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Management Of The Binugas Yam (Dioscorea Alata) In Puerto Rico

Author

Listed:
  • Irizarry, H.
  • Rivera, E.

Abstract

The Bigunas yam has an extraordinary yielding potential. However, it often produces large-sized and off-shaped tubers which make the product unattractive and difficult to market. Two experiments were conducted to determine the effect of cultural practices on marketable yield and uniformity in size and shape of tubers. In the first experiment ridged and flat rows with and without vine support were evaluated. All plants were spaced .30 m in rows and 1.52 m between rows. In the second experiment the following planting systems were tested : ridged and flat rows with vine support, in-row spacings of .15 and .30 m with a distance between rows of 1.52 m, and three sett sizes averaging 56,112 and 224 g each. The Binugas yam planted in flat rows with and without vine support has a yielding potential of 60,000 to 72,500 kg/ha of marketable tubers. Premium marketable yields of 45,800 kg/ha were obtained when medium size setts (112g) were planted in flat rows spaced at .30 m within the rows. Under these management conditions 85 % of the tubers were of uniform shape and desirable marketable size. L'igname Binugas a un potentiel de rendement extraordinaire. Toutefois, il produit souvent des tubercules volumineux et malformés qui rendent sa production peu attirante et difficile à commercialiser. Deux expérimentations ont été conduite pour déterminer l'effet des systèmes de plantation, de l'espacement et la densité de peuplement et de la taille du plant de semence sur la récolte commercialisable et sur l'uniformité et laforme des tubercules. Dans la première expérimentation quatre systèmes de plantation ont été évalués : des billons avec et sans tuteur et des rangs à plat avec et sans tuteur. Les plants étaient à 0,30 m sur le rang et 1,52 m entre rangs. Dans la seconde expérimentation les traitements suivants ont été essayés : rangs à plat et billons avec 0,15 et 0,30 m sur le rang et 1,52 m entre, d'où 43.170 à 21.585 pl/ha, respectivement et trois poids de semence, 56,112 et 224 g. L'igname Binugas à plat a un rendement potentiel de 60,170 sans tuteur et 72,476 t/ha avec tuteur. Des rendements de qualité commerciale supérieure de 45,800 t/ha ont été obtenus avec 112 g, à plat à 0.30 m. Dans ces conditions 85 % des tubercules sont uniformes et de la taille commerciale souhaitable.

Suggested Citation

  • Irizarry, H. & Rivera, E., 1989. "Management Of The Binugas Yam (Dioscorea Alata) In Puerto Rico," 25th Annual Meeting, July 1-6, 1989, Gosier, Guadeloupe 259907, Caribbean Food Crops Society.
  • Handle: RePEc:ags:cfcs89:259907
    DOI: 10.22004/ag.econ.259907
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