Autor: Wilczewski, E. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Accumulation of bioelements in the biomass of plants grown as stubble catch crops depending on the sowing time
Autorzy:: Wilczewski, E.
Szczepanek, M.
Powiązania:: https://bibliotekanauki.pl/articles/13868.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:: Journal of Elementology; 2018, 23, 1
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: The effect of sowing time/method on yield and uptake of macroelements in autumn regrowth of genotypes of red fescue
Wpływ terminu/sposobu siewu na plon oraz pobranie makroskładników w odroście jesiennym genotypów kostrzewy czerwonej
Autorzy:: Szczepanek, M.
Wilczewski, E.
Skinder, Z.
Powiązania:: https://bibliotekanauki.pl/articles/15373.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:: The yield of autumn regrowth of grasses and the content of macronutrients are affected by environmental and agronomic factors as well as genetic traits of species and varieties. Biomass yield and the concentration of mineral elements determine their uptake by plants. The aim of this study was to evaluate dry matter yield as well as the content and uptake of N, P, K, Ca and Mg in the autumn regrowth of three varieties of red fescue in the first two production years depending on different sowing time and methods. This study was based on a strict field experiment conducted in 2004-2007, located in the Province of Kujawy and Pomorze ( województwo kujawsko - pomorskie ) (53°09 c N, 17°35 c E). The first factor was the time/method of sowing (spring: pure or with spring barley, and summer: in mid- and late July and in mid-August), while the second factor was the variety (chewings, slender creeping and strong creeping fescue cultivars). An average of 3.5 t ha ?1 and 3.9 t ha ?1 of regrowth of dry matter was obtained in the first and second production years, respectively. A delay of the sowing date until summer caused an increase in yield during the first production year in comparison with the spring sowing. In both years, the creeping variety gave the highest yield. The yield of the chewings variety was higher than that of the slender creeping one in the second production year. The concentration of N in the strong creeping variety was lower than that of the chewings one in the first year, and also in relation to the slender creeping variety in the second production year. The chewings and slender creeping varieties were characterized by a higher concentration of P than the strong creeping cultivar. The K and N uptake in the average regrowth yield from the first and second production years was the highest (106.3 kg ha ?1 K and 62.7 kg N); the P and Ca uptake was low (12.5 and 11.3 kg ha ?1 ) and that of Mg was the lowest (6.6 kg ha ?1 ). A rise in the regrowth yield caused an increase in the N, P, K, Ca and Mg uptake in summer sowing crops compared with spring ones in the first year and a high uptake of these elements by the strong creeping variety in both production years. In the first year, owing to the high N and P concentration, the uptake of these elements by the chewings and strong creeping fescue was similar. In the second year, the uptake of N, P, K, Ca by the slender creeping variety was the smallest due to a strong reduction in yield. In the first year, with no differences in the regrowth yield and K, Ca and Mg content, the uptake of these nutrients by the chewings and slender creeping varieties was similar.
Źródło:: Journal of Elementology; 2013, 18, 3
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Effect of a biostimulant on the accumulation of Mg in winter oilseed rape under different mineral fertilization doses
Autorzy:: Szczepanek, M.
Wilczewski, E.
Siwik-Ziomek, A.
Powiązania:: https://bibliotekanauki.pl/articles/962619.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:: Increased fertilization doses stimulate biomass production and raise plants’ demand for nutrients. Biostimulants may improve absorption of nutrients by plants and prevent nutrient deficiency resulting from their lower concentrations in biomass. The aim of this study was to evaluate Mg accumulation in winter oilseed rape at flowering, fruit development and ripening as affected by the application of a seaweed biostimulant, at different doses of NPK tested in two field experiments, with and without S fertilization. The field experiments were set up in Alfisol, on adjacent plots, in Poland (53°13′N. 17°51′E). In the first experiment, S was used in a dose of 36 kg ha-1; in the second experiment there was no S application. In both experiments, different NPK doses were used: high 180 N, 70 P, 132 K (kg ha-1) or low 144 N, 35 P, 66 K (kg ha-1). In addition, the biostimulant Kelpak SL was applied (in doses 2 dm3 ha-1 in autumn + 2 dm3 ha-1 in spring) or there was no biostimulant application. It was found that the response of oilseed rape to the biostimulant and NPK fertilization level, expressed by the amount of dry matter production and Mg accumulation in whole plants, was more favourable in the experiment with the S application prior to sowing the crop. The biostimulant increased the dry matter production while maintaining a similar Mg concentration in plants as compared with the control. Moreover, in S-fertilized oilseed rape, an increase in the Mg accumulation in response to the biostimulant was the highest (22%) at the ripening stage, whereas in the plants not fertilized with sulphur (the second experiment), this increase was significant only at fruit development. In oilseed rape fertilized with S, higher NPK doses caused an increase in the dry matter production and a decrease in the Mg concentration in the aerial parts at the flowering and fruit development stages. At the ripening stage, with a similar response of dry matter, the Mg concentration in plant remained unchanged, hence the Mg accumulation in biomass was by as much as 26% higher than after the application of lower NPK doses.
Źródło:: Journal of Elementology; 2017, 22, 4
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Effect of nitrogen rate and stubble catch crops on concentration of macroelements in spring wheat grain
Wpływ dawki azotu i międzyplonów ścierniskowych na zawartość makroelementów w ziarnie pszenicy jarej
Autorzy:: Wilczewski, E.
Szczepanek, M.
Piotrowska-Dlugosz, A.
Wenda-Piesik, A.
Powiązania:: https://bibliotekanauki.pl/articles/15406.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:: The aim of this study was to determine the effect of different rates of nitrogen ferti- lizer and stubble catch crops on the content of nitrogen, phosphorus, potassium and ma- gnesium in the grain of spring wheat. Field experiment was carried out in 2005-2008 at Moche3ek near Bydgoszcz (53° 13' N, 17° 51' E) on the Alfisols soil classified as a very good rye complex and IIIb quality class. Nitrogen fertilization was applied at the rates of (kg N ha ?1 year ?1 ): 0; 40 (before sowing), 80 (40 kg before sowing and 40 kg in BBCH 31-32 stage), 120 (60 kg before sowing and 60 kg in the BBCH 31 ? 32 stage) and 160 (60 kg before sowing and 60 kg in BBCH 31-32 stage and 40 kg in BBCH 45-47 stage). Stubble catch crops (field pea and oilseed radish) were sown in the period from 3 to 11 of August in 2005 to 2007. After 70-77 days of plant growing, the whole biomass was plowed in as green manure. Spring wheat cv. Tybalt was sown following the catch crop,between March 30 to April 11 in 2006 to 2008. Nitrogen fertilization affected the concentrations of N, P and Mg in grain of spring wheat. Every 40 kg increment of nitrogen fertilization per ha resulted in a significant increase in the N content in wheat grain. The concentration of Mg in spring wheat grain was significantly higher when nitrogen fertilization was dosed at 120 or 160 kg per ha than at lower doses. The phosphorus content in grain of wheat grown after field pea catch crop was not related to nitrogen fertilization rates, while after the radish and in the control (without catch crop), it was significantly higher at 120 and 160 kg N per ha than at 40 kg N per ha. No effect of nitrogen fertilization on the K concentration in grain of spring wheat was found. Mean values from the three years of the N and Mg content in the grain of spring wheat were significantly influenced by the stubble catch crops. The effect of this factor on the content of macroelements in spring wheat grain was detected only in 2008, which had very low rainfalls during the growth of plants. Under these conditions, the stubble catch crops caused an increase in the content of N and a decrease of P and Mg in grain.
Źródło:: Journal of Elementology; 2013, 18, 3
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Effect of biostimulants and storage on the content of macroelements in storage roots of carrot
Autorzy:: Szczepanek, M.
Wilczewski, E.
Poberezny, J.
Wszelaczynska, E.
Keutgen, A.
Ochmian, I.
Powiązania:: https://bibliotekanauki.pl/articles/961596.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: biostimulant
storage
macroelement content
carrot
root
Opis:: The processes of growth and development as well as the yield quality of crops depend on the abundance of soil nutrients and the ability of the plants to uptake nutrients. Nutrients can be taken up more efficiently after application of a biostimulant. The effect of biostimulants depends on the content of their active substance as well as the dose, timing and frequency of their application. In 2009-2011, a controlled field experiment was conducted in the Kuyavian-Pomeranian Province (53°13′N; 17°51′E). The objective was to analyse the effect of the timing and doses of foliar application of the biostimulants: Kelpak SL (seaweed extract containing phytohormones) and Asahi SL (a mixture of phenolic compounds) on the content of macroelements: Mg, P, Ca, N, Na and K in the storage roots of carrot directly after harvest and after storage (for 6 months in chambers with controlled conditions: temp. +1°C, Rh 95%). Kelpak SL was applied once in a dose of 3 or 2 dm3 ha-1, twice in doses of 3+2 dm3 ha-1 or 2+2 dm3 ha-1 at intervals of two or four weeks, as well as three times in doses 3+2+2 dm3 ha-1 or 2+2+2 dm3 ha-1, every two weeks. Asahi SL was applied twice in doses 0.5+0.5 dm3 ha-1,at a two-week interval. The first application of biostimulants was always performed at the 4-leaf stage. The study showed that the biostimulants Kelpak SL and Asahi SL, irrespective of the dose and frequency of application, increased the N concentration in the carrot roots. An increase in the Mg, P, Na and K concentrations was observed after a single application of Kelpak SL in a dose of 2 dm3 ha-1, and in the Ca concentration after a dose of 3 dm3 ha-1. Asahi SL did not affect the Mg, P, Ca and Na concentrations but increased the K content in the roots. After storage, the content of Mg, Na and K decreased, whereas the concentration of P, Ca and N did not change. Directly after harvest and after storage, positive correlation between N and K and between N and Na, as well as between Na and K was indicated.
Źródło:: Journal of Elementology; 2015, 20, 4
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Wilczewski, E." wg kryterium: Autor

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język