Siberian stone pine seedlings growth with root-balled tree system on experimental substrates

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Abstract

Growth and development of annual seedlings of Siberian cedar pine (Pínus sibírica Du Tour) grown on mixtures using peat or coconut fiber with the addition of vermiculite, perlite in different proportions were analyzed. By the end of the first growing season (2021 year), the average weight of the above-ground part of seedlings averaged 1,1 ± 0,03 mg, and of roots was 0,4 ± 0,02 mg in the absolutely dry state. The influence of substrate composition on the growth of Siberian cedar pine seedlings with closed root system was established. Seedlings grown on pure peat overtook the seedlings of most of the used variants of mixtures in height. However, the plants grown on substrates where peat was the main component formed roots of significantly lower length and weight than on substrates based on coconut fiber. The sizes of annual seedlings in the variant with coconut fiber substrate mixed equally with vermiculite were characterized by significantly larger sizes of the above-ground parts by the end of the vegetation period compared to the peat mixture with the addition of agroperlite. Three-year observations (2021–2023 years) allow us to note the influence not only of the substrate composition, but also of the root ball size on the growth of Siberian pine seedlings. In the experiment with the use of 200 cm3 cups, seedlings grown on control peat substrate had the largest size in height by the end of the growing season than when using cassettes with a root ball volume of 85 cm3.

About the authors

Dar’ya A. Konovalova

Reshetnev Siberian State University of Science and Technology

Author for correspondence.
Email: konovalova_da@sibsau.ru

pg. of the Department of Breeding and Landscaping of the Institute of Forest Technologies

Russian Federation, 31, av. named after newspaper «Krasnoyarskiy rabochiy», 660037, Krasnoyarsk

Natal’ya P. Bratilova

Reshetnev Siberian State University of Science and Technology

Email: bratilovanp@sibsau.ru

Dr. Sci. (Agriculture), Professor, Head of the Department of Breeding and Landscaping at the Institute of Forest Technologies

Russian Federation, 31, av. named after newspaper «Krasnoyarskiy rabochiy», 660037, Krasnoyarsk

Alina V. Mantulina

Reshetnev Siberian State University of Science and Technology

Email: mantulina_av@sibsau.ru

pg. of the Department of Breeding and Landscaping of the Institute of Forest Technologies

Russian Federation, 31, av. named after newspaper «Krasnoyarskiy rabochiy», 660037, Krasnoyarsk

Aleksandr A. Korotkov

Reshetnev Siberian State University of Science and Technology

Email: korotkov_aa@sibsau.ru

Cand. Sci. (Agriculture), Associate Professor of the Department of Breeding and Landscaping of the Institute of Forest Technologies

Russian Federation, 31, av. named after newspaper «Krasnoyarskiy rabochiy», 660037, Krasnoyarsk

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