RESUMO:Este trabalho teve por objetivo quantificar a produção de miniestacas por minicepas de Eucalyptus urophylla em relação às coletas de brotações e concentrações de solução nutritiva. As brotações originaram-se de minicepas seminais, cultivadas em vasos plásticos de 3,0 L com aberturas na parte inferior com substrato composto por areia, fração fina e fertirrigadas de solução nutritiva em três concentrações: 25, 75 e 100% sendo realizada 6 coletas ao longo do tempo. A produção de miniestacas foi conduzida a partir do delineamento em blocos casualizados com arranjo fatorial (3x6) e parcelas subdivididas no tempo, sendo os fatores constituídos por solução nutritiva (S1 -100%, S2 -75%, S3 -25%) e coleta de brotos (6 coletas), de acordo com a produtividade. A produção de miniestacas por metro quadrado ano (NM) variou significativamente em relação à solução nutritiva e as coletas de brotações e os resultados apresentaram oscilações ao longo das seis coletas. A solução de 100% e a 6ª coleta obtiveram a maior produção de NM.Palavras-chave: minijardim clonal, miniestaquia, propagação vegetativa.Productivity of mini stumps of Eucalyptus urophylla S. T. Blake on different nutritional solutions and collection of sprouts ABSTRACT: This work aimed to quantify the production of mini stakes by mini stumps of Eucalyptus urophylla in relation to the collection of sprouts and concentrations of nutritive solution. The sprouts were originated from seminal mini stumps, cultivated in plastic pots capable to store 3.0 L, with openings at the bottom, with substrate composed of sand, thin layer, and fertigated with nutritive solution in three concentrations: 25, 75 and 100%, with the accomplishment of 6 collections over time. The production of mini stakes was conducted from a randomized block design with factorial arrangement (3x6) and plots subdivided in the time, with the factors being formed by nutritive solution (S1 -100%, S2 -75%, S3 -25%) and collection of sprouts (6 collections), according to productivity. The annual production of mini stakes per square meter (NM) has significantly varied in relation to the nutritive solution, and the collections of sprouts and the results have shown oscillations over the six collections. The 100% solution and the 6th collection have obtained the greatest production of NM.
Agroforestry systems (AFSs) that have rubber tree as the main tree component are important productive systems in the Brazilian Amazon. This work aimed to evaluate carbon stock (CS) of tree biomass, litter and soil in rubber based AFSs in South-Western Amazon. The analytical observational study was carried out in Rolim de Moura (RO) from June 2018 to March 2019 and it consisted of five areas: three AFSs, a forest fragment (FL), and a pasture (PA). CS of tree biomass was determined using allometric equations, while litter and soil carbon stocks were performed through material collection and chemical analysis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.