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Effect of manure application on the development dynamics of proteolytic and ammonification bacteria under maize (Zea mays L.) cropping

100%

Niewiadomska A., Klama J., Wolna-Maruwka A., Sulewska H.

Acta Scientiarum Polonorum. Agricultura

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2010

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tom 09

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nr 1

The objective of this study was to investigate the developmental dynamics of proteolytic and ammonification bacteria at different variants of manure application under maize (Zea mays L.). The trials were conducted at the Swadzim Experimental-Didactic Station (52°26’ N; 16°44’ E) which belongs to the University of Life Sciences in Pozna. The experiment was established in accordance with the random block design method and comprised 14 soil objects, each in four replications. The investigations were singlefactorial and the factor levels comprised 8 methods of manure application in the case of maize grown for silage and 6 methods, when maize was grown for seeds. Proteolytic and ammonification bacteria numbers depended on the method of manuring and the date of the performed analyses. The highest numbers of proteolytic microorganisms under maize cultivated for silage were observed during the phase of emergence in the combination of winter catch crop (rye + vetch). In the case of maize cultivated for seeds, the highest number of protein-degrading microorganisms was recorded during the phase of emergence in the combination of crop rotation with wheat.

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Occurrence of nitrogen cycle bacteria in the Biebrza River

100%

Frak M., Kardel I., Jankiewicz U.

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

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2012

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tom 44

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nr 1

This paper of the selected groups of nitrogen cycle bacteria in the Biebrza River was analysed. In the water samples the quantity of ammonifying bacteria, nitrifying bacteria, proteolitic bacteria was estimated and also selected water quality indicators were analysed. Large quantities of proteolitic bacteria and ammonifying bacteria were found while the quantity of nitrifying bacteria was very small. Water quality analyses proved high TOC concentrations and low nitrate as well as nitrite concentrations. It was found, that the mineral forms of nitrogen being the intensive product of organic matter degradation is not released (low concentrations of ammonia), but it is accumulated in microorganisms cells. Low concentrations of ammonia are limiting for the number of nitrifying bacteria. The seasonal character of the occurrence of all analysed bacteria groups was as well found. The analytical procedure used was adjusted for bacteriological research on rivers of low anthropopressure.

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Zastosowanie stałego podłoża z mocznikiem do ilościowego oznaczania pałeczek z rodzaju Proteus w wyrobach garmażeryjnych

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Burzynska H.

Roczniki Państwowego Zakładu Higieny

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1962

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tom 13

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nr 3

4

The effect of humic substances on nitrogen cycle bacteria

80%

Piechowiak M., Kraska M.

Oceanological and Hydrobiological Studies

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2008

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tom 37

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nr Suppl.1

5

Comparison of the microbiological qualities of turkey myofibrillar protein isolate, mechanically recovered turkey meat and turkey breast

80%

Malicki A., Bruzewicz S., Zechalko-Czajkowska A., Szybiga K., Kopec W., Trziszka T.

Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine

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2006

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tom 09

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nr 4

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Culturable proteolytic bacteria and the activity of leucine aminopeptidase in river ecosystem

80%

Skorczewski P., Mudryk Z. J.

Polish Journal of Ecology

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2009

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tom 57

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nr 3

561-565

The study determined the numbers and distribution of culturable heterotrophic and proteolytic bacteria and the level of leucine aminopeptidase activity in the water of the Słupia River within the town of Słupsk (Northern Poland). River Słupia is 138.6 km long and flowing into the Baltic Sea. The average water discharge of the river is 15.5 m³ s⁻¹ and its slope is about 1.3% which gives it a mountainous character. The numbers of culturable heterotrophic bacteria was determined on iron-peptone agar (IPA) medium and the numbers of culturable proteolytic bacteria was assayed in IPA medium enriched with gelatin. Potential leucine aminopeptidase activity was carried out with the use of fluorescently labelled model substrate MCA-leucine. The numbers of heterotrophic bacteria ranged between 0.33 to 183.0  10³ cells cm⁻³ (maximum in spring, minimum in winter); the abundance of culturable proteolytic bacteria ranged 0.50 to 31.8  10³ cells cm⁻³ and the maximum was noted in spring, the lowest in summer. The activity of extracellular leucine aminopeptidase ranged from 2.34 to 6.87 μM MCA dm⁻³ h⁻¹ and the highest value was noted in spring while the lowest were noted in winter and summer. The values of bacteriological parameters and of leucine aminopepidase activity tended to be higher below the sewage treatment plant. The bacteriological parameters for River Słupia were compared with the relevant data for other river ecosystems.

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Active bacteria in transitions of nitrogen compounds in pond water during the wintering of European catfish [Silurus glanis L.] fry

80%

Lewandowska D., Golas I., Zmyslowska I., Teodorowicz M.

Polish Journal of Natural Sciences

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2003

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tom 14

8

Liczebnosc mikroorganizmow proteolitycznych oraz aktywnosc respiracyjna gleby plowej wzbogaconej gnojowica

61%

Jezierska-Tys S.

Acta Agrophysica

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2000

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tom 38

95-104

Badania przeprowadzono w doświadczeniu modelowym na glebie płowej wytworzonej z piasku gliniastego mocnego. Celem pracy było zbadanie wpływu dawki 500 kg S ha-1 r-1 na liczebność bakterii i grzybów proteolitycznych, aktywność respiracyjną i dehydrogenazową w glebie płowej wzbogaconej gnojowicą (60 m3 ha-1 r-1). Przeprowadzone badania wykazały, że zastosowane zasiarczenie z równoczesnym wzbogaceniem gleby gnojowicą wpływało stymulująco na liczebność bakterii proteolitycznych. Na liczebność grzybów proteolitycznych istotny hamujący wpływ miała tylko dawka kwaśnego opadu Aktywność respiracyjna gleby płowej nie wykazywała różnic między badanymi obiektami doświadczalnymi. Aktywność dehydrogenazowa gleby zasiarczonej i wzbogaconej gnojowicą była najwyższa i istotnie różniąca się od pozostałych obiektów doświadczalnych.

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Distribution and activity of proteolytic bacteria in the surface and subsurface water layers in the region of the Gdansk Deep

61%

Mudryk Z., Donderski W.

Oceanological Studies

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1996

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tom 25

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nr 4

10

Short-term variations in the concentrations of suspended particles, chlorophyll a and nutrients in the surface seawater layers of the Gdansk Deep

41%

Falkowska L., Latala A.

Oceanologia

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1995

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