Abstract
Moringa oleifera presents important medicinal properties, and its seeds are used to treat water for human consumption and wastewater. The aim of the present study was to analyze the initial growth of M. oleifera seedlings in enriched commercial substrate with differing doses of controlled release fertilizer. The experimental was designed in randomized blocks, with four repetitions of 16 seedlings each. The treatment used doses of controlled release fertilizer, with 0; 2; 4; 6; and 8 kg m-3 of commercial substrate. A hundred days after installing the experiment, the following characteristics were analyzed: height of the aerial part; diameter of the root collar; length; volume; and dry mass of the roots and aerial part. Additionally, the relation between the height of the aerial part and the diameter of the root collar and the Dickson quality index (DQI) were determined. The data was submitted to analysis of variance and to the Shapiro-Wilk test to verify the normality and regression. Controlled release fertilizer at a dose of 5.37 kg m-3 of substrate is recommended for M. oleifera seedling production.
Highlights
The species Moringa oleifera Lam. (Moringaceae) is typical to India and commonly found in tropical and subtropical regions (LEONE et al, 2015)
The controlled release fertilizer (CRF) had a significant effect on the initial growth of M. oleifera seedlings in terms of the diameter of the root collar (CD), total dry mass (TDM) dry mass of the aerial part (DMAP), Dickson quality index (DQI), and height of aerial part and diameter of the root collar ratio (H/CD) (Table 3)
It is noted in this study that the use of CRF was influential at the doses tested, generating quadratic models, in which optimal doses for the CD, DMAP, TDM and DQI variables in M. oleifera seedlings were found (5.98, 6.46, 4.82, 5.37 kg of CRF per m-3 of substrate)
Summary
The species Moringa oleifera Lam. (Moringaceae) is typical to India and commonly found in tropical and subtropical regions (LEONE et al, 2015). (Moringaceae) is typical to India and commonly found in tropical and subtropical regions (LEONE et al, 2015). It has high nutritional value and excellent medicinal properties, FLORESTA, Curitiba, PR, v. The use of this plant extract is justified to substitute aluminum sulfate, used as an industrial coagulant in developing countries (SÁNCHEZ-MARTÍN et al, 2012), reducing the cost of water treatment. Other uses of M. oleifera seeds reported in the literature include the production of biodiesel (PINTO et al, 2012) and the treatment of water for the dairy industry (VIEIRA et al, 2010)
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