Características do resíduo de mineração de areia como componente de substratos para a produção de mudas de pupunheira (Bactris Gasipaes Kunth)

García, Valéria Augusta; Modolo, Valéria Aparecida; Lagôa, Ana Maria Magalhães Andrade; Nomura, Edson Shigueaki; Saes, Luis Alberto

doi:10.1590/s0100-67622011000400003

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…However, Fermino and Kämpf (2012) report that vermiculite is a widely used substrate because its physical characteristics such as porosity, aeration and water retention are favorable to root development. Garcia et al (2011) based on other literature, commented that the ideal dry density for vegetable growing substrates is between 400 to 500 kg m -3 , therefore, this characteristic may have been one of the reasons that affected the development of T. stans seedlings mostly in the sand, because the commercial substrates, with the exception of SC2, presented density values below the proposed in the literature.…”

Section: Resultsmentioning

confidence: 96%

Sowing time and substrate in the production of ipê-mirim seedlings

et al. 2022

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Tecoma stans is popularly known as ipê-mirim in Brazil. This species belongs to the Bignoniaceae family and it is native to Americas and Antilles, where it is widely used in landscaping as urban tree. The seedlings are produced from seeds and there are several factors that influences its development, such as the sowing time and the substrate. This work aimed to understand the effect of the sowing time and substrates on the production of Tecoma stans seedlings. The experiments were carried out in a nursery. The experimental design was completely randomized. The substrates were arranged in a 2 × 6 factorial scheme, two sowing times (autumn and spring) and six commercial substrates (SC1; SC2; SC3; SC4; sand and vermiculite) under four replicates and ten seedlings per plot. The means were compared to each other using the Tukey test (p < 0.05). There was a significant difference between the seasons of the year, showing that the percentage of emergence was higher in spring (89%). The seedlings of Tecoma stans were shown to be nutrient-dependent both in the emergence of the seedling and in the subsequent development of the seedlings, since the highest averages of the studied characteristics were obtained in the commercial substrates, as they have nutrients in their composition, with greater emphasis on SC1.

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Section: Resultsmentioning

confidence: 96%

Sowing time and substrate in the production of ipê-mirim seedlings

et al. 2022

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“…Utilizando-se resíduo de mineração de areia, misturado à casca de arroz carbonizada, para desenvolvimento de mudas de pupunha (Bactris gasipaes), verificou-se que a maior proporção de casca de arroz favoreceu o decréscimo da densidade e a elevação da porosidade total, proporcionando menor microporosidade e maior macroporosidade (Garcia et al, 2011). Tratando-se de materiais de origem orgânica, como os deste estudo, o comportamento de algumas propriedades físicas apresenta relação mais estreita com a densidade, quando se compara com materiais de origem mineral.…”

Section: Resultsunclassified

Desenvolvimento inicial de mudas de Butia odorata (Barb. Rodr.) Noblick cultivadas em recipientes

2014

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Recebido para publicação em 21/01/2013 e aprovado em 25/02/2014. 1 Este trabalho é parte da tese de doutorado do primeiro autor, realizada com apoio financeiro da FAPERGS e do CNPq. 2 Butia odorata (Barb.Rodr.) Noblick (butiazeiro) é uma palmeira nativa do sul do Brasil, com grande demanda para usos ornamental e agroindustrial. O objetivo deste estudo foi avaliar o desenvolvimento inicial de mudas de butiazeiro, em recipientes com diferentes composições de substratos. O experimento foi desenvolvido em casa de vegetação sem controle de temperatura e umidade. Foram utilizadas mudas com 60 dias após a germinação, e avaliados os substratos, em cinco proporções, dos componentes casca de arroz carbonizada e casca de pinus. Em etapa posterior, monitorou-se o efeito do pH do substrato no desenvolvimento das mudas mantidas nos mesmos recipientes e tratamentos. Para tanto, as plantas foram distribuídas em igual número e representação dos tratamentos, em quatro grupos, com quatro níveis de pH do substrato (4,0; 4,9; 5,8 e 6,7). Noventa dias após o início da primeira etapa, e 161 dias após o início da segunda, foram avaliados o desenvolvimento das plantas, a condutividade elétrica e o pH dos substratos. Na primeira etapa, constatou-se diferença entre os tratamentos somente para altura das plantas e pH do substrato, ambas relacionadas diretamente com a proporção de casca de pinus na formulação. Na segunda etapa, a composição do substrato foi determinante para o maior desenvolvimento das mudas. Somente o número de folhas não apresentou diferença significativa entre os tratamentos. Contudo, para todas as variáveis, a presença de casca de pinus, mesmo em baixa proporção, foi suficiente para favorecer o desenvolvimento vegetativo. Palavras Initial development of Butia odorata (Barb. Rodr.) Noblick seedlings grown in containersButia odorata(Barb.Rodr.) Noblick(pindo palm) is a palm tree native from southern Brazil, with a great demand for ornamental and agroindustry use. The objective of this study was to test the initial development of pindo palm seedlings in different substrate compositions inside containers. The experiment was conducted in a greenhouse without temperature or humidity control. It was used seedlings at 60 th day after germination, and substrates were tested in five proportions of carbonized rice husks and pine bark. After that, the effect of pH of the substrates was monitored on the growth of plants maintained in the same containers and treatments. Plants were distributed in equal number and representation of treatments in four groups with four levels of pH in the substrate (4.0; 4.9; 5.8 and 6.7). Ninety days after the beginning of the first stage and 161 days after the beginning of the second, the plants growth and the electrical conductivity and pH of the substrates were measured. Diference among treatments was found in the first state only for plant height and pH of the substrate, both directly related to the proportion of pine

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“…Solid wastes are constantly produced along the year, and their final destination is the discarding at locations near to the peach palm heart processing, which occupies areas that could be used for own industrial activity, agriculture or either used for environmental conservation (Garcia, Modolo, Lagôa, Nomura, & Sáes, 2011).…”

Section: Introductionmentioning

confidence: 99%

In natura residues from peach palm heart industry for ruminant feed

Moraes

Reis

Fuzitani

et al. 2022

Acta Sci. Anim. Sci.

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Palm heart processing generates a large amount of residues like leaves, sheath and stems that have potential for ruminant feeding. This study aimed to evaluate the effect of in natura peach palm heart (Bactris gasipaes Khunt.) residues on performance, dry matter (DM) digestibility and intake of ruminants. External sheath was the most suitable residue for sheep, cattle and buffaloes feeding, although sheep presented rejection of 43.5 g kg-1. Thereby, assays of apparent and in vitro dry matter digestibility were done under four feeding treatments, which were the exclusive peach palm sheath, and that one mixed with residues of banana and rice, besides citrus pulp. The experiment was carried out under randomized complete design, with five replications. Greater DM intake (p < 0.05) were observed in animals fed with peach palm sheath mixed with rice (1.12 kg day-1) and mixed with citrus pulp (0.91 kg day-1), however there were no difference among treatments regarding the sheep final weight (p > 0.05). Cattle and buffaloes accept different types of peach palm residues, unlike sheep that present a low rejecting for them. Citrus pulp and rice residue raise the roughage quality. Peach palm residues can be an alternative roughage source to feed ruminants.

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Características do resíduo de mineração de areia como componente de substratos para a produção de mudas de pupunheira (Bactris Gasipaes Kunth)

Cited by 3 publications

References 12 publications

Sowing time and substrate in the production of ipê-mirim seedlings

Sowing time and substrate in the production of ipê-mirim seedlings

Desenvolvimento inicial de mudas de Butia odorata (Barb. Rodr.) Noblick cultivadas em recipientes

In natura residues from peach palm heart industry for ruminant feed

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