Wyniki wyszukiwania

1

Differentiation of tree diameters at strip roads in a young pine tree-stand

100%

Stempski W., Jablonski K.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2014

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tom 13

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nr 1

The investigation was conducted in a 32-year-old pine stand, growing on a fresh coniferous site in western Poland. The strip roads in the stand had been designed and cut along tree rows 5 years prior to the investigation. The analysis focused on trees growing at 12 strip roads, in 3-meter-wide stripes on both sides of the strip roads and in control zones, half-way between each two neighbouring strip roads. The trees growing on the stripes along the strip roads were divided into three zones corresponding to tree rows. The first zone (I) was formed by trees growing in the row directly at the strip roads, while the zones two (zone II) and three (zone III) were formed by trees growing in the second and third rows of trees away from the strip roads, respectively, on both sides of the strip roads. The average distances of the zones two and three from the strip roads were 1.5 and 3 m, respectively. The diameters at breast height (DBH) of all the trees growing in the respective zones were measured. Moreover, the widths of the strip roads were measured, which resulted in dividing the strip roads into two groups: the wider strip roads (average width 3.6 m) and the narrower ones (average width 2.9 m). The statistical analysis showed significant differences in DBH values between the analysed zones, for nine of the strip roads. Both in the case of the wider strip roads, as well as in the case of the narrower ones, the trees growing directly along the strip roads were usually thicker than the more distant trees. A statistically significant difference between the DBH values of trees from zone I and II was found for one strip road. In most cases the trees from zone I were statistically thicker than the trees growing in the control zone.

2

Aboveground biomass of young Scots pine on degraded soil in the context of use for energy purposes

100%

Listosz A., Wegorek T.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2013

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tom 10

3

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Application of sheep wool in preventing damage caused by deer in young forest plantations

100%

Bernacka H., Swiecicka N., Naworska N.

Acta Scientiarum Polonorum. Zootechnica

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2015

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tom 14

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nr 4

4

The effect of stocks on the quality of young trees and the nursery efficiency of cherry trees cv. 'Lutowka'

100%

Baryla P., Kaplan M.

Acta Scientiarum Polonorum. Hortorum Cultus

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2006

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tom 05

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nr 1

Studies were conducted at the Experimental Station of the Agricultural University of Lublin in the years 1997–2000 the aim of which was to estimate the quality of young trees and the nursery eficiency of cherry trees on 6 stocks: P-HL 84 (A), P-HL 6 (C), Colt, F 12/1, mahaleb cherry (Prunus mahaleb L.) and sweet cherry (Prunus avium L.). The highest percentage of the taken buds was found on P-HL 84, P-HL 6 and F 12/1. The budding of the enumerated stocks every year makes it possible to achieve the greatest nursery efficiency. More than 78% of first quality trees were obtained on stocks Colt and mahaleb cherry. The worst quality cherry trees of cv. ‘Łutówka’ were obtained on vegetative clones P-HL 84 and 6 as well as F 12/1.

5

Age-related changes in leaf area index of young Scots pine stands

84%

Jagodzinski A. M., Kalucka I.

Dendrobiology

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2008

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tom 59

57-65

We studied the chronosequence of six Scots pine (Pinus sylvestris L.) plantations (6-, 9-, 11-, 15-, 17-, and 20-years-old) to examine the changes in leaf area index (LAI) over stand age. The study site was located on a mine spoil heap (outer dumping ground) in the Belchatow lignite open-cast mining district (central Poland). The main goal of the study was to analyze LAI changes over stand age in a chronosequence of young Scots pine stands and to test the relationship between LAI estimates derived from a LAI-2000 Plant Canopy Analyzer and site-specific allometric equations. In addition, we tried to determine whether LAI estimated by a LAI-2000 PCA can be used to accurately estimate forest biomass. We hypothesized that LAI-2000 PCA underestimates LAI of the stands, and that stand age (and linked stand parameters) may influence the range of the hypothetical underestimation due to changes in biomass allocation. Our study revealed that LAI was highly dependent upon stand age and tree density (p<0.0001) regardless of the way how LAI was determined. Moreover, we found that LAI estimated by LAI-2000 PCA significantly correlates with stand biomass per area; the highest coefficients of determination were found for total aboveground biomass, aboveground woody biomass, and stem biomass. This means that data obtained by LAI-2000 PCA are good predictors of stand biomass in the young stages of stand development. In contrast to our prior assumption, the results showed that LAI-2000 PCA overestimates leaf area index. The relative differences between the values obtained with LAI-2000 and those calculated on the basis of the site-specific allometric equations increase with age. This may reflect changes in crown architecture over age caused by enlarging tree dimensions and over - crowding of trees leading to deterioration of light conditions inside the canopy.

6

The effect of prohexadione-Ca on shoot growth and cropping of young apple trees of Jonagold cv.

84%

Basak A.

Roczniki Akademii Rolniczej w Poznaniu. Ogrodnictwo

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2007

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tom 41

261-268

7

Preliminary assessment of the ecochemical condition of soils after fertilization of younger spruce Picea abies (L.) H. Karst. stands in the Beskid Slaski and Zywiecki Mts.

84%

Malek S., Januszek K., Barszcz J., Blonska E., Wanic T., Gasienica-Fronek W., Kroczek M.

Folia Forestalia Polonica. Series A . Forestry

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2011

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tom 53

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nr 2

The experimental plots were located in the middle forest zone (900– 950 m) on two nappes of the flysch Carpathians: Magura (the Ujsoły Forest District) and Silesian (the Wisła Forest District) in the spruce stands of age class 21– 40 years. Serpentinite was introduced in the autumn of 2008 on all plots while other fertilizers (N, P, NP and NPK) in the spring of 2009. Based on the chemical composition of soil solutions collected in lysimeters placed at the depth of 20 cm in the autumn 2008 and the spring and autumn 2009, ecochemical parameters were calculated: acid neutralization capacity (ANCaq), alkalinity (ALK), the degree of soil acidity (Ma%), acidic cations (Ma), saturation of the exchangeable complex of the soil solid phase (Mb) with alkalis, saturation with alkalis (BS), molar relations Ca/Al, Mb/Al, BC/Al. After the winter, soil solutions became acidic, especially in the Wisła Forest District. The saturation of the studied soils demonstrates moderate flexibility of soils in the Wisła Forest District in relation to acid load, and high flexibility of the Ujsoły soils. The opposite trend was observed for the degree of acidity of soils. Acid neutralization capacity and alkalinity of the waters showed significant variations in soil pH even in the case of small variations in the composition of the solution, if they were caused by the inflow of the anions of NO3 - and SO4 2-. After application of the fertilizers, an increase of Mg, Ca and Mb was noted in the soil solution, determined in the overlaying highly acidic organic horizons trough the ion-exchange buffering mechanism of highly protonated functional groups with high buffering capacity. Highly improved content of Mg in a soil, and in some cases – also the content of N, P and K, present potential improvement of forest growth capacity without the hazard of adverse side-effects of liming. Aluminum stress in the spruce is unlikely, while trees in the control plots in the Wisła Forest District may already be sensitive.

8

Biomass dynamics in young silver birch stands on post-agricultural lands in Central Poland

84%

Zasada M., Bijak S., Bronisz K., Bronisz A., Gaweda T.

Drewno. Prace Naukowe. Doniesienia. Komunikaty

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2014

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tom 57

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nr 192

The paper analyses the production and allocation of biomass in young, spontaneoussilver birch afforestation occurring on post-agricultural lands in the Mazowszeregion (central Poland). We investigated 114 sample plots of age varying from 1 to 19 years. During the first 15 years after their establishment on abandoned farmland, the naturally regenerated silver birch stands produced on average approximately 75 tons of dry biomass per hectare. The major (50–70%) part of this biomass was stored in the tree stems and this share increased with age. The fractions of biomass in the foliage and roots decreased over time, while the share of biomass in the branches remained rather constant. The significant age-dependency of the allometric relationships suggested the need to use age-sensitive biomass expansion factors to estimate the biomass from the stem volume.

9

Density of bio fuel - of energy chips from dendromass of Populus plantation-grown coppice

84%

Banski A.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2015

|

tom 90

10

Analysis of the yield of selected apple varieties in the first years after the planting the orchard

84%

Maslowska W., Liberacki D.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2018

|

tom 50

|

nr 3

11

The relationship between growth indices of young pear trees

84%

Ostrowska K., Chelpinski P.

Folia Horticulturae

|

1997

|

tom 09

|

nr 2

12

Biological control of European cockchafer larvae [Melolontha melolontha L.] - preliminary results

84%

Lakatos T., Toth T.

Journal of Fruit and Ornamental Plant Research

|

2006

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tom 14

|

nr Suppl.3

13

Response of young apple trees to different orchard floor management systems

84%

Treder W., Klamkowski K., Mika A., Wojcik P.

Journal of Fruit and Ornamental Plant Research

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2004

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tom 12

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nr Spec.ed.

14

The growth and efficiency of young plum trees of Cacanska Najbolja and Valor cultivars in dependence on the rootstock applied and the budding method

84%

Stachowiak A., Swierczynski S.

Roczniki Akademii Rolniczej w Poznaniu. Ogrodnictwo

|

2001

|

tom 34

15

Influence of two rootstocks on the growth, efficiency and the content mineral elements in the leaves of young peach trees in a nursery

84%

Swierczynski S.

Roczniki Akademii Rolniczej w Poznaniu. Ogrodnictwo

|

2001

|

tom 34

16

Effect of increased nitrogen depositions and drought stress on the development of young Norway spruce Picea abies (L.) Karst. stands

67%

Palatova E.

Dendrobiology

|

2004

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tom 51 Supplement

The effects of drought stress, stress by increased nitrogen depositions and the combined effect of the two stress factors on the growth of Norway spruce Picea abies (L.) Karst. were studied in two stands. The drought stress was induced by reducing atmospheric precipitations by 60% and the increased nitrogen depositions were simulated by repeated applications of ammonium sulphate at a rate corresponding to 100 kg N ha–1 year–1. All stress factors under study affected the height increment of the above-ground part, the length and colour of needles, and the biomass, vertical distribution, functionality and mycorrhizal infection of fine roots. The root system responded to the simulated stresses right from the the very first year of their action, exhibiting a greater damage than the above-ground part of the plant. Drought acted as a stress factor stronger than the nitrogen depositions themselves. The strongest impact was recorded in the simultaneous influence of the stress factors.

17

Phenological reactions of young streetside trees of Ginkgo biloba L. in Warsaw

67%

Swoczyna T., Borowski J., Zambrzycka A.

Annals of Warsaw University of Life Sciences - SGGW. Horticulture and Landscape Architecture

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2009

|

tom 30

18

Monitoring young urban trees tolerance to roadside conditions by application of the chlorophyll fluorescence technique

67%

Swoczyna T., Kalaji H. M., Pietkiewicz S., Borowski J., Zaras-Januszkiewicz E.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2010

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tom 545

Urban environments create unfavourable conditions for tree growth, particularly for street trees, thus, the selection of tree species to severe growth conditions tolerance is of high importance. In our research, the chlorophyll a fluorescence technique was applied to monitor the physiological state of young trees of 8 species and cultivars growing in a street environment in Warsaw. Trees growing 2-3 m away from a road were compared to others growing minimum 8 meters away. Most of the measured parameters concerning photosynthesis, i.e. F0 and FV/FM revealed satisfying values in Acer campestre, Gleditsia triacanthos, Platanus x hispanica cv. Acerifolia and Pyrus calleryana cv. Chanticleer and close proximity to a road had no negative effect on the photosynthetic apparatus. Roadside trees of Ginkgo biloba, Tilia cordata cv. Greenspire and Tilia x europaea cv. Pallida often revealed higher F0 values and lower FV/FM values than the control trees. The results allowed us to distinguish the tolerant species growing under harsh streetside environmental conditions. The chlorophyll a fluorescence technique was found to be a convenient and rapid method for application in in situ experiments.

19

Acclimatization of European beech (Fagus sylvatica L.) leaves first year after planting into different light conditions of young spruce stand

67%

Spulak O.

Folia Forestalia Polonica. Series A . Forestry

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2011

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tom 53

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nr 2

The study presents the results of investigation on reaction of beech (Fagus sylvatica L.) leaves observed next year after planting seedlings in different positions in a young spruce stand located in upper mountain conditions. The methods of chemical analyses and assessments of chlorophyll fluorescence were applied with the aim to evaluate a course of leaf adaptation. In the young spruce stand located in the Karkonoše Mts, bare root beech seedlings after cultivation in full light were planted into three main positions to spruce trees (under the crown, within crown perimeter and in stand gaps). Next year after planting, the total biomass, leaf nutrient content and chlorophyll fluorescence parameters were evaluated. The beech trees planted under spruce (Picea sp.) crowns had significantly lower specific leaf mass and the mean leaf area was decreasing from shade to sun. Differences in nutrient contents were not significant between the treatments. We found significantly higher values of minimal (F0) and the maximum fluorescence (Fm) as well as of the maximum quantum yield of PSII photochemistry (Fv/Fm) in the leaves of beeches growing under the spruce crown. Significant differences among treatments were found also in the courses of the values of maximum fluorescence yield Y(II) and nonphotochemical quenching (NPQ). Our study indicated that bud forming processes are only partially responsible for physiological properties of beech leaves evaluated next year after planting. Photosynthetic performance is also influenced by actual growing conditions. A great part of acclimation occurs already in the first year after planting (change of the light conditions). We speculate that this phase of gradual acclimation of the assimilation apparatus can be one of the reasons of physiological weakening of the plant after planting to different light environment.

20

The influence of agro-technical methods used in the nursery on quality of planting material and precocity of bearing in young apple trees in the orchard

67%

Gudarowska E., Szewczuk A.

Journal of Fruit and Ornamental Plant Research

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2004

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tom 12

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nr Spec.ed.

Ograniczanie wyników

Differentiation of tree diameters at strip roads in a young pine tree-stand

Aboveground biomass of young Scots pine on degraded soil in the context of use for energy purposes

Application of sheep wool in preventing damage caused by deer in young forest plantations

The effect of stocks on the quality of young trees and the nursery efficiency of cherry trees cv. 'Lutowka'

Age-related changes in leaf area index of young Scots pine stands

The effect of prohexadione-Ca on shoot growth and cropping of young apple trees of Jonagold cv.

Preliminary assessment of the ecochemical condition of soils after fertilization of younger spruce Picea abies (L.) H. Karst. stands in the Beskid Slaski and Zywiecki Mts.

Biomass dynamics in young silver birch stands on post-agricultural lands in Central Poland

Density of bio fuel - of energy chips from dendromass of Populus plantation-grown coppice

Analysis of the yield of selected apple varieties in the first years after the planting the orchard

The relationship between growth indices of young pear trees

Biological control of European cockchafer larvae [Melolontha melolontha L.] - preliminary results

Response of young apple trees to different orchard floor management systems

The growth and efficiency of young plum trees of Cacanska Najbolja and Valor cultivars in dependence on the rootstock applied and the budding method

Influence of two rootstocks on the growth, efficiency and the content mineral elements in the leaves of young peach trees in a nursery

Effect of increased nitrogen depositions and drought stress on the development of young Norway spruce Picea abies (L.) Karst. stands

Phenological reactions of young streetside trees of Ginkgo biloba L. in Warsaw

Monitoring young urban trees tolerance to roadside conditions by application of the chlorophyll fluorescence technique

Acclimatization of European beech (Fagus sylvatica L.) leaves first year after planting into different light conditions of young spruce stand

The influence of agro-technical methods used in the nursery on quality of planting material and precocity of bearing in young apple trees in the orchard