5/11/2023 0 Comments Norway spruce seedlings2005) and its ecological and economical importance in both natural and planted stands of Europe, it is not surprising that observations of P. Considering the sensitivity of Picea abies Karst (Norway spruce) to soil water supply ( Karlsson et al. The anticipated changes in climate, including changes in precipitation patterns in certain regions on the background of increasing temperatures and atmospheric demand for water, make it imperative to understand species responses to water stress. Water stress limits the potential range of many species by affecting plant production potential and thus establishment and competitive success. abies seedlings include a number of parallel physiological and biochemical changes in concert, enhancing the capability of plants to survive and grow during drought periods, but only to a point. These results demonstrate that the drought response of P. A significant decrease in Chl t and F v/ F m were only observed during the more advanced stages of dehydration. Decreasing values of water potential were accompanied by early changes in P N, g s and Pro. On Day 26, significant differences in ψ L were recorded among all treatments. After Day 12 of dehydration, ψ L of ss seedlings was already significantly lower than that of the two other groups. The results indicate that not all observed physiological parameters display the same degree of sensitivity to dehydration. The following physiological variables were monitored until ss seedlings began to die: leaf water potential ( ψ L), stomatal conductance ( g s), CO 2 exchange ( P N), free proline content (Pro), total chlorophyll ( a + b) concentration (Chl t) and the maximal photochemical efficiency of photosystem II ( F v/ F m). The two remaining groups were subjected to mild (ms) and severe water stress (ss), respectively. The seedlings in the control group (c) were watered to prevent any dehydration effect. This species is not originally from North America.Four-year-old seedlings of Picea abies Karst (Norway spruce) were grown in semi-controlled conditions with three watering regimes. It is highly tolerant of urban pollution and will even thrive in inner city environments. It is not particular as to soil type or pH, and is able to handle environmental salt. It does best in average to evenly moist conditions, but will not tolerate standing water. This tree should only be grown in full sunlight. ![]() It grows at a medium rate, and under ideal conditions can be expected to live for 70 years or more. It has a low canopy, and should not be planted underneath power lines. Norway Spruce will grow to be about 60 feet tall at maturity, with a spread of 25 feet. Norway Spruce is recommended for the following landscape applications ![]() It has no significant negative characteristics. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. When pruning is necessary, it is recommended to only trim back the new growth of the current season, other than to remove any dieback. This is a relatively low maintenance tree. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition. Norway Spruce is a dense evergreen tree with a strong central leader and a distinctive and refined pyramidal form. The smooth gray bark adds an interesting dimension to the landscape. The needles remain green throughout the winter. ![]() It has rich green evergreen foliage which emerges light green in spring. Norway Spruce is primarily valued in the landscape for its distinctively pyramidal habit of growth. A very popular and durable spire-shaped evergreen, excellent for articulation interesting droopy branches when mature, rich deep green needles tough and hardy, good for windbreaks, will grow quite large under the right conditions
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