标题：Gestion de l’irrigation à la parcelle en culture de canne à sucre ( Saccharum officinarum L.) sous climat tropical humide, à travers le cas des régions Nord et Centre de la Côte d’Ivoire
期刊名称：Science et changements planétaires / Sécheresse
印刷版ISSN：1147-7806
电子版ISSN：1777-5922
出版年度：1997
卷号：8
期号：2
页码：87-98
出版社：John Libbey Eurotext
摘要：Authors Crepin Bi Péné , Jean-Louis Chopart , Ayémou Assa Opération hydraulique agricole, IDESSA-DCI/Filière canne à sucre, 01 BP 633 Bouaké, Côte d’Ivoire, Physique du sol et techniques culturales CIRAD-IDESSA/Filière système, 01 BP 633 Bouaké, Côte d’Ivoire, Département sciences de la terre/FAST Université d’Abidjan-Cocody, 22 BP 582 Abidjan, Côte d’Ivoire Page(s) : 87-98 Published in: 1997 Four different field trials on deficit irrigation practices were carried out at the IDESSA experimental station of Ferkessédougou and at the Sodesucre sugar complex of Zuenoula. Both sites are located respectively in northern and central western Cote d’Ivoire. This study was aimed at improving irrigation water use efficiency in sugarcane ( Saccharum officinarum L). The results show that: (1) deficit irrigation practices at the tillering stage of early-season cane lead to non-significant yield depletion. Water savings achieved at this growth stage likely increase irrigation efficiency; (2) yield depletion due to deficit irrigation at the stem elongation stage with the above crop is significantly high. Sugarcane is therefore highly sensitive to water stress at this growth stage, when deficit irrigation practices, are not recommended; (3) in general, careful irrigation management relative to rainfall patterns is important during the boom stage for early-season canes to enhance the cost-effectiveness of watering; (4) moderate deficit irrigation practices (25% of a full irrigation regime) at the yield formation stage of such late-season cane with relatively high flowering rate, provide the best irrigation water use; (5) yield depletion as a result of deficit irrigation practices at the yield formation stage of such late-season cane with a very low flowering rate, is significantly high. Crops are very sensitive to water deficit at this growth stage when a full watering regime is cost-effective. Some key recommendations were made for better field irrigation management practices so that crop water requirements can be met. They are closely dependent on management of yearly crop yield fluctuations.
