Effets de la couverture du sol avec Stylosanthes guianensis (Aublet) Swartz, de la taille et de la fumure minérale sur la production de Jatropha curcas L. dans la région de Kinshasa

摘要

In order to evaluate the performance of iJatropha curcas i/L. in poor soil conditions, a test was conducted near Kinshasa on the Batéké plateau between July 2009 and December 2012 in the sites of Mbankana and Mongata. The results show significant differences (ipi/??0.05) between the treatments applied on the vegetative growth and yield. Ground cover with iStylosanthes guianensis i/permitted to reduce significantly the rate of fruit abortion of iJatropha i/and to increase the average number of seeds per capsule. The combination of pruning, mineral fertilizers application, and iStylosanthes i/cover improved drastically the yields obtained in the 3rd year of production compared to the control with respectively 498.73?±?5.88 kg of dry seeds hasup-1sup/in Mbankana and 552.95?±?5.03 kg hasup-1sup/ in Mongata. In the control plots, yields were 167.85?±?6.57 kg hasup-1sup/ of dry seeds in Mbankana and 172.28?±?5.96 kg hasup-1sup/ of dry seeds in Mongata.