Wyniki wyszukiwania - AGRO

1

Przyrodnicze uwarunkowania produkcji rolniczej w regionie Zulaw Wislanych

100%

Nowicki J., Marks M.

Pamiętnik Puławski

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2003

|

tom 132

321-330

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Genetyczne, siedliskowe i maternalne uwarunkowanie jakosci nasion

100%

Gornik K., Grzesik M.

Postępy Nauk Rolniczych

|

1998

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tom 45

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nr 5

37-48

Seed quality depends on the influence of different factors on the plants, either before and after reaching physiological maturity by seeds. Among them the genetic factor is to be pointed out; it includes plant selection, hybrid breeding, quality of joining parent gametes and karyological seed structure. Environmental factors (water, temperature, light and fertilization) affect the seed quality by changing size, weight, chemical composition and the vigor of seeds. Particular effect on seed quality showed the matemal factor. Different location of seeds in a fruit, fructification and on the mother plant also modifies seed maturation, weight, germination and chemical composition.

3

Heterogeneity of species composition of forest floor vegetation along environmental gradient

86%

Stachurska A.

Ekologia Polska

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1994

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tom 42

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nr 3-4

233-261

4

Wartosc pokarmowa wybranych odmian 12 gatunkow traw pastewnych w zaleznosci od fazy fenologicznej, struktury masy i warunkow siedliskowych

86%

Debska-Kalinowska Z.

Rozprawy Naukowe i Monografie. Szkoła Główna Gospodarstwa Wiejskiego w Warszawie

|

1994

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tom 187

59

5

Sympozjum nt. Fotochemiczne procesy roslin w warunkach stresu srodowiskowego [Kazimierz Dolny, 8-9 czerwca 1995]

86%

Baszynski T.

Postępy Nauk Rolniczych

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1995

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tom 42

|

nr 6

135-137

6

Biologiczne i siedliskowe uwarunkowania uprawy gryki w Polsce

86%

Scigalska B.

Postępy Nauk Rolniczych

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2004

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tom 51

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nr 1

93-109

The article presented some major achievements in buckwheat cultivation in Poland over the last twenty years. During this period a considerable progress in breeding works has been observed. It is very important because overcoming the barriers of low yielding depends on the genotype and a complicated biology of flowering. Buckwheat breeding should aim - among the other - at improving the plant resistance to spilling and better regularity of fruit ripening, thus limiting yield losses. Further studies should be directed towards developing a morphological model of the plant and predicting the yields. Knowledge of interaction between agrotechnical measures and environmental conditions in the regions of buckwheat cultivation should provide a basis to developmg different variants of buckwheat breeding technology.

7

Perspektywy hodowli drzewostanow debowych w Nadlesnictwie Doswiadczalnym Zielonka

86%

Rutkowski P., Sliwa W., Kowal W.

Idee Ekologiczne

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2007

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tom 16

135-144

8

Produktywnosc pszenzyta ozimego na Mazowszu i Podlasiu w zaleznosci od czynnikow siedliskowych i agrotechnicznych

86%

Rozbicki J., Laudanski Z., Peskovski G.

Folia Universitatis Agriculturae Stetinensis. Agricultura

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2003

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tom 92

177-181

9

Produkcyjność górskich drzewostanów świerkowych średnich klas wieku w zależności od wysokości ich położenia nad poziomem morza

86%

Orzel S., Socha J., Ochal W.

Sylwan

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1999

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tom 143

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nr 05

37-45

10

Wpływ typu siedliskowego lasu na wielkość i masę igieł opadających w ciągu roku w 30-letnich drzewostanach sosnowych

86%

Turski M., Beker C., Jaszczak R., Szymanski A.

Sylwan

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2020

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tom 164

|

nr 02

The article presents the size and weight of needles in 30−year−old Scots pine stands over one year with regard to the site conditions in which they grow (fresh mixed coniferous and fresh coniferous habitats). Two rectangular 1−hectare sample plots, which differed from one another only with the habitat type, were set up in Maszewo forestry in the Cybinka Forest District (western Poland). The plots were divided into 100 one−acre subplots, which were ascribed numbers from 1 to 100. In order to pick 10 plots a random number generator was used. The middle of the chosen plot became the central point of the 1−acre circular sample plots, where the measurements of all diameters at breast height and the height of every fifth tree were taken. Moreover, it was also the place where a square needle collection container (20 cm high, 1 m² area) was located. The empty containers were placed in both experimental plots on 1st August 2017 and they were emptied on the first day of each month, throughout the entire year. The entire material was dried at the temperature of 65°C with an induced air flow. The needle mass was measured with the accuracy up to 0.001 g. Out of the samples collected each month, 300 needles were chosen at random in order to measure their length (after they were scanned with WinFOLIA program the size of each individual needle was established). Throughout the entire year, on fresh coniferous habitat the mass of the fallen needles was 2.8203 t/ha and it was by over 20% higher than it was determined for the fresh coniferous habitat. The lowest mass of the needle fall in each stand was in January, and the greatest in September on the fresh coniferous habitat, whereas in October on the fresh mixed coniferous habitat. In both of these cases, it was more than a half of the needle mass for the entire year. The average length of the fallen needles was in each month smaller on the fresh coniferous habitat and the differences between the analyzed stands were significant. The difference was the smallest (3.3%) in May, while the greatest (18.8%) in February. Moreover, significant differences in the length of the needles in the particular months in both types of stands were observed. The coefficient of variation for the needles length on the fresh mixed coniferous habitat ranged from 17.4 to 22.8%, whereas on the other habitat it varied between 14.2 and 21.6%. The mean of the coefficients of variation for the particular months was lower by 2.0% and for fresh coniferous habitat it reached 18.25%.

11

Influence of climatic biotope factors upon the forest stands in the Boatin biosphere reserve [Bulgaria]

86%

Brzezniak E., Kurzynski J.

Ochrona Przyrody

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1994

|

tom 51

173-184

12

Fizjologia owsa

86%

Wojcieska U.

Instytut Uprawy, Nawożenia i Gleboznawstwa w Puławach. Seria R

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1993

|

tom 304

53-94

13

Efektywnosc ekonomiczna plodozmianow zbozowych w roznych warunkach glebowych

86%

Krasowicz S.

Materiały Szkoleniowe. Instytut Uprawy, Nawożenia i Gleboznawstwa w Puławach

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1998

|

nr 70

71-80

14

Wplyw niektorych czynnikow na plonowanie i pracochlonnosc uprawy pszenicy ozimej w warunkach produkcyjnych

86%

Harasim A.

Pamiętnik Puławski

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1995

|

tom 106

35-46

15

Wplyw zawartosci azotu w glebie na szybkosc trawienia tkanek zwierzecych w dzbankach dzbanecznikow

72%

Bryk T.

Wszechświat

|

2010

|

tom 111

|

nr 07-09

246-248

16

Zawartość żelaza w roślinach uprawianych w warunkach zróżnicowanej zasobności gleb Lubelszczyzny w siarkę

72%

Kozlowska-Strawska J.

Ochrona Środowiska i Zasobów Naturalnych

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2010

|

nr 44

17

Morfologiczne i anatomiczne zróżnicowanie populacji kosodrzewiny (Pinus mugo Turra) z polskich Tatr wyrażone w cechach igieł

72%

Pawlaczyk E. M., Baczkiewicz A., Wawrzyniak P., Czlopinska M., Gonera P., Buczkowska K.

Leśne Prace Badawcze

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2017

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tom 78

|

nr 1

The main aim of this study was to describe the variation between the populations of the dwarf mountain pine Pinus mugo Turra based on the morphological and anatomical traits of their needles, and to investigate the relationship between the observed variation and environmental conditions (altitude and substrate).Two-year-old needles were collected from 180 individuals of six populations of P. mugo growing in the Tatra Mts. Two populations were classified as dense, located at 1360–1450 m altitude, and the remaining four formed loose clusters and were situated at 1500–1650 m altitude. Four of the populations are growing on granite and two on a limestone substrate. The natural variation of 10 morpho-anatomical and 3 synthetic needle traits was measured. In addition to descriptive statistics, the analyses of variance (ANOVA) with a Tukey test and principal component analysis were computed. We also estimated Pearson correlation coefficients for the examined needle traits and altitude as well as substrate. Our results indicate that the P. mugo populations differ significantly with regard to the investigated traits for which the Trzydniowiański Wierch population was the most distinct. The observed pattern of variability is largely caused by differences in stomatal traits and these features are positive correlated with altitude. Additionally, populations growing on granite have larger values for most of the examined traits compared to populations growing on limestone.

18

Podstawy planowania składu gatunkowego w lasach górskich na przykładzie Beskidu Niskiego

72%

Bruchwald A., Dmyterko E., Mionskowski M., Niemczyk M., Lukaszewicz J.

Sylwan

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2016

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tom 160

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nr 03

The study presents a method of planning species composition of forest stands in mountain areas on the example of Beskid Niski Mts. (south−eastern Poland). The focus was on the species composition of forest stands growing in different conditions, taking into account the type of forest habitat and terrain characteristics: altitude, exposition and slope. The research was based on data stored in the Information System of the State Forests. We used modified growth model for data processing and calculation of site index for the forests older than 60 years. The Beskid Niski Mts. are covered mostly by European beech (33.8%), silver fir (28.3%) and Scots pine (18.9%). Taking into account exclusively the productive capacity of individual forest stands, fir and spruce would be the most desirable species in analysed region. The Beskid Niski Mts. are characterized by a very small diversity of the habitat with domination of mountain fresh deciduous forest (LGśw, 92.1% of the area). We divided analysed region into four altitudinal zones that vary greatly in fraction of afforested area. Beech dominates in all zones and its share increases from the foothills to montane zone (fig. 5). Basing on a digital terrain model, the areal share of 10 landforms was determined for each stand and altitudinal zone (fig. 8). This enabled more detailed planning of species composition. However, it required the adoption of six specific assumptions including the need to maintain a suitable proportion of all tree species growing in the mountains, specifically the main forest tree species: spruce, fir and beech. The 5−stage project (preliminary, historical, current, planning, verification stages) consisting of planning species composition uses, in stage 4, detailed information on landforms. The project assumes that the fragments of forests where trees are expected to grow fast will be earmarked for endangered species. The model sees the need of planting the weaker tree species to be present in the forest ecosystems of the Beskid Niski. The proposed project will enable foresters−practitioners to plan the forest species composition for each of the forest districts in the Beskid Niski quickly. Such a programme might also be an integral part of the growth model of forests useful for forecasting and increasing timber resources.

19

Wplyw rodzaju gleby i stopnia jej zakwaszenia na pobieranie i zawartosc olowiu w roslinach

72%

Sykut S., Ruszkowska M., Wojcieska U., Kusio M.

Zeszyty Naukowe. Polska Akademia Nauk. Komitet Naukowy przy Prezydium PAN Człowiek i Środowisko

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1998

|

tom 21

57-62

20

Wybor lisci wskaznikowych do okreslania powierzchni lisciowej kukurydzy

72%

Borowiecki J., Filipiak K.

Pamiętnik Puławski

|

1992

|

tom 100

77-85

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