PIMENTEL, J. V. F.; http://lattes.cnpq.br/2810513855063432; PIMENTEL, João Vianey Fernandes.
Résumé:
The cumaru, is a native plant of the brazilian semiarid, with multiples uses: produces an
excellent wood, has an active principle used on the food industries, perfumes and drugs
and it is also forage and a melifera plant. Due to its importance, research is needed to
evaluate its performance as an integrant of the agroforest systems on the ecological region
Caatinga, a potential sustained system. It is necessary to know the response of the cumaru
to water, fertilization and to the nature of soil surface, insumes originated and cycled on
the proper agrosystem, its performance in the agroforest system and even the possibility of
cultivation directly on seed beds. To accomplish this, three experiments were conducted.
The first one with seedlings on a greenhouse as affected by the irrigation, organic
fertilization (manure) and mulching. The second one to study the performance of cumaru
seedlings on a agroforeet system, for different organic matter levels and mulching and the
third one to study the effect of irrigation and plant spacement on plants cultivated on seed
beds. On the first experiment it was observed a benefical effect of the manure application
to the soil on soil quality, water consumption and evapotranspiration with a negative effect
on the leave number and tubercular diameter. The increase of the irrigation water
decreased the soil water Electrical Conductivity and increased the diameter of the
tuberculo and the evapotranspiration. On the second experiment, the cumaru integrating an
agroforest system showed to be economically viable, well adapted to low organic matter
content of the soil and indifferent to the nature of soil surface (mulching). On the third it
was observed that water influenced only the leaves number and the plant spacement only
the total and root fresh phytomass. Considering the absence of a method to determine de
foliar area of the Amburana cearensis, it was developed a model based on the length and
wideness of the plant.
