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The plants of spring barley and winter rapeseed were cultivated in 4 field rotation and in 4 fertilization treatments: 1) fertilized with NPK, 2) manure, 3) 1/2 NPK + 1/2 manure, 4) without any fertilizer. The content of trace elements in the above ground parts of barley and rapeseed depends on the developmental phase. Most Fe, Mn, Cu and Zn was found in the tillering phase of barley as well as in...
In present paper four cellulolytic mesophilic bacteria were isolated from the soil. On the base of morphology, physiology and biochemical properties the isolated strains were classified to genera Bacillus. The isolated strains of bacteria produce endo-β-glucanase aerobically and during growth under anaerobic conditions. The highest cellulolytic activity was observed in strains Nr 1 culture medium...
In the period 1993-1995 in the Experimental Station belonging to Olsztyn University of Agriculture and Technology the experiment was carried out aimed to study of growing buckwheat on soil of good wheat complex (cultivars Hruszowska, Emka and Kora) and rate of nitrogen applying (40 kg N ha before sowing + 0 during flowering, 20 + 20 or 0 + 40) effects on yield and seed sowing value of buckwheat. Seed...
Field experiment was carried out in 1992-1994 in the Agricultural Experimental Station Balcyny to study the effect of the quality seeds faba bean and the effectiveness of different fungicides applications on the growth, wholesomeness and yield of faba bean, Dino cultivar. Wholesomeness of the sown material and applied fungicides did not significantly affect on yield bean. Fungicides Sportak 45 EC...
The effect of water potential of pellets on germination of sugar beet seeds was investigated. Very low (negative) pellets water potential decreased speed of germination and germination ability in conditions of water shortage. As germination process proceeded, water potential of pellets increased gradually. Differences between water potentials of different types of pellets decreased during germination.
During an intensive screening programme, 30 strains of bacteria able to transform of aniline were isolated. The isolated bacteria could transform aniline both under aerobic and anaerobic conditions. On the base of TLC analysis it was possible to observe formation of two main metabolites in culture media of investigated strains of bacteria. These metabolites were named M-l and M-2. It was not possible...
During 3 years (1990-1992) the pot experiment on 15 soils with the red clover and Italian ryegrass were conducted. Each of soil was without Mg treatment or with treatment of 0.04 g Mg/1 kg of the soil. The soils were very differentiated in the content of various forms of magnesium (2.9-22.7 mg Mg/100 g of the soil), humus (0.9-2.7%) and soil particles <0.02 mm (6-25%). The content of different...
The studies were conducted in 28 years' old apple orchard in Łyczyn, situated on the lessives soil developed from light boulder clay. The influence of liming and nitrogen fertilization on applied the strips of fallow and grass, pH of the soil, content of organic carbon, carbon of humic acids and fulvic acids and carbon of humins was examined. Three levels of nitrogen fertilization were used: 40,140...
The effect of mineral N fertilization on the yield of seeds and the contents of protein, ash, fat and fibre in field beans Dino was investigated in 1992-1995. The field bean seeds came from experiments carried out in the Carpathian foothill region in the em :rons of Rzeszów. The results of investigation proved that N fertilization 0-80 kg/ha effected an increase of seeds yield and incerease protein...
In the conditions of pot experiment with maize and spring triticale the influence of high doses of phosphorus on the content of available phosphorus in two exhausted soils, received from long-term experiment (NK and CaNK), was investigated.The balance of phosphorus in the experiment showed that the expanses of fertilizers by unit of the increase of available phosphorus in soil was several time greater...
The studies were carried out in 1990-1992 in Jaktorów (central Poland) at a natural, moderatly wet site on mineral soil. The objects were four mixtures: early, medium-early, medium-late and late. The aim of this study was to evaluate the changes of botanical composition of meadow mixtures in yields during 3-year utilization. The choice appropriate cultivars made possible first cut different mixtures...
Changes in the mobility of Zn, Cd, Pb and Cu in medium sand soil depending on forms of salts: K₂SO₄ + MgSO₄ or KC1 + MgCl₂ were studied. Those salts were applied at varying soil pH-value (5,4; 6,2; 7,0). Studies were carried out in the leaching experiments using laboratory columns. Heavy metals were leached by simulation 600 mm of rainfall, over a 6 month periods. Leachates were collected and analysed...
On the basis of three-year studies, findings of nitrogen fertilization influence (40, 80,120,16 and 200 kg/ha) on the damage degree of winter rape caused by insectpest, abiotic stress and i diseases when a lack of protection against insecticides have been investigated. The damage degree of shoots and generative organs of winter rape caused by insecticides an paralysis by Botrytis cinerea has increased...
Occurrence of Azospirillum spp. in the rhizoplane of wheat, barley and corn fertilized with mineral N, organic fertilizers (slurry, manure) or mixed fertilizers was investigated. It was observed that mineral nitrogen in amounts 80, 120, 160 kg per ha results in elimination of Azospirillum from rhizoplane of barley and wheat. The same effect on bacteria in the rhizoplane of barley and corn was caused...
Maize was cultivated in five field cereal-maize crop rotation with: fodder maize, fodder maize, spring barley, oat and winter wheat. In 1991-1995 the weed infestation and level of maize yield were investigated in relation to applied herbicides, forecrop and with application or omission of deep ploughing. The kind of applied herbicides affected significantly both the weed infestation and yields. Deep...
The influence of 16 Hz and 50 Hz frequent magnetic field on the germination of seed of different agricultural crops (spring wheat, soybean and maize) under the stress condition (temperature 5°C or 10°C) was examined. The acceleration of germination and decrease of Pieper'si coefficient of seeds treated with frequent magnetic fiels in comparison with untreated seeds was found.
With processes analysis method a total energy input amounted to 21,147 MJ per ha of rape. The distribution of the energy, regarding the production operation was as follows: 73% - fertilization, 15% - harvesting, 6% - soil cultivation, 4% - weeding and protection, 2% - sowing. Total nitrogen dose is a deciding factor in the energy-consuming of fertilization. The use of 130 and 160 kgs of nitrogen per...
Praca stanowi wybrany fragment badań nad trendami i funkcjami produkcji głównych czynników plonowania i plonami zbóż, w okresie 30-lecia 1966-1995, w doświadczeniach oraz w państwowych i indywidualnych gospodarstwach produkcyjnych. Materiał źródłowy stanowiły wyniki doświadczeń odmianowych w stacjach doświadczalnych oceny odmian (SDOO) i badań ankietowych prowadzonych w IERIGŻ i własnych oraz dane...
A total content of zinc, lead and cadmium have been determined in the turf soils of the Podhale region. Zn and Pb contents in the mineral soils is not high, as a result of their low content in the parent rocks. A higher content, particularly of Cd, occurs in rendzinas and a gley-podzol ectohumus horizon. An accumulation of the examined metals in the upper horizons in relation to the parent rock, expressed...
In soybean cv. Fiskeby, among the Mi plants obtained after seed irradiation with fast neutron (at the dosis of 100 rad), a changed plant was found. The plant was considerably greater and formed much more seeds in comparison with control. In the next generations of the single plant, several macromutations were found. Among the mutants, following seem to be of greater breeding value: tall, giants and...
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