There has been an increasing demand for small-sized (cherry) tomatoes because they contain lycopene and other functional constituents, last for a long period of time, and are delicious to eat. However, since conventional cherry tomato cultivation methods involve guiding the vines upward and downward and other tasks that are labor-intensive, it is necessary to develop new cultivation techniques to save the energy required for cultivation management and reduce the labor required. In 2010, the authors developed a new method for open-field cherry tomato cultivation, in which the seedlings are planted more sparsely compared with conventional cultivation methods and most lateral shoots are left as they are. Although the new cultivation method, which is referred to as the sauvage method, is becoming popular across Japan, no studies have been conducted to compare the yield, quality, and growth rate of tomatoes between the sauvage and conventional cultivation methods. The present study aimed to establish the sauvage cultivation system as a new open-field cultivation method for summer-autumn-harvest cherry tomatoes. Two cherry tomato varieties with different characteristics were raised for two years using the sauvage and conventional cultivation methods, and the results were compared. The total yield and vendible crop yield per stock produced from the sauvage cultivation were larger, compared with conventional cultivation methods. In addition, the yield per area produced from the sauvage cultivation was expected to be equivalent to that from conventional cultivation methods, although the number of stocks per area was approximately one sixth. Furthermore, the sauvage cultivation method prevented the fruit from being sun-damaged. The sugar content of cherry tomatoes produced with sauvage cultivation was the same or lower, and the lycopene content was the same or higher, compared with conventional cultivation methods.
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