ISSN: 0041-3216

ISSN: 0041-3216 (Online), 0041-3216 (Print)
Volume 63 Number 3
Research Papers
Alley farming with Gliricidia sepium: germplasm evaluation and planting density trial
J.E. Sumberg
Two experiments related to the use of Gliricidia sepium in alley farming are reported. Evaluation of early vigour and mulch yield of a Gliricidia germplasm collection from Costa Rica indicated that the collection contains significant variation for both characteristics. Over four harvests, the four highest yielding accessions produced 37% more mulch than 'Ibadan Local'. Six planting densities were established with seedlings to determine their effects on mulch yield of Gliricidia. With more than 12 seedlings m-1, the percentage of seedlings which successfully established was reduced. Over four harvests, the greatest mulch yield was obtained with approximately 10 established trees m-1.
Keywords: Gliricidia sepium; Alley farming; Agroforestry; Tree establishment; Germplasm evaluation