Temat: nitrates(V) - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of Some Herbicides Application on Nitrates (V) Content in Potato Tubers
Autorzy:: Zarzecka, K.
Gugała, M.
Dołęga, H.
Mystkowska, I.
Baranowska, A.
Sikorska, A.
Głuszczak, B.
Powiązania:: https://bibliotekanauki.pl/articles/124025.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: herbicides
nitrates(V)
potato tubers
varieties
Opis:: A field experiment was carried out in the Agricultural Experimental Station Zawady (52°03’ N; 22°33’E), owned by the Siedlce University of Natural Sciences and Humanities in 2005–2007. The research was designed as a two factors randomized block with three replicates. The factors examined in the experiment included two potato varieties – Irga and Balbina and four weed control methods combined mechanical and chemical for herbicides application: Plateen 41,5 WG (metribuzin + flufenacet), Racer 250 EC (fluorochloridone), Sencor 70 WG (metribuzin), and control object – mechanical weeding before and after potato sprouting. The study was designed to test the influence of weed control methods on nitrates content in consumption potato tubers. The nitrates (V) content depended on the weed control methods, varieties and weather conditions throughout the growing season. The highest nitrates (V) content was determined when weeds were controlled mechanically and chemically using Sencor 70 WG. The study results demonstrated that Balbina had a higher concentration of nitrates (V) compared with Irga.
Źródło:: Journal of Ecological Engineering; 2016, 17, 3; 198-202
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Seasonal Variability of Selected Nutrients in the Waters of Lakes Niepruszewskie, Pamiatkowskie and Strykowskie
Autorzy:: Zbierska, A.
Przybyła, C.
Dwornikowska, Ż.
Powiązania:: https://bibliotekanauki.pl/articles/123772.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: accumulation of nutrients
lake eutrophication
nitrates(V)
water pollution
trophic state
Opis:: The paper presents the evaluation of seasonal and long-term changes in selected nutrients of three lakes of the Poznań Lakeland. The lakes were selected due to the high risk of pollution from agricultural and residential areas. Water samples were taken in 6 control points in the spring, summer and autumn, from 2004 to 2014. Trophic status of the lakes was evaluated based on the concentration of nutrients (nitrates, nitrites, ammonium, nitrogen and phosphorus) and indicators of eutrophication. Studies have shown that the concentration of nutrients varied greatly both in individual years and seasons of the analyzed decades, especially in Lakes Niepruszewskie and Pamiątkowskie. The main problem is the high concentration of nitrates. In general, it showed an upward trend until 2013, especially in the spring. This may indicate that actions restricting runoff pollution from agricultural sources have not been fully effective. On the other hand, a marked downward trend in the concentrations of NH4 over the years from 2004 to 2014, especially after 2007, indicates a gradual improvement of wastewater management. Moreover, seasonal variation in NH₄ concentrations differed from those of NO₃ and NO₂. The highest values were reported in the autumn season, the lowest in the summer. Concentrations of nutrients and eutrophication indexes reached high values in all analysed lakes, indicating a eutrophic or hypertrophic state of the lakes. The high value of the N:P ratio indicates that the lakes had a huge surplus of nitrogen, and phosphorus is a productivity limiting factor.
Źródło:: Journal of Ecological Engineering; 2016, 17, 4; 129-137
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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