optimal pH; Enzyme purification; Thermal stability; Thermal inactivation. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000100003 |
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| MIRANDA,Joyce Aparecida Tavares de; CARVALHO,Lucia Maria Jaeger de; VIEIRA,Ana Claudia de Macedo; CASTRO,Izabela Miranda de. |
| Abstract Beans are a vital food for the population around the world because it contains a relatively high amount of protein, vitamins, fiber, and minerals, being an important vegetable source of iron, particularly when combined with ascorbic acid and cysteine. The starch content in the seed is between 45 and 60%. This paper evaluated the granular structure of starches from common beans (Phaseolus vulgaris) and cowpea (Vigna unguiculata) in raw and cooked forms by Scanning Electron Microscopy (SEM), and their crystallinity by X-ray diffraction (DR-X). By SEM, was observed the occurrence of gelatinization phenomenon in cowpea and carioca beans, and the resistance to this event in black beans. By DR-X, the diffraction angles found in this work are more... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Starch; Bean; Cowpea. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600718 |
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| SILVA, M. A. da; MILLAR, A. A.. |
| Trata de definir as caracteristicas de evapotranspiracao do feijao-de-corda sob regime de irrigacao e diferentes doses de nitrogeni. A evapotranspiracao media do feijao-de-corda foi de 3,68 e 3,58 m/dia. E para uma evaporacao media do tanque Classe A (MUSB) de 8,84 mm/dia, o que corresponde a um coeficiente de cultivo, Kc medio de 0,42 e 0,40 respectivamente, para 80 e 120 kg/ha de nitrogenio, com 466 mm de agua aplicada durante o ciclo. A evapotranspiracao (ET) de um cultivo, varia de acordo com o estagio de crescimento da cultura e as condicoes de solo e clima. |
| Tipo: Parte de livro |
Palavras-chave: Feijao-de-corda; Cowpea; Irrigação; Climatologia; Evapotranspiração; Vigna Unguiculata; Climatology; Evapotranspiration; Irrigation. |
| Ano: 1981 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133331 |
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| O feijão-caupi passa por importantes avanços tecnológicos e socioeconômicos no Brasil. Nos Cerrados do Centro-Oeste, em particular no Estado de Mato Grosso, onde parte da produção tem sido exportada para países europeus e asiáticos, a cultura desperta cada vez mais o interesse de produtores. Esse cenário tem demandado cultivares melhor adaptadas ao ciclo curto (safrinha), ao cultivo mecanizado (arquitetura de planta moderna e uniformidade de maturação) e com grãos maiores, que têm maior aceitação nos mercados interno e externo. Este foi o desafio da Embrapa, que apresenta ao mercado a primeira cultivar de feijão-caupi com grãos extra grandes. |
| Tipo: Folders |
Palavras-chave: Cultivo mecanizado; Grão extra grande; Cowpea; Feijão de corda; Safrinha; Mercado; Vigna unguiculata. |
| Ano: 2016 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1047743 |
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| Registros recuperados: 81 | |
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