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：2005
卷号：16
期号：1
页码：35-40
出版社：John Libbey Eurotext
摘要：Figures See all figures Authors Mbaye Diop , François-Noël Reyniers , Benoît Sarr Institut sénégalais de recherches agricoles (Isra), Laboratoire d’enseignement et de recherche en géomatique (Lerg), Campus universitaire de l’École supérieure Polytechnique, BP 25275, Dakar-Fann, Sénégal, Centre d’étude régionale pour l’amélioration et l’adaptation à la sécheresse (Ceraas)-Institut sénégalais de recherches agricoles (Isra), BP 3320 Thiès Escale Thiès Sénégal Key words: Rainfall, Agriculture, Photoperiodism, Millet, Senegal Page(s) : 35-40 Published in: 2005 Since the beginning of the 1970s, based on rain-fed crops, Senegalese agriculture has been subjected to the constraints of a declining rainfall due to the variability of rain onset dates and to the reduction of the rain season. Many efforts have been made to find millet varieties with short cycle length, better adapted to the new climatic context. As a result, most of the traditional varieties have been abandoned to be replaced by new improved varieties. The comparison with the situation in Mali shows a different strategy, because there, farmers continue to seed photoperiodical millets which allow quantities superior to the needs of the populations to be produced, contrary to hat is happening in Senegal. In this article, water indicators of the potential yields of photoperiodical millet are compared with those of non photoperiodical millet for the period 1950-2001, in 5 stations dispatched along a North-South gradient. The results show that, for an equivalent cycle length average, photoperiodical millet varieties have better water indicators in a South half of Senegal, and more particularly South of Nioro.
