Fertilization and containers in the seedlings production and post-planting survival of <i>Schizolobium parahyba</i>

Abstract

Fertilization in the production of forest seedlings can vary according to the substrate, container and fertilizer used in the nursery. Controlled release fertilizers (CRF) can be applied to reduce or even to eliminate the need for top-dress fertilization. The CRF doses can vary according to the container volume, considering the different amount of substrate available for seedlings in different containers. This study aimed to evaluate the growth of Schizolobium parahyba seedlings produced in plastic tubes of 110 and 280 cm 3 , with different doses of CRF (15-09-12) (0, 3, 6 e 12 kg m -3 ), as well as the seedlings survival and the initial growth after post-planting in the northern region of Rio de Janeiro state. The study was conducted using a factorial design 2 x 4 (tube volumes x CRF doses), with five repetitions for each treatment. As substrate it was used sewage sludge from urban areas, which was dried in open air beds. The growth of seedlings at nursery was evaluated at 93 days after the transplant, and the survival and initial growth at five and twelve months after planting. The Schizolobium parahyba seedlings showed higher growth in 280 cm 3 tubes and responded positively to the CRF application, where the most efficient dose was 8.3 kg cm 3 for this plastic tube. Twelve months after planting, seedlings from all treatments showed survival below 80%, being under the standard recommended for forest restoration. The mortality of seedlings occurred in consequence of five months of water deficit in a sandy clay loam soil. Considering only nursery data, the combination of 280 cm 3 plastic tubes, with the CRF dose of 8.3 kg cm 3 are recommended to produce Schizolobium parahyba seedlings. ResumoA fertilização na produção de mudas florestais é variável de acordo com o substrato, recipiente e o tipo de fertilizante utilizados. O fertilizante de liberação controlada (FLC) pode ser utilizado visando diminuir ou mesmo eliminar a necessidade de fertilização de cobertura. A dose de FLC aplicada pode variar de acordo com o volume do recipiente, considerando a quantidade de substrato disponível para as mudas em diferentes recipientes. Este trabalho teve como objetivo avaliar o crescimento de mudas de Schizolobium parahyba produzidas com tubetes de 110 e 280 cm 3 em doses crescentes de FLC (15-09-12) (0, 3, 6 e 12 kg m -3 ), bem como seu crescimento inicial e sobrevivência após plantio na região norte do estado do Rio de Janeiro. O estudo foi conduzido em arranjo fatorial 2 x 4 (recipientes x doses de FLC) com 5 repetições para cada tratamento. Como substrato foi utilizado lodo de esgoto de áreas urbanas, submetido a secagem em leitos ao ar livre. O crescimento das mudas no viveiro foi avaliado aos 93 dias após a repicagem e a I Engenheiro Florestal, MSc., Técnico de Silvicultura, Suzano S.A., Rodovia Aracruz x Barra, Km 25, CEP 29197-900, Aracruz (ES), Brasil. gerhard_ Cabreira, G. V.; Leles, P. S. S.; Alonso, J. M.; Abreu, A. H. M.; Arthur Junior, J. C.; Gusmão, A. V. V.; Lopes, N. F. 1645 Ci. Fl., Santa Maria, v. 29, n. 4,...

Interaction of Substrates and Inoculants for Samanea Saman (Jacq.) Merr Seedling Production

“…The highest growth of the seedling produced in the Sewage sludge substrate was probably due to higher N and P availability (Table 1). Similar results have been documented for by Delarmelina et al (2014), Gonçalves et al (2014), Cabreira et al (2019), Silva et al (2019) andLima Filho et al (2019) for Ateleia glazioviana, Sesbania virgata, Schizolobium parahyba, Luehea divaricata, and Ceiba speciosa, respectively.…”

Seedling quality of Agonandra brasiliensis in response to different Osmocote® doses and recipient volumes

“…The accumulated initial growth of A. brasiliensis seedlings 240 days after transplant (DAT) (Figure 1) corroborates studies on growth of Araucaria angustifolia and Ocotea odorifera seedlings (Rossa et al, 2011) and Schizolobium parahyba seedlings (Cabreira et al, 2019). In these studies, the use of controlled release fertilizer (CRF) at doses of 6.0 g L -1 and 8.3 g L -1 , respectively accelerated seedlings growth.…”

Remineralizer and controlled-release fertilizer increase Mimosa scabrella Benth. seedlings growth

“…According to the remineralizer producer, the batch of remineralizer used in our experiment had the following nutritional contents: 1.54% Al; B < 10 ppm; 1.22% Ca; 4.32% Fe; 0.11% 66 studies indicate that the use of controlledrelease fertilizers (CRF) ensures efficiency in nutrients availability throughout seedling production process, reducing losses due to leaching or damage due to excess of nutrients in substrates (Stüpp et al, 2015;Van Eerd et al, 2018;Cabreira et al, 2019). In addition, the use of CRF in seedlings production demonstrates a balance between plant physiological demands, according to the availability of nutrients (Santos et al, 2020;Cabreira et al, 2019;Brito et al, 2018). Regarding M. scabrella, studies indicate high salinity resistance (Avrella et al, 2019a) and a positive response to fertilization with CRF (Stüpp et al, 2015).…”