Early growth pattern in <I>Dalbergia miscolobium</i> Benth. according to water availability and soil type

Abstract

Seedling establishment in D. miscolobium Benth. starts with the begining of the rainy season; so, they can experience waler excess at least for a short period during the establishment processo. This work analyses the seedling early growth in this species in waler excess condition. The results show that the seedling survival is not affected by waler excess when cerrado soil is used, but it is strongly reduced when forest soil is used. With flooding, there is a reduction in root/top ratio, because of the drastic reduction in the root growth, more than in the t0p, specially in forest soil. In general, the dry matter accumulation was higher in forest soil compared to cerrado soil, specially in the top, probably because of the high level of nutrients in the first one. The reduced survival and the high heterogeneity of the data observed among the seedlings growing in forest soil oould be a consequence of microrganisms, prejudicial to cerrado native species, where lhe organic matter is scarce and consequentely the microrganisms.