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| De Conti,Lessandro; Ceretta,Carlos Alberto; Ferreira,Paulo Ademar Avelar; Lorensini,Felipe; Lourenzi,Cledimar Rogério; Vidal,Renan Fagan; Tassinari,Adriele; Brunetto,Gustavo. |
| The application of pig slurry rates and plant cultivation can modify the soil phosphorus (P) content and distribution of chemical species in solution. The purpose of this study was to evaluate the total P, available P and P in solution, and the distribution of chemical P species in solution, in a soil under longstanding pig slurry applications and crop cultivation. The study was carried out in soil columns with undisturbed structure, collected in an experiment conducted for eight years in the experimental unit of the Universidade Federal de Santa Maria (UFSM), Santa Maria (RS). The soil was an Argissolo Vermelho distrófico arênico (Typic Hapludalf), subjected to applications of 0, 20, 40, and 80 m3 ha-1 pig slurry. Soil samples were collected from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic wastes; Soil solution; Chemical speciation; Visual Minteq. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000300774 |
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| Freitas,Lucas B. de; Fernandes,Dirceu M.; Maia,Suelen C. M.; Moniz,Arianne; Mazziero,Beatriz G.; Steiner,Fábio. |
| ABSTRACT The aluminum source to produce toxicity in upland rice in nutrient solution experiments is not yet well established, althought the aluminum potassium sulfate has been utilized source to produce aluminum toxicity. However, in recent studies have used aluminum chloride. The aim of this study was to evaluate the capacity of aluminum sources and doses to produce toxicity in upland rice plants grown in nutrient solution. The experiment was arranged in a block randomized design, in a 2 x 5 factorial scheme and four repetitions. The treatments were two aluminum sources (aluminum potassium sulfate - AlK(SO4)2.12H2O and aluminum chloride - AlCl3.6H2O) and five aluminum doses in nutrient solution (0, 370, 740, 1100 and 1480 μmol L-1). The experiment was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Ionic activity; Visual Minteq; Root length. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700511 |
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