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| Chica Toro,Faber de Jesús; Garzón-González,Jorge M.. |
| Abstract The aim of this study focused on the construction of the absorption and extraction curves under an aeroponic system for White chrysanthemum cv. Atlantis White, and therefore, propose the periods of maximum and minimum nutrient accumulation from aboveground, root and total biomass. Vegetative cycle of the plant, measured from the day after transplantation (dat) to aeroponic system, and the first day of court lasted 49 days. Evaluations were carried out each week on plants, in absolute competition. For the average aboveground biomass, three replicates were recorded. To obtain total root biomass only one sample, was measured. Therefore, total biomass in average, had achieved 130.9313 g.plant-1, where 72.26% (94.163 g) corresponded to the aboveground... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macronutrients; Nutrient balance (plants); Nutritional status; Ornamental species; Plant development stage; Plant nutrition; Plant soil relations. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100086 |
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| Lima,Magda Aparecida de; Pazianotto,Ricardo Antonio Almeida; Villela,Omar Vieira; Paraíba,Lourival Costa. |
| ABSTRACT: This study aimed to investigate the diurnal variation of methane (CH4) emission in a flooded-irrigated rice field at different stages of the plant development under tropical climate in three growing seasons, in order to determine the most appropriate time for gas sampling in the Brazilian Southeast region. It aimed also to verify correlations between CH4 flux and air, water and soil temperatures, and solar radiation. The CH4 emissions were measured every 3-hour interval on specific days in different development stages of the flooded rice in the Experiment Station of the Agência Paulista de Tecnologia dos Agronegócios (APTA), Pólo Regional Vale do Paraíba, at Pindamonhangaba, State of São Paulo (22°55’ S, 45°30’ W), Brazil. Different CH4 emission... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flooded rice; Methane flux; Plant development stage; Activation energy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400251 |
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