versão impressa ISSN 0102-0536
LIMA, Narumi P.; BIASI, Luiz Antonio; ZANETTE, Flávio e NAKASHIMA, Tomoe. Nursery plants production of two "guaco" species. Hortic. Bras. [online]. 2003, vol.21, n.1, pp. 106-109. ISSN 0102-0536. http://dx.doi.org/10.1590/S0102-05362003000100022.
Technical subsidies for the commercial production scale of "guaco", were evaluated, determining the better substratum and irrigation systems for rooting cuttings of "guaco". The development of the two species (Mikania glomerata and Mikania laevigata) was observed in the field. Different substrata in the cuttings experiment were evaluted (carbonized rice husk, sand and soil), under two irrigation systems (intermittent mist or manual irrigation). The experimental design was a randomized complete block, with four replications and twenty cuttings per plot. Cuttings were 12 cm long and 0.7-10 cm in diameter, taken from the medium part of the branches. Data were obtained 60 days after the installation of the experiments. The best rooting occurred in carbonized rice husk, with 94,38% of rooting cuttings for M. laevigata and 88,12% for M. glomerata. The irrigation systems did not affect the rooting, but the greatest volume and dry matter of roots were observed with manual irrigation. In the comparison of yield between the two species, M. laevigata presented larger tolerance to frost than M. glomerata. Mean yield of M. laevigata, evaluated 17 months after planting date, resulted in 501,5 g of dry matter/plant. We concluded that the propagation through cuttings can be done with carbonized rice husk, under manual irrigation.
Palavras-chave : Mikania glomerata; Mikania laevigata; vegetative propagation; medicinal plant; substratum.