Características físicas e químicas de substratos para produção de mudas de Ilex paraguariensis St. Hil.

Wendling, Ivar; Guastala, Daniel; Dedecek, Renato Antônio

doi:10.1590/s0100-67622007000200003

Cited by 51 publications

(66 citation statements)

References 5 publications

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“…A good index of aggregation is an excellent parameter of substrate quality for seedling production, favoring when performing activities in nursery and planting in field, thereby avoiding disintegration of formed root system (Wendling et al 2007). Results illustrate positive relationship between electrical conductivity and biomass accumulation (table 4).…”

Section: Discussionmentioning

confidence: 93%

“…However, this substrate was not the most suitable for Gleditschia amorphoides (Bortolini et al 2012), Eucalyptus urophylla x E. grandis (Rocha et al 2013) and E. grandis (Oliveira et al 2008) seedlings production. Different results observed refer to variations in physical and chemical properties of substrates, which is directly connected to preparation form, particularly decomposition time (Wendling et al 2007). This variation has a direct effect on plant growth.…”

Section: Discussionmentioning

confidence: 96%

“…Destructive analyses (shoot and root dry mass -48 hours in incubator at 65 °C, or until the material reached constant mass) were performed on five plants per repetition. In the same way, easiness of removal from the container, and roots aggregation of the substrate, following the methodology described by Wendling et al (2007). From the data collected for height, diameter, shoot and root dry biomass, morphological indices were calculated in relation to height and stem diameter (H/SD) and shoot dry mass and root dry mass relationship (SDB/RDB).…”

Section: Methodsmentioning

confidence: 99%

“…Seedling quality can be evaluated by measuring shoot height, stem diameter, root development, stem lignification and genetic material (Gomes et al 2002, Figueiredo et al 2011. Qualitative variables may be used to assess the quality of the root system, such as ease of removal from containers and aggregation of roots to substrate (Wendling et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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Ranking of substrates based on Piptadenia gonoacantha morphological parameters

Kratz

Wendling²,

Stuepp

et al. 2016

Bosque (Valdivia)

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SUMMARYThe definition of best substrates is often difficult due to variability of results observed in different measured variables. Therefore, we defined the best substrates for Piptadenia gonoacantha seedlings production through ranking, taking into account the relative importance of each variable in seedlings quality. In this regard, 13 substrates were formulated, composed of carbonized rice husk in different grain size, coconut fiber and two commercial substrates, pine bark and vermiculite base, all of which had their physical and chemical properties evaluated. Direct seeding was held in containers of 115 cm³, remaining for 90 days in a greenhouse and 30 days in a hardening area with full sunlight. After 120 days, an assessment of height, stem diameter, shoot dry mass, root dry mass, ease of container removal, and aggregation of roots to substrate was performed. As a result, we found higher seedling growth in substrates composed of pure components, which were based on different rice husk grain size. Addition of coconut fiber provided seedlings with lower quality. Pine bark-based commercial substrates occupied the sixth and 12 th positions in substrates ranking classification.Key words: pau-jacaré, seedling production, forest seedlings quality, agricultural residues, silviculture. RESUMENLa definición del mejor sustrato es a menudo difícil debido a la variabilidad de los resultados observados en las diferentes variables medidas. Basado en esto, el objetivo fue definir los mejores sustratos para la producción de plántulas de Piptadenia gonoacantha por medio de la clasificación, teniendo en cuenta la importancia relativa de cada variable en la calidad de las plantas. Para este fin, se formularon 13 sustratos a base de cáscara de arroz carbonizado en diferentes tamaños de grano, fibra de coco y corteza de pino compostada, que tenían sus propiedades físicas y químicas evaluadas. Se realizó siembra directa en tubos de 115 cm³, permaneciendo durante 90 días en invernadero de vidrio y 30 días en zona de rustificación a pleno sol. Después de 120 días, se evaluaron la altura, el diámetro del tallo, la biomasa seca aérea, la biomasa seca de las raíces, la facilidad de extracción desde el contenedor y la agregación de las raíces en el sustrato. Como resultado, hay un mayor crecimiento de las plántulas en sustratos compuestos por componentes puros a base de diferentes tamaños de grano de cáscara de arroz. La adición de fibra de coco proporcionó una producción de plántulas con calidad inferior. Los sustratos comerciales basados en corteza de pino ocuparon la posición de sexto y duodécimo en la clasificación de los sustratos.Palabras clave: pau-jacaré, producción de plántulas, calidad de plántulas forestales, residuos agrícolas, silvicultura.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 96%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ranking of substrates based on Piptadenia gonoacantha morphological parameters

Kratz

Wendling²,

Stuepp

et al. 2016

Bosque (Valdivia)

Self Cite

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“…Wendling et al (2007) used a scale of 0 to 10 to assess the production of Ilex paraguariensis seedlings in plastic tubes and found greater survival capacity of these plants in the field at values closer to 10. The definition of basic standards for nondestructive evaluation methods before plants are removed from nurseries can be an effective tool to qualify the propagation of plant forest species (Silva et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Quality of clonal plants of Piptocarpha angustifolia in different renewable substrates and seasons of the year

Stuepp

Wendling

Koehler

et al. 2016

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effect of different compositions of renewable substrates and seasons of the year on the quality of Piptocarpha angustifolia clonal plants. The experiment was carried out in a completely randomized design in a 4x6 factorial arrangement (four seasons x six substrate compositions). The analyzed substrates were: S1, commercial substrate with pine bark and coconut fiber base (CF); S2, carbonized rice husk (CRH); S3, fibrous and grainy CF; S4, 50% CF and 50% CRH; S5, 30% CF and 70% CRH; and S6, 70% CF and 30% CRH. Minicuttings of 8±1 cm were planted in tubes of 110 cm 3 and placed in a greenhouse, during the four seasons of the year. The evaluated variables were: survival and number of roots at 70 days; survival and emission of shoots at 100 days; rooting, shoot height, stem diameter, and their ratios; easiness of removal from tubes; aggregation to the substrate; and multiplication rate at 130 days. The highest CRH/CF ratio favored the development of better-quality plants, and S5 was the most adequate substrate. Spring is more favorable to the survival and quality of cuttings, and, together with summer, favors the highest multiplication rates. The S5 substrate has better physical and chemical quality and improves P. angustifolia clonal plants.Index terms: agro-industrial residues, clonal forestry, forest plant quality, production of minicuttings, "vassourão-branco". Qualidade de mudas clonais de Piptocarpha angustifolia em diferentes substratos renováveis e estações do anoResumo -O objetivo deste trabalho foi avaliar o efeito de diferentes composições de substratos renováveis e estações do ano na qualidade de mudas clonais de Piptocarpha angustifolia. O experimento foi conduzido em delineamento inteiramente casualizado, em arranjo fatorial 4x6 (quatro estações do ano x seis composições de substratos). Os substratos avaliados foram: S1, substrato comercial à base de casca de pinus e fibra de coco (FC); S2, casca de arroz carbonizada (CAC); S3, FC fibrosa e granulada; S4, 50% FC e 50% CAC; S5, 30% FC e 70% CAC; e S6, 70% FC e 30% CAC. Miniestacas de 8±1 cm foram plantadas em tubetes de 110 cm 3 e acondicionadas em casa de vegetação, nas quatro estações do ano. Avaliaram-se as variáveis: sobrevivência e número de raízes aos 70 dias; sobrevivência e emissão de brotos aos 100 dias; enraizamento, altura da parte aérea, diâmetro do coleto e suas relações; facilidade de retirada dos tubetes; agregação ao substrato; e taxa de multiplicação aos 130 dias. A maior relação CAC/FC favoreceu o crescimento de mudas com melhor qualidade, e S5 foi o substrato mais adequado. A primavera é mais favorável à sobrevivência e à qualidade das mudas e, juntamente com o verão, favorece as maiores taxas de multiplicação. O substrato S5 apresenta melhor qualidade física e química e proporciona melhores mudas clonais de P. angustifolia.Termos para indexação: resíduos agroindustriais, silvicultura clonal, qualidade de mudas florestais, miniestaquia, vassourão-branco.

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