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Home Publications National Nursery Proceedings 1990 Effect of Styroblock Design and Copper Treatment on Morphology of Conifer Seedlings

Effect of Styroblock Design and Copper Treatment on Morphology of Conifer Seedlings

Abstract.--Interior Douglas-fir, lodgepole pine, and white spruce were used to determine the effects of cavity volume, styroblocks modified with vertical ventilation holes, and copper coating on seedling morphology. Decreasing cavity volume from 60 to 50 ml resulted in smaller shoots and heavier roots in Douglas-fir and spruce and could be an aid to limiting height growth. Venting did not affect morphology greatly, but modestly increased height, diameter, and total seedling weight in Douglas-fir. In pine grown in 39 ml cavities, venting was detrimental to overall balance. Copper treatment stimulated shoot growth in Douglas-fir, but had little effect on growth of pine shoots. Copper increased root fibrosity and stim- ulated growth of the mycorrhizal fungus Thelephora terrestris in pine. Judicious selection of container type can help nursery managers obtain desired morphology, minimize cull, and improve the potential for good field performance.


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Author(s): Gary A. Hunt

Publication: National Nursery Proceedings - 1990

Event: Combined Meeting of the Western Forest Nursery Associations
1990 - Roseburg, OR