eng
Poznan University of Life Sciences, Poland
Acta Scientiarum Polonorum Silvarum Colendarum Ratio et Industria Lignaria
16440722
2020-09-30
19
3
article
EFFECT OF PLANTING METHOD ON PINE ROOT QUALITY IN FOREST CULTURES
Wojciech Szewczyk
1
Katarzyna Szewczyk
2
Marta Bełka
1
Katedra Fitopatologii Leśnej, Uniwersytet Przyrodniczy w Poznaniu
Katedra Techniki Leśnej, Uniwersytet Przyrodniczy w Poznaniu
Background. Proper planting should protect the seedling against adverse conditions and allow growth in forest conditions. When planting, regardless of the adopted method, it is most important to correctly position the roots and cover them with soil. The planting technique used is often not conducive to the proper formation of the root system, while it also increases the risk of infection.
Aim of the study. The aim of the study was to compare the arrangement of the root system and the values of selected biometric features of pine in plots regenerated using various techniques.
Material and methods. Collected research material in the form of young trees with roots was subjected to biometric measurements and was assessed for the degree of root deformation and for the degree of Lophodermium infection in pine trees. In addition, the root to shoot ratio was calculated.
Results and conclusions. On plots regenerated using planters, correctly formed roots were found in 25% of the studied population. In the other plots it was 17%. The DRP (degree of root positioning) coefficient took lower values for crops established using a planter compared to manual planting. The degree of Lophodermium infection proved to be relatively high. The best R/S ratios were obtained in plots with the lowest DP
(degree of paralysis) index. The research shows that pine roots during mechanical planting are less deformed.
The disease agent such as Lophodermium spp. could have affected the growth of young trees.
http://www.forestry.actapol.net/volume19/issue3/13_3_2020.pdf
Scots pine
planting method
root deformation
Lophodermium needlecast
eng
Poznan University of Life Sciences, Poland
Acta Scientiarum Polonorum Silvarum Colendarum Ratio et Industria Lignaria
16440722
2020-09-30
19
3
article
VASCULAR PLANTS OF THE KOBYLEPOLE ECOLOGICAL AREA IN POZNAŃ
Dorota Wrońska-Pilarek
1
Zenon Pilarek
2
Wojciech Dusza
3
Katedra Botaniki Leśnej, Uniwersytet Przyrodniczy w Poznaniu
Katedra Techniki Leśnej, Uniwersytet Przyrodniczy w Poznaniu
Wydział Leśny, Uniwersytet Przyrodniczy w Poznaniu
Introduction. The Kobylepole ecological area was established in 2018 on the basis of a wildlife inventory made in 2017, and is the newest object of this type in Poznań. It is an important hotspot of plant biodiversity in Poznań and so far no floristic documentation has been prepared for it.
Material and methods. In 2017 vascular plants of the area were studied and analyses included the historical-geographical and socioecological groups, life forms of plants as well as rare and threatened species and magnificent trees with monumental circumferences.
Results. In the studied area 270 taxa of vascular plants belonging to 61 families were inventoried. The native flora was represented by 207 taxa (76.7%) and the alien flora by 63 taxa (23.3%). Species of deciduous forests and shrubby communities as well as fresh and moderately moist meadows were the most numerous in the flora. Three species of rare and endangered plants for Wielopolska, and 57 rare and endangered species in the city of Poznań as well as 51 trees with monumental circumferences were found.
Conclusions. The studied object has a high floristic value. It is a refuge of deciduous forests species, rare and endangered species in the region and in the city, as well as magnificent trees with monumental circumferences.
In order to protect its flora effectively, it is necessary to protect the habitats of many plant species, by limiting walking and cycling to several major paths along with the infrastructure, as well as fighting and not introducing alien expansive and invasive species for this area.
http://www.forestry.actapol.net/volume19/issue3/14_3_2020.pdf
flora
urban ecology
nature conservation
biodiversity
eng
Poznan University of Life Sciences, Poland
Acta Scientiarum Polonorum Silvarum Colendarum Ratio et Industria Lignaria
16440722
2020-09-30
19
3
article
THE HEALTH STATUS OF SILVER FIR (ABIES ALBA MILL.) IN SELECTED LOCATIONS OF THE TATRA NATIONAL PARK AND THE KARKONOSZE NATIONAL PARK
Wojciech Pusz
1
Anna Baturo-Cieśniewska
2
Agata Kaczmarek
1
Tomasz Zwijacz-Kozica
3
Katedra Ochrony Roślin, Uniwersytet Przyrodniczy we Wrocławiu
Katedra Biologii i Ochrony Roślin, Uniwersytet Technologiczno-Przyrodniczy im. Jana i Jędrzeja Śniadeckich w Bydgoszczy
Tatrzański Park Narodowy, Zakopane
Background. Fir (Abies alba Mill.) is an important tree species in Polish forests, both from an economic and biocenotic point of view. In contrast to the Carpathians, where its share in stands is stable, in the Sudetes, as a result of massive deforestation in the past, its share in some regions fell below 0.5%. The “ecological disaster” that took place in the mountain forests of Lower Silesia in the second half of the 20th century contributed to the willingness to rebuild the Sudeten tree stands in the direction closer to the habitat and historical situation (Barzdajn, 2000). As a result of many projects related to the restitution of fir, in the Sudetes its share in forest stands has increased in recent years to several percent, depending on the forest district. Such an upward trend may cause the occurrence of diseases that cultivation and fir stands in the Carpathians have already started to struggle with.
Aim of the study. The aim of the study was to assess the health status of fir regeneration in permanent plots in the Tatra National Park and artificial plantings in the Karkonosze National Park.
Material and methods. The research was conducted from April to the turn of September and October 2019 (Tatra National Park) and in 2020 in the Karkonosze National Park. Health analysis in the TNP was carried out in July in 32 permanent plots with more than 30 Abies alba trees each. The research at KNP was carried out in 31 localities, including 3 localities belonging to the so-called conservation plots (conservation banks).
The methodology developed according to Kowalski and Andruch (2010) was used to assess the incidence of the disease, where the occurrence of disease symptoms and the location of symptoms were determined.
Results and conclusions. As a result of the conducted observations, symptoms of Herpotrichia needle browning of silver fir were found in all the examined areas in the Tatra National Park. Symptoms were recorded on 5 to over 60% of trees depending on the location. However, in the Karkonosze National Park, disease symptoms were found in 8 (out of 31) areas. It seems that the severity of disease symptoms in this part of Poland is much lower than in the Carpathians. However, the condition of fir stands should be constantly monitored, because in the Sudetes the reconstruction of spruce stands is underway to increase the share of fir in stands, which may cause deterioration of its health in the next years.
http://www.forestry.actapol.net/volume19/issue3/15_3_2020.pdf
silver fir
health status
Tatra Mts.
Karkonosze Mts.
eng
Poznan University of Life Sciences, Poland
Acta Scientiarum Polonorum Silvarum Colendarum Ratio et Industria Lignaria
16440722
2020-09-30
19
3
article
SOLARIZATION AS A METHOD OF COMBATING SOIL PATHOGENS IN FOREST NURSERIES
Marta Bełka
1
Jolanta Behnke-Borowczyk
1
Katedra Fitopatologii Leśnej, Uniwersytet Przyrodniczy w Poznaniu
Chemical plant protection products are used in forest nursery production to provide healthy seedlings. However, their long-term and incorrect use may lead to undesirable changes in soil microbiota. Moreover, methods such as crop rotation, biological control, fungicides, or breeding for disease resistance do not provide full control over all plant pathogens present in a given nursery. Solarization is a hydrothermal soil decontamination process involving passive solar heating. It occurs through a combination of physical, chemical and biological mechanisms and equals to chemical soil disinfestation. Acting on a properly prepared surface, solar radiation can significantly contribute to the reduction, or complete elimination of pathogens and pests, including bacteria, fungi and nematodes. Each new method of seedling protection in forest nurseries enriches the already very limited arsenal of pathogen control methods, and this work aims to familiarize readers with the process of soil solarization, strengths and limitations of this process, as well as its potential applicability in practice.
http://www.forestry.actapol.net/volume19/issue3/16_3_2020.pdf
soil solarization
IPM
forest nurseries
soilborne pathogens
plant protection
eng
Poznan University of Life Sciences, Poland
Acta Scientiarum Polonorum Silvarum Colendarum Ratio et Industria Lignaria
16440722
2020-09-30
19
3
article
BEAVER ACTIVITY AND ENVIRONMENTAL AND HYDROLOGICAL CHANGES IN FOREST AREAS
Anna Krysztofiak-Kaniewska
1
Rafał Sobczak
2
Cezary Beker
2
Department of Forest Engineering, Poznań University of Life Sciences; Poznań, Poland
Department of Forest Management, Poznań University of Life Sciences; Poznań, Poland
The purpose of the study was to present researchers’ knowledge of the impact of beavers on hydrological conditions in forests. A historical outline, reasons for the drastic decline in the beaver population in Poland and Europe, as well as positive examples of the restoration of the Eurasian beaver population are presented.
The paper provides information given by authors from countries with beaver populations on the impact of these rodents on the natural environment, the way in which it transformed it, as well as threats, losses and benefits of beaver activity brought to man.
http://www.forestry.actapol.net/volume19/issue3/17_3_2020.pdf
European beaver
Canadian beaver
environment
water
eng
Poznan University of Life Sciences, Poland
Acta Scientiarum Polonorum Silvarum Colendarum Ratio et Industria Lignaria
16440722
2020-09-30
19
3
article
HEIGHT OF A SEVEN-YEAR OLD SCOTS PINE PLANTATION IN FRESH CONIFEROUS FOREST SITE TYPE DEPENDING ON DIFFERENT METHODS OF SITE PREPARATION
Jakub Jakubowski
1
Roman Gornowicz
1
Włodzimierz Stempski
1
Wydział Leśny i Technologii Drewna, Uniwersytet Przyrodniczy w Poznaniu
The aim of the study was to determine the impact of selected soil preparation methods and methods of utilising logging residues on the height of a 7-year-old Scots pine stand (Pinus sylvestris L.). Measurements of tree height were carried out in September 2015 in the Bierzwnik Forest District. The analysis included three logging residue utilisation methods (complete removal; leaving twigs and utilising bigger branches; comminution of all residues) and three methods of soil preparation (ploughing ridges; scarifying with a rotary tiller; ploughing furrows with LPZ-75). The analyses showed a statistically significant effect of the soil preparation methods and the interaction of soil preparation methods and logging residue utilisation methods on the height of 7-year-old pines. There was no statistically significant effect of logging residue utilisation on the height of 7-year-old pines. The optimal variant for the height of pine trees was to combine ploughing furrows with an LPZ-75 plough and complete removal of logging residues. The lowest average values of tree height were recorded in the variant of scarifying with a rotary tiller and leaving twigs while utilising bigger branches.
http://www.forestry.actapol.net/volume19/issue3/18_3_2020.pdf
Scots pine plantation
soil preparation
height
cutting area
utilisation of logging residues