Effects of plantation density on jatropha curcas l. growth and production, on tropical ferruginous soil in Burkina Faso

Management methods in farm are an essential factor in improving Jatropha curcas development and fruit production. Reduction of cultivable land under demographic pressure, requires researching densities that allow a better expression of Jatropha curcas. It is in this context that this study was initiated. The design is a complete randomized block with 3 repetitions and 4 treatments which are following planting densities: T1 = 1 m x 1 m, T2 = 2 m x 2 m; T3 = 3m x 3m; T4 = 4 m x 4 m. The elementary plot, extends over 12m x 12m.Growth and production parameters were monitored for 52 months. From 20 to 31 months, Jatropha curcas shows strongest growth in total height and it is T2, T3 and T4 treatments which show the strongest growths. In addition, from 20 months, T2, T3 and T4 treatments show the greatest changes in diameter at base and crown surface.Treatments T2, T3 and T4 have the best yields, however, great variability between individuals and better trend for T4 (739.3 ± 465.1 kg / ha). T4 treatment could be a better option if we choose sustainability of combination system Jatropha-culture.