INFLUENCE OF BIOPREPARATION VERVA AND VERVA-SPRUCE ON THE SCOTS PINE SEEDLINGS GROWTH
Abstract
The results of studying the influence of natural plant growth regulators Verva and Verva-spruce from coniferous wood greenery on the growth and development of Pinus sylvestris L. pine seedlings under the conditions of a forest nursery are presented. A comparative analysis of morphometric indices and accumulation of phytomass in the first two years of growth of pine seedlings grown from seeds treated with coniferous biopreparations of various concentration (experience) and without processing (control) is lead.
Presowing treatment of seeds with Verva and Verva-spruce preparations at concentrations of 0.1 and 0.25 mL/kg by soaking within 6 hours has led to prolonged effect on growth rates of pine seedlings. Experimental seedlings had higher increments of the aerial part compared to the control: the height of the seedling tree of the first year was 40–84% higher, the second year – 29–47%; the diameter increased by 40–43% in one-year seedlings, and by 2–40% in biennial ones. High values of biometric parameters in two-year seedlings in the experimental versions correspond to the requirements for planting material of coniferous plants. The use of preparations Verva and Verva-spruce for seed presowing treatment will shorten the period of seedling cultivation and the cost of planting material.
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