Wyniki wyszukiwania

1

ABC wapnowania gleb uprawnych

100%

Pecek J.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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2006

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nr 03

22

2

Accumulation of zinc and cadmium from Stetin area. Part II. Arable soils and plant in the proximity exit roads

88%

Janukowicz H.

Biological Bulletin of Poznań. Supplement

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1996

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tom 33

3

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Carbon balance in arable grey forest soils

75%

Larionova A. A., Rozanova L. N., Yevdokimov I. V., Blagodatsky S. A.

Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura

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2003

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tom 58

4

Occurrence of total and sulphate sulphur in arable soils of Poznan region and their reaction

75%

Jakubus M., Czekala J.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1998

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tom 456

In this work are presented the results of investigations related to total and sulphate sulphur contents in humus horizon of arable soils of 15 Poznań province and their soil reaction. On the basis of obtained results it was found that analysed soils of municipalities contained from 9.0 to 182.0 mg total S/100 g of soil. The data follows that the content of total sulphur was differentiated not only between soils of researched municipalities but also in limit of each other. The quantitative differences of sulphate sulphur, which one content range from 0.03 to 19.7 mg S-SO₄/100g of soil corresponded with the differentiation of total sulphur. Soil reaction of the researched soils like sulphur was differentiated and ranged from pH 3.8 to 7.9.

5

Content of selenium in arable soils near Wroclaw

75%

Patorczyk-Pytlik B., Kulczycki G.

Journal of Elementology

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2009

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tom 14

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nr 4

The material for this study consisted of 60 soil samples collected from the arable layer of cultivated fields located in the vicinity of Wrocław. The samples varied in their properties and reflected a whole range of soil types to be found in the region of Lower Silesia. The examinations proved that selenium content in arable soils near Wroclaw ranged from 81 to 449 μg⋅kg-1 and the average value of Se content in these soils was 202 μg⋅kg-1. The lowest Se content appeared in sandy soils (174 μg⋅kg-1), while the highest value was found in loamy soils. The mean value of Se content calculated for this group of soils was 228 μg⋅kg-1. Selenium content in soils varied to a high degree (V=42%). The value lower than 100 μg⋅kg-1, assumed as a critical one for the quality of plant yield, was recorded for 4 samples, while in 33 soil samples the Se content fell in the range of 101- -200 μg⋅kg-1 and in 14 samples it ranged from 201 to 300 μg⋅kg-1. Only 9 soils out of these subjected to investigation characterized selenium value higher than 300 μg⋅kg-1, i.e. the value regarded as medium soil fertility. Se content in soils was highly correlated with their content of silt and clay, as well as colloidal parts and also with the amount of C and total content of such chemical elements as P, S, Fe, Cu, Zn and Ni.

6

The influence of soil properties and land use on the phosphate level in soils from Lubelskie region

75%

Banach A., Wolinska A., Blaszczyk M., Stepniewska Z.

Polish Journal of Agronomy

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2015

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nr 22

Phosphorus is an important life-supporting nutrient and therefore it is often applied in fertilizers. As a result, its pool in soil may increase due to the presence of various elements effectively binding P, making it unavailable to plants. Each soil exhibits many characteristics important in P cycling, with the aeration state (redox potential and moisture), pH, and the presence of N, Ca, and Fe being the most important. In addition, agricultural practices, e.g. fertilization, may strongly affect P pools in the soil. We studied 7 different, both cultivated and natural, soil types from Lubelskie region. We found that agricultural practices strongly affected the soil aeration state, pH, and moisture level reducing them signifi cantly. As a result, phosphate concentrations increased signifi cantly up to 10 mg kg-1 in comparison to ca. 2– 4 mg kg-1 in non-cultivated soils. This was caused by changes in soil characteristics depending on the soil type (availability of N, Ca, and Fe). The levels of nitrates increased up to 50 mg kg-1, favouring P immobilization. It could be concluded that the soil aeration state (related to the manner of soil use) is important in P cycling through the effect on other soil characteristics, which differ among soil types.

7

Wykorzystanie metody 'Test KCl - 40' do oszacowania zasobnosci gleb uprawnych w siarke przyswajalna dla roslin

75%

Jakubus M.

Rośliny Oleiste - Oilseed Crops

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2000

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tom 21

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nr 2

547-556

8

Po zbiorach zbadaj gleby gospodarstwa

75%

Pecek J.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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2006

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nr 09

20

9

Badania porównawcze właściwości gleb leśnych i uprawnych wytworzonych z piasków i lessów

75%

Smal H., Ligeza S.

Acta Agrophysica

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2001

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tom 56

10

The suitability of 1M HCl and 2M HNO3 for heavy metals extraction in arable soils under threat of contamination

75%

Diatta J. B., Grzebisz W., Potarzycki J.

Roczniki Akademii Rolniczej w Poznaniu. Melioracje i Inżynieria Środowiska

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1997

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tom 19

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nr 1

11

Soil solution chemistry in the profiles of forest and arable soils developed from loess

75%

Smal H., Misztal M., Bril J.

Polish Journal of Soil Science

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2000

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tom 33

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nr 1

12

Environmental factors effecting the concentration of microelements in the soil solution of Polish arable soils

75%

Labetowicz J., Rutkowska B.

Polish Journal of Soil Science

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2002

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tom 35

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nr 1

Based on a large number of samples collected from within Polish territory, the concentration of microelements (Fe, Mn, Zn, Cu, B, and Mo) in a soil solution of arable soils of Poland was measured and evaluated, and the possibility of various soil factors as causal agents of this concentration was assessed.

13

Selected physical properties of fallowed mountain soils

75%

Letkowska A., Bogacz A.

Acta Agrophysica

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2000

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tom 35

The object of investigations were mountain soils derived from various parent rocks which were fallowed during five and ten years, in comparison to arable soils. The aim of the research was to characterise physical properties of the fallows and adjoining arable fields. The obtained results point to higher values of porosity, bulk density as well as content of total carbon of fallows in comparison to arable soils. On the analysed fallows far higher growth of weed with high contribution of many-year species was found,

14

Correlation between the abundance of cellulolytic fungi and selected soil properties

75%

Kornillowicz-Kowalska T., Iglik H., Wojdylo B.

Acta Mycologica

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2003

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tom 38

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nr 1-2

15

The content of total cadmium and its fractions in arable land of the Podlasie province

63%

Lukowski A., Wiater J.

Polish Journal of Soil Science

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2015

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tom 48

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nr 1

The aim of this study was estimation of total cadmium content and its fractional composition in arable soils, depending on their physicochemical properties. The research material consisted of samples taken from arable soil in 81 points within then Podlasie Province. The content of total cadmium in soils and its fractional composition was determined with the BCR method. It was found that the total content of cadmium was typical for uncontaminated soils and ranged from 0.11 to 1.59 mg kg⁻¹. The percentage of acid in the soluble and exchangeable fraction fluctuated at around 10% on average. The reducible fraction comprised about 20% and oxidizable fraction 26%, on average. Most of the cadmium was in the residual fraction. The factors that influenced the fractional composition of cadmium were determined. For the very light and light soils it was mainly the content of magnesium and pH, while for medium soils it was the organic carbon and magnesium content, content of soil fraction <0.02 mm, as well as the percentage of Cd in reducible fraction.

16

Sorpcyjne właściwości gleb Wysoczyzny Siedleckiej

63%

Kalembasa D., Pakula K., Jaremko D.

Acta Agrophysica

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2011

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tom 18

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nr 2[193]

Celem badań była ocena sorpcyjnych właściwości (kwasowość całkowita – Hcał, suma kationów zasadowych – S, pojemność sorpcyjna – T, stopień wysycenia gleby zasadami – V oraz zasadowe kationy wymienne – Ca2+, Mg2+, K+, Na+) w 36 profilach uprawnych gleb brunatnych, płowych, opadowo-glejowych i deluwialnych Wysoczyzny Siedleckiej. Właściwości sorpcyjne badanych gleb były zróżnicowane miedzy poszczególnymi typami i w obrębie danego profilu; były charakterystyczne dla gleb mineralnych wytworzonych z materiału zwałowego i wodnolodowcowego zlodowacenia środkowopolskiego. Największe wartości kwasowości całkowitej (Hcał) w badanych glebach stwierdzono w poziomach próchnicznych (Ap, AE), a sumy kationów zasadowych (S), pojemności sorpcyjnej (T) i stopnia wysycenia gleby zasadami (V) w poziomach wzbogacania (Bbr, Bt) i skały macierzystej (C, Cgg, CG). Zawartość kationów zasadowych w badanych gleb można ułożyć w następującym szeregu malejących wartości: Ca2+ > Mg2+ > K+ > Na+; udział kationów Ca 2+, Mg2+ i K+ zwiększał się, a kationów Na+ zmniejszał wraz z głębokością profilu glebowego. Analiza statystyczna wykazała istotny wpływ zawartości węgla związków organicznych (Corg), frakcji iłowej (ø < 0,002 mm) i odczynu gleby na właściwości sorpcyjne badanych gleb.

17

Activity of phosphomonoesterases and the content of phosphorus in the eroded Luvisols of orchard and arable soils

63%

Kobierski M., Lemanowicz J.

Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska

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2016

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tom 25

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nr 3[73]

18

Proba klasyfikacji zachmurzenia w aspekcie skladowych bilansu promieniowania i typow cyrkulacji

63%

Wilczek Z.

Acta Agrophysica

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2000

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tom 34

199-207

Prezentowana praca stanowi rozwinięcie zagadnienia wpływu zachmurzenia na składowe bilansu promieniowania krótkofalowego i długofalowego powierzchni pola uprawnego w ciągu dnia oraz nocy. Na podstawie stopnia pokrycia nieba chmurami, wysokości podstawy chmur oraz ich rodzaju, tj. elementów warunkujących dopływ i utratę energii cieplnej, zaproponowano tzw. energetyczną klasyfikacją zachmurzenia w której zdefiniowano cztery podstawowe typy różnicując warunki dzienne oraz nocne w każdym z nich. Założenia teoretyczne zostały zweryfikowane podczas analizy materiału obserwacyjnego Regionalnego Biura Meteorologicznego w Dęblinie dla 1995 r. Określono roczne przebiegi liczby godzin występowania poszczególnych typów zachmurzenia w aspekcie okresu wegetacyjnego oraz w nawiązaniu do procesów powstawania poszczególnych rodzajów chmur. Poczyniono próbę powiązania występowania energetycznych typów zachmurzenia z typami cyrkulacji w celu wyodrębnienia sytuacji synoptycznych o najbardziej korzystnych warunkach nefologicznych dla bilansu promieniowania pola uprawnego.

19

Content of chosen heavy metals in garden and arable soils

63%

Makuch I.

Polish Journal of Soil Science

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2014

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tom 47

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nr 2

The studies were conducted to determine the impact of the anthropogenic factors in the form of horticultural cultivation and urban environment on soils of allotment and household gardens and the role of humus substance in binding heavy metals and the distribution of elements in a soil profile. The research covered the area of south-eastern Poland, where 3 cities were selected for sandy soils and 3 for silty soils. The high enrichment factor of humus horizons for Cd, Cr and Ni was observed in sandy soils but it was lower in the silty soils. Significant negative correlation coefficients between fractional composition of humus and content of Cd, Cr and Ni were only observed in sandy soils. There were no significant relations in terms of the content of mercury.

20

Analysis of the production potential of soil as a basis for planning a framework for sustainable soil management

63%

Stredanska A.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Inżynieria Środowiska

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2006

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nr 28

193-202

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