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The present research was carried out over 1997-2000 on good rye (Agricultural Experiment Station Lipnik in the vicinity of Stargard Szczeciński) and good wheat (Agricultural Experiment Station Ostoja in the vicinity of Szczecin) soil suitability complexes in a static crop-rotation experiment, which compared the effect of soil cultivation systems: A - plough, B - ploughless, C direct sowing (Lipnik...
A plant bioassay technique was developed for detecting residues of isoxaflutole in the soil. Radish (Raphanus sativus L.), oilseed rape (Brassica napus L.), wheat (Triticum aestivum L.) and maize (Zea mays L.) were grown in treated soil with various concentrations of isoxaflutole. A Hadley fine sandy loam (Typic Udifluvents) soil (South Deerfield, MA) was used for bioassay study. Bioassay was conducted...
The study-compared effect of cytokinins on morphogenesis and ploidy of plants regenerated in vitro from explants of Stanola F1, ATZ and ATM pepper seeds. The aim of defining the morphogenetic potential of the studied genotypes, half-seed explants consisting the proximal part of the hypocotyl and radicle were put onto the MS medium containing BAP (5.0 mg.dm-3), 2iP (2.5 mg.dm-3), ZEA (2.5 mg.dm-3),...
The quantitative and qualitative composition of the soil microorganisms depends, amongst others, on whether monoculture or crop rotation is applied. The main phytopathogen infecting flax (Linum usitatissimum L.) is the Fusarium genus as well as fungi of the Alternaria, Phoma, Botrytis, Verticillium, Rhizoctonia genera, however soil hyperparasites of the Trichoderma genus can control them successfully...
The aim of the present study was to determine a correlation between nitrogen fertilisation and leaf chlorophyll content as measured using an optical instrument a chlorophyll meter and an effect of different nitrogen fertilisation doses on the yield and quality of leaves of the Wilica cultivar of the Virginia tobacco. To this purpose, a field experiment was conducted, in which varied nitrogen...
The aim of the pot experiment was to determine the impact of timing of nitrogen application in the form of ammonium nitrate enriched with the 15N isotope, on the uptake of 15N by spring barley plant and its distribution in grain, awns, leaves, straw, and roots. 1.21 g of N per pot containing 10 kg of the soil was applied at two doses: 2/3 before the sowing, and 1/3 at the tillering phase or at the...
In the years 1999-2001, using two forecrops spring wheat and winter rape, crop yields of 6 wheat cultivars were compared in the conditions of the conventional (ploughed) tillage, simplified (ploughless) and direct seeding methods. On the basis of discriminant function analysis and analysis of concentration using the nearest neighbour method large variations in crop yields for the particular cultivars...
The pot experiment investigated an effect of varied phosphorus, potassium and magnesium fertilisation on the intensity of photosynthesis, transpiration, intercellular CO2 concentration and stomatal conductance as well as some plant biometrics obtained from Jaspis, a traditional home cultivar pea, and from homozygotic isoline, RRRbRb, and yellow lupin; Teo, a traditional cultivar, and Markiz,...
The paper discusses the relations between spring triticale grain yield and weather factors: mean air temperature, total precipitation and insolation in the north-west of Poland. Boundary values were determined for the weather factors such that caused the decrease in grain yield by at least 10% against the many-years yield average. On the basis of weather data from the years 1971-2000, climate indices...
The 1988-1998 study comprised analysis of statistical relation of degree of overwintering (in the 9-degree scale) and of winter damage (in percentages of sown area) of triticale, grown in field trials and in agricultural production to the air and soil thermic conditions and precipitation from December to March in the three distinguished overwintering zones. Also air minimum temperature at 5 cm above...
The paper suggests some indicators for the application of spatial methods in field experimentation. The indicators were based on the data from two field-breeding experiments with pea and field bean. Partially balanced square lattice designs were applied. The Smiths index of soil heterogeneity b, chemical properties of the soil e.g. pH, Mg, P and K contents as well as data obtained from check plots...
Two strict field two-factor experiments were carried out at the Mochełek Experiment Station of the Bydgoszcz University of Technology and Agriculture over 1999-2001 and included traditional narrow-leaf lupin Troll and white lupin Bardo cultivars. At the beginning of budding (once) and flowering (once) and twice on those stages the plants were sprayed with Topflor 015SL containing 15% of flurprimidol...
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