Importance of catalpa groups in cultural city greening in the case of Uzbekistan

B Kurbaniyazov,Sh Kholova,A Safarov,G Berdimuratov,K Safarov,V Kankhva

doi:10.1051/e3sconf/202125803026

Abstract

The catalpa tree is a member of the family Bignoniaceae, a species of catalpa. Representatives of this family consist of trees, shrubs, lianas and grasses, and are distinguished from other members of the family by their ornamental flowers and unusual leaves. There are regions with different climatic conditions, and in the soil and climatic conditions of the experimental cities of Tashkent and Nukus in Uzbekistan, it is important to select the composition of tree species resistant to various environmental factors. In the soil and climatic conditions of different regions of Uzbekistan, along with ornamental native plants, the widespread use of tree species introduced to our country will certainly bear fruit. The results of the study show that the use of Catalpa species in landscaping should take into account their bioecological properties. In Tashkent, the Catalpa speciosa Walder ex Engelm can be widely recommended for semi-shaded areas and in the soil-climatic conditions of Nukus for seedling breeding of Catalpa bignonioides Walt.

Highlights

The catalpa tree is a member of the family Bignoniaceae, a species of catalpa
It is known that in our country there are regions with different climatic conditions, and in the soil and climatic conditions of the experimental cities of Tashkent and Nukus, it is important to select the composition of tree species resistant to various environmental factors
According to biometric measurements conducted in Tashkent, the Catalpa speciosa Walder ex Engelm tree grows up to 20 meters in height, 0.4 meters in diameter. and the trees were found to be large trees up to 8 m in height and 0.25 m in diameter

Summary

Introduction

The catalpa tree is a member of the family Bignoniaceae, a species of catalpa. Representatives of this family consist of trees, shrubs, lianas and grasses, and are distinguished from other members of the family by their ornamental flowers and unusual leaves [1, 2]. The family consists of 100 genera and about 500 species and grows in tropical and subtropical climates. The tree is common in the U.S state and southeast. They have very large massifs in the Ohio River Valley, the mountainous regions of North Carolina, Tennessee, Kentukki, and West Virginia. Catalpa tree has a wide geographical area and can grow to withstand different climatic conditions. The average summer temperature of the regions where the natural area of the catalpa tree is distributed is 210C in the north, 270C in the south, and the amount of precipitation is 760-1,300 mm [6]

Methods

Results

Conclusion