Irina Ivanko

6 Questions 22 Answers 0 Followers

Questions related from Irina Ivanko

Have you observed a similar disease Ulmus pumila in your cities and countries and do you have information on the pathogen?

In the city of Dnepr and Dnipropetrovsk region (Ukraine) many damaged trees Ulmus pumila are found in 2021 -2022. Other elm species are not damaged. These are mainly mature trees. Young trees are...

06 February 2023 4,249 4 View

Do you have information about the available free program for determining the area of leaves using a photo or image scanner?

It is necessary to quickly and in large repetition determine the area of the leaves of Prunus tenella in different lighting conditions.

22 June 2020 2,410 5 View

What is damaged oak self-sowing?

In natural oak forests in the floodplains of medium-sized rivers, 100% self-sown oak is damaged. Help determine the damage to self-sown oak

16 December 2018 760 7 View

Is carried out total pruning crowns of large established trees in the cities of your country?

In the city of the Dnieper (Ukraine) carry out a total pruning crowns of large established trees. This practice exists also in Russia and Belarus. The photo shows the results of radical pruning....

10 April 2018 4,203 0 View

What are the best methods for studying the spatial structure of tree and shrub thickets and the rate at which they grow

It is necessary to know the dynamics and rates of growth of Ulmus pumila thickets on abandoned agricultural lands and on urban plots after abandoned construction works. What methods to apply to...

26 June 2017 4,310 10 View

Dear colleagues What is the species of Ulmus with outgrowths on branches?

Within the city of Dnipro (steppe zone of Ukraine) the invasive species Ulmus pumila forms massive thickets in decommissioned areas. The investigated site is located on the watershed on the site...

01 January 1970 9,613 9 View