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Nitrogen fertilization of soya bean is usually limited to the starter rate. This results from the ability to plant self-supply in atmospheric nitrogen, thanks to symbiosis with nodule bacteria from the genus Bradyrhizobium japonicum. These bacteria do not occur commonly in Polish soils. Therefore it is of great importance to inoculate seed material of soya bean with the bacterial inoculant – Nitragina. In 2011-2013 a strict field experiment was conducted located at the Experimental Station of Varietal Testing in Przecław. The test plant was soya bean of the cultivar Aldana. The following factors were taken into consideration in the one-factorial experiment: the control, Nitragina, the starter rate of nitrogen (25 kg·ha⁻¹), Nitragina with the starter rate of nitrogen (25 kg·ha⁻¹). The aim of this study was to estimate the effect of application of Nitragina and nitrogen fertilization on the chemical composition of soya bean seeds. It was found that the used starter rate of nitrogen had a significant effect on increase in the total protein content in seeds as compared with the control. The ash content increased after the application of the bacterial inoculant – Nitragina. Significant differences in the amino acid composition of soya bean seeds were found only after the combined application of nitrogen fertilization and Nitragina. The seeds then contained the most glutamic acid and methionine and less cysteine. Nitrogen fertilization and the inoculant Nitragina did not have an effect on the content of crude fat, fibre, macroelements, zinc and copper in soya bean seeds. The application of Nitragina with the starter rate of nitrogen increased the iron content as compared with the content determined in seeds of plants fertilized with nitrogen. Manganese concentration decreased after the combined application of Nitragina with the starter rate of nitrogen, as compared with seeds harvested from the control.
This paper describes the influence of initial dose of nitrogen and foliar nutrition on LAI (leaf area index) index and on infection of fungal pathogens of two morphotypes of faba beans. Occurrence of ascochyta blight (Ascochyta fabae), chocolate spots (Botrytis fabae) and faba bean rust (Uromyces fabae) was analysed. In the years 2011–2013 strict field tests were carried at the Experimental Station of Variety Evaluation in Przecław. The following factors were analysed: initial nitrogen dose (25 kg/ha), foliar nutrition (Basfoliar 6-12-6) and Granit and Amulet cultivars. The initial dose of nitrogen considerably increased LAI index in comparison with the control but the foliar nutrition did not influence LAI index as compared with the control. Amulet cultivar was better than Granit cultivar as far as tested parameters were concerned. According to the obtained results fertilization with the initial dose of nitrogen and foliar nutrition did not influence the infection severity of diseases caused by the examined fungal pathogens in respect to the control. On the other hand the cultivars were sensitive to the studied diseases at a different level and it varied in individual years. Granit cultivar as compared with Amulet was infected more by ascochyta blight and chocolate spots and less by faba bean rust.
The response of two cultivars of blue lupine – Zeus and Kalif – to the bacterial inoculant Nitragina was estimated in this study. Field experiment was carried out in 2009-2011. It was located at the Experimental Station of the Faculty of Biology and Agriculture in Krasne, owned by the University of Rzeszów. In comparison to the control, application of Nitragina results in prolongation of the budding and flowering stages, as well as a delay in reaching the full maturity of plants. After inoculation of seeds with nodule bacteria the number of pods per plant and TSW increased significantly, whereas the number of seeds per pod did not change. The use of Nitragina resulted in a significant growth in seed yield by 0.3 t·ha⁻¹, i.e. 13%,as compared with the control. In 2009 cultivar Zeus gave significantly higher yield than cultivar Kalif. In following years of the study the studied cultivars yielded on a statistically similar level. Cultivar Kalif, in comparison with Zeus, was characterized by a longer growing period and significantly smaller number of pods per plant. Total protein content in seed dry matter increased significantly under the influence of bacterial inoculant in relation to seeds obtained from not inoculated plants.
Możliwości zakładania plantacji energetycznych w województwie podkarpackim są duże, co wynika m.in. ze sprzyjających warunków siedliskowych i specyfiki regionalnych gospodarstw. Taka alternatywna działalność pozwoli na dalsze zróżnicowanie działalności na obszarach wiejskich, co obecnie stało się wręcz koniecznością. W naszym rejonie już z powodzeniem użytkowane są pierwsze nasadzenia roślin energetycznych, a uzyskane surowce wykorzystywane w obiektach małej i średniej mocy w generacji rozproszonej (indywidualne piece i lokalne kotłownie). Obawy budzi natomiast perspektywa zakładania intensywnych wielkoobszarowych plantacji roślin energetycznych dla energetyki zawodowej. Przed ich założeniem konieczne jest więc rozeznania regionalnych uwarunkowań i kompleksowe podejście do tematu aby zamierzone efekty były korzystne.
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