This work was carried out to determine the effect of plant growth regulators on the fruiting of tomato plant, Lycopersicon esculentum cv. Miguel Pereira. In this trial Trylone (2-hidroximetil 4-chlorophenoxyaceticacid) at 10 ml/l and 20 ml/l, and Tomatotone (p-chlorophenoxyacetic acid) at 10 ml/l and 20 ml/l were sprayed during anthesis of the first two flowers of the first three clusters. It was verified that Tomatotone 10 ml/l and 20 ml/l increased the number, length and weight of tomato fruits; Tomatotone 20 ml/l induced the formation of fruits with a better classification. Tomatotone and Trylone reduced the number of aborted flowers. Trylone 20 ml/l increase the percentage of parthenocarpic fruits.