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| Registros recuperados: 138 | |
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| SILVA, D. J.. |
| Introdução; Aspectos gerais da nutrição: nitrogênio, fósforo, potássio, cálcio, magnésio, enxofre, boro, cobre, ferro, manganês, zinco, molibdênio, cloro; Avaliação do estado nutricional; Amostragem e análise de solo; Amostragem e análise de planta; Calagem; Adubação: adubação de plantio, adubação de crescimento; adubação de produção; Irrigação e fertirrigação. |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Videira; Nutrição mineral; Adubação de plantio; Uva; Solo; Nutrição; Calagem; Adubação; Irrigação; Fertirrigação; Grapes; Plant nutrition; Irrigation; Fertigation; Nitrogen. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1082017 |
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| Chopin, T; Floc'H, J; Bodeau, B; Penot, M. |
| Phosphorated nutrition of the red alga Chondrus crispus Stackh. is studied is two morphologically very dissimilar forms of the thallus. Phosphorus measurements, which were monthly carried out at different parts of the alga, showed first that the distribution of this element is not homogeneous along the thallus, and second that seasonal variations occur. It is suggested that the classical polymorphism of the species can be taken into account as concerns its physiology. Besides, from absorption and exsorption experiments which were performed with super(32)P as a tracer, it is shown that the high concentration factor of phosphorus in the alga as compared to the environmental seawater (up to 17.9 x 10 super(4)) can be explained as an effect of metabolic process. |
| Tipo: Text |
Palavras-chave: Chondrus crispus; Algae; Distribution; Metabolism; Seasonal variations; Food absorption; Phosphorus; Plant nutrition. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/acte-1175.pdf |
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| Martínez-Viveros,O; Jorquera,M.A; Crowley,D.E; Gajardo,G; Mora,M.L. |
| Rhizobacteria are capable of stimulating plant growth through a variety of mechanisms that include improvement of plant nutrition, production and regulation of phytohormones, and suppression of disease causing organisms. While considerable research has demonstrated their potential utility, the successful application of plant growth promoting rhizobacteria (PGPR) in the field has been limited by a lack of knowledge of ecological factors that determine their survival and activity in the plant rhizosphere. To be effective, PGPR must maintain a critical population density of active cells. Inoculation with PGPR strains can temporarily enhance the population size, but inoculants often have poor survival and compete with indigenous bacteria for available growth... |
| Tipo: Journal article |
Palavras-chave: Agricultural inoculant; Phytohormone; Phytopathogen biocontrol; Plant nutrition; Rhizosphere. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100006 |
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| Pereira, Kleane Targino Oliveira; Oliveira, Francisco de Assis de; Cavalcante, Antonio Lucieudo Gonçalves; Dantas, Renata de Paiva; Oliveira, Mychelle Karla Teixeira de; Costa, Jessilanne Plínia Barbosa de Medeiros. |
| O objetivo do presente trabalho foi avaliar a qualidade de mudas de moringa em função da posição das sementes no fruto e da concentração de nutrientes na solução de fertirrigação. Realizou-se um experimento seguindo o delineamento inteiramente casualizado, com os tratamentos arranjados em esquema fatorial 3 x 4, sendo três posições de sementes no fruto (basal, mediana e apical) e quatro doses de nutrientes (0, 50, 100 e 150% da dose padrão), com quatro repetições. Foram avaliados os seguintes parâmetros: altura (ALT), diâmetro do coleto (DC), número de folhas, matéria seca da parte aérea (MSPA), matéria seca do sistema radicular (MSSR) e matéria seca total, relação ALT/DC, MSPA/MSSR e índice de qualidade de Dickson. Os dados foram submetidos à análise de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Engenharia Florestal Produção de mudas Moringa oleifera; Nutrição vegetal; Silvicultura Moringa oleifera; Plant nutrition; Silviculture. |
| Ano: 2016 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1038 |
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| Costa,Claudio Hideo Martins da; Crusciol,Carlos Alexandre Costa; Ferrari Neto,Jayme; Castro,Gustavo Spadotti Amaral. |
| Abstract The objective of this work was to evaluate the long-term effects of the surface application of lime on soil fertility and on the mineral nutrition and grain yield of soybean, and of black oat and sorghum in crop succession. The experiment was carried out on a clayey Oxisol, in a randomized complete block design, with four replicates. Treatments consisted of lime the rates of 0, 1,000, 2,000, and 4,000 kg ha-1, applied in October 2002 and November 2004. Soil samples were collected at five soil layers, down to 0.60-m depth. Surface liming was effective in reducing soil acidity and increasing Ca2+ and Mg2+ contents in the subsurface. Moreover, it increased available phosphorus contents and soil organic matter in the long term (48 to 60 months after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop rotation; Long-term experiment; Plant nutrition; Soil fertility; Subsurface soil acidity; Yield components. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901633 |
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| Mourão Filho,Francisco de Assis Alves; Azevedo,João Carlos. |
| Diagnosis and Recommendation Integrated System (DRIS) applies nutrient ratios instead of the isolated concentration values of each nutrient in interpretation of tissue analysis. The objectives of this research were to establish adequate DRIS norms for 'Valencia' sweet orange irrigated commercial groves budded on three rootstocks and correlate indexes of nutrition balance with yield. Experiments were conducted in São Paulo State, Brazil. Rootstocks Rangpur lime, Caipira sweet orange, and Poncirus trifoliata, with more than six years old and yield above 40 ton ha-1 were utilized. Data referred to yield, tree spacing, rootstock and foliar concentrations of N, P, K, Ca, Mg, S, Fe, Mn, Cu, Zn, and B in non fruiting terminals for each grove were processed for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus; Foliar diagnosis; Nutrient balance; Plant nutrition. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000100012 |
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| Silva,Karina Gonçalves da; Ferreira,Mauricio Lamano; Silva,Emerson Alves da; Kanashiro,Shoey; Camargo,Plínio Barbosa de; Tavares,Armando Reis. |
| Abstract: The objective of this work was to evaluate if nitrogen use efficiency (NUE) indexes can elucidate functional differences in nutrient uptake between the root system and tank of epiphytic bromeliads. The bromeliads Guzmania lingulata and Vriesea 'Harmony' received fertilizers in their tanks or through their roots using modified Hoagland & Arnon solution, with 0.00, 2.62, or 5.34 mmol L-1 nitrogen, as urea. After 90 days, nitrogen contents in leaves and plant biomass were evaluated, and NUE indexes were calculated. Guzmania lingulata and V. 'Harmony' fertilized in their tanks with 5.34 mmol L-1 had the highest averages of nitrogen uptake efficiency and recovery efficiency; those fertilized with 2.62 mmol L-1 through their roots showed the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Guzmania lingulata; Vriesea; Bromeliaceae; Nutritional efficiency index; Plant nutrition; Root functionality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600703 |
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| Fuentes,Luis Felipe Garcia; Souza,Luiz Carlos Ferreira de; Serra,Ademar Pereira; Rech,Jerusa; Vitorino,Antonio Carlos Tadeu. |
| Abstract: The objective of this work was to evaluate corn agronomic traits in a cultivation subjected to different N rates, during the fall-winter (off-season) and spring-summer crop seasons, and N recovery from fertilizer. The experiment was set up in a randomized complete block design with four replicates, in a 5x2 factorial arrangement, with the following treatments: five N topdressing rates - 0, 30, 60, 90, and 120 kg ha-1 -, using urea as source; and two crop seasons, fall-winter and spring-summer. The following variables were determined: plant height, height of the first ear insertion, number of grains per ear, diameter and length of ear, 1,000-grain weight, N concentration in the leaves and grains, grain-protein concentration, grain yield, N... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; N-fertilizer management; Plant nutrition; Soil fertility; Soil-N supply. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001001158 |
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| Rosolem,Ciro Antonio; Silva,Rosemeire Helena da; Esteves,José Antonio de Fátima. |
| Cotton (Gossypium hirsutum) is known to have a high requirement for K and to be very sensitive to low soil pH. Most of K reaches plant roots by diffusion in the soil. As K interacts with Ca and Mg, liming can interfere in K movement in the soil, affecting eventually the plant nutrition. The objective of this work was to study the effect of dolomitic lime and 0, 15, 30, 45 and 60 g kg-1 of K on the supply of K to cotton roots. Cotton plants were grown up to 40 days in 5 L pots containing a Dark Red Latosol (Typic Haplusthox) with 68% and 16% of sand and clay, respectively. There was an increase in dry matter yields and in K accumulation due to K fertilization. Root interception of soil K was also increased by K application, but was not affected by lime.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; Mass; Diffusion; Liming materials; Roots; Growth; Plant nutrition. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000500012 |
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| Registros recuperados: 138 | |
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