Publication Date

1993

Location

New Zealand

Description

An alley-cropping experiment was carried out for 3 years in a dry land farming area in Bali to study the effect of Gliricidia sepium (gliricidia) on soybean and cassava yields. Sixteen provenances of gliricidia were compared, in a completely randomised block design with 6 blocks and 12 plants/provenance. Six of the provenances originated from Mexico (M), 4 from Guatemala (G), I each from Costa Rica (R), Nicaragua (N), Panama (P), Colombia (C), Venezuela (V) and Indonesia (I). Plant spacings were 0.5 m within the alley, with 4 m between alleys. Soybean seeds and cassava sticks were planted between the alley at 1.6 and 1.0 plants/m2 in November in each year of the experiment. Soybean was harvested in March and cassava in July. All gliricidia were lopped periodically and the leaves were spread for green manure. The highest biomass yield of the cassava was when alley cropped with gliricidia provenance M33; the highest biomass yield of the soybean was when alley cropped with C24.

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Effect of Gliricidia Provenances on the Yield of Soybean and Cassava in an Alley-Cropping System

New Zealand

An alley-cropping experiment was carried out for 3 years in a dry land farming area in Bali to study the effect of Gliricidia sepium (gliricidia) on soybean and cassava yields. Sixteen provenances of gliricidia were compared, in a completely randomised block design with 6 blocks and 12 plants/provenance. Six of the provenances originated from Mexico (M), 4 from Guatemala (G), I each from Costa Rica (R), Nicaragua (N), Panama (P), Colombia (C), Venezuela (V) and Indonesia (I). Plant spacings were 0.5 m within the alley, with 4 m between alleys. Soybean seeds and cassava sticks were planted between the alley at 1.6 and 1.0 plants/m2 in November in each year of the experiment. Soybean was harvested in March and cassava in July. All gliricidia were lopped periodically and the leaves were spread for green manure. The highest biomass yield of the cassava was when alley cropped with gliricidia provenance M33; the highest biomass yield of the soybean was when alley cropped with C24.