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Growth of seedlings of guava 'paluma' in different substrates and fertilized with phosphorus

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Author(s): José Soares de Lacerda | Walter Esfrain Pereira | José Felix Brito Neto | Thiago Jardelino Dias | Diógenes de Souza Costa | Petrônio Donato dos Santos | José Lucínio de Oliveira Freire

Journal: Engenharia Ambiental : Pesquisa e Tecnologia
ISSN 1678-2178

Volume: 5;
Issue: 3;
Start page: 102;
Date: 2008;
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Keywords: Psidium guajava | Mixtures | Manure bovine | Phosphorus

ABSTRACT
The guava originates in the tropical region of the Americas and despite being a plant rustic is demanding in nutrients. There are several materials, which may be used for the composition of substrate. Organic fertilizers are the most common sources of macro and micronutrients. The objective of this research was to evaluate the influence of different substrates in the vegetative growth of seedlings of guava 'Paluma". Were evaluated 21 substrata composed by concentrations of soil from 10% to 60%, said form 10% to 60%, manure bovine 0% to 40%, and simple superphosphate between (0, 7, 14 g dm-3). The treatments were distributed in randomized blocks, with three replicates and each plot consisted of two bags containing two seedlings. After 168 days was quantified the mass of the dry matter of air part and root. The substrata constituted by 10% of soil, 60% of sand and 30% of manure bovine, fertilized with 7 g dm-3 simple superphosphate, showed as was the best alternative for the training of seedlings of guava 'Paluma', because provided the greatest growth of air and root.
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