Substratos no desenvolvimento inicial de quatro cultivares de pessegueiro e uma nectarineira

Júnior, Américo Wagner; Negreiros, Jacson Rondinelli da Silva; Alexandre, Rodrigo Sobreira; Pimentel, Leonardo Duarte; Morgado, Marcos Antônio Dell'Orto; Bruckner, Claudio Horst

doi:10.1590/s1413-70542008000400045

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The term substrate is used for every solid material, differently from soil, and may be natural, synthetic (phenolic foam, rockwool), residual (manure, bagasse, cotton fibers), mineral (perlite and vermiculite) or organic (peat, decomposed bark, coconut fiber) (WAGNER JÚNIOR et al, 2008). Such material placed in a container in its pure form or blended allows the development of the root system, thus playing a supportive role for plants (ABAD;NOGUEIRA, 1998;MULLER et al, 2000); besides, such material is free from phytopathogenic microorganisms and presents suitable nutritional and physical characteristics (GHINI, 2004).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) Seedlings

Báron¹,

Ferreira²,

Boaro³

et al. 2011

Rev. Bras. Frutic.

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-Choosing a substrate is the determinant factor for the seedling producer; thus, the aim of this study was to evaluate the effect of different types of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) seedlings. The experiment was carried out in a greenhouse and the experimental design was in randomized blocks, with three treatments and five replicates of 72 seeds per plot. The treatments consisted of the following substrates: coconut fiber, vermiculite and Plantmax ® Citrus. The number of emerged seedlings was weekly counted for 105 days. Data regarding seedling height were obtained, and the emergence velocity index and mean time, besides total emergence percentage and that over time were calculated. Results from total mean emergence percentage, seedling height, emergence velocity index (EVI), and mean emergence time (MET) were subjected to analysis of variance and means were compared by the Tukey's test at 5% significance. The curves concerning the emergence percentage over time were fit by the logistic growth equation for each treatment and the means of each parameter (A, B, C) were compared by the Duncan's test at 5% significance. The substrates vermiculite led to the highest values of emergence percentage differing from the PlantMax ® Citrus, but not of the coconut fiber, however the vermiculite promoted seedling height in a shorter time; therefore, this substrate is recommended for the initial development of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) seedlings.

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Section: Introductionmentioning

confidence: 99%

Evaluation of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) Seedlings

Báron¹,

Ferreira²,

Boaro³

et al. 2011

Rev. Bras. Frutic.

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Emergência de plântulas de porta-enxertos de pessegueiro submetidos a diferentes períodos de estratificação

et al. 2013

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* RESUMO -Objetivou-se com este trabalho, avaliar a germinação e o desenvolvimento de plantas oriundas de duas cultivares de pessegueiro 'Capdeboscq' e 'Okinawa' sob diferentes períodos de armazenamento, em viveiro comercial da empresa Frutplan Mudas Ltda, em Pelotas -RS, no período de maio a dezembro de 2009. Os caroços das duas cultivares foram armazenados em embalagens de papel por um período de 120 dias, sendo realizados os seguintes procedimentos: 10 dias de temperatura ambiente + 110 dias de frio; 40 dias de temperatura ambiente + 80 dias de frio; 70 dias de temperatura ambiente + 50 dias de frio; 100 dias de temperatura ambiente + 20 dias de frio e 120 dias de temperatura ambiente. Utilizando câmara fria programada para 6 ± 2 °C. O experimento foi conduzido em blocos casualizados, com quatro repetições e 25 sementes por parcela, no arranjo fatorial 2x5 (duas cultivares e cinco períodos de estratificação). As variáveis analisadas foram: porcentagem de plântulas emergidas, altura das plantas, diâmetro do tronco medido a 10 cm do colo, índice de velocidade de emergência em campo (IVEC) e dias para obtenção de 70% de emergência. A emergência da cv. Okinawa foi próximo a zero, com isto não foi considerada para avaliação de plântulas. Para a cv. Capdeboscq verificou-se diferenças significativas apenas para a variável dias para obtenção de 70% de emergência de plântulas, 112 a 123 dias, exceto para o tratamento com maior horas de frio que não atingiu os 70% de emergência. Conclui-se que os períodos de estratificação e frio não se mostraram vantajosos para obtenção de porta-enxertos de pessegueiro destas cultivares nas condições em que foi conduzido o experimento.Palavras-chave: Pessegueiro. Armazenamento. Germinação. ABSTRACT -The objective of this study was to evaluate the germination and development of plants from two cultivars of the peach, 'Capdeboscq' and 'Okinawa', for different periods of storage, at the commercial nursery of the company Frutplan Mudas Ltda., in Pelotas, Rio Grande do Sul, from May to December of 2009. The kernels of both cultivars were stored in paper wrappings for a period of 120 days, with the following procedures being carried out: 10 days at room temperature + 110 days of low temperature, 40 days at room temperature + 80 days of low temperature, 70 days at room temperature + 50 days of low temperature, 100 days at room temperature + 20 days of low temperature, and 120 days at room temperature, using a cold room programmed for 6 ± 2 °C. The experiment was carried out in a randomized block design, with four replications and 25 seeds per plot, in a 5x2 factorial layout (two cultivars and five periods of stratification). The variables analyzed were: the percentage of seedling emergence; plant height; trunk diameter measured at 10 cm from the soil, speed of emergence in the field (SEF) and days taken to reach 70% emergence. The emergence of cv. Okinawa was close to zero and therefore it was not considered when evaluating the seedlings. For the cv. Capdeboscq, significant differences were ...

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Substratos no desenvolvimento inicial de quatro cultivares de pessegueiro e uma nectarineira

Cited by 2 publications

References 7 publications

Evaluation of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) Seedlings

Evaluation of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) Seedlings

Emergência de plântulas de porta-enxertos de pessegueiro submetidos a diferentes períodos de estratificação

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