This study aimed to appreciate the evolution of economic efficiency in tomatoes production in greenhouses within a private firm situated next to the capital. The firm owns 4 ha greenhouses and the weight of tomatoes crop in the cultivated area is just 38.75 %. In fact, during the last three years, the tomatoes cultivated surface has been diminished in favour of flowers production which, like tomatoes production is an important income source for any producer. The reduction of the tomatoes cultivated area was compensated by the increase of intensification grade using new high performance hybrids and modern technologies. Thus, the scientific production management has been looking for maintaining the total production at the same level from a year to another by an increased average tomatoes yield by 53.33 % . The continuous increase of farm input price has doubled the cost per surface unit and increased the cost per tomatoes kilogram by 33 %. The increase of tomatoes demand and of market price by 31 % have had a positive influence on the farm incomes which has doubled during the last three years. In the year 2000, the company has obtained USD 41,818 income/ha of which subtracting the related production cost we can easily get USD 4,815 profit/ha. The average profit rate recorded by the firm is 13 % in the period 2000-2002, when the study was made. As a conclusion, tomatoes production in greenhouses is a good deal. To keep a high economic efficiency, under the diminishing of the cultivated area, the producers have to increase average tomatoes production by using high performance technology based on high economic value hybrids.
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