Abstract
Abstract Introduction: Improving the quality and quantity of fruit must become a priority of modern horticulture, so that any new method that contributes to this goal is welcome. Plum, apple and walnut are three species of fruit trees, namely trees, covering a significant place in romanian horticulture. The devices A.D. are recognized through numerous experiments conducted. Aim: We choose to expirience the effect of these on three species mentioned above, comparing the amount of dry matter assimilated during a day, of each species to the other. Materials and methods: The method comprises two harvesting of biological material (leaves), one in the morning and the second in the afternoon. Harvested material is dried and weighed, for finding the values which must be compared. Results: Value analysis restored, with a less significant error, the influence of the three devices used, on dry matter accumulation and on photosynthesis process. Conclusion: Using bio-phyto-modulators improves the photosynthesis process. Choosing the optimal bio-phyto-dynamic modulators, their range and their combinations should be made only after achieving a sufficient number of experiments.
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