The objective of this work was to evaluate the initial growth of Bauhinia variegata L. when inoculated and fertilized with different proportions of organic compost. The experiment was performed in greenhouse in a completely random factorial (2 x 5) + 1 design, with 9 replicates, constituted by the presence or absence of inoculation, five proportions of organic compost:soil (0:100, 20:40, 40:60, 60:40 and 80:20; v/v) and one additional treatment with chemical fertilization without inoculation. Ninety days after sowing, the plant height, stem diameter, number of leaves, radicular length, dry mass of the aerial portion, dry mass of roots, total dry mass, Dicksosn's quality index (IQD), contents of nitrogen and carbon and the C/N ratio of the dry mass of the aerial portion, were evaluated. The inoculation with diazotrophic bacteria stimulated growth in height, stem height/diameter ratio, dry mass of the aerial portion, dry mass of roots, total dry mass and the foliar contents of nitrogen and carbon in seedlings of B. variegata L. Seedlings grown using organic compost showed better development when compared to seedlings grown only in soil with or without chemical fertilization. Seedlings grown with formulated substrate at a proportion of 16:84 (organic compost:soil + inoculation) exhibited higher IQD, therefore, this constitutes the recommended proportion for production of B.variegata L. seedlings.
A utilização de resíduos orgânicos agropecuários e agroindustriais para compor os substratos de cultivo pode ser uma alternativa viável para a produção de mudas de qualidade. Diante disso, objetivou-se avaliar o efeito de proporções e resíduos orgânicos na formulação de substratos para a produção de mudas de Cassia grandis L. f. O experimento foi conduzido em casa de vegetação, sendo disposto em delineamento experimental inteiramente casualizado em esquema fatorial (2 x 5), com oito repetições, constituídos com dois tipos de resíduos (resíduo de fibras de Agave sisalana e o composto orgânico de poda de árvore e esterco bovino e caprino), combinados com Neossolo Quartzarênico e homogeneizados em cinco proporções resíduo:solo (0:100; 20:80; 40:60; 60:40; 80:20; v/v). Após 90 dias da semeadura, avaliaram-se: altura da planta, diâmetro do colo, número de folhas, comprimento da raiz, massa seca da parte aérea, raiz e total, relação entre altura e diâmetro do caule, relação altura e massa seca da parte aérea, relação massa seca da parte aérea e massa seca da raiz e o Índice de Qualidade de Dickson. O uso de substratos constituídos por proporções de resíduo da extração de fibras de Agave sisalana e o composto orgânico de poda de árvore acrescido de esterco bovino e caprino acondicionados a Neossolo Quartzarênico não promovem efeito no crescimento inicial de Cassia grandis L. f. As mudas de Cassia grandis L. f. cultivadas em substrato constituído apenas com Neossolo Quartzarênico apresentam maior Índice de Qualidade de Dickson.
The addition of adequate proportions of organic residues to formulate substrates with soil, render positive results on germination and seedling growth by providing benefits to the physical and chemical attributes of the soil. Determining an adequate proportion of such residues is essential to obtain seedlings exhibiting morphophysiological quality. This study aims to evaluate seed emergence and the development of Caesalpinia pulcherrima (L.) Swartz and Cassia grandis L. f. seedlings in organic substrates. The experiment was set in a completely randomized design arranged in 2 x 3 x 5 factorial scheme, consisting of two soil classes (Oxisol and Entisol), three types of organic substrate (COP (organic compost from tree pruning + cattle and goat manure), CLU (urban waste compost), RES (residue from the extraction of sisal fiber) and five percentages of organic residues (0, 20, 40, 60, 80). The percentage of emergence and emergence speed of seeds, plant height, number of leaves, root length and dry mass were determined. The species showed better results for these variables when adding organic residues to the substrate. The addition of 80% COP or CLU to the substrate provided higher mean values for percentage of emergence in seeds of Caesalpinia pulcherrima, and the substrate constituted by only soil provided higher dry mass in seedlings of this species. The combination of 50% COP and 50% soil (Oxisol and Entisol) resulted in higher means for the percentage of seed emergence, velocity of emergence and biomass production in Cassia grandis L. f. seedlings.
Elaborado por Maurício Amormino Júnior -CRB6/2422O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. 2019 Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.
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.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.