Wyniki wyszukiwania - Biblioteka Nauki

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Kontraktion des Zellsaftes (Synarese) in den mit Holmes' Ribgrass virus infizierten Pflanzenzellen

100%

Milicic D. , Nikolic L. , Wrischer M.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1971

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tom 111

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Vegetation of the classes Stellarietea mediae and Agropyretea repentis in the vineyards of Bosnia and Herzegovina

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Kovacevic Z. , Nikolic L. , Nikolic-Doric E.

Acta Scientiarum Polonorum. Hortorum Cultus

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2017

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tom 16

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nr 1

EN

This paper shows the results of many years researches of the weed vegetation of vineyards in western Balkan which includes eight associations: Panico-Galinsogetum parviflorae Tüxen et Becker 1942, PanicoPortulacetum oleraceae Lozanovski 1962, Cynodono-Sorghetum halepensae (Laban 1974) Kojić 1979, Amarantho-Fumarietum Tüxen 1955, Diplotaxietum muralis Kovačević 2013, Convolvulo-Polygonetum aviculare Kovačević 2014, Erigerono-Setarietum glaucae Šumatić 1997 and Convolvulo-Agropyretum repentis Felföldy 1943. By projecting the plant communities on the main components (Principal Component Analysis) and comparing them to the ecological indices (variables), it shows that Cynodono-Sorghetum halepensae and Diplotaxietum muralis are similar according to their humidity (F) and temperature (T) requirements and Cynodono-Sorghetum halepensae and Diplotaxietum muralis are similar according to their chemical reaction of the soil (R). Amarantho-Fumarietum and Erigerono-Setarietum glaucae are the similar according to their demands for the light (L).

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Trapetum natantis Muller et Gors 1960 in hydromeliorative facilities in Serbia

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Dzigurski D. , Ljevnaic-Masic B. , Nikolic L.

Acta Societatis Botanicorum Poloniae

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2013

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tom 82

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nr 2

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The effects of physical-chemical water parameters on the Nymphaeion alliance development in northwestern Serbia

100%

Dzigurski D. , Ljevnaic-Masic B. , Nikolic L.

Acta Societatis Botanicorum Poloniae

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2014

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tom 83

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nr 2

EN

Nymphaeion alliance vegetation is dominant floating-leaved vegetation in the Danube–Tisza–Danube hydrosystem in northwestern Serbia and comprises Nymphaeetum albae, Nymphaeetum albo-luteae, Nymphoidetum peltatae and Trapetum natantis associations. Comparative analysis of physical-chemical water parameters on localities where these – in most parts of Europe endangered and vulnerable stands – develop showed that most phytocenoses are associated with specific habitat conditions. Of the analyzed water properties, the factors that cause Nymphaeion alliance phytocenoses differentiation are primarily pH, alkalinity and COD-MnO4. Formation of the Nymphaeetum albae stands is significantly associated with the highest values of pH, COD-MnO4 and alkalinity, and the lowest nitrate, nitrite, dissolved and the total phosphorus content values, in comparison to the other studied associations. Nymphoidetum peltatae stands develop in waters characterized by the lowest pH and COD-MnO4, low alkalinity, and the highest nitrate and nitrite values in relation to the other analyzed phytocenoses. Trapetum natantis stands, on the other hand, prefer the warmer sections of the canal network, neutral pH, and the highest values of BOD5, dissolved and total phosphorus. Habitat conditions in which Nymphaeetum albo-luteae stands develop are of the widest range in comparison to other investigated phytocenoses.

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Effect of cultural practices on weeds community in function of potato yield

75%

Ilic O. , Nikolic L. , Ilin Z. , Miskovic A. , Vujasinovic V. , Kukic B.

Acta Scientiarum Polonorum. Hortorum Cultus

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2016

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tom 15

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nr 5

EN

In the paper are presented results of three years studies performed in the period 2008–2010 on effects of cultural practices in stands of Panico-Galinsogetum Tx. et Beck. 1942. association in conventional potato production on the experimental plots in the vicinity of Becej (Northern Serbia). Composition of association Panico-Galinsogetum in experimental control variant builds 31 weed species. From Panico-Galinsogetum community, in the variant with one cultivation (with earthing up) without herbicide applying was found 22 weed species, and at the variant with two cultivation without herbicide 17 weed species, respectively. Herbicide treatments of potato crops as well as cultivation led to significant impoverishment of the weed flora, i.e., reduction in number of weed species, their coverage value, as well as the degree of presence in potato crop. Due to reduction of weed infestation, in variants untreated by herbicides, by application of two cultivations, achieved potato yield was for 8% higher in comparison to the variant with one cultivation. In variants treated by herbicides, potato yield was for 32% higher in relation to the yield on untreated experimental variants. The average number of tubers per plant achieved in variants treated by herbicides was for 40% higher in comparison to the number of tubers in untreated variants. In both cases, in comparison to control variant, cultivation resulted in significantly higher number of tubers per plant.

PL

Praca przedstawia rezultaty trzech badań przeprowadzonych w latach 2008–2010 i dotyczących wpływu praktyk uprawowych na stanowiskach Panico-Galinsogetum Tx. et Beck. 1942 w konwencjonalnej produkcji ziemniaka na poletkach doświadczalnych w pobliżu Becej (Północna Serbia). Skład Panico-Galinsogetum w wariancie kontroli doświadczenia obejmował 31 gatunków chwastów. W wariancie z jednym zabiegiem (z przysypywaniem ziemią) bez herbicydu znaleziono 22 gatunki chwastów z Panico-Galinsogetum, a w wariancie z dwoma zabiegami bez herbicydu stwierdzono 17 gatunków. Zastosowanie herbicydów w uprawie ziemniaka doprowadziło do znacznego zubożenia flory chwastów, tzn. do redukcji liczby chwastów, ich wartości rozprzestrzeniania się oraz obecności w uprawie ziemniaka. Dzięki zmniejszeniu zachwaszczenia w wariantach bez herbicydów zastosowanie dwóch zabiegów doprowadziło do plonu ziemniaka o 8% większego w porównaniu z wariantem z jednym zabiegiem. W wariantach z herbicydami plon ziemniaka był o 32% większy w porównaniu z plonem w wariantach bez zabiegów. Średnia liczba bulw na roślinę w wariantach z herbicydami była o 40% większa w porównaniu z liczbą bulw w wariantach bez zabiegów. W obydwu przypadkach zabieg dał istotnie większą liczbę bulw na roślinę w porównaniu z kontrolą.