Ефективність застосування комплексних добрив під час вирощування сіянців та створення лісових культур сосни звичайної у ДП «Харківська ЛНДС»

• Date: 2025
• Main Authors: Danylenko, Oleh, Yushchyk, Vita, Rumiantsev, Maksym
• Format: Article
• Language: Ukrainian
• Published: Ukrainian Research Institute of Forestry and Forest Melioration named after G. M. Vysotsky (URIFFM) 2025
• Subjects: Pinus sylvestris L.; контейнер з агроволокна; садивний матеріал; показники росту; приживлюваність
• Online Access: https://forestry-forestmelioration.org.ua/index.php/journal/article/view/448
• Journal Title: Forestry and Forest Melioration

Introduction Fertilization is an integral component of forest nursery management for producing high-quality standard seedlings for reforestation and afforestation. It significantly enhances plant growth, increases nutrient reserves and improves resistance to drought and adverse biotic and abiotic factors., However, there is currently limited information on the effectiveness of different fertilizer types, particularly complex fertilizers, in the cultivation of Scots pine (Pinus sylvestris L.) seedlings and their subsequent use in  forest plantation establishment. The aim of the study was to evaluate the effects of various fertilizers on the biometric parameters, biomassand yield of standard container-grown Scots pine seedlings, as well as on the growth and survivability of plantations established using these seedlings in Kharkiv Forest Research Station. Materials and Methods The research was conducted in 2020. Scots pine seedlings were grown in protected ground conditions in cylindrical agrofiber containers with a volume of 700 cm3. The growing substrate was composed of a 1:1 volume ratio of well-humified dark gray medium loamy and sandy loamy soils, mixed further with peat and humus in a 3:1:0.25 ratio. During the growing season, the seedlings were fertilized twice using four types of complex fertilizers: Partner Standard, Master, Rost Kontsentrat and Help Rost, applied at rates recommended by the manufacturers. Pine seedlings grown in containers without fertilizers served as the control. The effectiveness of the tested fertilizers was evaluated based on biometric parameters and air-dry biomass of aboveground and root parts of Scots pine seedlings. Growth and survivability of one-year-old plantations established with these seedlings were also assessed. Data were analyzed using variation statistics in Microsoft Excel, with differences between the control and experimental treatments tested at the 5% significance level. Results Seedlings treated with fertilizers exhibited significantly higher biometric values compared to the control. In fertilized treatments, seedling height increased by up to 40%, root collar diameter by up to 20%, aboveground biomass by up to 27%, and root biomass by up to 59%. The highest biometric parameters and biomass were observed in seedlings treated with Partner Standard 20:20:20 and Partner Standard 35:10:10 fertilizers, while the lowest values were recorded with Master fertilizer. The proportion of standard-grade one-year-old seedlings ranged from 82% to 95% in fertilized treatments, compared to 76% in the control. Forest plantations established with fertilized container-grown seedlings showed superior growth indicators – height increased by up to 29%, height increment by up to 21%, and root collar diameter by up to 19% – as well as higher survivability (86–92%) compared to plantations established with unfertilized seedlings (84%). Conclusions. The results confirm the effectiveness of complex fertilizers such as Partner Standard, Master, Rost Kontsentrat, and Help Rost at recommended rates to enhance the growth and quality of container-grown Scots pine seedlings cultivated in protected conditions. These seedlings also demonstrate improved performance and survivability when used for reforestation and afforestation. 4 Figs., 2 Tables, 25 Refs.