Qualidade de mudas de alface formadas em bandejas de isopor com diferentes números de células

Marques, Patrícia Angélica Alves; Baldotto, Pedro Veridiano; Pacheco, Ana Cláudia; Oliveira, Leandro de

doi:10.1590/s0102-05362003000400015

Cited by 33 publications

(23 citation statements)

References 7 publications

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“…Trays of 128 cells and 200 cells are most feasible for the formation of lettuce seedlings (MARQUES et al, 2003) in the state of São Paulo, however, among nurserymen, trays of 200 and 288 cells stand out, who look for taking advantage of the spaces of the protected environment and the economy of substrates (TRANI et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Formation of beetroot seedlings in different protected environments, substrates and containers in Aquidauana region, State of Mato Grosso do Sul, Brazil

Oliveira

Costa

Cortelassi³

et al. 2012

Eng. Agríc.

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This study with beetroot seedlings, cultivar Top Tall Early Wonder, was carried out at the State University of Mato Grosso do Sul (UEMS/Aquidauana), from October to November 2008. Three environments of cultivation were used: greenhouse; nursery with monofilament screen of 50 % of shading; and nursery with aluminized thermal reflective screen of 50% of shading. In these environments, three polystyrene trays of 72, 128 and 200 cells, filled with four substrates, were tested: soil; Plantmax ® ; coconut fiber and vermiculite. There were no replication environments and then each one was considered an experiment alone. For each environment, it was adopted a completely randomized design in factorial scheme 3x4 (three trays x four substrates), with four replications, performing individual analysis of variance and joint analysis of experiments for environment comparisons. The monofilament screen is the best environment for seedlings produced in tray of 72 cells, and the greenhouse was the best environment for seedlings produced in trays of 128 cells. The best seedlings were formed in the tray of 72 cells. Vermiculite was the best substrate.

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Section: Introductionmentioning

confidence: 99%

Formation of beetroot seedlings in different protected environments, substrates and containers in Aquidauana region, State of Mato Grosso do Sul, Brazil

Oliveira

Costa

Cortelassi³

et al. 2012

Eng. Agríc.

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“…The stem diameter, the aerial dry phytomass and total phytomass, in the 200 cells tray, did not differ from the seedlings cultivated in Plantmax ® (Table 4). The vermiculite properties, as root system conditioner, were also showed by NEGREIROS et al (2004) andCOSTA et al (2009 b, c), because this substrate has great capacity of aeration and water retention.…”

Section: Resultsmentioning

confidence: 62%

Production of tomato seedlings using different substrates and trays in three protected environments

Costa¹,

Leal

Benett³

et al. 2012

Eng. Agríc.

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ABSTRACT:The seedlings production is an essential part for vegetables production. Thus, this study aimed to evaluate the environment, the substrates and the containers in the development of tomato seedlings, cv. Santa crus Kada Gigante, in Aquidauana -MS, Brazil region, from October to November, 2008. Polystyrene trays with 72; 128 and 200 cells, filled with four substrates (soil; Plantmax ® ; coconut fiber and vermiculite) were tested in three protected environments (greenhouse; screened with Sombrite ® and screened with Aluminet ® ). The experimental design was completely randomized, factorial scheme 3x4 (three trays x four substrates), with four replications, being analyzed individual variance analysis and joint analysis for the environments. The environment with screens (Sombrite ® and Aluminet ® ), the trays with 72 cells and the vermiculite produced better results.

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“…Por serem sementes de pequeno porte, possuem poucas reservas, exigindo condições otimizadas para a germinação a fim de assegurar a emergência e produção de mudas de alto vigor. Porém Marques et al (2003) observaram desuniformidade do estande de plantas na emergência das plântulas, provavelmente oriundas da heterogeneidade do sistema, da variabilidade das diferentes posições das mudas dentro das bandejas de poliestireno e das possíveis diferenças das plantas no estabelecimento da população.…”

Section: Introductionunclassified

Posições das mudas de alface nas bandejas de poliestireno e efeitos na normalidade e homogeneidade dos erros na produção de plantas

Zanardo¹,

Lúcio²,

Paludo³

et al. 2010

Rev. Ciênc. Agron.

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Posições das mudas de alface nas bandejas de poliestireno e efeitos na normalidade e homogeneidade dos erros na produção de plantas 1Positions of lettuce seedling on polystyrene trays and effects on normality and homogeneity of the errors in the plant production (2007) com a cultura da alface, cultivar Vera. Os tratamentos foram 12 diferentes posições das mudas na bandeja de produção. As variáveis analisadas na produção de mudas e após o transplante aos ambientes foram a fitomassa fresca e seca da parte aérea e raiz e fitomassa fresca e seca da parte aérea, respectivamente. Foram testadas as normalidade e homogeneidade dos erros sendo comparadas às médias de cada tratamento. Há atendimento da homogeneidade e normalidade dos erros para as fitomassas fresca da parte aérea e de raiz de alface nos experimentos com diferentes posições de mudas na bandeja de produção, nos diferentes ambientes e estações sazonais de cultivo. Para a fitomassa seca da parte aérea não há atendimento da homogeneidade e/ou normalidade dos erros nos experimentos no verão, com produção de mudas e de plantas na estufa plástica. Para a fitomassa seca de raiz não há atendimento da normalidade dos erros no experimento no outono-inverno com produção de mudas. Palavras-chave -Lactuca sativa. Planejamento experimental. Análise de variância. Mudas.Abstract -The quality of an experiment can be described through statistics, being the experimental error one of the parameters of the evaluation of such quality. The objective of this study was to verify the interference of different positions of lettuce seedlings on polystyrene trays on the normality and homogeneity of the errors in experiments conducted in plastic greenhouse and field. Six experiments were carried out in the Federal University of Santa Maria, being three in the summer (2006)(2007) and three in the autumn -winter (2007) with the lettuce crop, cultivar Vera. The treatments were defined by 12 different positions of the seedlings on the tray of production. The analyzed variables in the seedling production and after their transplant to the environments were the fresh and dry phytomass of leaves and roots and the fresh and dry phytomass of leaves, respectively. Presuppositions of errors normality and homogeneity were tested being compared to the averages of each treatment. The assumptions of homogeneity and normality of experimental errors were adequate for the leaves and root phytomass of lettuce in experiments with different positions in the tray seedling production, in different environments and cultivation seasons. For the dry phytomass of leaves trere was no adequacy of homogeneity and/or normality of experimental errors in the summer experiments, with seedlings and plants in plastic greenhouse. For the dry phytomass of root there was no adequacy of the assumption of normality of experimental error in the autumn-winter experiment with seedlings.

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Qualidade de mudas de alface formadas em bandejas de isopor com diferentes números de células

Cited by 33 publications

References 7 publications

Formation of beetroot seedlings in different protected environments, substrates and containers in Aquidauana region, State of Mato Grosso do Sul, Brazil

Formation of beetroot seedlings in different protected environments, substrates and containers in Aquidauana region, State of Mato Grosso do Sul, Brazil

Production of tomato seedlings using different substrates and trays in three protected environments

Posições das mudas de alface nas bandejas de poliestireno e efeitos na normalidade e homogeneidade dos erros na produção de plantas

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