composição de substratos e tamanho de recipientes na produção e qualidade das mudas de maracujazeiro 'amarelo' composition of substrates and volume of recipients in the production and quality of yellow passion fruit seedlings

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ID: 144819
2010
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Abstract
A produção de mudas de maracujazeiro 'amarelo' (Passiflora edulis Sims. f. flavicarpa Degener) de boa qualidade genética, fitossanitária e bem nutridas é de suma importância. A multiplicação rápida depende de alguns fatores preponderantes, relacionados com a produção de mudas, ligados especificamente aos substratos e recipientes. Este experimento foi realizado visando à avaliação da produção de mudas em diferentes substratos e dois tamanhos de recipientes, em viveiro de produção de mudas da Universidade Estadual de Mato Grosso do Sul (UEMS), Cassilândia/MS. Foram testados quatro substratos: solo puro, solo + esterco (2:1 v:v), Plantmaxâ e solo + 150 mg.dm-3 de superfosfato simples e dois tamanhos de recipientes de polietileno preto: 14x20 cm (1000 mL) e 10x20 cm (700 mL). Utilizou-se o delineamento experimental em blocos casualizados, em esquema fatorial 4 (substratos) x 2 (tamanhos de recipientes), com 4 repetições e dez plantas por parcela. Avaliaram-se as características: índice de velocidade de emergência (IVE), altura da muda (cm), comprimento de raiz (cm), diâmetro do colo (mm), número de folhas/planta, índice de clorofila foliar (ICC), massa seca da parte aérea, massa seca da raiz e massa seca total. Os resultados para as variáveis analisadas indicaram que apenas para o número de folhas/planta houve diferença significativa para o tamanho de recipiente utilizado. O solo + esterco e o Plantmax® favoreceram todos os parâmetros de crescimento nos recipientes de 700 mL. O solo puro não é recomendado para a produção de mudas de maracujazeiro 'amarelo' em ambos recipientes; pois favoreceu apenas o comprimento de raiz e massa seca da parte aérea.
The production of yellow passion fruit seedlings (Passiflora edulis Sims. f. flavicarpa Degener) with genetic and phytosanitary quality, well-nourished and precocious, is of great importance. Fast multiplication depends on some preponderant factors related to seedling production, substrate and recipient. The experiment was realized to evaluate the production of seedlings in different substrates and two bulks recipients, in a seedling nursery at the Universidade Estadual do Mato Grosso do Sul, city of Cassilândia. Four substrates were evaluated: pure soil, soil + manure (2:1), Plantmax® and soil + 150 mg.dm-3 of simple super phosphate and two recipient sizes made of black polystyrene: 14 x 20 cm (1000 mL) and 10 x 20 cm (700 mL). We used a completely randomized experimental design in a 4 (substrates) x 2 (recipients volume) factorial outline, with four replications and ten seeds per plot. The characteristics evaluated were: index of emergency speed (IVE), seedlings height (cm), root length (cm), lap diameter (mm), number of leaves/plant, chlorophyll index (ICC), shoot and root dry mass and total dry mass. The results for the analyzed variables indicated that only for the number of leaves/plant there was a significant difference depending on the size of the recipient. The soil + manure and Plantmaxâ improved all growth parameters in the recipients of 700 mL. Pure soil is not recommended for yellow passion fruit seedlings in both recipients, because they improved only root length and shoot dry mass.
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Authors ;Elisângela Aparecida da Silva;Wilson Itamar Maruyama;Vander Mendonça;Maria Gabriela Spindola Francisco;Diógenes Martins Bardiviesso;Mauro da Silva Tosta
Journal information and software technology
Year 2010
DOI
10.1590/S1413-70542010000300009
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000300009
Keywords
propagation

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