ВПЛИВ МІКРОДОБРИВА ФУЛЬВОГУМІН НА УКОРІНЕННЯ ТРОЯНДСОРТУ MILDRED SCHEELЧАЙНО-ГІБРИДНОЇ ГРУПИ

Abstract

When growing planting material, it is advisable to use fertilizers of natural origin separately or in combination with classical growth stimulants. The aim of this work was to improve the technology of propagation of semi-woody cuttings of tea-hybrid roses (on the example of the variety Mildred scheel) by studying the features of the microfertilizer Fulvogumin in different concentrations and in combination with other types of rooting stimulants. Cuttings were taken from shoots of the current year with a diameter of 5-6 mm, which finish or have finished their growth and did not have time to woody when the parent bushes completely formed buds. They were harvested from 2-3 year-old young plants.Prepared cuttings were planted in the greenhouse of the training, research and production department of Uman National University of Horticulture equipped with mist irrigation system. The results of the research showed that variant 3 appeared to be the most optimal as the percentage of rooting was 90 % and the integrated rooting rate was 69.0 %. If we analyze only the percentage of rooted cuttings, it was the highest in variant 7 (100 %), while the integrated rooting rate was 61.6 % and it was not the highest among the studiedvariants. For comparison, Control (variant 8) was 60.0 % of rooted cuttings and 22.0 % of the integrated rooting rate. A high percentage of rooted cuttings was also shown by variant 2-70.0 %, respectively, while the integrated rooting rate was 39.6 %. We should also note that we obtained 40 % of rooted cuttings with an integrated rooting rate of 12.0 % when using Fulvogumin at a concentration of 100 ml/l. This can be explained by the activation of too rapid energy exchange within the cell and between different cells. As a result, cell resources burn out quickly. However, when using this concentration of Fulvogumin in combination with succinic acid (variant 5), the percentage of rooting is 85.0 % with an integrated rooting rate of 53.8 %. And the combination of Fulvogumin 100 ml/l with Naphthylacetic acid gave significantly worse results compared to the control – 40.9 % and 10.6 %, respectively.