A method for the protection of spruce stands againstIps typographus by the use of barriers of pheromone traps in north-eastern Slovakia

1998 ◽  
Vol 71 (8) ◽  
pp. 152-158 ◽  
Author(s):  
R. Jakuš
Keyword(s):  
Pheromone Traps ◽  
North Eastern ◽  
Spruce Stands

scholarly journals Spruce Beetle Population Suppression in Northern Utah

2000 ◽  
Vol 15 (3) ◽  
pp. 122-128 ◽  
Author(s):  
B. J. Bentz ◽  
A. S. Munson
Keyword(s):  
Early Detection ◽  
Bark Beetle ◽  
Federal Agencies ◽  
Pheromone Traps ◽  
Field Surveys ◽  
Beetle Population ◽  
Spruce Beetle ◽  
Spruce Stands ◽  
Northern Utah ◽  
Population Suppression

Abstract The spruce beetle is a widely dispersed, native bark beetle that attacks and kills North American spruces. We describe a project that was initiated to suppress an endemic spruce beetle population in an isolated 1000 ac area of spruce in northeastern Utah. Techniques used included baited pheromone traps, selective harvesting and burning of infested trees, and trap trees. Over the 3 yr period of monitoring, the number of standing, currently infested spruce trees was reduced 91%. Field surveys and data trends, in comparison with a nearby spruce beetle population that continued to increase, indicate that the treatments played a major role in decreasing the trend of spruce beetle-infested trees during the study period. This combination of suppression techniques was successful due to the isolated nature of the spruce stands, early detection of the beetle population, accessibility of the stands, and coordinated efforts of local, state, and federal agencies. West. J. Appl. For. 15(3):122-128.

scholarly journals Effect of insecticide-treated trap logs and lure traps for Ips typographus(Coleoptera: Curculionidae) management on nontarget arthropods catching in Norway spruce stands

2014 ◽  
Vol 60 (No. 1) ◽  
pp. 6-11 ◽  
Author(s):  
J. Lubojacký ◽  
J. Holuša
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Ips Typographus ◽  
Flight Activity ◽  
Entire Period ◽  
Pheromone Traps ◽  
Nontarget Organisms ◽  
Thanasimus Formicarius ◽  
Spruce Stands

The numbers of nontarget arthropods captured by Theysohn pheromone traps (TPTs) and insecticide-treated tripod trap logs (TRIPODs) were compared; both kinds of traps were baited with pheromone lures Pheagr IT for Ips typographus. In 2010, 15 TPTs and 15 TRIPODs were deployed (with a 10-m spacing) in a forest in the northeastern Czech Republic. The TPTs and TRIPODs were inspected weekly during the entire period of I. typographus flight activity (30 April–1 October). The TRIPODs were sprayed with Vaztak 10 SC insecticide every 7 weeks; at each spraying, the pheromone evaporators were renewed. Higher numbers of entomophagous arthropods, including the predacious beetles Thanasimus formicarius and T. femoralis, were captured by the TRIPODs than by the TPTs. The number of Thanasimus spp. captured by TRIPODs was especially high at the end of April. The efficacy of TRIPODs for the control of I. typographus could be maintained while the kill of nontarget organisms could be reduced by deploying the evaporators 1 week later (in early May rather than in late April) in relation to the recommended date of dispenser installation.  

scholarly journals Norway spruce thinning experiment Polom (Eastern Bohemia) after 22 years of observation

2012 ◽  
Vol 50 (No. 1) ◽  
pp. 1-10
Author(s):  
M. Slodičák ◽  
J. Novák
Keyword(s):  
Norway Spruce ◽  
Comparative Method ◽  
Health Condition ◽  
Vegetation Zone ◽  
Experimental Stand ◽  
Young Stand ◽  
North Eastern ◽  
Spruce Stands ◽  
Long Term Experiment

Effects of thinning were studied in an air-polluted young stand of Norway spruce on Polom series in the Orlick&eacute; hory Mts. (North-Eastern part of the Czech Republic) founded in 1980 in 15 years old spruce stand established by planting with density of 3,500&ndash;4,000 trees per hectare in 1965. The stand lies at an elevation of 800&nbsp;m in the 6<sup>th</sup> beech with spruce forest vegetation zone. The expected survival of the experimental stand at the beginning of experiments was 40 years (air pollution danger zone B). The thinning experiment is based on a classical comparative method, i.e. on comparing the stands with different thinning regimes (regime with no thinning and regimes with heavy and very heavy first thinning with negative selection from below). Results of the long-term experiment confirmed the positive effect of investigated thinning programme on growth, health condition and resistance to snow-breaks of air-polluted Norway spruce stands in initial phases of disintegration.

scholarly journals Structure and accumulation of litterfall under Norway spruce stands in connection with thinnings

2012 ◽  
Vol 50 (No. 3) ◽  
pp. 101-108 ◽  
Author(s):  
J. Novák ◽  
M. Slodičák
Keyword(s):  
Norway Spruce ◽  
Climatic Factors ◽  
Basal Area ◽  
The Czech Republic ◽  
Temperature Growth ◽  
North Eastern ◽  
Dry Biomass ◽  
Spruce Stands ◽  
North Eastern Part ◽  
Precipitation And Temperature

The effect of thinning on the structure and accumulation of litterfall and holorganic horizons (L, F, H) in young Norway spruce stands was investigated. The research was conducted on a Norway spruce thinning experiment Polom (established in 1980) in the Orlick&eacute; hory Mts. (north-eastern part of the Czech Republic). In 1992, the monitoring of litterfall started on an unthinned control stand (plot 1) and on a comparative stand with very heavy thinning from below (plot 3). During the period of observation (age of the stand 27&ndash;37 years), the total weight of litterfall ranged between 1,800 and 4,800 kg/ha. The amount of litterfall was partly influenced by climatic factors (precipitation and temperature), growth processes (basal area increment) and thinning regimes in individual years. The results of the investigations showed that dry biomass accumulated under a 36 years old Norway spruce stand ranged from 9,200 to 11,300 kg/ha in horizon L, from 37,000 to 38,200 kg/ha in horizon F and from 138,300 to 146,400 kg/ha in horizon H. The quality (content of basic nutrients) of litterfall and material from holorganic horizons are discussed.

scholarly journals Current use of European beech (Fagus sylvatica L.) for artificial regeneration of forests in the air-polluted areas

2008 ◽  
Vol 54 (No. 4) ◽  
pp. 139-149
Author(s):  
P. Hobza ◽  
O. Mauer ◽  
M. Pop
Keyword(s):  
Air Pollution ◽  
European Beech ◽  
Vegetation Zone ◽  
Artificial Regeneration ◽  
Study Objective ◽  
The North ◽  
Pollution Damage ◽  
North Eastern ◽  
Spruce Stands ◽  
Air Pollution Damage

The paper deals with the use of European beech in the reconstruction of substitute species stands and in the regeneration of existing spruce stands in the air-polluted region of the north-eastern Krušné hory Mts. (air-pollution damage zones A, B, forest altitudinal vegetation zones 6 and 7, acidophilic sites). Twenty stand situations were analyzed during the study. The study objective was to compare the growth of European beech plantations in the Krušné hory Mts. with the growth of plantations of the same age in similar sites in the unpolluted region of the Bohemian-Moravian Upland (air-pollution damage zones C, D, forest altitudinal vegetation zone 6, acidophilic site). Each plant was assessed for eight growth and visually classified parameters and traits. Results of the survey showed that in the existing air-pollution and climatic situation, it is possible to switch to normal (shelterwood) beech management of higher elevations in the north-eastern Krušné hory Mts. The stands of substitute species and the current stands of Norway spruce may effectively eliminate injuries caused by late frost.

scholarly journals Attempt to Identify Sex Hormones in the Bodies of Selected Norway Spruce Bark Beetles

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 536
Author(s):  
Magdalena Kacprzyk ◽  
Bartłomiej Bednarz ◽  
Maciej Choczyński
Keyword(s):  
Gas Chromatography ◽  
Norway Spruce ◽  
Bark Beetles ◽  
Pheromone Traps ◽  
Steroid Compound ◽  
Qualitative And Quantitative ◽  
Spruce Bark ◽  
Spruce Stands ◽  
Males And Females

A gas chromatography technique was applied to the adults of Ips typograhus (L.) and Pityogenes chalcographus (L.) collected from pheromone traps placed in Norway spruce stands in southern Poland in distinguished population swarming periods for the qualitative and quantitative determination of steroid compound differences between insect sexes. Ten not yet identified for bark beetle compounds from the group of sterols, including cholestenone, 4,6-cholestadiene-3-one, choles-4-en-3,6-dione and 17β-Hydroxyandrosta-1,4-dien-3-one benzoate, which can potentially act as gender hormones were detected. The presence of ecdysone and 20-hydroxyecdysone in the bodies of the studied bark beetles was confirmed. However, slight differences in the content of ecdysteroids in the bodies of males and females may be only the remains of the insect’s metamorphosis. Due to the small differences in the extracted compounds between the females and males, their variability in concentrations during the swarming period seems to be useless as a basis for sex determination.

scholarly journals Soil factors affecting the growth and sustainability of spruce stands in the north-eastern Moscow region

2021 ◽  
Vol 862 (1) ◽  
pp. 012060
Author(s):  
O V Martynenko ◽  
V N Karminov ◽  
P V Ontikov ◽  
S A Korotkov ◽  
A N Maksimova
Keyword(s):  
Moscow Region ◽  
Soil Factors ◽  
Factors Affecting ◽  
The North ◽  
North Eastern ◽  
Spruce Stands
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