PROPAGATION OF BIRD CHERRY BY SOFTWOOD CUTTINGS WITH DIFFERENT ROOTING STIMULATORS

Abstract

Results of investigations into rooting of bird cherry and its interspecific hybrid soft wood cuttings using different rooting stimulators, and farming methods in some previous years are discussed. The investigation was conducted at the Food Plants Introduction Laboratory of the Central Siberian Botanical Garden, Siberian Branch of the Russian Academy of Sciences, Novosibirsk. The comparative activity of stimulators as well as their optimum concentrations and farming methods are shown. Humic acids were found to be best as to convenience and efficiency of using. It has been established that bird cherry and its hybrids with common chokecherry in the first generation are usually rooted well in good time both with stimulators and without them. In the second generation, we can see large variation among hybrids in rooting ability of softwood cuttings. Stimulators had the best effect on a degree of root system growth in cuttings, and they to a lesser extent influenced the percent of cuttings rooted. Some samples of bird cherry had sprigs of 20-25 cm in length but the hybrids never had such gains. After seedlings are set in the nursery from greenhouse, they reach standard characteristics to be planted in the garden during one or two seasons. The effect of the new preparation NABIKAT on rooting of softwood cuttings of the three bird cherry samples of different origins was studied in 2013. This preparation was found to be effective when wetting cuttings and applying it into substratum. The best results were shown after applying the preparation in 10 g/m2 concentration into substratum, when the number of roots of the second and subsequent orders increased. When we used the preparation a month after good time, we had no effect.