Dissertation Wageningen University & Research. Women play an important role in agricultural production, especially horticulture in Senegal, by managing their own farm and by providing their labour to their husband's fields. This thesis aims to investigate the economic performance of horticultural households in Senegal, using efficiency and profitability as main indicators and adopting a gender perspective. Research questions addressed are the efficiency of the allocation of household resources over men and women, the efficiency of contracts with hired workers, either as wage labourers or as sharecroppers for household profit optimization, risk behaviour across gender, and its effects on the economic performance and the choice of labour contracts. Summary in English, French and Dutch.