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| Registros recuperados: 51 | |
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| Tun Dzul, José de la Cruz. |
| El chile poblano en México se cultiva en una superficie de 35,000 ha anuales, pero su producción es poco rentable debido a su bajo rendimiento (13 Mg ha-1), siendo una de las principales causas la fertilización inadecuada por desconocimiento de sus requerimientos nutricionales. La presente investigación estuvo conformada por dos experimentos y tuvo por objetivo evaluar el efecto del nitrógeno, fósforo y potasio sobre el rendimiento y la calidad del fruto de chile poblano (cv. Caballero) en diferentes etapas fenológicas. Los experimentos se realizaron en invernadero y utilizando hidroponía. En el primer experimento se evaluó el efecto de NO3- (6, 9 y 12 me L-1), H2PO4- (0.5 y 1.0 me L-1) y K+ (5 y 7 me L-1), sobre el crecimiento de las plántulas,... |
| Tipo: Tesis |
Palavras-chave: Hidroponía; Invernadero; Crecimiento; Materia seca; Doctorado; Edafología; Hydroponics; Greenhouse; Plant growth; Dry matter. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1313 |
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| Miranda Villagómez, Erika. |
| La freesia es una especie florícola poco comercializada en México, con alto potencial como flor de corte, tolera bajas temperaturas, presenta amplia diversidad de colores y su aroma es agradable. En esta investigación se evaluó el efecto de malla negra (25 % transmitancia), malla roja (15 % transmitancia) y cubierta plástica (70 % transmitancia) en el crecimiento, desarrollo y calidad del tallo flora del freesia para corte. También se determinó el efecto de la concentración de la solución nutritiva Steiner (25, 50, 75 y 100 %) bajo malla sombra roja en estas variables. El estudio se llevó a cabo en el Campo Experimental del Colegio de Postgraduados, en Montecillo, México. En ambos experimentos se probaron dos fechas de siembra (22 de septiembre y 18 de... |
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Palavras-chave: Freesia x hybrida; Sistema hidropónico; Solución nutritiva; Crecimiento; Calidad del tallo floral; Malla sombra; Hydroponic system; Nutrient solution; Plant growth; Floral stem quality; Shade net; Fruticultura; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1714 |
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| RINCÓN-ROSALES,REINER; RUÍZ-VALDIVIEZO,VÍCTOR M; MONTES-MOLINA,JOAQUÍN A; GUTIÉRREZ-MICELI,FEDERICO A; DENDOOVEN,LUC. |
| The tropical legume Acaciella angustissima inoculated with or without Sinorhizobium mexicanum ITTG R7T strain was cultivated in an aluminium (Al) spiked soil to study its tolerance towards this metal. Seedlings of A. angustissima were grown in soil with 0, 2, 4 or 6 mg Al kg-1. The effect of Al and inoculation on growth, nodulation, and nitrogen and tannins content in the plants was monitored. Height and total and dry root weight of plantlets decreased significantly when soil was spiked with Al, but increased when inoculated. Al decreased the number of nodules. Inoculum increased total N and tannin content of the plantlets. It was found that Al reduced the growth of the tropical leguminous N2-fixing shrub A. angustissima, while inoculation with S.... |
| Tipo: Journal article |
Palavras-chave: Aluminium tolerance; Plant growth; Nodulation; Nitrogen and tannins content; Sinorhizobium mexicanum ITTG R7T; Soil. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000200009 |
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| Oliveira,Nelson Licínio C de; Puiatti,Mário; Santos,Ricardo Henrique S; Cecon,Paulo R; Rodrigues,Pedro Henrique R. |
| The use of cow urine can be considered an agricultural practice of low cost for farmers. Nevertheless, its efficiency on crop needs research information. The present research aimed to evaluate the effect of cow urine on the growth and yield of 'Regina 2000' lettuce, in an experiment carried out from January 13, 2006 to March 22, 2006. The experiment was set up with 12 treatments, in a split-plot design and four completely randomized blocks. The soil and leaf applications were installed in the plot. In the split-plot, cow urine was applied at different concentrations (0.00; 0.25; 0.50; 0.75; 1.00 and 1.25 %). The plot presented four rows with 1.75 m each, in 0.25 x 0.25 m spacing. The six central plants of the two central rows formed the sampled split-plot.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Plant growth; Biofertilizer. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000400006 |
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| Silva,Paulo Henrique Soares; Palaretti,Luiz Fabiano; Cecílio Filho,Arthur Bernardes; Silva,Yane Freitas da. |
| ABSTRACT In vegetables, especially the leafy ones, nitrogen (N) and water are essential in its growth, being N the second most absorbed and identified nutrient in the arugula leaf tissue. Water is essential for horticultural crops, so its use must be rational in order to achieve high yield. The objective of this study was to evaluate the effect of nitrogen levels and irrigation depths on the productive characteristics, the total leaf chlorophyll index (ICF) and nitrogen contents in the arugula culture. The experiment was arranged in a randomized block design subdivided in plots, with two factors: A) nitrogen levels applied in coverage (25, 50, 100, 125 and 150 mg dm-3) and B) irrigation depths [(50 and 100% of the available water capacity (AWC)]. At... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eruca sativa; Leaf chlorophyll index; Leafy vegetables; Water complementation; Plant growth. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000400343 |
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| FIGUEIREDO, E. O.. |
| Este estudo objetivou, por meio da curva média, avaliar o desempenho de modelos na classificação de sítio mais estável para as árvores dominantes de três povoamentos de Tectona grandis L.f., com idade entre 6 e 10 anos, na microrregião do Baixo Rio Acre, no Estado do Acre. Foram testados 15 modelos lineares e não-lineares, e avaliada a performance dos modelos pelas estatísticas: coeficiente de determinação (R2), média dos resíduos, erro padrão residual, erro percentual, gráfico de distribuição dos resíduos e estabilidade total de classificação das parcelas. A estabilidade da equação foi medida por meio do desvio padrão das classificações de sítio, nas diversas idades, para cada parcela. Todos os modelos testados apresentaram boas estatísticas de precisão,... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Teak; Sempre Verde; São Francisco I; São Francisco II; Rio Branco (AC); Acrelândia (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Análisis estadístico; Terreno agrícola.; Crecimiento de planta; Factores ambientales; Madera tropical; Essência florestal; Teca; Tectona grandis; Condição ambiental; Propriedade rural; População de planta; Fator de crescimento; Análise estatística; Flora.; Tropical wood; Environmental factors; Agricultural land; Plant growth; Statistical analysis.. |
| Ano: 2005 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/511251 |
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| THOMAZINI, M. J.; OLIVEIRA, T. K. de; ALBUQUERQUE, E. S. de; LESSA, L. S.; CAVALCANTE, M. de J. B.. |
| O Estado do Acre apresenta características propícias ao desenvolvimento da cultura dos citros. Porém, o curto período de oferta de frutos, mudas de baixa qualidade, indefinição de cultivares adaptadas, problemas fitossanitários e a falta de informações técnicas tornam-se fatores limitantes à ampliação do parque produtivo. Este trabalho teve como objetivos identificar as principais pragas, seus inimigos naturais e as doenças mais importantes da cultura dos citros em quatro municípios do Acre e avaliar aspectos vegetativos e produtivos de genótipos locais de citros, bem como o desenvolvimento vegetativo de combinações de cultivares copa e porta-enxerto. A pesquisa foi realizada de junho de 2002 a junho de 2004. Folhas de laranja, tangerina e limão foram... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: West Indian fruit fly; Embrapa Acre; Rio Branco (AC); Ramal Jarinau; Brasiléia (AC); Ramal Samaúma; Plácido de Castro (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Citros; Enfermedades y desórdenes de las plantas; Tangerinos.; Portainjertos; Naranjas; Crecimiento de planta; Limones; Laranja; Citrus sinensis; Limão; Citrus limonia; Tangerina; Citrus reticulata; Variedade resistente; Crescimento; Vigor híbrido; Porta enxerto; Doença de planta; Praga de planta; Identificação; Ácaro; Mosca; Campo Experimental; Características Agronômicas.; Citrus; Oranges; Lemons; Tangerines; Agronomic traits; Plant diseases and disorders; Plant growth; Heterosis; Rootstocks; Mites.. |
| Ano: 2005 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/504506 |
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| SERRANO, L. A. L.; MELO, D. S.; VIDAL NETO, F. das C.. |
| A poda de formação almeja proporcionar uma estrutura adequada às futuras plantas adultas, garantindo principalmente o máximo aproveitamento da radiação solar e adequado suporte à produção de frutos. Objetivou-se avaliar diferentes podas de formação em plantas dos clones de cajueiro-anão ?CCP 76?, ?BRS 189?, ?BRS 226? e ?BRS 265?, durante o primeiro ano pós-plantio no campo. Os tratamentos foram: sem poda (testemunha); eliminação das brotações do porta-enxerto e dos ramos laterais até 80 cm de altura (a partir do colo); o tratamento anterior adicionado da retirada de panículas; e apenas a retirada das panículas. Intervenções com a poda ocorreram aos 45, 105, 165, 255 e 405 dias após o plantio (DAP). |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Brotos do porta-enxerto; Retirada de panícula; Crescimento da planta; Rootstock sprout; Anacardium Occidentale; Rootstocks; Plant growth. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1129712 |
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| 平田, 昌弘; 岸川, 沙織; 近藤, 昭彦; 山中, 勤; 開發, 一郎; 本江, 昭夫; HIRATA, Masahiro; KISHIKAWA, Saori; KONDOH, Akihiko; YAMANAKA, Tsutomu; KAIHOTSU, Ichirow; DAMDIN, Batmunkh; HONGO, Akio; ダムディン, バトムンフ. |
| This stugy was carried dout to c1arifY the effects of some environmental factors on the seasonal growth of herbaceous plants and shrubs in the centra1 Mongolian plateau 2004. The relationship was analyzed between air temperature, precipitation, soil temperature，moisture as the environmenta1 factor and plant coverage，aboveground biomass as the vegetation factor. At the early plant growth stageο6 April to 30 May)，new shoots of Chenopodiaceae，Cyperaceae and Graminae emerged 3 weeks -4 weeks after above 0 oC of mean air temperature and soil temperature. It was suggested that the plant emergence and growth are promoted according to the rise of air and soil temperature even in precipitation deficiency at the early growth stage，if water resource is enough... |
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Palavras-chave: Mongolian plateau; Native platnt; Plant growth; Soil temperature and moisture; Weather condition. |
| Ano: 2009 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2657 |
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| Maeda, Shizuo; Silva, Helton Damin da; Bellote, Antonio Francisco Jurado. |
| The application of cellulosic waste in forest plantations is an alternative to disposal, but more studies are necessary to confirm the safity of this disposal. The response of Pinus taeda L. to salinity in Humic Distrocryept was evaluated. In plantation, the seedlings were assessed for their height and stem diameter (SD), and at 120 days, were assessed the SD, height, dried root biomass (DRB), shoot (DBS) and total dried matter (TDM). The contents of P, K, Ca, Mg and Na were determinated, and, based on these levels it was estimated the quantity of these elements and calculated the efficiency use in leaves and roots and translocation to the shoot. Except the relationship between DSB/DRB, the other variables were significantly influenced by increased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electric conductivity; Plant growth; Nutritional efficiency. Condutividade elétrica; Crescimento vegetal; Eficiência de utilização.. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/110 |
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| Lucena, Vanderlene Brasil; Raimam, Milena Pupo; Cardoso, Nério Aparecido; Albino, Ulisses Brigatto. |
| The aim of this study wasto determine the presence and influence of Arbuscular-mycorrhizal fungi (AMF) in a stand of Schizolobium amazonicum trees on Tocantina region, Pará State, Brazil. One year old trees, were evaluated in the field by a team that chose the 10 most developed and the 10 less developed individuals. Height, greater circumference of the stem and leaf number were measured for each tree. At the same time, rhizosphere soil samples were collected at the canopy projection. Samples were analyzed for organic matter content, CaCl2 pH and presence of hyphae, vesicles, arbuscules and spores in the fine roots. We carried out further soil AMF spores extraction by centrifugation in a sucrose solution which was used for inoculation of S. amazonicum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant growth; Forestry; Amazonian species; Microbiology Recursos Florestais; Microbiologia do solo Crescimento vegetal; Silvicultura; Espécies amazônicas; Microbiologia. |
| Ano: 2013 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/386 |
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| Chu,Elizabeth Ying. |
| With the objective of verifying the response of Euterpe oleracea seedlings to seven arbuscular mycorrhizal fungi species, an experimental trial was carried out under greenhouse conditions. Seeds of E. oleracea were sown in carbonized rice husk. Germinating seeds were initially transferred to plastic cups, containing fumigated Reddish Yellow Quartz Sand and inoculated with arbuscular mycorrhizal fungi. Two months later, seedlings were transferred to 2 kg black plastic bags, containing the same soil without fumigation. Plant growth and mineral nutrients were evaluated nine months after mycorrhizal inoculation. Differential effects were observed among the species tested, with Scutellispora gilmorei being the most effective ones in promoting growth and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant growth; Nutrient content; Infected root length. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000600013 |
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| Petter,Fabiano André; Madari,Beáta Emöke; Silva,Mellissa Ananias Soler da; Carneiro,Marco Aurélio Carbone; Carvalho,Márcia Thaís de Melo; Marimon Júnior,Ben Hur; Pacheco,Leandro Pereira. |
| The objective of this work was to evaluate the effect of biochar made from Eucalyptus on soil fertility, and on the yield and development of upland rice. The experiment was performed during two years in a randomized block design with four replicates, in a sandy loam Dystric Plinthosol. Four doses of NPK 05-25-15, annually distributed in stripes (0, 100, 200 and 300 kg ha-1), and four doses of biochar (0, 8, 16 and 32 Mg ha-1), applied once in the first year - alone or with NPK - were evaluated. In the first year, biochar positively affected soil fertility [total organic carbon (TOC), Ca, P, Al, H+Al, and pH], at 0-10 cm soil depth, and it was the only factor with significant effect on yield. In the second year, the effect of biochar diminished or was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochar; Macronutrients; Plant biomass; Plant growth; Soil acidity; Rice yield. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000500010 |
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| Registros recuperados: 51 | |
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