FERTILIZANTE DE LIBERAÇÃO LENTA NO DESENVOLVIMENTO DE MUDAS DE <i> Anadenanthera peregrina </i> (L.) Speg. (ANGICO-VERMELHO) E <i> Schinus terebinthifolius </i> Raddi (AROEIRA-VERMELHA)

Abstract

RESUMOCom o objetivo de avaliar o desenvolvimento de duas espécies arbóreas nativas -Anadenanthera peregrina (angico-vermelho) e Schinus terebinthifolius (aroeira-vermelha) -submetidas a doses de fertilizante de liberação lenta na formulação 13-06-16, conduziu-se um experimento em viveiro utilizando uma mistura de matérias-primas com composto orgânico, vermiculita e Plantmax® para compor substrato base. O experimento foi conduzido no delineamento experimental inteiramente casualizado com seis tratamentos em quatro repetições. Os tratamentos foram: T1-0 kg (testemunha); T2-2 kg; T3-4 kg; T4-6 kg; T5-8 kg e T6-10 kg de fertilizante de liberação lenta por metro cúbico de substrato base. Avaliou-se aos 189 dias após a semeadura a altura total, diâmetro do colo, biomassa fresca da parte aérea, biomassa seca da parte aérea, biomassa seca da raiz, biomassa seca total, relação entre altura e diâmetro do colo e o índice de qualidade de Dickson. Os resultados evidenciam que a aplicação de fertilizante de liberação lenta leva a ganhos significativos de crescimento em ambas as espécies, sendo as melhores doses 6,68 a 5,54 kg m -3 para a espécie Anadenanthera peregrina, e 8,38 a 14,42 kg m -3 para Schinus terebinthifolius. Palavras-chave: viveiro; substrato florestal; fertilização de mudas; qualidade de mudas. ABSTRACTIn order to assess the development of two native species, Anadenanthera peregrina and Schinus terebinthifolius, submitted to doses of slow-release fertilizer formulation 13-06-16, an experiment was conducted in greenhouse using a mixture of raw materials with organic compost, vermiculite and plantmax to compose base substrate. The experiment was conducted in a completely randomized design with six treatments and four replications. The treatments were : T1-0 kg (control), T2-2 kg, 4 kg-T3 , T4-6 kg, T5-8 kg and T6 -10 kg slow release fertilizer per cubic meter of base substrate . Was evaluated at 189 days after sowing the total height, stem diameter, fresh weight of shoot, dry shoot biomass, root dry biomass, total biomass, the relationship between height and stem diameter and quality index Dickson. The results

Controlled-Release Fertilizer on Growth of Melanoxylon brauna Schott Seedlings

“…This trend was also reported by Rossa et al (2015), who verified that CRF application results in significant growth gains for cohoba tree (Anadenanthera peregrina) and Brazilian peppertree seedlings (Schinus terebinthifolius), with the best doses for cohoba tree between 5.54 and 6.68 kg m -3 and for Brazilian peppertree between 8.38 and 14.42 kg m -3 . Dutra et al (2016) concluded that yellow poinciana (Peltophorum dubium) seedlings responded to CRF, showing best growth and quality standard at doses between 5.4 and 8.2 g dm -3 .…”

Shading And Slow Release Fertilizer Effects On The Growth Characteristics Of Assai Seedlings (Euterpe oleracea)

“…Dutra et al (2016) did not detect an effect of slow release fertilizers on the DQI variable in Cassia-fistula, L. seedlings. Rossa et al (2014), Melo et al (2015) and Rossa et al (2015) detected positive effects of slow release fertilizer doses on Gallesia integrifolia, yellow passion fruit, red angico and red passion fruit seedlings, respectively. Cruz et al (2011) affirm that the DQI, as it expresses the quality of the seedlings, considers the robustness and balance of the biomass distribution in the seedling.…”

Controlled-release Fertilizer in the Production and Quality of Acacia mangium Seedlings

“…The use of controlled-release fertilizers is a nutritional contribution technology for forest species (Rossa et al, 2015a). These fertilizers include soluble compounds in their interior (NPK and some micronutrients) surrounded by a semipermeable membrane that, depending on the temperature and humidity of the substrate, dilates and contracts, which causes the release of nutrients to be controlled and made available gradually, thereby maintaining constant levels of the essential elements for the seedlings throughout the growth period (Bennett, 1996;José et al, 2009).…”