|
|
|
| Registros recuperados: 66 | |
|
| |
|
|
| Szareski,Vinícius Jardel; Carvalho,Ivan Ricardo; Kehl,Kassiana; Levien,Alexandre Moscarelli; Nardino,Maicon; Dellagostin,Simone Morgan; Demari,Gustavo Henrique; Lautenchleger,Francine; Villela,Francisco Amaral; Pedó,Tiago; Souza,Velci Queiróz de; Aumonde,Tiago Zanatta. |
| Abstract: The objective of this work was to evaluate the adaptability and multi-trait stability of wheat (Triticum aestivum) genotypes according to the phenotypic index of seed vigor (PIV). Thirty wheat genotypes were grown in seven environments in the state of Rio Grande do Sul, Brazil, during one crop season. In each environment, a randomized complete block design with three replicates was used. The PIV was elaborated from the following traits: first germination count, germination percentage, accelerated aging, and electrical conductivity. The evaluated phenotypic index makes it possible to define macroenvironments for the production of wheat seeds with high physiological potential and to understand the implications of the genotype x environment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Accelerated aging; AMMI; Electrical conductivity; Mixed models; Seed quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600727 |
| |
|
|
| Lorin,Higor E. F.; Costa,Mônica S. S. de M.; Chiarelotto,Maico; Santos,Francielly T. dos; Costa,Luiz A. de M.. |
| ABSTRACT The recovery of waste from the broiler production chain (BPC) is consistent with the principles of a circular economy. Besides turning waste into organic compost, its use as substrate for the production of vegetable seedlings further increases its economic value. However, it is necessary to adapt its characteristics to enable its use as substrate. To this end, the addition of boiler remnant charcoal wastes (BCW), another type of waste generated in the BPC, to the organic compost resulting from the composting of BPC waste with different bulking agents (BAs) was studied. The addition of BCW to agro-industrial compost reduced the electrical conductivity (EC) of substrates. Multiple linear regression showed that, of the 13 variables (physical,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrical conductivity; Circular economy; Easiness of removal of clod from tray; Seedling quality index; Salinity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000600753 |
| |
|
|
| Megda,Michele Xavier Vieira; Mariano,Eduardo; Leite,José Marcos; Megda,Marcio Mahmoud; Trivelin,Paulo Cesar Ocheuze. |
| Abstract: The objective of this work was to evaluate the effect of the application of ammonium chloride as a nitrogen source for sugarcane (Saccharum sp.) on the development of the crop’s shoot and roots during two consecutive cycles. The experiment was conducted on a Typic Hapludox in the first and second sugarcane ratoons. The treatments consisted of four N doses (50, 100, 150, and 200 kg ha-1) applied as ammonium chloride (NH4Cl), besides a control, without the application of N. The increase in the NH4Cl dose increased in up to three times soil electrical conductivity in the layer of 0.0-0.2 m, with a consequent increase in the concentration of chlorine in leaves. In the second cycle, the contents of chlorine increased in 1,900 mg kg-1 in the leaf with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum; Electrical conductivity; Nitrogen fertilization; Root system; Stalk productivity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102100 |
| |
|
|
| S. JUNIOR, EDVALDO B.; COELHO, E. F.; LIMA, L. W. F.; SANTANA, G. da S.; SANTOS, D. L.. |
| O objetivo do trabalho foi avaliar o efeito da irrigação com quatro diferentes níveis salinos nas variáveis de crescimento de quatro genótipos de bananeiras. O trabalho foi desenvolvido no campo experimental da Embrapa Mandioca e Fruticultura, no município de Cruz das Almas, BA. O experimento foi instalado em campo seguindo um delineamento inteiramente casualizado em esquema de parcelas subdividida com quatro níveis de salinidade na água de irrigação (0,5, 2,0, 3,0 e 4,0 dS m-1), quatro genótipos de bananeira (Prata Anã, PA 42-44, Princesa e Pacovan Ken) e três repetições. Foram analisadas as seguintes variáveis: altura de planta, diâmetro do pseudocaule e área foliar número de folhas. Houve diferença estatística em todas as variáveis analisadas de acordo... |
| Tipo: Parte de livro |
Palavras-chave: Sais; Irrigação; Banana; Condutividade elétrica; Propriedade fisico-quimica; Irrigation; Salts; Electrical conductivity. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1003997 |
| |
|
| |
|
| |
|
|
| Matthews,S.. |
| In comparisons of six seed lots of different F1 hybrid cultivars of cauliflower with similarly high laboratory germinations (above 90%) separation in germination was achieved after controlled deterioration (C.D.) at 24% moisture content (m.c.) and 45 0C for 24 hours. This measure of vigour was related to the position of the lots on the seed survival curve and was highly predictive of the longevity of the lots when stored at 15% m.c. and 20 0C for 12 and 16 weeks. When each seed lot was deteriorated at 24% m.c. for increasing times (from 0 to 36 hours) a reduction in the subsequent percentage germination was seen, which, using probit transformed percentages, was significantly and linearly related to the leakage of electrolytes into seed soak water over 24... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cauliflower; Controlled deterioration; Leakage; Electrical conductivity; Storage. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000500011 |
| |
|
|
| Fraga,Thiago Isquierdo; Carmona,Felipe de Campos; Anghinoni,Ibanor; Marcolin,Elio. |
| In the State of Rio Grande do Sul, Brazil, flooded rice fields using Patos Lagoon as the source of water for irrigation are subject to be damaged by salinity, since this source is bound to the sea on its southern end. The sensitivity of rice is variable during plant development, being higher in the seedling and reproductive periods. However, there is not enough information about the behavior of plants under salt stress during the course of its development, especially in the vegetative stage. This study evaluated the effect of different levels of salinity of irrigation water on the salinity of soil solution over time and on some plant attributes, during the vegetative stage of rice. The study was conducted in a greenhouse, where seeds of the variety IRGA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrical conductivity; Tillering; Vegetative growth; Oryza sativa L. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400005 |
| |
|
| |
|
| |
|
|
| Carmona,Felipe de Campos; Anghinoni,Ibanor; Holzschuh,Marquel Jonas; Andrighetti,Marcelo Hoerbe. |
| Salinity levels in soils of the Outer Coastal Plain of Rio Grande do Sul, Brazil, can be high, due to excess of Na in the irrigation water, evapotranspiration and soil development from marine sediments. The cultivation of irrigated rice could be an alternative, since ion uptake as well as leaching by the establishment of a water layer could mitigate the effects of soil salinity. This study aimed to evaluate the dynamics of basic cations in the solution of Albaqualf soils with different salinity levels growing irrigated rice. The plow layer contained exchangeable Na percentages (ESP) of 5.6, 9.0, 21.2 and 32.7 %. The plant stand, dry matter, Na, K and Ca + Mg uptake at full flowering and grain yield were evaluated. The levels of Na, K, Ca + Mg and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exchangeable sodium percentage; Potassium; Calcium; Magnesium; Electrical conductivity. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000600009 |
| |
|
|
| Heck,R. J.; Tiessen,H.; Santos,M. C.; Salcedo,I. H.; Alves,R. J. T.. |
| This study compares the chemical composition of the solution and exchange complex of soil in a 3-year-old irrigated vineyard (Vitis vinifera L., Red Globe cultivar) with that of adjacent clearing in the native hyperxerophyllic 'caatinga' vegetation. The soils are classified as Plinthic Eutrophic Red-Yellow Argisol; according to Soil Taxonomy they are isohyperthermic Plinthustalfs. Detailed physiographic characterization revealed an impermeable gravel and cobble covering the crystalline rocks; the relief of this layer was more undulating than the level surface. Significant higher concentrations of extractable Na, K, Mg and Ca were observed within the vineyard. Lower soil acidity, higher Ca/Mg ratios, as well as lower sodium adsorption and Na/K ratios... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vineyard; Physiography; Moisture content; Exchangeable cations; Electrical conductivity; Soluble cations; Sodicity; Acidity. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832002000100020 |
| |
|
| |
|
|
| ALVES, A. C.. |
| A caracterização da solução do solo é de fundamental importância para avaliar uma série de processos inerentes ao sistema solo-planta. Nesse sentido, pesquisas que comparem metodologias de extração da solução do solo e que, ao mesmo tempo, apresentem viabilidade prática e financeira são requeridas no meio científico. O objetivo deste estudo foi comparar a eficiência de diferentes métodos de extração da solução do solo em classes de solos que representam assembléias mineralógicas representativas do estado de Pernambuco. Foram avaliados os métodos de extração da solução do solo, centrifugação, cápsulas porosas e suspensões de relações solo: água (1:2; 1:5 e 1:10) em cinco classes de solos (Neossolo Regolítico (RR), Luvissolo Háplico (TX), Gleissolo Háplico... |
| Tipo: Teses |
Palavras-chave: Composição iônica; Solução do Solo; Mineralogia; Condutividade Eletrica; Mineralogy.; Soil solution; Electrical conductivity. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146081 |
| |
|
| |
|
|
| Novella,Manuel Benito; Andriolo,Jerônimo Luiz; Bisognin,Dilson Antônio; Cogo,Clarissa Melo; Bandinelli,Maurício Guerra. |
| The effect of the nutrient solution concentration on potato plant growth and minituber yield were determined in a sand closed hydroponic system. Minitubers and micropropagated plantlets of the cv. 'Macaca' were used. Treatments were five nutrient solution concentrations at electrical conductivities (EC) of 1.0 (T1), 2.2 (T2), 3.4 (T3), 4.7 (T4) and 5.8dS m-1 (T5). The split plot randomised experimental design was used with three replications. Plants from minitubers produced higher fresh and mean weight of minitubers, shoot dry mass and leaf area index than the micropropagated ones. However, higher dry mass of minitubers was found with micropropagated plantlets compared to minitubers. The concentration of the nutrient solution did not affect minituber... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Plantlets; Plant propagation; Electrical conductivity. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000600006 |
| |
|
| |
|
|
| TEIXEIRA, J. C.; SANTANA JUNIOR, E. B.; COELHO, E. F.; ANDRADE, T. P. DE; SANTOS, D. L. dos; OLIVEIRA, R. C. de. |
| A banana é uma fruta de grande importância no contexto mundial e o quarto alimento vegetal mais consumido no mundo. O objetivo do trabalho foi avaliar o crescimento de quatro diferentes genótipos de bananeira submetidos a diferentes níveis de salinidade na água de irrigação. O trabalho foi desenvolvido no campo experimental da Embrapa Mandioca e Fruticultura, no município de Cruz das Almas, BA. O experimento foi instalado em campo seguindo um delineamento inteiramente casualizado em esquema de parcelas subdividida com quatro níveis de salinidade na água de irrigação (0,8, 2,0, 3,0 e 4,0 dS m-1), quatro genótipos de bananeira (Prata Anã, PA 42-44, Princesa e Pacovan Ken) e três repetições. Foram analisadas as seguintes variáveis: altura de planta, diâmetro... |
| Tipo: Parte de livro |
Palavras-chave: Gotejamento; Musa spp.; Banana; Genótipo; Variação genética; Condutividade elétrica; Electrical conductivity; Genetic variation; Genotype. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1004003 |
| |
|
| |
| Registros recuperados: 66 | |
|
|
|
