The objective of this study was to compare growth, coppicing, and biomass production of 17 accessions of Leucaena leucocephala widely distributed for planting in East and Southern Africa by National Tree Seed Centres in Malawi, Tanzania, Zambia and Kenya. A widely used accession in alley cropping in West Africa was also included. The trial was established in 1989 on a sandy loam soil in a sub-humid unimodal rainfall area at Makoka, Malawi. Assessments were done for survival at 3 months and at 15 and 30 months after establishment for height, diameter at the root collar, number of branches and biomass production. Survival was generally good for most accessions (> 90%) with the exception of an accession from Machakos, Kenya (No. 84511) which had a survival of only 67%. Fifteen months after establishment, accessions from Yimbo (Kenya), and two K8 accessions from Kasama (Zambia) and Machakos (Kenya) achieved the best height of over 3.2 m. Poor accessions included accession No. 84511 from Machakos (Kenya), Peru (ex. Makoka, Malawi), and the West African accession from IITA (Nigeria) whose height was less than 2.5 m. At 15 months, 12 of the accessions tested showed high total biomass production (dry wt), 25 -38 t ha⁻¹. The foliage biomass (leaves, twigs and pods) yields exceeded 101 ha⁻¹ in all but one accession from Makoka, Malawi and another from Korogwe, Tanzania. After clear cutting, all the Leucaena accessions coppiced and grew exceptionally well, achieving very high biomass production in only 15 months. The highest yields were produced by accessions from Isiolo, Kenya (47.7 t ha⁻¹); Namiyanga, Malawi (42.2 t ha⁻¹); Yimbo, Kenya (36.3 t ha⁻¹) and accession Pursa from Kasama, Zambia (35.6 t ha⁻¹). Poor accessions yielded less than 201 ha⁻¹ and included local seed sources of Peru and Cunningham from Makoka, Malawi and the West African accession from UTA, Ibadan, Nigeria. Kajian ini bertujuan untuk membandingkan pertumbuhan, pengkopisan dan pengeluaran biojisim 17 aksesi Leucaena leucocephala yang diagihkan dengan meluas untuk penanaman di Timur dan Selatan Afrika oleh Pusat-pusat Biji Benih Pokok Kebangsaan di Malawi, Tanzania, Zambia dan Kenya. Satu aksesi yang digunakan dengan meluasnya di dalam penanaman di lorong-lorong di Afrika Barat juga disertakan. Percubaan ini telah ditubuhkan dalam tahun 1989 di atas tanah berpasir lorn di kawasan hujan turun unimod sublembab di Makoka, Malawi. Penilaian dijalankan untuk kemandirian selepas tiga bulan dan penilaian ketinggian, garispusat gelangan akar, bilangan dahan serta pengeluaran biojisim dijalankan pada bulan ke-15 dan ke-30. Kemandirian pada umumnya adalah baik bagi kebanyakan aksesi (>90%) kecuali satu aksesi daripada Machakos, Kenya (No. 84511) yang mempunyai kemandirian hanya 67%. Lima belas bulan selepas penubuhan, aksesi daripadaYimbo (Kenya), dan dua aksesi K8 daripada Kasama (Zambia) dan Machakos (Kenya) mencapai ketinggian terbaikiaitu melebihi 3.2 m. Aksesi yang lemah termasuklah aksesi No. 84511 daripada Machakos (Kenya); Peru (ex. Makoka, Malawi); dan aksesi Afrika Barat daripada IITA (Nigeria) yang mana ketinggiannya adalah kurang daripada 2.5 m. Pada 15 bulan, 12 daripada aksesi yang diuji menunjukkan jumlah pengeluaran biojisim yang tinggi (berat kering), 25-38 t ha⁻¹. Hasil biojisim daun (daun, ranting dan lenggai) mencapai 10 t ha⁻¹ di dalam semua aksesi tetapi satu aksesi daripada Makoka, Malawi dan yang lainnya daripada Korogure, Tanzania. Selepas penebangan bersih, semua aksesi Leucoena mengkopis dan tumbuh dengan baik, dengan mencapai pengeluaran biojisim yang sangat tinggi dalam masa hanya 15 bulan. Hasil tertinggi dikeluarkan olah aksesi-aksesi daripada Isiolo, Kenya (47.7 t ha⁻¹); Namiyanga, Malawi (42.2 t ha⁻¹); Yimbo, Kenya (36.3 t ha⁻¹); dan Pursa daripada Kasama, Zambia (35.6 t ha⁻¹). Aksesi-aksesi yang lemah menghasilkan kurang daripada 20 t ha⁻¹ dan termasuk sumber-sumber biji benih tempatan Peru dan Cunningham daripada Makoka, Malawi dan aksesi Afrika Barat daripada IITA, Ibadan, Nigeria.