Application of Mg-fertilizers to prevent and to decrease Norway spruce yellowing

Yellowing of the Norway spruce is a relatively common problem in many areas of the Czech Republic. In some of them, it is also connected with forest decline; it was studied in the Šumava (Bohemian Forest) Mts. and in the western part of the Krušné hory Mts. This unfavourable phenomenon is initiated by several ecological as well as anthropic processes, one of the most important being the imbalance of forest stand nutrition. Particular reasons lead to the deficiency of nutrients, especially of magnesium. Solution of this undesirable trend is the profound ecological analysis and cause-oriented treatments. Besides lowering the air pollutant input, fertilization with deficient nutrients is a successful treatment in the forest stand management in affected areas. In the areas of interest, the application of a relatively small amount of appropriate fertilizer (SILVAMIX Mg) led to considerable improvement in the defoliation dynamics and yellowing progress since the first years after use.

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Effect of fertilisation on Norway spruce needles

Journal of Forest Science ◽

10.17221/4706-jfs ◽

2012 ◽

Vol 49 (No. 7) ◽

pp. 321-326 ◽

Cited By ~ 3

Author(s):

V. V Podrázský ◽

S. Vacek ◽

I. Ulbrichová

Keyword(s):

Norway Spruce ◽

Nutrient Deficiency ◽

Forest Stand ◽

First Year ◽

Ecological Analysis ◽

The Czech Republic ◽

Stand Management ◽

Area Of Interest ◽

Pollution Impacts ◽

Spruce Needles

Yellowing of Norway spruce is a relatively common problem in many regions of the Czech Republic. At some places, it is also connected with forest decline. This unfavourable phenomenon is initiated by several ecological as well as anthropogenic processes. One of the most important is the imbalance of forest stand nutrition. Particular reasons lead to nutrient deficiency, especially deficiency of magnesium. Solution to this undesirable trend is a profound ecological analysis and cause-oriented treatments. Besides decreasing air pollution impacts, fertilisation with deficient nutrients represents a successful treatment in the forest stand management in affected areas. In the area of interest, application of relatively small amounts of appropriate fertiliser (SILVAMIX Mg) led to considerable improvement in the defoliation dynamics and yellowing progress since the first year after application.

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Fluxes of biogenic volatile organic compounds above temperate Norway spruce forest of the Czech Republic

Agricultural and Forest Meteorology ◽

10.1016/j.agrformet.2016.10.005 ◽

2017 ◽

Vol 232 ◽

pp. 500-513 ◽

Cited By ~ 11

Author(s):

Stanislav Juráň ◽

Emanuele Pallozzi ◽

Gabriele Guidolotti ◽

Silvano Fares ◽

Ladislav Šigut ◽

...

Keyword(s):

Czech Republic ◽

Volatile Organic Compounds ◽

Norway Spruce ◽

Organic Compounds ◽

Spruce Forest ◽

Biogenic Volatile Organic Compounds ◽

The Czech Republic ◽

Volatile Organic ◽

Norway Spruce Forest

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Evaluation of the provenance plot “Hrubá Skála” (Northern Bohemia) with grand fir at the age of 36 years

Journal of Forest Science ◽

10.17221/79/2016-jfs ◽

2017 ◽

Vol 63 (No. 2) ◽

pp. 75-87 ◽

Cited By ~ 1

Author(s):

Fulín Martin ◽

Novotný Petr ◽

Podrázský Vilém ◽

Beran František ◽

Dostál Jaroslav ◽

...

Keyword(s):

Czech Republic ◽

Norway Spruce ◽

Coastal Region ◽

Tree Height ◽

Douglas Fir ◽

Stem Volume ◽

Silver Fir ◽

The Czech Republic ◽

The North ◽

Oregon Cascades

The article aims to evaluate the research provenance plot established in 1980 in locality No. 214 – Hrubá Skála (in the north of the Czech Republic), where nine provenances of grand fir (Abies grandis (Douglas ex D. Don) Lindley) provided in the framework of the International Union of Forest Research Organizations project, and one provenance of grand fir, Norway spruce, silver fir and Douglas-fir from a standard commercial source are tested. We present the results of tree height, stem DBH, stem volume production and health status after 36 years. The results correspond with similar experiments in the Czech Republic and abroad and suggest that grand fir provenances from Vancouver Island (British Columbia, Canada) and the Washington (USA) State coastal region show the best production features, while the Oregon Cascades, Idaho and Montana provenances grow more slowly. Comparison with other tree species indicates that the production of grand fir at the investigated age exceeds the production of both Norway spruce and silver fir, and equalizes or gently exceeds even Douglas-fir.

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Changes in the nutrition and health status of young Norway spruce stands in the Krkonoše Mts. in a 17-year period

Journal of Forest Science ◽

10.17221/19/2017-jfs ◽

2017 ◽

Vol 63 (No. 8) ◽

pp. 344-354

Author(s):

Novotný Radek ◽

Lomský Bohumír ◽

Šrámek Vít

Keyword(s):

Czech Republic ◽

Norway Spruce ◽

Nutrient Concentrations ◽

Height Increment ◽

Forest Stands ◽

Future Health ◽

The Czech Republic ◽

N Nutrition ◽

Spruce Stands ◽

Spruce Needles

For 17 Norway spruce stands located in the Krkonoše Mts. in the Czech Republic a long-term assessment of defoliation, height increment, foliage concentration of nutrients (N, P, Ca, K, Mg) and stress elements (S, F) was carried out. The results show a decrease of defoliation and a slight increase of height increment, which occur in accordance with the decreasing concentration of sulphur in spruce needles. However, neither sulphur concentration nor height increment trends are significant, suggesting that both the main pollution abatement and the growth resumption took place already in the 1990’s. During the late 1990’s the average spruce defoliation was greater than 35%, while since 2007 it has fluctuated between 18 and 25%, which corresponds with the figures for the forest stands located in the other regions of the Czech Republic. The evaluation of single nutrient concentrations detected occasional deficiencies of P and Mg at individual plots. The good N nutrition (> 15 mg N·g<sup>–1</sup>) in combination with a significantly decreasing trend of P, K and Ca concentrations in Norway spruce needles may potentially constitute a problem in regard to both the future health and the stability of forest stands in the studied region.

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Norway spruce in forest ecosystems of the Czech Republic in relation to different forest site conditions

Journal of Forest Science ◽

10.17221/14/2011-jfs ◽

2011 ◽

Vol 57 (No. 11) ◽

pp. 514-522 ◽

Cited By ~ 3

Author(s):

V. Mansfeld

Keyword(s):

Czech Republic ◽

Norway Spruce ◽

Forest Ecosystems ◽

Biological Diversity ◽

National Forest Inventory ◽

Management Decision ◽

Site Classification ◽

Forest Site ◽

The Czech Republic ◽

Technical Discussion

The paper analyses the representation of Norway spruce (Picea abies [L.] Karst.) (hereinafter spruce) in relation to different conditions of forest sites. The analysis is based on data from the National Forest Inventory conducted in the Czech Republic in 2001-2004 (hereinafter NFI), stratified according to units of the Forest Site Classification System (Plíva 1971, 2000). Results of the analysis provide a structured image of the current share of spruce. The formerly published information on the natural share of spruce was corroborated and the recommended share of spruce in the target species composition of the spruce management system was analyzed. The analysis documents the applicability of NFI data in the technical discussion concerning the future form of forest ecosystems in the Czech Republic. The results can be used as the groundwork for concrete forest management decision-making and will contribute to the study of the biological diversity of forest ecosystems.

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Evaluating Recent and Future Climatic Suitability for the Cultivation of Norway Spruce in the Czech Republic in Comparison with Observed Tree Cover Loss between 2001 and 2020

Forests ◽

10.3390/f12121687 ◽

2021 ◽

Vol 12 (12) ◽

pp. 1687

Author(s):

Petr Čermák ◽

Tomáš Mikita ◽

Jan Kadavý ◽

Miroslav Trnka

Keyword(s):

Czech Republic ◽

Norway Spruce ◽

Tree Cover ◽

Climatic Suitability ◽

Change Analysis ◽

The Czech Republic ◽

Salvage Logging ◽

Normal Period ◽

Bioclimatic Envelope ◽

Climatic Normal

The high portion of secondary Norway spruce in Central European forests constitutes a major problem because a significant part of these forests is moving further away from their original bioclimatic envelope. The precise evaluation and prediction of climatic suitability are needed for the implementation of forest adaptation strategies. We evaluated climatic suitability for the cultivation of Norway spruce in the Czech Republic forests, making use of the Random Forest combined learning statistical method. The evaluation presented was based on a comparison with the climatic normal period 1961–1990; change analysis was carried out for the period 1991–2014 and projected for 2021–2040 and 2041–2060. We found that suitable conditions for Norway spruce will remain only in 11.3% by area of Czech forests in the period 2041–2060 vs. 46.0% in the period 1961–1990. We also compared tree cover loss data (using Global Forest Watch) from 2001 to 2020 with statistics on salvage logging. In the period, the cover loss affected 19.5% of the area with more than 30% Norway spruce. The relationships between relative tree cover loss and the percentage of salvage logging caused by insects were conclusive and statistically significant.

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