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EN
The aim of this research was to determine the application effect of chlormequat (at concentrations of 460 mg dm- 3, 690 mg dm- 3, 920 mg dm- 3) and flurprimidol (at concentrations of 7.5 mg dm- 3; 15 mg dm- 3; 22.5 mg dm-3) on the vegetative growth, determining the quality of plants in blooming time, of Torenia fournieri 'Blue', Fuchsia hybrida in varieties 'Balkonkönigin’ and 'Eden Rock', Calibrachoa ×hybrida 'Cherry', Lobelia erinus 'Bavaria' and Petunia ×hybrida 'Shihi Purple'. Plants were sprayed twice – first treatment after 10 days after planting and second 25 days after first spraying. The influence of growth retardants was dependent on the plant species and variety as well as on the concentration of the preparation. The use of preparation type and its con-centration is dependent on the results we want to achieve. For obtaining the shortest main shoots with the largest number of side shoots, indicative of compacted habit, in the case of Torenia plants flurprimidol was applied at concentration 7.5 mg dm-3, and in the case of Calibrachoa - flurprimidol at concentration of 22.5 mg dm-3.
PL
Celem niniejszej pracy było określenie oddziaływania zastosowanego chloromekwatu (w stężeniach 460 mgdm-3, 690 mgdm-3, 920 mgdm-3) i fluropirimidolu (w stężeniach 7,5 mgdm-3; 15 mgdm-3; 22,5 mgdm-3) na wzrost wegetatywny, wpływający na jakość roślin w okresie kwitnienia, torenii ogrodowej (Torenia fournieri) 'Blue', fuksji mieszańcowej (Fuchsia hybrida) w odmianach 'Balkonkönigin’ and 'Eden Rock', kalibrachoa (Calibrachoa ×hybrida) 'Cherry', lobelii przylądkowej (Lobelia erinus) 'Bavaria' i petunii ogrodowej (Petunia ×hybrida) 'Shihi Purple'. Rośliny opryskiwane były dwukrotnie – pierwszą aplikację zastosowano po 10 dniach od posadzenia roślin, drugą aplikację po 25 dniach od pierwszego oprysku. Wpływ regulatorów wzrostu zależał zarówno od gatunku, jak i odmiany, a także od stężenia zastosowanych preparatów. Rodzaj i stężenie preparatów stosowanych w produkcji roślin zależeć będzie od efektu, jaki chcemy osiągnąć. Na uzyskanie najkrótszych pędów głównych z największą liczbą pędów bocznych, świadczących o zwartym pokroju, u torenii wpłynęło zastosowanie fluroprimidolu w stężeniu 7,5 mgdm-3, zaś u calibrachoa fluropirimidolu w stężeniu 22,5 mgdm-3.
EN
An innovative technology of superabsorbent application in a form of agrotextile filled with polymer, called geocomposite, is a solution that allows preserving the beneficial effect of using superabsorbents with simultaneous reduction of their negative influence on soil environment. Research was carried out in 2012-2014 on one year old cuttings of Rosa‚ White Meidiland’ and Berberis thunbergii ‚Green Carpet’ in unheated foil tunnel at the Research Station belonging to the Department of Horticulture at Wrocław University of Environmental and Life Sciences. First factor was the use of geocomposite, while the second was fertilization with full (3 g) and half (1.5 g) dose of Osmocote Plus 3-4M and 3 g of YaraMila Complex fertilizer. The aim of this study was to assess the influence of geocomposite application with the use of fertilizers on selected biometric features and fresh weight of plants. Geocomposite had the positive influence on tested shoots and roots biometric features of Rosa ‘White Meidiland’ and Berberis thunbergii ‚Green Carpet’, on the fresh weight of roots and total of both species, as well as on their root:shoot ratio. In both species there was a tendency to obtain the highest values with 1.5 g Osmocote fertilization.
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EN
The objective of the research was to assess the soil structure parameters (the index of cloddiness, of pulverization, of soil structure and the mean weighted diameter of soil aggregates – MWDa), as well as the selected chemical soil properties (pH, the content of organic carbon, total nitrogen and available potassium and phosphorus) in the three urban forests in Wrocław (SW Poland) depending on the occurrence of tree species (Quercus robur, Fagus sylvatica, Carpinus betulus). Soil samples were collected under the crown of each tested tree taxons, from three different sites, in three replications, separately in every forest. The soil was taken from two layers: 0−20 cm and 20−40 cm. The structure and weight of mechanically solid soil aggregates were determined using dry separation method. The content of total nitrogen was determined with Kjeldahl method, while phosphorus and potassium – with Egner−Riehm method. Organic carbon was determined with the use of elementary carbon analyser Behr C−50 IRF. The pH was determined by potentiometric method in 1M solution of KCl. The results were statistically analysed using the ANOVA. The correlation coefficient between the mean weighted diameter of soil aggregates and the content of organic carbon in the soil was calculated. The tree species occurring in the urban forests of Wrocław affected the soil structure parameters as well as changed the chemical properties of the soil. In both Mokrzański and Rędziński Forests the significantly higher index of soil cloddiness was observed under hornbeam crowns than in the oak and beech surroundings. In the Osobowicki Forest the highest index of cloddiness was determined on the soil with the oak. In general, higher values of index of soil structure and the mean weighted diameter of soil aggregates were noticed for the hornbeam sites than the oak and the beech ones. There was a significant positive correlation between the MWDa and the content of soil organic matter (r=0.711, Y=0.4569·x+1.6523). The differences in the content of organic carbon depending on tree species were observed in the Rędziński Forest, while in content of total nitrogen also in the Mokrzański Forest. The highest content of organic carbon and nitrogen was noticed in the soil under the hornbeam. The species of trees affected the content of phosphorus and potassium in the soil, but there was no unambiguous direction of changes.
EN
North American hackberry as a tree with resistance to Dutch elm diseases, pollutions and urban conditions is predisposed to becoming one of the common tree species for urban areas. Therefore, it is necessary to develop methods for nursery production of this species. The aim of this research was to determine the effect of fertilization and different methods of cultivation in rows with simultaneous use of geocomposite on the growth of North American hackberry in nursery production. Mechanical fallow in rows ha the most preferably influence, while living mulch with perennial ryegrass had rather negative impact on tested biometric features of North American hackberry. There was found a positive correlation between biometric features and foliar N content, as well as negative correlation between biometric features and soil salinity.
PL
Praca zaprezentowana w artykule przedstawia porównanie metod: okresowej i półokresowej wytwarzania pian na bazie albuminy jaja kurzego z dodatkiem inuliny w różnym stężeniu. Eksperymenty prowadzono w miesiarce planetarnej zmodyfikowanej przez dodanie dodatkowego króćca podającego powietrze. Przygotowane w ten sposób piany poddano testowi oscylacyjnemu w celu określenia ich cech reologicznych. Wykazano różnice w kształtowaniu się cech sprężystych i lepkich układów wytwarzanych klasycznie oraz poddanych dodatkowemu napowietrzaniu.
EN
The paper presents a comparison of methods: periodic and semi-periodic of production of foams based on ovalbumin with the addition of inulin at various concentrations. Experiments were carried out in a planetary mixer modified by the addition of an additional air supply pipe. Foams prepared in this way were subjected to an oscillatory test to determine their rheological characteristics. The differences in the formation of elastic and viscous features of the systems produced classically and subjected to additional aeration were shown.
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