8. Influence of the pruning during the vegetation period on the biological benavior of cucumbers cultivated in unheated plastic houses. I. Vegetative and generative behavior and photosynthetic productivity of the plants

The experiments were set in unheated plastic houses during the period 2009-2010. The effect of the short and long pruning of the first-order offshoots was tested on the Bulgarian salad cultivar Gergana. It was established that the pinching of the vegetation top of the offshoots after the formation of 2-3 leaves provoked the highest day-growth of the leaf surface and the formation of the highest number of female flowers. When applying the same variant the higest rate of fruit-formation was observed.