Interference of Grasses on the Growth of Eucalyptus Clones

Fernanda Pereira, Pedro Alves and José Martins

Journal of Agricultural Science, 2013, vol. 5, issue 11, 173

Abstract: This experiment aimed to study the interference of Urochloa decumbens, Brachiaria plantaginea, Brachiaria ruziziensis and Panicum maximum (100 plants m-2 density), on the initial growth of clones of eucalyptus (Eucalyptus urograndis) clones 1, 2, 3, 4 and 5. Each pot had one plant of eucalyptus and five weed plants. The experimental design was completely randomized with four replications, constituting a 5x5 factorial design. The height and the diameter of eucalyptus plants were evaluated at 0, 15, 28, 41 and 50 days after weeds transplanting (DAT). At 50 DAT was measured the foliar area of eucalyptus plants, as well as the dry mass of eucalyptus plants (leaves and stem) and the dry mass of weeds. The five clones suffered negative interference during the coexistence with weeds. The clones showed different behaviors through the interaction with weeds. For the more susceptible characteristics to interference – leaves and stem dry mass – eucalyptus clones 3, 4 and 5 were more sensitive to the presence of weeds.

Date: 2013
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