Propagation technology of Pinus pallasiana (L.) for agroforestry in southern regions.

Analysis of studies on the direction of enrichment of dendroflora of artificial plantations showed the promising potential of Pinus pallasiana (L.) for agroforestry in the southern regions of Russia. The aim is to develop a technology for obtaining planting material with a closed root system taking into account the ecological and biological characteristics of coniferous plants. The accelerated technology of obtaining seedlings of P. pallasiana with a closed root system was developed. The location of research in closed ground conditions (greenhouse, area 252 m²) at the Nizhnevolzhskaya station on the selection of woody species -- branch of the Federal Research Center of Agroecology of the Russian Academy of Sciences (Russia, Volgograd region, Kamyshin; coordinates 50.078957, 45.370560). The research period was from December 2020 to September 2022. Substrate composition, optimal timing and frequency of plant feeding with complex fertilizers, including chlorine-free fertilizers, were recommended. Accelerated terms of cultivation and placement of pine plants for adaptation on the hardening site give a positive effect, which is associated with the economical consumption of seeds, and the safety of seedlings at all stages of cultivation. A technique is proposed that allows the root to avoid deformation, which, under conditions of soil moisture deficit, allows to increase the rooting of the plant. [ABSTRACT FROM AUTHOR]