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The content of total iron, cuprum and boron in leaves of four chrysanthemum cultivars was studied in 12 growth cycles starting on the second day of each month throughout the year, from January to December. From the moment of potting, the plants were treated with a short day. In periods of naturally long days, the day was shortened to 10.5 hours using a black-out cover. No supplementary light was used...
The purpose of this paper was to determine the sunflower (Helianthus annuus L.) reaction to nickel depending on the metal concentration and penetration way, i.e. through roots or leaves. Nickel was introduced into the nutritional solution (intraroot application) at amounts: 0 (control), 35, 100 or 200 μM, while intraleaf application was performed by spraying plants with water (control) or nickel containing...
Roots of radish (Raphanus sativus L. var. radicula Pers.) of Rowa cv. seedlings grown in water cultures (pH 4.3) have been tested. Aluminum as AlCl₃·6H₂O has been applied at 0, 10, 20 and 40 mg·dm⁻³ concentrations. Inhibition of the growth of root elongation and the following changes of root morphology have been observed after aluminum treatment: browning and thickening, root cap elongation or falling...
The experiment was conducted at Fruit Experimental Station Samotwór near Wroclaw in the years 1998–2003, The aim of the experiment was to estimate the influence of six rootstocks on the growth, cropping and fruit quality of some new scabresistant apple cultivars. Two of the cultivars were Polish –Waleria and Sawa, and four of them were Czech – ‘Rosana’, ‘Rubinola’, ‘Rajka’ and ‘Topaz’. In the spring...
‘Katja’ apple trees on M.9 Emla, M.9 751, M.9 984 and P 60 were planted on a silty loam alluvial soil, strongly fixing K, in autumn 1992. They were grown on non-irrigated and irrigated plots, with different potassium fertilisation applied since 1980. Leaf samples were taken in the years 1999–2001. Irrigation had not any significant effect on leaf mineral element content. However, a tendency to increasing...
The assessment of black cherry seedlings root system was carried out at the Didactic-Experimental Establishment of the UWM in Olsztyn in September 2002. The seeds from which the examined seedlings were obtained had been sown into the ground on 2 October 2001. The following seeds were used for the experiment: fresh, sown into the ground immediately after obtaining them from fruit, partly dried seeds...
The influence of the addition of Potassium Ekosorb to black soil and sandy soil on water content in soils, gas exchange in leaves and yielding of strawberry plants cultivar Senga Sengana, Dukat, Kent and Elsanta was estimated in a field experiment. The obtained results show that the addition of hydrogel increased content of water in both types of soil; however, the effect was on average twice higher...
A differentiated ability of heavy metals accumulation was found between different lettuce cultivars. In combinations with an addition of lead and cadmium grown in autumn, the least amount of lead was accumulated by Agora, Regina and Bona cvs, while the least amount of cadmium was found in Saba and Bona cvs. In spring, Syrena cv. Accumulated the least amount of lead, while Marta cv. showed the least...
The six-year data of study of influence of soil application of biological and mineral fertilizers and their complex on the parameters of growth and cropping of apple variety Charavnitsa, budded on the semi-dwarfing 57-545 rootstock, were analyzed. It was found that application of biological fertilizers, the biological complex and the biological- mineral complex had a positive influence on parameters...
The study was carried out on two highbush blueberry cultivars: Bluecrop and Darrow in 2001 and 2002 seasons. Analyses for phytochemical contents in berries were made during commercial maturity of fruit. Concentration of anthocyanins and low molecular weight thiol compounds was significantly higher in ´Darrow´ berries in comparison to Bluecrop cv., irrespective of the harvest year. Tested cultivars...
Nitrogen (N) nutrition is a major means of controlling growth and fruiting of trees. In EU Countries, society’s expectations and political decisions have pushed for the adoption of sustainable ways to manage orchards. Guidelines for N management aim to limit fertiliser applications under threshold limits, in order to reduce N losses. Increasing the effectiveness of the recycling of the N present in...
Results of our experiments are interpreted according to fertilizing system developed by long-term experiments and investigations. The potassium fertilization and favourable N/K ratio can increase the frost tolerance of generative organs of fruit trees to some extent. The effect of suitable growing site can surpass the effect of fertilizers. Frequently, the increase of phosphorus and potassium levels...
In the years 1998–2000 an investigation was carried out on ‘Jonagold’ apples harvested from 6-year old trees grafted on M.9, M.26, P 2, P 22 and P 60. In 1998 and 1999 the average calcium content in fruit was significantly higher than in 2000. The highest calcium was observed in the peel of apples, in each of the year. The effect of the rootstock on the level of calcium in the calyx, core and pedicle...
The paper presents the results of chemical analyses of different organs of ‘Jonica’ apple trees. The trees were dwarfed with: rootstocks (M.9 and P60), and additionally, with bark grafting (in normal and inverted position), microinterstocks (M.9, P22, M.27) and retardant (Paclobutrazol). Microinterstock is an additional way of dwarfing, where a ring of bark taken from dwarfing rootstock is grafted...
The experiment was established at Felin Experimental Farm of Lublin Agricultural University. The aim of this study was to estimate the growth and the branched of the six stocks used in the production of the cherry and the sweet cherry young trees. Results of the study proved that F 12/1 and Colt stocks were the most vigorous, while P-HL 6 and P-HL 84 were characterised by the weakest growth. The best...
In 2001–2003 on Sandomierska Upland researches were done in order to estimate the influence of the rootstock and the age on the growth and yielding of the ‘Szampion’ trees. This cultivar was grafted on P60 and M.26 rootstock. It was stated that the ‘Szampion’ had given abundant crops (73–113 t/ha on average) due to magnificent conditions of Sandomierska Upland. The height of the yield depended in...
The object of the studies were saprophytic bacteria and fungi isolated from the soil after the cultivation of spring rye and common vetch. The studies were conducted in laboratory conditions. The antagonistic effect of the isolates of Bacillus spp., Pseudomonas spp., Trichoderma hamatum and Trichoderma koningii was determined towards such pathogenic fungi as Alternaria alternata., Botrytis cinerea,...
The study were carried out in the years 1996–1998 on the soil characterized as a good rye complex. The experiment was set according to the method of randomized sub blocks at 3 replications. The four following factors were examined: 1) cultivation technologies: a) conventional technology – control, b) with polyethylene sheeting, c) with polypropylene sheeting, d) with double shield of polypropylene...
The studies conducted in a growth chamber observed the protective effect of biopreparations such as Biosept 33 SL, Biochikol 020 PC and Polyversum, used as seed dressing for common bean and pea. The fungicide Zaprawa Oxafun T was used as a comparison, while the seeds that were not dressed constituted the control. The studied plants grew in the medium grown over with different species of fungi pathogenic...
As a result of the mycological analysis of vervein seeds, 17 fungi species were identified. They included typical saprobiotic ones, namely Aspergillus, Penicillium, Rhizopus, Trichothecium and pathogens such as Altenaria, Botrytis, Fusarium, Rhizoctonia. Fungi frome the genera Altenaria, Fusarium and Botrytis cinerea constituted the highest proportion. In in vitro study the following fungi were the...
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