5.1 Introduction

This section contains information about the propagation, care, and management of selected indigenous trees that were identified during the formal survey as having highly valued forest tree products and potential for planting in Tanzania. (Refer to Table 5.1.) It includes, to the extent possible, information on local management and propagation techniques. This information is integrated into a species profile which also includes uses (presented in Section 5.4).

A brief summary of propagation techniques is found in Section 5.2. Since space limits the amount of information that can be included, reference texts such as those by Weber and Stoney (1986), Rocheleau, Weber, and Field-Juma (1988), or Young (1989) are recommended for detailed information on propagation and silvicultural techniques. For information on silviculture, the reader is referred to a good silvicultural textbook such as Smith (1986).

TABLE 5.1 Species Highly Valued by Local People, Having Multiple Uses and Suitable for Planting Acacia albida (F. Albida) * Acacia lahai Acacia mellifera * Acacia nilotica * Acacia polyacantha Acacia tortilis * Adansonia digitata * Afzelia quanzensis * Albizia gummifera * Albizia petersiana Albizia schimperana * Albizia versicolor * Annona senegalensis * Azanza garckeana * Balanites aegyptiaca * Berchemia discolor * Brachystegia spiciformis * Breonadia salicina * Bridelia micrantha * Burkea africana * Cassipourea malosana * Combretum adenogonium* Combretum moue * Commiphora africana * Commiphora eminii * Commiphora ugogoensis Cordia africana * Cordia sinensis * Croton macrostachyus Croton megalocarpus * Dalbergia arbutifolia Dalbergia melanoxylon * Dichrostachys cinerea * Diospyros mespiliformis * Entada abyssinica * Erythrina abyssinica * Euphorbia tirucalli * Faurea saligna Ficus sycomorus * Ficus thonningii * Flacourtia indica * Grewia bicolor * Grewia platyclada Juniperus procera * Khaya anthotheca * Lonchocarpus capassa * Markhamia obtusifolia * Markhamia zanzibarica Milicia excelsa * Ocotea usambarensis * Olea capensis * Olea europaea * Oxytenanthera abyssinica * Parinari curatellifolia * Podocarpus latifolius Pterocarpus angolensis * Rauvolfia caffra * Salvadora persica * Strophanthus eminii Strychnos cocculoides * Syzygium guineense * Tamarindus indica * Teclea nobilis * Terminalia sericea * Trema orientalis * Trichilia emetica * Uapaca kirkiana * Vangueria infausta Vangueria madagascariensis * Vitex doniana * Vitex payos Warburgia salutaris * Xeroderris stuhlmannii Ximenia americana * Ximenia caffra

* = Species profiles are presented in Section 5.4.

Silvicultural and management information about species indigenous to East Africa is sketchy and somewhat difficult to find. Little research has been done on their propagation and ecology, in contrast to many well-known exotic species. Some species that were identified by survey respondents as having valuable multiple uses such as Berchemia discolor, Breonadia spp., and Oxytenanthera abyssinica, are poorly researched or undocumented. Other species like Tamarindus indica and Acacia nilotica are well researched, and a good deal of information already exists on their propagation and management. Consequently, the species profiles presented in this section are somewhat uneven, with some species having considerable detail and others having relatively little.

In some cases considerable information exists for one species, but not for another in the same genus, for example Acacia nilotica and Acacia mellifera. Readers may wish to experiment by trying techniques described for a related species, but with the caveat that what works for one may not work for another. In these cases trial and error is the only way to determine effective techniques.