Abstract
We focused on the ability of one-year-old and two-year-old plants of Paulownia Clon in vitro 112® to sprout and grow branches, and on their pruning for their best possible growth on a plantation in Střelice u Brna. Furthermore, we carried out pruning on selected parts that comprised: spring pruning; reduction in the angle between the stem axis and one new growing sprout; and year-long pruning. The sprouting capacity of Paulownia was high—up to 56% (one-year-old plants) and 50% (two-year-old plants). Branches grew on 34% of all one-year-old plants and on 57% of all two-year-old plants. The best possible spring pruning method seems to be the keeping of one stem sprout or one stump sprout for one-year-old plants and one stem sprout for two-year-old plants. The newly growing stem sprout should be formed by bandaging it to the stem, and, as a result of this, the angle between the stem and the sprout can be reduced to 20° in contrast to 50° when the sprout is not bandaged. Our results suggest that it is best to take off the lower ⅓ of the branches and leaves, which leads to faster height growth of the plant.
Highlights
Forests 2022, 13, 317 was established with ramets of Paulownia Clon in vitro 112®, which were bought from the company Oxytree Solution s.r.o., which is registered in the Czech Republic (CR) [32]
Our results show that Paulownia in the CR grows branches in one third of all oneyear-old plants
This work was aimed at influencing the growth of Paulownia Clon in vitro 112®, which was grown in the conditions of the CR, outside of its homeland
Summary
The area of origin of Paulownia spp. is China [3], Laos and Vietnam [4]. It was first used as a decorative tree in other areas such as Japan and the Korean peninsula [2]. Today, it grows on all continents, except for Antarctica. The first time that Paulownia tomentosa was planted in the region of today’s Czech Republic (CR) was in 1844 [2]
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