efeito de substratos na formação de porta-enxertos de psidium guajava l. cv. ogawa em tubetes effect of substrates in the formation of psidium guajava l. cv. ogawa rootstocks in root plugs

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ID: 159352
2005
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Abstract
Avaliou-se a formação de porta-enxertos de goiabeira em tubetes e em diferentes substratos: vermiculita + vermicomposto, casca de arroz carbonizada + vermicomposto, vermicomposto + tegumento de amêndoa de caju decomposto, casca de arroz carbonizada + esterco bovino curtido, casca de arroz carbonizada + vermiculita e pó da casca de coco maduro + folha de carnaubeira triturada e decomposta. Utilizou-se o delineamento experimental inteiramente casualizado, com 6 tratamentos, 4 repetições e 14 plantas por parcela. Foram avaliados a altura da parte aérea, o diâmetro do caule e o número de folhas aos 60; 90 e 120 dias após a semeadura. Avaliaram-se a massa da matéria seca da parte aérea e das raízes, a facilidade de retirada da muda do tubete e a agregação do substrato às raízes, aos 120 dias. Porta-enxertos produzidos aos 120 dias propiciaram os maiores valores de altura da parte aérea (30,2 cm), diâmetro do caule (5,3 mm), massa da matéria seca da parte aérea (5,7 g) e das raízes (3,0 g), e número de folhas (14,5) quando foi usado o substrato vermiculita + vermicomposto. Maior facilidade de retirada da muda do tubete foi encontrada nos substratos vermiculita + vermicomposto, vermicomposto + tegumento de amêndoa de caju decomposto, casca de arroz carbonizada + vermiculita e casca de arroz carbonizada + esterco bovino curtido. Todos os substratos apresentaram ótima agregação do substrato às raízes.
The formation of guava rootstocks in root plugs was evaluated in differents substrates: vermiculite + vermicompost, carbonized rice hulls + vermicompost, vermicompost + decompose cashewnut tegument, carbonized rice hulls + cattle manure, carbonized rice hulls + vermiculite and dust peel of ripened coconut fruit + decompose leave dust from carnauba palm tree. The experimental design was completely randomized with 6 treatments, 4 replicates and 14 plants per plot. The plant height, stem diameter and number of leaves were measured in three different periods at 60, 90 and 120 days after sowing. Shoot dry matter and root dry matter mass, the facility to remove the seedling from the root plug and substrates aggregation to root were evaluated at 120 days after sowing. The results showed that guava rootstocks with 120 days provided the taller plant height (30.2 cm), stem diameter (5.3 mm), dry matter mass (5.7g), root dry matter mass (3.0 g) and number of leaves (14.5) in the vermiculite + vermicompost substrate. The easiest substrate to take out the rootstocks from the root plug were achieved using vermiculite + vermicompost, vermicompost + decompose cashwewnut tegument, carbonized rice hulls + vermiculite and carbonized rice hulls + cattle manure. It was observed that all the substrates showed excellent results in substrate aggregation.
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Authors Diva Correia, Esaú Matos Ribeiro, Leonardo Salviano Lopes, Adroaldo Guimarães Rossetti, Cláudia Araújo Marco
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Journal technocom
Year 2005
DOI
10.1590/S0100-29452005000100024
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452005000100024
Keywords
inorganic and organic componentsplant culture

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