African mahoganies can be an alternative for wood production in agroforestry systems and/or mixed-species plantations. In this study, we aimed to evaluate the growth, yield and stem form of Khaya grandifoliola C. DC. and Khaya ivorensis A. Chev. established in successional agroforestry systems and in mixed plantations of both species. A randomized block experiment was set up with the following treatments: (T1) mixed plantation of African mahoganies with elimination of regenerating community by herbicide application; (T2) mixed plantation of African mahoganies with selective management of regenerating community; (T3) agroforestry system including African mahoganies with elimination of regenerating community, through mowing operations (non-selective); and (T4) agroforestry system including African mahoganies with selective management of regenerating community. The results shown a higher growth rate of both Khaya species in T1, especially in relation to T2, possibly due to the more effective herbicide control of the dominant invasive species. The structural complexity, diversity and pruning regime of the regenerating plants in the T4 treatment possibly caused positive benefits in the Khaya trees growth. It is possible that Khaya trees captured part of the fertilizer intended for the food crops, although this effect is more pronounced for K. ivorensis. The stemwood volume stocks in T1 and T4 treatments were similar for both species. The total mean annual increments of volume at 58 months were: 3.3 m³ ha⁻¹ year⁻¹, 1.3 m³ ha⁻¹ year⁻¹, 2.2 m³ ha⁻¹ year⁻¹, and 2.8 m³ ha⁻¹ year⁻¹, for the T1 to T4, respectively. K. grandifoliola had higher height and DBH growth rates than K. ivorensis. However, K. ivorensis trees produced straighter stems, with desirable use to sawmilling.

非洲桃花心木可以替代农林业系统和/或混种林中的木材。在这项研究中，我们旨在评估Khaya grandifoliola C. DC的生长，产量和茎形。和科亚象牙A.Chev。建立在连续的农林业系统和两个物种的混合人工林中。建立了以下试验的随机分组试验：（T1）非洲桃花心木的混交林，通过施用除草剂消除了再生群落；（T2）非洲桃花心木的混交林和对再生群落的选择性管理；（T3）包括非洲桃花心木在内的农林业系统，通过割草操作（非选择性）消除了再生群落；（T4）包括非洲桃花心木的农林业系统，对再生社区进行选择性管理。结果表明，两个Khaya的增长率都较高可能是由于对主要入侵物种的除草剂控制更为有效，特别是与T2有关。在T4处理中，再生植物的结构复杂性，多样性和修剪方式可能会给Khaya树的生长带来积极的好处。尽管矢车菊科的这种作用更为明显，但Khaya树有可能捕获了部分用于粮食作物的肥料。在T1和T4处理中，两种材的材材积存量相似。量在58个月总平均年递增分别为：3.3米³ 公顷^-1 年^-1，1.3米³ 公顷^-1 年^-1，2.2米³ 公顷^-1 年^-1，和2.8米³ 公顷^-1 年^-1，分别用于T1到T4。大叶锦葵（K. grandifoliola）的身高和胸径（DBH）高于象牙兰（K. ivorensis）。但是，科特迪瓦K. ivorensis树产生较直的茎，可用于锯木厂。