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YIELD OF BUFFELGRASS (Cenchrus ciliaris) CULTIVARS AT THREE CUTTING FREQUENCIES IN THE VIRGIN ISLANDS

Author

Listed:
  • Wildeus, Cyndi L.
  • Michaud, M.W.
  • Wildeus, S.

Abstract

The performance of six buffelgrass (Cenchrus ciliaris) cultivars and one buffelgrass χ birdwood grass (C. setigerus) hybrid was evaluated under Virgin Islands conditions. The accumulative dry matter yield at three cutting frequencies (4,8 and 12 weeks) was determined over 10 months. Seeds were germinated in flats and transferred to styrofoam cups until a mature root system developed. Initially plots were irrigated and hand weeded to ensure establishment. Plot harvestwas initiated 7 months aftertransplanting. Cultivars differed (P<.05) in accumulative dry matter yield, Llano being the highest yielding cultivar followed by Nueces. The buffelgrass χ birdwood hybrid was the lowest yielding cultivar regardless of cutting frequency. Cutting frequency affected (P<.01) dry matter yield, with yields increasing with longer cutting intervals. There was no cultivar χ cutting frequency interaction. Dry matter percentage was highest for harvest at the 12 weeks cutting frequency, but fluctuated with monthly rainfall patterns. ----- Le rendement de sixcultivars debuffelgrass (Cenchrus ciliaris) etd'un hybride C. ciliaris X C. setigerus ont été évalués dans les conditions des Iles vierges. Sur une période d'environ 10 mois l'accumulation de la matière sèche produite a été mesurée à trois fréquences de coupe différentes : 4,8 et 12 semaines. Les graines ont été placées dans des germinateurs et ont été transférées à postériori dans des pots plastiques jusqu'à la maturité du système racinaire. Après repiquage, les parcelles ont été irriguées et désherbées pour assurer le bon établissement des plants. Les coupes ont débuté 7 mois après le ripiquage. La production de matière sèche présente des différences entre les cultivars (P<0.05), Llano étant le plus productif suivi de Nueces. L'hybride C. ciliaris X C. setigerus a les plus faibles rendements indépendament de la fréquence de coupe. La fréquence de coupe modifie (P<0.01) la production de matière sèche laquelle augmente avec la durée de l'intervalle entre coupes. Il n'y a pas eu d'interaction entre cultivar et fréquence de coupe. La teneur en matière sèche du fourrage a été plus élevée à la fréquence de 12 semaines, mais elle varie avec la distribution mensuelle des précipitations.

Suggested Citation

  • Wildeus, Cyndi L. & Michaud, M.W. & Wildeus, S., 1989. "YIELD OF BUFFELGRASS (Cenchrus ciliaris) CULTIVARS AT THREE CUTTING FREQUENCIES IN THE VIRGIN ISLANDS," 25th Annual Meeting, July 1-6, 1989, Gosier, Guadeloupe 259911, Caribbean Food Crops Society.
    • Handle: RePEc:ags:cfcs89:259911
    DOI: 10.22004/ag.econ.259911
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