produtividade da couve-flor em função da idade de transplantio das mudas e tamanhos de células na bandeja cauliflower production depending on age of seedling and cell size of the trays

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ID: 246452
2005
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Abstract
O experimento foi realizado de novembro de 2000 a abril de 2001, na UNESP em São Manuel (SP). Estudou-se o efeito do tamanho da célula da bandeja de poliestireno expandido e a idade de transplantio das mudas sobre a produção de couve-flor, híbrido Shiromaru II. Usaram-se bandejas com 128 e 288 células, correspondentes a 34,6 e 9,7 cm³/célula, respectivamente, e mudas transplantadas aos 27, 34, 41 e 48 dias após a semeadura. Os tratamentos foram arranjados como fatorial 2 x 4, dispostos no delineamento de blocos casualizados, com cinco repetições. Foram avaliados, por ocasião do transplantio, o número de folhas, peso fresco, peso seco e área foliar das mudas. A parcela experimental no campo foi constituída por dez plantas. Nas colheitas, avaliaram-se a porcentagem de plantas com cabeça comercial e nestas, o número de folhas, peso fresco e diâmetro da cabeça. A produção total por parcela foi obtida com a soma do peso fresco de todas as cabeças consideradas comerciais. A produção de mudas em bandejas com 128 células proporcionou maior porcentagem de plantas comerciais (64%) relativamente às bandejas com 288 células (45%), maior peso médio de cabeça (337 g na bandeja com 128 e 247 g na bandeja com 288 células) e maior produção de plantas comerciais (36,9 t/ha em bandeja de 128 células e 19,9 t/ha em bandeja de 288 células). As mudas transplantadas com 32 dias apresentaram maior peso médio de cabeça (319 g). Concluiu-se ser recomendável produzir mudas de couve-flor em bandejas com 128 células.
The experiment was carried out from November/2000 to April/2001, in São Manuel, São Paulo State, Brazil. The effect of cell size of two polyestyrene trays and age of seedling at transplanting date was observed, on the production of cauliflower, hybrid Shiromaru II. Trays with 128 and 288 cells, corresponding to 34.6 and 9.7 cm³/cell, respectively, were used with seedlings transplanted at 27; 34; 41 and 48 days after sowing date. The treatments were arranged in a factorial 2 x 4, in a randomized block design, with five replication. Leaf number and area, fresh and dry weight of the seedlings at transplanting date was evaluated. The experimental plot was represented by ten plants. The commercial curd production (%), leaf number, curd weight and diameter were evaluated after harvest. Total yield represents the sum of the fresh weight of all commercial curds. Seedlings produced in 128 cells tray resulted in greater commercial curd percentage (64%) when compared to trays with 288 cells (45%), greater curd weight (337 g and 247 g when produced in trays with 128 or 288 cells, respectively) and greater total commercial curds (36.9 t/ha and 19.9 t/ha when produced in 128 or 288 cells trays). Seedlings transplanted 32 days after planting date resulted in plants with the greatest curd weight (319 g). Based on the obtained results, it is recommended to produce cauliflower seedlings in trays with 128 cells.
Reference Key
godoy2005horticulturaprodutividade Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Maria Carolina Godoy, Antonio Ismael Inácio Cardoso
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Journal research on biomedical engineering
Year 2005
DOI
10.1590/S0102-05362005000300029
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362005000300029
Keywords
cell sizeplant culture

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