Availability of nutrients, productive properties, and quality of sunflower ( L.) seeds in acid soils amended with different molar ratios between Ca and Mg

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorRigon, João Paulo Gonsiorkiewicz
dc.creatorCapuani, Silvia
dc.creatorRossi, Rubiana Falopa
dc.creatorBüll, Leonardo Theodoro
dc.creatorFernandes, Dirceu Maximino
dc.date2016-04-01T18:46:36Z
dc.date2016-10-25T21:37:50Z
dc.date2016-04-01T18:46:36Z
dc.date2016-10-25T21:37:50Z
dc.date2015
dc.date.accessioned2017-04-06T10:22:55Z
dc.date.available2017-04-06T10:22:55Z
dc.identifierArchives of Agronomy and Soil Science, v. 61, n. 10, p. 1369-1380, 2015.
dc.identifier0365-0340
dc.identifierhttp://hdl.handle.net/11449/137635
dc.identifierhttp://acervodigital.unesp.br/handle/11449/137635
dc.identifier10.1080/03650340.2015.1008461
dc.identifier1346461670550428
dc.identifier1769192603163985
dc.identifierhttp://dx.doi.org/10.1080/03650340.2015.1008461
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/948156
dc.descriptionLiming is indispensable in acid soils for amending acidity; however, the technique may alter the cation balance in soil and, consequently, may limit the availability and uptake of nutrients. We aimed to evaluate different molar ratios between calcium (Ca) and magnesium (Mg) on the availability of soil nutrients and their influence on the productive properties of sunflower and seed quality. The experiment was carried out in a greenhouse under two types of contrasting soils and six molar combinations of CaCO3and MgCO3 in amendment of soil acidity to raise base saturation to 70%. After incubation, soil analysis was undertaken to verify the ratios obtained and nutrient availability. Morphological and production variables were analyzed at the end of the experiment, as well as accumulation of nutrients in the achenes and their physiological quality. In spite of equal base saturation between the types of soil, there were differences in the available contents of these cations. The increase in the Ca contents limited the Mg contents to the critical level of the sunflower. This result had a negative influence on the production properties of sunflower and physiological quality. In contrast, there was a compensation of the crop with greater accumulation of nutrients in the achenes under lower yield.
dc.languageeng
dc.relationArchives of Agronomy and Soil Science
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCalcium
dc.subjectMagnesium
dc.subjectCations
dc.subjectUptake
dc.subjectPhysiological quality
dc.titleAvailability of nutrients, productive properties, and quality of sunflower ( L.) seeds in acid soils amended with different molar ratios between Ca and Mg
dc.typeOtro


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