%0 Journal Article %T An¨¢lise econ£¿mica dos sistemas de cultivo com Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby (Paric¨¢) E Ananas comosus var. erectifolius (L. B. Smith) Coppus & Leal (Curau¨¢) no munic¨ªpio de Aurora do Par¨¢ (pa), Brasil %A Castro Coimbra Cordeiro %A Cordeiro de Santana %A A %A Lameira %A O.A %A Matos Silva %A I %J Revista de la Facultad de Agronom¨ªa %D 2009 %I Universidad del Zulia %X the main purpose of this work was to analyze the economic viability of crop systems with schizolobium parahyba var. amazonicum (huber ex ducke) barneby and ananas comosus var. erectifolius (l. b. smith) coppus & leal, considering three distinct systems: i) parica monoculture; ii) curau¨¢ monoculture; and iii) paric¨¢ + curau¨¢ system. the experiment was carried out in the tramontina's bel¨¦m experimental field in aurora do par¨¢, pa. from the registers of the accounts of expenditure and prescription of the unitary budget, elaborated for system each, a box flow was elaborated. the economic viability was determined through calculations of: net present value (npv), benefit/cost ratio (b/c.r), break-even point (bep) and internal rate of return (irr) in three distinct activities. for tax calculations of a 12% of discounting was chosen. the costs and the prescriptions had been esteem in r$/ha. results showed that curau¨¢ monoculture had a greater vpl (r$ 19,853.44), followed by the plantation of parica and curaua (r$ 9,507.795). the paric¨¢ and curau¨¢ system showed a high benefit/cost relation (1.29), while parica monoculture the b/c.r was less than 1. among the analyzed activities, the curau¨¢ monoculture showed a greater tir (44%) followed by the paric¨¢ and curau¨¢ system (33%). the association between paric¨¢ and curau¨¢ showed to be economically recommendable, as for agriculturists, whom they desire to implant a forest stand, as for companies interested in the reduction of the forest costs. %K economic indexes %K agro-forestry system %K reforestation %K curaua %K parica. %U http://www.scielo.org.ve/scielo.php?script=sci_abstract&pid=S0378-78182009000200007&lng=en&nrm=iso&tlng=en