APPLICATION OF HUMIC PREPARATION HUMOVIT AS A ROOT GROWTH STIMULATOR WHILE BLACK CHOKEBERRY PROPAGATION (ARONIA MELANOCARPA)
The paper evaluates stimulation of black chokeberry rooting while tilling it with experimental liquid humic specimen Humovit received by means of non-waste processing of highbog peat with low decomposition. The authors show that tillage of black chokeberry softwood cuttings with Humovit (50 ml/l) during 16 hours enhanced rooting on 6 days earlier, increased planting stock in 2.4 tijmes, the height of aboveground part on 25.0%, diameter of nominal crown on 65.9 %, the number of roots in 2.1 times and their average length on 46.4% in comparison with softwood cutting tilled with water. Humovit makes the similar effect on aboveground part of planting stock as reference compounds like indole butiric acid. Humovit is considered to make greater effect on the number of main roots and their length than reference compounds. The authors say, that artificially received humic acids, which are active ingredients of Humovit are biologically active to softwood cutting of black chokeberry. The authors recommend Humovit to be applied as a stimulator of rooting while propagation of black chokeberry along with more expensive specimen indole butiric acid.