THE USE OF ARBUSCULAR MYCORRHIZAL FUNGI IN CONTAINER PRODUCTION OF SELECTED ORNAMENTAL CONIFERS UNDER ORGANIC-MINERAL FERTILIZATION LEVEL

摘要

The study investigated the effects of arbuscular mycorrhizal inocula Endorize-Mix, and Endomix, and mode of organic-mineral fertilization, on mycorrhizal colonization and growth of Chamaecyparis lawsoniana 'Golden Wonder', Taxus x media and Thuja occidentalis 'Smaragd' under a nursery-container production system. The fertilizing combination consisted of compost (0, 10 and 20% v/v) and Osmocote Standard 5-6M (1.5 and 3 g dm(-3)). The frequency of mycorrhiza in the root system, and growth of plants were evaluated. The use of Endorize-Mix resulted with mycorrhiza formation in all tested plants. The use of Endorize-Mix and Endomix in the container nursery production system allowed for the possibility of achieving well mycorrhized coniferous plants cultivated in pure peat-moss substrate and fertilized at the recommended rate of Osmocote Standard 5-6M. The use of Endorize-Mix ameliorated growth of C. lawsoniana and the use of Endomix ameliorated the growth of T. media after two years of cultivation.