Evaluation of growth and production of tropical yam (Dioscorea alata L.) using live supports of Erythrina berteroana (Urb.) and Gliricidia sepium (Jacq.) Walp.

Evaluation of growth and production of tropical yam (Dioscorea alata L.) using live supports of Erythrina berteroana (Urb.) and Gliricidia sepium (Jacq.) Walp.

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In the second year of an experiment testing different support systems, tropical yams produced the highest yields with artificial supports (stakes and wires or individual canes). Live supports of Erythrina berteroana and Gliricidia sepium generally produced lower yam yields than those obtained with no supports. The only exception was Gliricidia pruned once at yam planting, which produced yields similar to those from yams without supports. The poor performance of yams supported by E. berteroana was attributed to light competition at root filling (131 to 161 days after planting) when the yams supported by this species had the lowest leaf area index of any treatment.

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Bibliographic Details
Main Authors: 102381 Oñoro, P., 56732 Chavarría, R., 81178 Jiménez, J.M., 131136 Westley, S.B., 106621 Powell, M.H. eds., CATIE - Centro Agronómico Tropical de Investigación y Enseñanza Turrialba, Costa Rica autor/a 3977, 15141 Nitrogen Fixing Tree Association, Hawaii (EUA), International Conference Erythrina in the New and Old Worlds Turrialba (Costa Rica) 19-23 Oct 1992
Format: biblioteca
Published: Hawaii (EUA) 1993
Subjects:DIOSCOREA ALATA, ERYTHRINA BERTEROANA, GLIRICIDIA SEPIUM, SOPORTES VIVOS, CRECIMIENTO, RENDIMIENTO,
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Summary:In the second year of an experiment testing different support systems, tropical yams produced the highest yields with artificial supports (stakes and wires or individual canes). Live supports of Erythrina berteroana and Gliricidia sepium generally produced lower yam yields than those obtained with no supports. The only exception was Gliricidia pruned once at yam planting, which produced yields similar to those from yams without supports. The poor performance of yams supported by E. berteroana was attributed to light competition at root filling (131 to 161 days after planting) when the yams supported by this species had the lowest leaf area index of any treatment.

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